<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0872-1904</journal-id>
<journal-title><![CDATA[Portugaliae Electrochimica Acta]]></journal-title>
<abbrev-journal-title><![CDATA[Port. Electrochim. Acta]]></abbrev-journal-title>
<issn>0872-1904</issn>
<publisher>
<publisher-name><![CDATA[Sociedade Portuguesa de Electroquímica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0872-19042024000300205</article-id>
<article-id pub-id-type="doi">10.4152/pea.2023420304</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Response Surface Methodology Application for the Optimization of Biogas Yield from an Anaerobic Co-Digestion Process]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Efetobor]]></surname>
<given-names><![CDATA[U. J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[A. O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Onokpite]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Okonkwo]]></surname>
<given-names><![CDATA[U. C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Delta State Polytechnic Department of Mechanical Engineering ]]></institution>
<addr-line><![CDATA[Otefe-Oghara Delta State]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Bells University of Technology Department of Mechanical Engineering ]]></institution>
<addr-line><![CDATA[Ota Ogun State]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Nnamdi Azikiwe University Department of Mechanical Engineering ]]></institution>
<addr-line><![CDATA[Awka Anambra State]]></addr-line>
<country>Nigeria</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>42</volume>
<numero>3</numero>
<fpage>205</fpage>
<lpage>221</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0872-19042024000300205&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0872-19042024000300205&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0872-19042024000300205&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This study carried out Bg anaerobic Cd. RSM was employed to investigate the optimum experimental conditions for Bg yield. The input parameters were PD substrates combination, either with WH or GS. Using six different identical 25 L cylindrical digesters, 6 experimental setups of the substrate combinations were carried out, for an incubation time of 22 days, under ambient T of 33 °C, and pH of 6.7. The setups digesters were: 25% PD:75% WH (1); 50% PD:50% WH (2); 75% PD:25% WH (3); 25% PD:75% GS (4); 50% PD:50% GS (5); and 75% PD:25% GS (6). From experimental observations, Bg yield started on day 5, for setups 1, 2, 4 and 5, followed by setup 3 on day 6. Setup 6 was the last digester to produce Bg, on day 7. Setup 2 recorded the highest Bg yield (75 cm3/day), while setup 6 had the lowest value yield (48 cm3/day). Furthermore, additional setups (7 and 8) were carried out for determining Bg characteristics and evaluating the effect of a pre-activated active slurry in its yields. Optimum Bg yield (75 cm3/day) was attained by 50% PD:50% WH. This result validates Bg production through substrates Cd, and the employment of optimization tools, in order to obtain ideal process parameters. Furthermore, quadratic model developed by RSM was highly reliable and reproducible, while the predicted values were close to the experimental ones.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[AD]]></kwd>
<kwd lng="en"><![CDATA[additives]]></kwd>
<kwd lng="en"><![CDATA[Bg]]></kwd>
<kwd lng="en"><![CDATA[Cd]]></kwd>
<kwd lng="en"><![CDATA[optimization]]></kwd>
<kwd lng="en"><![CDATA[RSM]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Owamah]]></surname>
<given-names><![CDATA[HI]]></given-names>
</name>
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Alfa]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Preliminary evaluation of the effect of a chicken feather with no major pre-treatment on biogas production from horse dung]]></article-title>
<source><![CDATA[Environ Nanotechnol Monit Manag]]></source>
<year>2020</year>
<volume>14</volume>
<page-range>100347</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Khayum]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Anbarasu]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Murugan]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biogas potential from spent tea waste a laboratory scale investigation of co-digestion with cow manure]]></article-title>
<source><![CDATA[Energy]]></source>
<year>2018</year>
<volume>165</volume>
<page-range>760-8</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Okokpujie]]></surname>
<given-names><![CDATA[IP]]></given-names>
</name>
<name>
<surname><![CDATA[Ibiwoye]]></surname>
<given-names><![CDATA[MO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of thermal and flow properties on the performance of Jebba Hydro-Power Plant, Jebba, Nigeria]]></article-title>
<source><![CDATA[Mater Today Proc]]></source>
<year>2022</year>
<volume>65</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>2245-53</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Ajisegiri]]></surname>
<given-names><![CDATA[ES]]></given-names>
</name>
<name>
<surname><![CDATA[Okokpujie]]></surname>
<given-names><![CDATA[IP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization of lignocellulose biomass based on proximate, ultimate, structural composition, and thermal analysis]]></article-title>
<source><![CDATA[Mater Today Proc]]></source>
<year>2022</year>
<volume>3</volume>
<numero>65</numero>
<issue>65</issue>
<page-range>2156-62</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Okokpujie]]></surname>
<given-names><![CDATA[IP]]></given-names>
</name>
<name>
<surname><![CDATA[Ajisegiri]]></surname>
<given-names><![CDATA[ES]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization of Lignocellulosic Biomass Samples in Omu-Aran Metropolis, Kwara State, Nigeria, as Potential Fuel for Pyrolysis Yields]]></article-title>
<source><![CDATA[Int J Renew Ener Dev]]></source>
<year>2022</year>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Siddique]]></surname>
<given-names><![CDATA[MNI]]></given-names>
</name>
<name>
<surname><![CDATA[Wahid]]></surname>
<given-names><![CDATA[ZA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Achievements and perspectives of anaerobic co-digestion a review]]></article-title>
<source><![CDATA[J Clean Prod]]></source>
<year>2018</year>
<volume>194</volume>
<page-range>359-71</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nnodim]]></surname>
<given-names><![CDATA[CT]]></given-names>
</name>
<name>
<surname><![CDATA[Kpu]]></surname>
<given-names><![CDATA[GC]]></given-names>
</name>
<name>
<surname><![CDATA[Okhuegbe]]></surname>
<given-names><![CDATA[SN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Figures of Merit for Wind and Solar PV Integration in Electricity Grids]]></article-title>
<source><![CDATA[J Sci Indust Res]]></source>
<year>2022</year>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Okonkwo]]></surname>
<given-names><![CDATA[UC]]></given-names>
</name>
<name>
<surname><![CDATA[Osueke]]></surname>
<given-names><![CDATA[CO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Quantifying Cassava Waste Generation and Biogas Production in Eha-Alumona Grinding Mills]]></article-title>
<source><![CDATA[Int J Civ Eng]]></source>
<year>2019</year>
<volume>10</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>2032-43</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oyebanji]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Okokpujie]]></surname>
<given-names><![CDATA[IP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization of Adansonia Digitat (Baobab Wood) Bio-oil and Biochar Produced using a Fixed-Bed Tubular Reactor]]></article-title>
<source><![CDATA[Rev Compos Mater Adv]]></source>
<year>2023</year>
<volume>33</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>39-46</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Okonkwo]]></surname>
<given-names><![CDATA[UC]]></given-names>
</name>
<name>
<surname><![CDATA[Onokpite]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative study of the optimal ratio of biogas production from various organic wastes and weeds for digester/restarted digester]]></article-title>
<source><![CDATA[J King Saud Univ Eng]]></source>
<year>2018</year>
<volume>30</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>123-9</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schimpf]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Schrader]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hubner]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utilization of solid digestate from acidification reactors of continues two-stage anaerobic digestion processes in Lentinula edodes cultivation]]></article-title>
<source><![CDATA[Biores Technol Rep]]></source>
<year>2019</year>
<volume>8</volume>
<page-range>100322</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ibrahim]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
<name>
<surname><![CDATA[Imrana]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biogas Production from Lignocellulosic Materials Co-Digestion of Corn Cobs, Groundnut Shell and Sheep Dung]]></article-title>
<source><![CDATA[Imper J Interdiscip Res]]></source>
<year>2016</year>
<volume>2</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1261-8</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Elijah]]></surname>
<given-names><![CDATA[TI]]></given-names>
</name>
<name>
<surname><![CDATA[Mangibo]]></surname>
<given-names><![CDATA[IA]]></given-names>
</name>
<name>
<surname><![CDATA[Mohammad]]></surname>
<given-names><![CDATA[YS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The study of cow dung as co-substrate with rice husk in biogas production]]></article-title>
<source><![CDATA[J Sci Res Essay]]></source>
<year>2009</year>
<volume>4</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>861-6</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[El-Mashad]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Zeeman]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Loon]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of Temperature Fluctuation on Thermophilic Anaerobic Digestion of Cattle Manure]]></article-title>
<source><![CDATA[Biores Technol]]></source>
<year>2003</year>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dahunsi]]></surname>
<given-names><![CDATA[SO]]></given-names>
</name>
<name>
<surname><![CDATA[Osueke]]></surname>
<given-names><![CDATA[CO]]></given-names>
</name>
<name>
<surname><![CDATA[Olayanju]]></surname>
<given-names><![CDATA[TMA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Co-digestion of Theobroma cacao (Cocoa) pod husk and poultry manure for energy generation Effects of pretreatment methods]]></article-title>
<source><![CDATA[Biores Technol]]></source>
<year>2019</year>
<volume>283</volume>
<page-range>229-41</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Riggio]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Comino]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Rosso]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Energy production from anaerobic co-digestion processing of cow slurry, olive pomace and apple pulp]]></article-title>
<source><![CDATA[Renew Energy]]></source>
<year>2015</year>
<volume>83</volume>
<page-range>1043-9</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<collab>H.Duan N.Lin C</collab>
<article-title xml:lang=""><![CDATA[Anaerobic co-digestion of kitchen waste and pig manure with different mixing ratios]]></article-title>
<source><![CDATA[J Biosci Bioeng]]></source>
<year>2015</year>
<volume>120</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>51-7</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Adepoju]]></surname>
<given-names><![CDATA[TF]]></given-names>
</name>
<name>
<surname><![CDATA[Eyibio]]></surname>
<given-names><![CDATA[UP]]></given-names>
</name>
<name>
<surname><![CDATA[Olatunbosun]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimization investigation of biogas potential of Tithonia diversifolia as an alternative energy source]]></article-title>
<source><![CDATA[Int J Chem Eng Res]]></source>
<year>2016</year>
<volume>3</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>46-55</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dalkilic]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Ugurlu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biogas production from chicken manure at different organic loading rates in a mesophilic-thermopilic two stage anaerobic system]]></article-title>
<source><![CDATA[J Biosci Bioeng]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hagos]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Zong]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaerobic co-digestion process for biogas production Progress, challenges and perspectives]]></article-title>
<source><![CDATA[Ren Sust Ener Rev]]></source>
<year>2017</year>
<volume>76</volume>
<page-range>1485-96</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hakimi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Shamsudin]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
<name>
<surname><![CDATA[Pendyala]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Co-anaerobic Digestion of Chicken Manure and Selected Additives for Biogas Production]]></article-title>
<source><![CDATA[IOP Conf Ser: Earth Environ Sci]]></source>
<year>2021</year>
<volume>765</volume>
<page-range>012055</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Venkateshkumar]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Shanmugam]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Veerappan]]></surname>
<given-names><![CDATA[AR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Experimental investigation on the effect of anaerobic co-digestion of cotton seed hull with cow dung]]></article-title>
<source><![CDATA[Biomass Convers Bioref]]></source>
<year>2019</year>
<volume>11</volume>
<page-range>1255-62</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Achebe]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
<name>
<surname><![CDATA[Onokpite]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaerobic Digestion and Co-digestion of Poultry Droppings (P) and Cassava Peels (CP) Comparative Study of Optimal Biogas Production]]></article-title>
<source><![CDATA[J Eng Appl Sci]]></source>
<year>2018</year>
<volume>12</volume>
<page-range>87-93</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alagoz]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Yenigun]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Erdincler]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ultrasound assisted biogas production from co-digestion of wastewater sludges and agricultural wastes: Comparison with microwave pre-treatment]]></article-title>
<source><![CDATA[Ultrason Sonochem]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cardona]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Levrard]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Guenne]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Co-digestion of wastewater sludge Choosing the optimal blend]]></article-title>
<source><![CDATA[Waste Manag]]></source>
<year>2019</year>
<volume>87</volume>
<page-range>772-81</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rupf]]></surname>
<given-names><![CDATA[GV]]></given-names>
</name>
<name>
<surname><![CDATA[Bahri]]></surname>
<given-names><![CDATA[PA]]></given-names>
</name>
<name>
<surname><![CDATA[de Boer]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[McHenry]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development of an optimal biogas system design model for Sub-Saharan Africa with case studies from Kenya and Cameroon]]></article-title>
<source><![CDATA[Ren Ener]]></source>
<year>2017</year>
<volume>09</volume>
<page-range>586-601</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dahunsi]]></surname>
<given-names><![CDATA[SO]]></given-names>
</name>
<name>
<surname><![CDATA[Oranusi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Owolabi]]></surname>
<given-names><![CDATA[JB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Synergy of Siam weed (Chromolaena odorata) and poultry manure for energy generation Effects of pretreatment methods, modeling and process optimization]]></article-title>
<source><![CDATA[Biores Technol]]></source>
<year>2017</year>
<volume>225</volume>
<page-range>409-17</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Betiku]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Okunsolawo]]></surname>
<given-names><![CDATA[SS]]></given-names>
</name>
<name>
<surname><![CDATA[Ajala]]></surname>
<given-names><![CDATA[SO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Performance evaluation of artificial neural network coupled with generic algorithm and response surface methodology in modeling and optimization of biodiesel production process parameters from shea tree (Vitellaria paradoxa) nut butter]]></article-title>
<source><![CDATA[Ren Ener]]></source>
<year>2015</year>
<volume>76</volume>
<page-range>408-17</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kana]]></surname>
<given-names><![CDATA[EBG]]></given-names>
</name>
<name>
<surname><![CDATA[Oloke]]></surname>
<given-names><![CDATA[JK]]></given-names>
</name>
<name>
<surname><![CDATA[Lateef]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modelling and optimization of biogas production on sawdust and other co-substrates using Artificial Neural network and Genetic Algorithm]]></article-title>
<source><![CDATA[Ren Ener]]></source>
<year>2012</year>
<volume>46</volume>
<page-range>276-81</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Ibikunle]]></surname>
<given-names><![CDATA[AR]]></given-names>
</name>
<name>
<surname><![CDATA[Ajisegiri]]></surname>
<given-names><![CDATA[ESA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimization of process parameters for intermediate pyrolysis of sugarcane bagasse for biochar production using response surface methodology Int. Conf. on Sci. Eng. Bus]]></article-title>
<source><![CDATA[Sustain Dev Goals]]></source>
<year>2023</year>
<volume>1</volume>
<page-range>1-9</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dahunsi]]></surname>
<given-names><![CDATA[SO]]></given-names>
</name>
<name>
<surname><![CDATA[Oranusi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Owolabi]]></surname>
<given-names><![CDATA[JB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mesophilic anaerobic co-digestion of poultry dropping and Carica papaya peels Modelling and process parameter optimization study]]></article-title>
<source><![CDATA[Biores Technol]]></source>
<year>2016</year>
<volume>214</volume>
<page-range>587-600</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wadjeam]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Reungsang]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Imai]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Co-digestion of cassava starch wastewater with buffalo dung for bio-hydrogen production]]></article-title>
<source><![CDATA[Int J Hydrog Ener]]></source>
<year>2019</year>
<volume>44</volume>
<numero>29</numero>
<issue>29</issue>
<page-range>14694-706</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
<name>
<surname><![CDATA[Okokpujie]]></surname>
<given-names><![CDATA[IP]]></given-names>
</name>
<name>
<surname><![CDATA[Ajisegiri]]></surname>
<given-names><![CDATA[ESA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application of Response Surface Methodology for the Modelling and Optimization of Bio-Oil Yield via Intermediate Pyrolysis Process of Sugarcane bagasse]]></article-title>
<source><![CDATA[Adv Mater Proc Technol]]></source>
<year>2023</year>
</nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Montgomery]]></surname>
<given-names><![CDATA[DC]]></given-names>
</name>
<name>
<surname><![CDATA[Peck]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
<name>
<surname><![CDATA[Vining]]></surname>
<given-names><![CDATA[GG]]></given-names>
</name>
</person-group>
<source><![CDATA[Introduction to linear regression analysis,]]></source>
<year>2001</year>
<edition>3</edition>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[John Willey &amp; Sons]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B35">
<label>35</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mirmohamadsadeghi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Karimi]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Azarbaijani]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pretreatment of lignocelluloses for enhanced biogas production A review on influencing mechanisms and the importance of microbial diversity]]></article-title>
<source><![CDATA[Renew Sust Energ Rev]]></source>
<year>2021</year>
<volume>135</volume>
<page-range>110173</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>36</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alfa]]></surname>
<given-names><![CDATA[IM]]></given-names>
</name>
<name>
<surname><![CDATA[Dahunsi]]></surname>
<given-names><![CDATA[SO]]></given-names>
</name>
<name>
<surname><![CDATA[Iorhemen]]></surname>
<given-names><![CDATA[OT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative Evaluation of Biogas Production from Poultry Droppings, Cow Dung and Lemon Grass]]></article-title>
<source><![CDATA[Biores Technol]]></source>
<year>2014</year>
<volume>157</volume>
<page-range>270-7</page-range></nlm-citation>
</ref>
<ref id="B37">
<label>37</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Khayum]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Anbarasu]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Murugan]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biogas potential from spent tea waste a laboratory scale investigation of co-digestion with cow manure]]></article-title>
<source><![CDATA[Energy]]></source>
<year>2018</year>
<volume>165</volume>
<page-range>760-8</page-range></nlm-citation>
</ref>
<ref id="B38">
<label>38</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Banks]]></surname>
<given-names><![CDATA[CJ]]></given-names>
</name>
<name>
<surname><![CDATA[Heaven]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimisation of biogas yields from anaerobic digestion by feedstock type The biogas Handbook. Science, Production and Applications]]></article-title>
<source><![CDATA[Woodhead Publ Ser Energ]]></source>
<year>2013</year>
<page-range>131-65</page-range></nlm-citation>
</ref>
<ref id="B39">
<label>39</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wadjeam]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Reungsang]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Imai]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Co-digestion of cassava starch wastewater with buffalo dung for bio-hydrogen production]]></article-title>
<source><![CDATA[Int J Hydrogen Energ]]></source>
<year>2019</year>
<volume>44</volume>
<numero>29</numero>
<issue>29</issue>
<page-range>14694-706</page-range></nlm-citation>
</ref>
<ref id="B40">
<label>40</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alfa]]></surname>
</name>
<name>
<surname><![CDATA[MI]]></surname>
</name>
<name>
<surname><![CDATA[Owamah]]></surname>
<given-names><![CDATA[HI]]></given-names>
</name>
<name>
<surname><![CDATA[Onokwai]]></surname>
<given-names><![CDATA[AO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of biogas yield and kinetics from the anaerobic co-digestion of cow dung and horse dung a strategy for sustainable management of livestock manure]]></article-title>
<source><![CDATA[Ener Ecol Environ]]></source>
<year>2021</year>
<volume>6</volume>
<page-range>425-34</page-range></nlm-citation>
</ref>
<ref id="B41">
<label>41</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Paranhos]]></surname>
<given-names><![CDATA[AGD]]></given-names>
</name>
<name>
<surname><![CDATA[Adarme]]></surname>
<given-names><![CDATA[OFH]]></given-names>
</name>
<name>
<surname><![CDATA[Barreto]]></surname>
<given-names><![CDATA[GF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Methane production by co-digestion of poultry manure and lignocellulosic biomass Kinetic and energy assessment]]></article-title>
<source><![CDATA[Biores Technol]]></source>
<year>2020</year>
<volume>300</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>122588</page-range></nlm-citation>
</ref>
<ref id="B42">
<label>42</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dima]]></surname>
<given-names><![CDATA[AD]]></given-names>
</name>
<name>
<surname><![CDATA[Parvulescu]]></surname>
<given-names><![CDATA[OC]]></given-names>
</name>
<name>
<surname><![CDATA[Mateescu]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimization of substrate composition in anaerobic co-digestion of agricultural waste using central composite design]]></article-title>
<source><![CDATA[Biomass Bioenerg]]></source>
<year>2020</year>
<volume>138</volume>
<page-range>105602</page-range></nlm-citation>
</ref>
<ref id="B43">
<label>43</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rahman]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Moller]]></surname>
<given-names><![CDATA[HB]]></given-names>
</name>
<name>
<surname><![CDATA[Saha]]></surname>
<given-names><![CDATA[CK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimal ratio for anaerobic co-digestion of poultry droppings and lignocellulosic-rich substrates for enhanced biogas production]]></article-title>
<source><![CDATA[Ener Sustain Dev]]></source>
<year>2017</year>
<volume>39</volume>
<page-range>59-66</page-range></nlm-citation>
</ref>
<ref id="B44">
<label>44</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[XJ]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[GH]]></given-names>
</name>
<name>
<surname><![CDATA[Feng]]></surname>
<given-names><![CDATA[YZ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimizing feeding composition and carbon-nitrogen ratios for improved methane yield during anaerobic co-digestion of dairy chicken manure and wheat straw]]></article-title>
<source><![CDATA[Biores Technol]]></source>
<year>2012</year>
<volume>120</volume>
<page-range>78-83</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
