Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula Cultures
Biogas from the fast growing crop, <i>Pennisetum purpureum</i>, has received considerable attention in Southeast Asia since wastewater and bio-waste materials are almost completely utilized. To overcome slow hydrolysis, a rate-limiting step in anaerobic digestion of lignocellulosic bioma...
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MDPI AG
2019-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/22/4226 |
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| author | Chettaphong Phuttaro Alissara Reungsang Piyarat Boonsawang Sumate Chaiprapat |
| author_facet | Chettaphong Phuttaro Alissara Reungsang Piyarat Boonsawang Sumate Chaiprapat |
| author_sort | Chettaphong Phuttaro |
| collection | DOAJ |
| description | Biogas from the fast growing crop, <i>Pennisetum purpureum</i>, has received considerable attention in Southeast Asia since wastewater and bio-waste materials are almost completely utilized. To overcome slow hydrolysis, a rate-limiting step in anaerobic digestion of lignocellulosic biomass, superior microorganism culture, size reduction, and sonication pretreatment were co-applied. In the first experiment, the selection of anaerobic microbial culture to be used in digestion, so-called inoculum, was carried out. Specific anaerobic activities for hydrolysis and methanogenesis of sludge from different sources, a slurry digester of cattle farm (CF) and a wastewater digester of rubber latex factory (RL) were assessed. Results revealed a remarkable synergistic capability in the combined sludge, adding 10% and 49% to the overall biomethanation efficiency over the individual CF and RL sludges. In the second part, interactive effects of size reduction and sonication intensity were studied. Biomethanation efficiency as methane yield increased by 62% by size and 115% by sonication variation, but when optimally combined an additional gain of 40% was recorded. The regression model generated could estimate the energy yield increase as a function of size and sonication intensity with a satisfactory statistical precision R<sup>2</sup> of 0.945. |
| first_indexed | 2024-04-11T20:54:54Z |
| format | Article |
| id | doaj.art-9a7d3acc941f4a3e8cfda28bf1640222 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T20:54:54Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-9a7d3acc941f4a3e8cfda28bf16402222022-12-22T04:03:43ZengMDPI AGEnergies1996-10732019-11-011222422610.3390/en12224226en12224226Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula CulturesChettaphong Phuttaro0Alissara Reungsang1Piyarat Boonsawang2Sumate Chaiprapat3Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90112, ThailandDepartment of Biotechnology, Faculty of Technology, Khon Kean University, Khon Kaen 40002, ThailandDepartment of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, ThailandDepartment of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90112, ThailandBiogas from the fast growing crop, <i>Pennisetum purpureum</i>, has received considerable attention in Southeast Asia since wastewater and bio-waste materials are almost completely utilized. To overcome slow hydrolysis, a rate-limiting step in anaerobic digestion of lignocellulosic biomass, superior microorganism culture, size reduction, and sonication pretreatment were co-applied. In the first experiment, the selection of anaerobic microbial culture to be used in digestion, so-called inoculum, was carried out. Specific anaerobic activities for hydrolysis and methanogenesis of sludge from different sources, a slurry digester of cattle farm (CF) and a wastewater digester of rubber latex factory (RL) were assessed. Results revealed a remarkable synergistic capability in the combined sludge, adding 10% and 49% to the overall biomethanation efficiency over the individual CF and RL sludges. In the second part, interactive effects of size reduction and sonication intensity were studied. Biomethanation efficiency as methane yield increased by 62% by size and 115% by sonication variation, but when optimally combined an additional gain of 40% was recorded. The regression model generated could estimate the energy yield increase as a function of size and sonication intensity with a satisfactory statistical precision R<sup>2</sup> of 0.945.https://www.mdpi.com/1996-1073/12/22/4226napier grassmethane yieldanaerobic activitymixed inoculumsonication pretreatmentsize reduction |
| spellingShingle | Chettaphong Phuttaro Alissara Reungsang Piyarat Boonsawang Sumate Chaiprapat Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula Cultures Energies napier grass methane yield anaerobic activity mixed inoculum sonication pretreatment size reduction |
| title | Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula Cultures |
| title_full | Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula Cultures |
| title_fullStr | Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula Cultures |
| title_full_unstemmed | Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula Cultures |
| title_short | Integrative Effects of Sonication and Particle Size on Biomethanation of Tropical Grass <i>Pennisetum purpureum</i> Using Superior Diverse Inocula Cultures |
| title_sort | integrative effects of sonication and particle size on biomethanation of tropical grass i pennisetum purpureum i using superior diverse inocula cultures |
| topic | napier grass methane yield anaerobic activity mixed inoculum sonication pretreatment size reduction |
| url | https://www.mdpi.com/1996-1073/12/22/4226 |
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