Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production
This study focused on the optimization of hydrothermal conditioning conditions for Napier PakChong1 grass to produce press fluid for biogas production. The integrated generation of solid fuel and biogas from biomass (IFBB) process was adopted to separate press fluid from the biomass. Napier PakChong...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universiti Putra Malaysia Press
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/69697/ http://psasir.upm.edu.my/id/eprint/69697/1/09%20JST-S0505-2019.pdf |
| _version_ | 1848856481238089728 |
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| author | Suaisom, Pitchaya Pholchan, Patiroop Che Man, Hasfalina Aggarangsi, Pruk |
| author_facet | Suaisom, Pitchaya Pholchan, Patiroop Che Man, Hasfalina Aggarangsi, Pruk |
| author_sort | Suaisom, Pitchaya |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study focused on the optimization of hydrothermal conditioning conditions for Napier PakChong1 grass to produce press fluid for biogas production. The integrated generation of solid fuel and biogas from biomass (IFBB) process was adopted to separate press fluid from the biomass. Napier PakChong1 grass was hydrothermally pretreated and then mechanically pressed. The press fluid was used for biochemical methane potential (BMP) test while the press cake could be utilized as the solid fuel. The full factorial design of experiment with center points and the Central Composite Design (CCD) were developed to obtain the best possible combination of harvesting time, grass to water ratio, temperature and soaking time for the maximum organic substance (as COD) in press fluid. It was found that the obtained model could satisfactorily predict the mass of COD in press fluid used as the model response. The optimum hydrothermal conditioning conditions were as follows; harvesting time 75 d, ratio of grass to water of 1:6 (by weight), ambient temperature (about 25°C) of the water and the soaking time of 355 min. The mass of COD obtained in these conditions was 226.42 g equating to 71.5% of the value predicted by the model (316.68 g). The microbial kinetic coefficients and biogas yield potential of press fluid at these optimum conditions were properly fitted with the modified Gompertz equation (adjusted R2= 0.995). The methane yield potential (P), the maximum methane production rate (Rm) and lag phase time (λ) were 412.18 mlCH4/gVSadded, 51.47 mlCH4/gVSadded/d and 4.36 days, respectively. |
| first_indexed | 2025-11-15T11:42:20Z |
| format | Article |
| id | upm-69697 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:42:20Z |
| publishDate | 2019 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-696972019-07-08T03:58:43Z http://psasir.upm.edu.my/id/eprint/69697/ Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production Suaisom, Pitchaya Pholchan, Patiroop Che Man, Hasfalina Aggarangsi, Pruk This study focused on the optimization of hydrothermal conditioning conditions for Napier PakChong1 grass to produce press fluid for biogas production. The integrated generation of solid fuel and biogas from biomass (IFBB) process was adopted to separate press fluid from the biomass. Napier PakChong1 grass was hydrothermally pretreated and then mechanically pressed. The press fluid was used for biochemical methane potential (BMP) test while the press cake could be utilized as the solid fuel. The full factorial design of experiment with center points and the Central Composite Design (CCD) were developed to obtain the best possible combination of harvesting time, grass to water ratio, temperature and soaking time for the maximum organic substance (as COD) in press fluid. It was found that the obtained model could satisfactorily predict the mass of COD in press fluid used as the model response. The optimum hydrothermal conditioning conditions were as follows; harvesting time 75 d, ratio of grass to water of 1:6 (by weight), ambient temperature (about 25°C) of the water and the soaking time of 355 min. The mass of COD obtained in these conditions was 226.42 g equating to 71.5% of the value predicted by the model (316.68 g). The microbial kinetic coefficients and biogas yield potential of press fluid at these optimum conditions were properly fitted with the modified Gompertz equation (adjusted R2= 0.995). The methane yield potential (P), the maximum methane production rate (Rm) and lag phase time (λ) were 412.18 mlCH4/gVSadded, 51.47 mlCH4/gVSadded/d and 4.36 days, respectively. Universiti Putra Malaysia Press 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/69697/1/09%20JST-S0505-2019.pdf Suaisom, Pitchaya and Pholchan, Patiroop and Che Man, Hasfalina and Aggarangsi, Pruk (2019) Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production. Pertanika Journal of Science & Technology, 27 (S1). pp. 109-122. ISSN 0128-7680; ESSN: 2231-8526 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2027%20(S1).%202019/09%20JST-S0505-2019.pdf |
| spellingShingle | Suaisom, Pitchaya Pholchan, Patiroop Che Man, Hasfalina Aggarangsi, Pruk Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production |
| title | Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production |
| title_full | Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production |
| title_fullStr | Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production |
| title_full_unstemmed | Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production |
| title_short | Optimization of hydrothermal conditioning conditions for Pennisetum purpureum x Pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production |
| title_sort | optimization of hydrothermal conditioning conditions for pennisetum purpureum x pennisetum americanum (napier pakchong1 grass) to produce the press fluid for biogas production |
| url | http://psasir.upm.edu.my/id/eprint/69697/ http://psasir.upm.edu.my/id/eprint/69697/ http://psasir.upm.edu.my/id/eprint/69697/1/09%20JST-S0505-2019.pdf |