Optimization of hydrothermal conditioning conditions for pennisetum purpureum x pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production

© Universiti Putra Malaysia Press. 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 flui...

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Main Authors: Pitchaya Suaisom, Patiroop Pholchan, Hasfalina Che Man, Pruk Aggarangsi
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/67562
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-675622020-04-02T15:07:44Z Optimization of hydrothermal conditioning conditions for pennisetum purpureum x pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production Pitchaya Suaisom Patiroop Pholchan Hasfalina Che Man Pruk Aggarangsi Agricultural and Biological Sciences Chemical Engineering Computer Science Environmental Science © Universiti Putra Malaysia Press. 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. 2020-04-02T14:55:42Z 2020-04-02T14:55:42Z 2019-01-01 Journal 22318526 01287680 2-s2.0-85068416820 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85068416820&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/67562
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Agricultural and Biological Sciences
Chemical Engineering
Computer Science
Environmental Science
spellingShingle Agricultural and Biological Sciences
Chemical Engineering
Computer Science
Environmental Science
Pitchaya Suaisom
Patiroop Pholchan
Hasfalina Che Man
Pruk Aggarangsi
Optimization of hydrothermal conditioning conditions for pennisetum purpureum x pennisetum americanum (Napier PakChong1 grass) to produce the press fluid for biogas production
description © Universiti Putra Malaysia Press. 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.
format Journal
author Pitchaya Suaisom
Patiroop Pholchan
Hasfalina Che Man
Pruk Aggarangsi
author_facet Pitchaya Suaisom
Patiroop Pholchan
Hasfalina Che Man
Pruk Aggarangsi
author_sort Pitchaya Suaisom
title 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_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_sort optimization of hydrothermal conditioning conditions for pennisetum purpureum x pennisetum americanum (napier pakchong1 grass) to produce the press fluid for biogas production
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85068416820&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/67562
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