Biogas Production from Citrus Waste by Membrane Bioreactor
Rapid acidification and inhibition by d-limonene are major challenges of biogas production from citrus waste. As limonene is a hydrophobic chemical, this challenge was encountered using hydrophilic polyvinylidine difluoride (PVDF) membranes in a biogas reactor. The more sensitive methane-producing a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-08-01
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| Series: | Membranes |
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| Online Access: | http://www.mdpi.com/2077-0375/4/3/596 |
| _version_ | 1797757566878482432 |
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| author | Rachma Wikandari Ria Millati Muhammad Nur Cahyanto Mohammad J. Taherzadeh |
| author_facet | Rachma Wikandari Ria Millati Muhammad Nur Cahyanto Mohammad J. Taherzadeh |
| author_sort | Rachma Wikandari |
| collection | DOAJ |
| description | Rapid acidification and inhibition by d-limonene are major challenges of biogas production from citrus waste. As limonene is a hydrophobic chemical, this challenge was encountered using hydrophilic polyvinylidine difluoride (PVDF) membranes in a biogas reactor. The more sensitive methane-producing archaea were encapsulated in the membranes, while freely suspended digesting bacteria were present in the culture as well. In this membrane bioreactor (MBR), the free digesting bacteria digested the citrus wastes and produced soluble compounds, which could pass through the membrane and converted to biogas by the encapsulated cell. As a control experiment, similar digestions were carried out in bioreactors containing the identical amount of just free cells. The experiments were carried out in thermophilic conditions at 55 °C, and hydraulic retention time of 30 days. The organic loading rate (OLR) was started with 0.3 kg VS/m3/day and gradually increased to 3 kg VS/m3/day. The results show that at the highest OLR, MBR was successful to produce methane at 0.33 Nm3/kg VS, while the traditional free cell reactor reduced its methane production to 0.05 Nm3/kg VS. Approximately 73% of the theoretical methane yield was achieved using the membrane bioreactor. |
| first_indexed | 2024-03-12T18:17:37Z |
| format | Article |
| id | doaj.art-db52dc9ac024491b9818226feab0cbf2 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-12T18:17:37Z |
| publishDate | 2014-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-db52dc9ac024491b9818226feab0cbf22023-08-02T09:04:35ZengMDPI AGMembranes2077-03752014-08-014359660710.3390/membranes4030596membranes4030596Biogas Production from Citrus Waste by Membrane BioreactorRachma Wikandari0Ria Millati1Muhammad Nur Cahyanto2Mohammad J. Taherzadeh3Swedish Centre for Resource Recovery, University of Borås, Allégatan 1, Borås 50190, SwedenDepartment of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Bulaksumur, Yogyakarta 55281, IndonesiaDepartment of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Bulaksumur, Yogyakarta 55281, IndonesiaSwedish Centre for Resource Recovery, University of Borås, Allégatan 1, Borås 50190, SwedenRapid acidification and inhibition by d-limonene are major challenges of biogas production from citrus waste. As limonene is a hydrophobic chemical, this challenge was encountered using hydrophilic polyvinylidine difluoride (PVDF) membranes in a biogas reactor. The more sensitive methane-producing archaea were encapsulated in the membranes, while freely suspended digesting bacteria were present in the culture as well. In this membrane bioreactor (MBR), the free digesting bacteria digested the citrus wastes and produced soluble compounds, which could pass through the membrane and converted to biogas by the encapsulated cell. As a control experiment, similar digestions were carried out in bioreactors containing the identical amount of just free cells. The experiments were carried out in thermophilic conditions at 55 °C, and hydraulic retention time of 30 days. The organic loading rate (OLR) was started with 0.3 kg VS/m3/day and gradually increased to 3 kg VS/m3/day. The results show that at the highest OLR, MBR was successful to produce methane at 0.33 Nm3/kg VS, while the traditional free cell reactor reduced its methane production to 0.05 Nm3/kg VS. Approximately 73% of the theoretical methane yield was achieved using the membrane bioreactor.http://www.mdpi.com/2077-0375/4/3/596MBRencapsulationanaerobic digestiond-limonenecitrus waste |
| spellingShingle | Rachma Wikandari Ria Millati Muhammad Nur Cahyanto Mohammad J. Taherzadeh Biogas Production from Citrus Waste by Membrane Bioreactor Membranes MBR encapsulation anaerobic digestion d-limonene citrus waste |
| title | Biogas Production from Citrus Waste by Membrane Bioreactor |
| title_full | Biogas Production from Citrus Waste by Membrane Bioreactor |
| title_fullStr | Biogas Production from Citrus Waste by Membrane Bioreactor |
| title_full_unstemmed | Biogas Production from Citrus Waste by Membrane Bioreactor |
| title_short | Biogas Production from Citrus Waste by Membrane Bioreactor |
| title_sort | biogas production from citrus waste by membrane bioreactor |
| topic | MBR encapsulation anaerobic digestion d-limonene citrus waste |
| url | http://www.mdpi.com/2077-0375/4/3/596 |
| work_keys_str_mv | AT rachmawikandari biogasproductionfromcitruswastebymembranebioreactor AT riamillati biogasproductionfromcitruswastebymembranebioreactor AT muhammadnurcahyanto biogasproductionfromcitruswastebymembranebioreactor AT mohammadjtaherzadeh biogasproductionfromcitruswastebymembranebioreactor |