Aerobic and anaerobic co-cultivation of Nannochloropsis oculata with oil palm empty fruit bunch for enhanced biomethane production and palm oil mill effluent treatment

This study explored co-cultivation of Nannochloropsis oculata microalgae with oil palm empty fruit bunch (OPEFB) for anaerobic biomethane production and palm oil mill effluent (POME) treatment. The highest specific biogas production rate (1.13â��1.14 m3 kgâ��1 COD dâ��1) and methane yield (4606â�...

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Main Authors: Ahmad, A., Shah, S.M.U., Othman, M.F., Abdullah, M.A.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.26069 /
Published: Taylor and Francis Inc. 2015
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945488719&doi=10.1080%2f19443994.2014.960458&partnerID=40&md5=f5842f8c7c5e88ed4b7f73c1cf7bae96
http://eprints.utp.edu.my/26069/
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Summary: This study explored co-cultivation of Nannochloropsis oculata microalgae with oil palm empty fruit bunch (OPEFB) for anaerobic biomethane production and palm oil mill effluent (POME) treatment. The highest specific biogas production rate (1.13�1.14 m3 kg�1 COD d�1) and methane yield (4606�5018 mL CH4 L�1 POME d�1) were achieved with co-cultivation of N. oculata (2 mL/mL POME) and OPEFB (0.12 g/mL POME), as similarly predicted by response surface methodology for optimum conditions. Without microalgae and OPEFB co-cultivation, the biomethane yield was 1.3-fold lower, although the specific biogas production rate remained constant at 1.13�1.16 m3 kg�1 COD d�1. Aerobic and anaerobic treatment of POME after 7 d with microalgae achieved higher removal efficiency of COD (90�97), BOD (84�98) and TOC (65�80) as compared to without microalgae with COD (58�68), BOD (77�86) and TOC (58�68). © 2014 Balaban Desalination Publications. All rights reserved.