Decolourisation of palm oil mill biogas plant wastewater using Poly-Diallyldimethyl Ammonium Chloride (polyDADMAC) and other chemical coagulants

International Conference on Chemical and Bioprocess Engineering

地球科学;化学;生物科学

Zahrim, A.Y.^1,2,3,4 ; Dexter, Z.D.^1

Chemical Engineering Programme, Faculty of Engineering, Universiti Malaysia Sabah, Jalan, Kota Kinabalu, Sabah

88400, Malaysia^1

Water Research Unit, Universiti Malaysia Sabah, Jalan, Kota Kinabalu, Sabah

88400, Malaysia^2

Sustainable Palm Oil Research Unit, Universiti Malaysia Sabah, Jalan, Sabah, Kota Kinabalu

88400, Malaysia^3

Energy Research Unit, Universiti Malaysia Sabah, Jalan, Kota Kinabalu, Sabah

88400, Malaysia^4

关键词: Bridging mechanism;    Charge neutralization;    Chemical coagulants;    Coagulation process;    Magnesium hydroxide;    Palm oil mill effluents;    Treated wastewater;    Zeta potential analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/36/1/012025/pdf
DOI  :  10.1088/1755-1315/36/1/012025

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Palm oil mill effluent was expected as a future source of renewable biogas. Nevertheless,colours in palm oil mill biogas plant wastewater (POMBPW) causes negative perception among the public and the wastewater is difficult to be treated biologically. In this study, the performance of various chemical coagulants i.e., calcium lactate, magnesium hydroxide, ferric chloride, aluminium chlorohydrate i.e. CK-800, CK-1000, and polyDADMAC, forPOMBPW colour removal were investigated. PolyDADMAC (1,000 mg/L) shows best colour removal (∼48%). The main coagulation process with polyDADMACcould be due to charge neutralization-bridging mechanism. The zeta potential analysis supports the finding where the value became positive as the dosage increases. The addition of polyDADMAC has increased the conductivity of the treated wastewater up to 9.22%; however, the final pH is maintained (8.0-8.3). It can be deduced that polyDADMAC has potential to treat POMBPW at low dosage.