Effective treatment of palm oil mill effluent using FeSO4.7H2O waste from titanium oxide industry: Coagulation adsorption isotherm and kinetics studies

Hossain, Md. Sohrab and Omar, Fatehah and Asis, Ahmad Jaril and Bachmann, Robert Thomas and Sarker, Md. Zaidul Islam and Ab Kadir, Mohd Omar (2019) Effective treatment of palm oil mill effluent using FeSO4.7H2O waste from titanium oxide industry: Coagulation adsorption isotherm and kinetics studies. Journal of Cleaner Production, 219. pp. 86-98. ISSN 0959-6526

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Abstract

Palm oil mill effluent (POME) is a highly polluted industrial wastewater that may cause detrimental environmental pollution if discharged directly due to its biochemical oxygen demand (BOD) and chemical oxygen demand (COD) concentrations. In the present study, the performance of FeSO4.7H2O waste from titanium oxide industry was investigated in removing BOD, COD, and total suspended solids (TSS) from POME. Jar tests were conducted with varying coagulant doses (1e5gL�1 ), pH (2e10), and temperature (40e80 C) as a function of treatment time ranging from 5 to 90 min. Results show that the FeSO4.7H2O waste can remove about 70% COD, over 80% BOD, and over 85% TSS in a single stage coagulation treatment. The coagulation adsorption mechanisms for the removal of COD, BOD, and TSS from POME were investigated based on BrunauereEmmetteTeller (BET), Freundlich, and Langmuir isotherm models. The removal of COD, BOD, and TSS from POME was best described by the Freundlich isotherm model, indicating that coagulation adsorption occurred in a multilayer formation with nonuniform distribution of adsorbed particles. The coagulation adsorption kinetics studies revealed that the removal of COD, BOD, and TSS from POME using FeSO4.7H2O waste followed the second-orderkinetics modeling. Our findings suggest that the FeSO4.7H2O waste has the potential to be utilized as a coagulant for treating POME in compliance with the standard discharge limits.

Item Type:	Article (Journal)
Additional Information:	6605/72727
Uncontrolled Keywords:	Agro-industrial wastewater, Isotherm model, Coagulation kinetics, Ferrous sulfate, POME, Wastewater treatment
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD169 Environmental protection
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Pharmacy
Depositing User:	Professor Md. Zaidul Islam Sarker
Date Deposited:	19 Jun 2019 15:15
Last Modified:	02 Apr 2020 18:24
URI:	http://irep.iium.edu.my/id/eprint/72727

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