Effective treatment of palm oil mill effluent using FeSO4.7H2O waste from titanium oxide industry: Coagulation adsorption isotherm and kinetics studies
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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Elsevier
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/72727/ http://irep.iium.edu.my/72727/ http://irep.iium.edu.my/72727/ http://irep.iium.edu.my/72727/1/72727%20Effective%20treatment%20of%20palm%20oil%20mill%20effluent.pdf http://irep.iium.edu.my/72727/2/72727%20Effective%20treatment%20of%20palm%20oil%20mill%20effluent%20SCOPUS.pdf |
| Summary: | 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. |
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