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Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption

Palm oil production involves multi-stage processes which release large volume of palm oil mill effluent (POME). Due to its high polluting environmental impact, POME must be treated prior to discharge. Integrated electrocoagulation (EC)-adsorption (AD) process has shown great potential to remove vari...

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Main Author: Sia, Yong Yin
Format: Thesis
Language:English
Published: Universiti Malaysia Sarawak, (UNIMAS) 2020
Subjects:
TD Environmental technology. Sanitary engineering
Online Access:http://ir.unimas.my/id/eprint/29956/1/Sia.pdf
http://ir.unimas.my/id/eprint/29956/
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spelling my.unimas.ir.299562023-07-06T03:55:08Z http://ir.unimas.my/id/eprint/29956/ Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption Sia, Yong Yin TD Environmental technology. Sanitary engineering Palm oil production involves multi-stage processes which release large volume of palm oil mill effluent (POME). Due to its high polluting environmental impact, POME must be treated prior to discharge. Integrated electrocoagulation (EC)-adsorption (AD) process has shown great potential to remove various organic and inorganic pollutants from wastewater. Up to date, no study has been found yet on POME treatment using integrated EC-AD process. Therefore, this study aims to investigate the feasibility of integrated EC-AD process as an alternative treatment for POME. In this study, EC was run simultaneously with AD to treat POME. The integrated EC-AD process achieved the highest removal of total suspended solid (TSS), chemical oxygen demand (COD), colour and total organic carbon (TOC) as compared to EC and AD stand-alone processes. The integrated EC-AD process successfully reduced 74-98% of TSS, 33-93% of COD, 85-99% of colour and 82-100% of TOC from POME at various POME initial concentrations ranging from 20% to 100%. The adsorption equilibrium of TSS was best fitted by the Langmuir isotherm whereas the adsorption of COD, colour and TOC were better interpreted by the Freundlich isotherm. This implied that the coconut shell-based activated carbon (CSAC) used in this study had both homogeneous and heterogeneous surfaces. The adsorption kinetics of TSS, COD, colour and TOC onto CSAC were fitted well by both pseudo-second-order (PSO) and Elovich kinetic models, which indicated that the adsorption process was mainly controlled by chemical sorption. The intra-particle diffusion (IPD) model plots showed that the adsorption was controlled by both IPD and film diffusion. Boyd plots further confirmed that the adsorption process was controlled by film diffusion. On the other hand, for EC, the adsorption equilibrium of TSS, colour and TOC onto aluminum (Al) hydroxide complexes were best fitted by the Freundlich isotherm whereas the adsorption of TSS was better interpreted by the Langmuir isotherm. This implied that the Al hydroxide complexes had both homogeneous and heterogeneous surfaces. The adsorption kinetics of TSS, COD, colour and TOC onto Al hydroxide complexes showed that the adsorption process for EC was mainly controlled by chemical sorption. Overall, the integrated EC-AD process has demonstrated great potential for POME treatment, and could be recommended as an alternative treatment method for wastewater. Universiti Malaysia Sarawak, (UNIMAS) 2020-01-16 Thesis NonPeerReviewed text en http://ir.unimas.my/id/eprint/29956/1/Sia.pdf Sia, Yong Yin (2020) Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption. Masters thesis, Universiti Malaysia Sarawak (UNIMAS).
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic TD Environmental technology. Sanitary engineering
spellingShingle TD Environmental technology. Sanitary engineering
Sia, Yong Yin
Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption
description Palm oil production involves multi-stage processes which release large volume of palm oil mill effluent (POME). Due to its high polluting environmental impact, POME must be treated prior to discharge. Integrated electrocoagulation (EC)-adsorption (AD) process has shown great potential to remove various organic and inorganic pollutants from wastewater. Up to date, no study has been found yet on POME treatment using integrated EC-AD process. Therefore, this study aims to investigate the feasibility of integrated EC-AD process as an alternative treatment for POME. In this study, EC was run simultaneously with AD to treat POME. The integrated EC-AD process achieved the highest removal of total suspended solid (TSS), chemical oxygen demand (COD), colour and total organic carbon (TOC) as compared to EC and AD stand-alone processes. The integrated EC-AD process successfully reduced 74-98% of TSS, 33-93% of COD, 85-99% of colour and 82-100% of TOC from POME at various POME initial concentrations ranging from 20% to 100%. The adsorption equilibrium of TSS was best fitted by the Langmuir isotherm whereas the adsorption of COD, colour and TOC were better interpreted by the Freundlich isotherm. This implied that the coconut shell-based activated carbon (CSAC) used in this study had both homogeneous and heterogeneous surfaces. The adsorption kinetics of TSS, COD, colour and TOC onto CSAC were fitted well by both pseudo-second-order (PSO) and Elovich kinetic models, which indicated that the adsorption process was mainly controlled by chemical sorption. The intra-particle diffusion (IPD) model plots showed that the adsorption was controlled by both IPD and film diffusion. Boyd plots further confirmed that the adsorption process was controlled by film diffusion. On the other hand, for EC, the adsorption equilibrium of TSS, colour and TOC onto aluminum (Al) hydroxide complexes were best fitted by the Freundlich isotherm whereas the adsorption of TSS was better interpreted by the Langmuir isotherm. This implied that the Al hydroxide complexes had both homogeneous and heterogeneous surfaces. The adsorption kinetics of TSS, COD, colour and TOC onto Al hydroxide complexes showed that the adsorption process for EC was mainly controlled by chemical sorption. Overall, the integrated EC-AD process has demonstrated great potential for POME treatment, and could be recommended as an alternative treatment method for wastewater.
format Thesis
author Sia, Yong Yin
author_facet Sia, Yong Yin
author_sort Sia, Yong Yin
title Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption
title_short Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption
title_full Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption
title_fullStr Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption
title_full_unstemmed Palm oil mill effluent (POME) treatment using electrocoagulation and adsorption
title_sort palm oil mill effluent (pome) treatment using electrocoagulation and adsorption
publisher Universiti Malaysia Sarawak, (UNIMAS)
publishDate 2020
url http://ir.unimas.my/id/eprint/29956/1/Sia.pdf
http://ir.unimas.my/id/eprint/29956/
_version_ 1772816277232943104
score 13.211869

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