Electrocoagulation of Palm Oil Mill Effluent

Dept. of Chemistry, Faculty of Science, Maejo University, Sansai, Chiang Mai 50290, Thailand.
International Journal of Environmental Research and Public Health (Impact Factor: 2.06). 10/2008; 5(3):177-80. DOI: 10.3390/ijerph5030177
Source: PubMed


Electrocoagulation (EC) is an electrochemical technique which has been employed in the treatment of various kinds of wastewater. In this work the potential use of EC for the treatment of palm oil mill effluent (POME) was investigated. In a laboratory scale, POME from a factory site in Chumporn Province (Thailand) was subjected to EC using aluminum as electrodes and sodium chloride as supporting electrolyte. Results show that EC can reduce the turbidity, acidity, COD, and BOD of the POME as well as some of its heavy metal contents. Phenolic compounds are also removed from the effluent. Recovery techniques were employed in the coagulated fraction and the recovered compounds was analysed for antioxidant activity by DPPH method. The isolate was found to have a moderate antioxidant activity. From this investigation, it can be concluded that EC is an efficient method for the treatment of POME.

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Available from: Melissa Agustin, Dec 16, 2014
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    • "Considering the rapid proliferation of planted area and environmental problems related to that, it is necessary to decolorize the effluent prior to discharge into the environment to avoid the impact on quality of downstream drinking water. There are a number of physico-chemical processes in the treatment of POME such as adsorption using activated carbon (Zahrim et al. 2009), membrane filtration (Raja Ehsan Shah and Kaka Singh 2004; Sulaiman and Ling 2004) and electrocoagulation (Agustin et al. 2008). Comparatively, biological treatment is considered to be more effective, environment-friendly, economical and sustainable. "
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    ABSTRACT: Agricultural wastewater that produces color are of environmental and health concern as colored effluent can produce toxic and carcinogenic by-products. From this study, batch culture optimization using response surface methods indicated that the fungus isolated from the pineapple solid waste, Curvularia clavata was able to decolorize sterile palm oil mill effluent (POME) which is mainly associated with polyphenol and lignin. Results showed successful decolorization of POME up to 80 % (initial ADMI [American Dye Manufacturing Index] of 3,793) with 54 % contributed by biosorption and 46 % by biodegradation after 5 days of treatment. Analysis using HPLC and GC-MS showed the degradation of color causing compound such as 3-methoxyphenyl isothiocynate and the production of new metabolites. Ecotoxicity test indicated that the decolorized effluent is safe for discharge. To determine the longevity of the fungus for a prolonged decolorization period, sequential batch decolorization studies were carried out. The results showed that lignin peroxidase and laccase were the main ligninolytic enzymes involved in the degradation of color. Carboxymethyl cellulase (CMCase) and xylanase activities were also detected suggesting possible roles of the enzymes in promoting growth of the fungus which consequently contributed to improved decolorization of POME. In conclusion, the ability of C. clavata in treating color of POME indicated that C. clavata is of potential use for decolorization and degradation of agricultural wastewater containing polyphenolic compounds.
    Full-text · Article · Dec 2013 · Environmental Science and Pollution Research
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    • "These methods include the coagulation using chemicals, inorganic/organic polymers and electrical inputs [7], [8]. POME is also treated anaerobically to reduce the COD and BOD before its disposal [9]. "
    Dataset: Flucculant

    Full-text · Dataset · Nov 2013
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    • "These methods include the coagulation using chemicals, inorganic/organic polymers and electrical inputs [7], [8]. POME is also treated anaerobically to reduce the COD and BOD before its disposal [9]. "
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    ABSTRACT: This research is focusing on preparation of flocculants from waste Activated Bleaching Earth (wABE) for treatment of wastewater from different sources. The flocculants were prepared by digestion method using HCl or H2SO4 and NaOH. Samples of industrial wastewater including food and beverages, paper mill (Soaking & End Process) and Palm Oil Mill Effluent (POME) were used to determine the flocculation activity. Results showed that treatment of Food and beverages wastewater with HCl-flocculant dosage of 6.5% (v/v) showed COD and turbidity removal of up to 71.5% and 70.8% respectively. Wastewater from soaking of paper mill and end process paper mill showed a bit lower percentage of COD removal of about 40-50%. However, the turbidity and Total Suspended Solid (TSS) of end process paper mill were high (91.67% and 95.77%) respectively. The highest Chemical Oxygen Demand (COD), turbidity and total suspended solid (TSS) removal was obtained when POME were treated with 2%(v/v) H2SO4-flocculant where the COD, turbidity and TSS removals were 81.15%, 82.54% and 89.91% respectively. The results indicated that the new flocculant-coagulant has potential application for treatment of different industrial wastewaters.
    Full-text · Conference Paper · Jun 2013
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