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- W3217357795 abstract "This work evaluates the efficiency of a novel treatment method for raw POME based on coagulation and adsorption process. The chemical oxygen demand (COD) and colour reduction of POME using chickpea as coagulant in the coagulation–flocculation pre-treatment was evaluated. The adsorption of the remaining contaminants in the coagulated POME was done by using granular activated carbon (GAC). To achieve the optimum process variables and desired process status, Central Composite Design (CCD) of the Response Surface Methodology (RSM) was applied. The optimum removal efficiency parameters using chickpea were found to be 2 g, pH 6, and mixing speed of 150 rpm. Under these conditions, the COD and colour in POME were reduced by 44% and 54%, respectively. On the other hand, the findings from batch study show that pH 4 and 15 g GAC was the optimum pH and dosage at 4 h of contact time for COD (88%) and colour (91%) removal of the chickpea pretreated POME. ANOVA statistical outputs revealed the quadratic response function introduced significant responses for color and COD at the accuracy of 95% with p-values ≤ 0.05 for both cases. The findings proposed that the combined coagulation–adsorption treatment as an efficient, inexpensive and eco-friendly alternative for raw POME treatment. Evaluation of the adsorption equilibrium in the course of colour and COD removal by means of GAC was performed by using both Langmuir and Freundlich isotherms. However, the results are indicating that the Langmuir isotherm model is more accurate to describe the removal processes." @default.
- W3217357795 created "2021-12-06" @default.
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- W3217357795 date "2022-02-01" @default.
- W3217357795 modified "2023-09-27" @default.
- W3217357795 title "Palm oil mill effluent treatment using combination of low cost chickpea coagulant and granular activated carbon: Optimization via response surface methodology" @default.
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- W3217357795 doi "https://doi.org/10.1016/j.gsd.2021.100709" @default.
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