Optimization of novel nanocomposite powder for simultaneous removal of heavy metals from palm oil mill effluent (POME) by response surface methodology (RSM)

Anthonette Anak James, Md Rezaur Rahman (), Durul Huda, Mohammed M. Rahman, Jamal Uddin, Muhammad Khusairy Bin Bakri and Avishek Chanda
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Anthonette Anak James: Universiti Malaysia
Md Rezaur Rahman: Universiti Malaysia
Durul Huda: Swinburne University of Technology
Mohammed M. Rahman: King Abdulaziz University
Jamal Uddin: Coppin State University
Muhammad Khusairy Bin Bakri: Washington State University
Avishek Chanda: Washington State University

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2024, vol. 26, issue 2, No 32, 3589-3615

Abstract: Abstract The treatment of palm oil mill effluent (POME) via adsorption was investigated using a novel nanocomposite powder with the addition of titanium (IV) dioxide (TiO2) and montmorillonite clay (MMT). Reduced heavy metal content, turbidity, pH, chemical oxygen demand (COD), and total suspended solids (TSS) in POME supported this result. The adsorption processes were carried out in POME with pH 4.4, 658 FAU turbidity, 1256 mg/l COD, and 563 mg/l TSS at a constant mixing speed of 180 rpm for 48 h, with different dosages of adsorbent. The atomic adsorption spectrometry (AAS) analysis revealed that MMT clay was effective in removing lead (Pb) and zinc (Zn) by 86.7 and 97.3%, respectively, aided by the role of activated carbon and photocatalytic behavior of TiO2 to remove recalcitrant organic pollutants which result in 91.6% reduction in POME turbidity. The final pH value of POME was within the allowable discharged limit as stated in the Environmental Quality Act 1974 (EQA 1974). The response surface methodology (RSM) was modeled based on the COD and TSS analysis results. The findings determined that 1wt% KOH-AC, 0.628wt% TiO2, and 2wt% MMT clay were the best composition values of novel nanocomposite in showing the most effective reduction of COD and TSS. Graphical abstract

Keywords: POME; Adsorption; Respond surface methodology (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10668-022-02849-8

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