Recovery of waste cooking palm oil as a crosslinker for inverse vulcanized adsorbent to remove iron (Fe3+) ions

Nayeem, Abdullah and Mohd Faizal, Ali and Jun Haslinda, Shariffuddin (2024) Recovery of waste cooking palm oil as a crosslinker for inverse vulcanized adsorbent to remove iron (Fe3+) ions. Journal of Environmental Chemical Engineering, 12 (1). pp. 1-22. ISSN 2213-3437. (Published)

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Gas and oil reservoirs around the world leave megatons of unused elemental sulfur as industrial byproducts which has been successfully used in inverse vulcanization. We reported the successful application of inverse vulcanized porous adsorbent from waste cooking palm oil (WCO) to remove ferric (Fe3+) ions. Sodium chloride (NaCl) acted as a porogen to get the porous polysulfide. The removal of Fe3+ was observed through the atomic absorption spectroscopic (AAS) technique. The effects of pH (3,7, and 11) and initial concentration (35, 40, 45 mg/L) of Fe3+ solution, and dosage (10, 15, and 20 g/100mL) on Fe3+ adsorption were studied to determine the best removal condition. Later, fixing the best parameters (pH 3, 40 mg/L, 20 g/100mL), Langmuir and Freundlich equations were used to study the adsorption isotherm. Adsorption kinetics were described using linear and nonlinear pseudo-first and second-order reactions. The Freundlich isothermal model and linear pseudo- second-order kinetics fit best for the removal process. The comparison between the pre and post-adsorption analyses using FTIR, SEM-EDX, and the isothermal model confirmed the physisorption of Fe3+. The current study concluded with some further scopes of the adsorbent for diverse removal applications.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Inverse vulcanization; Polysulfide adsorbent; Iron removal; Heavy metal; Waste cooking palm oil; Reaction kinetics
Subjects: T Technology > TP Chemical technology
Faculty/Division: Institute of Postgraduate Studies
Centre for Sustainability of Ecosystem & Earth Resources (Earth Centre)
Faculty of Chemical and Process Engineering Technology
Depositing User: Ms. Nurul Ain Ismail
Date Deposited: 11 Jan 2024 06:58
Last Modified: 20 May 2024 08:32
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