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. 2018 Mar 1;209:9-16.
doi: 10.1016/j.jenvman.2017.12.030. Epub 2017 Dec 20.

Highly Efficient Magnetic Chicken Bone Biochar for Removal of Tetracycline and Fluorescent Dye From Wastewater: Two-stage Adsorber Analysis

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Highly Efficient Magnetic Chicken Bone Biochar for Removal of Tetracycline and Fluorescent Dye From Wastewater: Two-stage Adsorber Analysis

Akeem Adeyemi Oladipo et al. J Environ Manage. .

Abstract

Magnetic chicken bone biochar (MCB) was fabricated and characterised. The specific surface area, magnetisation value and pHpzc of the MCB were found to be 328 m2 g-1, 64.7 emu/g and 8.3 respectively. The adsorptive performance of MCB for rhodamine B dye (RB) and tetracycline (TC) removal in a single and two-stage stirred adsorber (TSA) was evaluated. The TSA reduced the pressure drops, mass transfer resistances, and fouling of the adsorbent. 63.0 g MCB is required to remove 75% of RB and TC in a single-stage system within 12 h. However, the optimised TSA confirmed that 33.2 g of MCB is needed to achieve 96% removal of TC and 22.2 g for RB within 180 min of 100 mgL-1 effluent solutions. The sorption was suitably described by the Freundlich mechanism. Based on the comparative performance, the MCB is considered a viable efficient and magnetically separable alternative adsorbent.

Keywords: Adsorption; Azo dyes; Magnetic bone biochar; Tetracycline; Two-stage stirred adsorber; Waste management.

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