Settling of Bentonite Particles in Gelatin Solutions for Stickwater Treatment

Shamsuddin, R.M. and Verbeek, C.J.R. and Lay, M.C. (2016) Settling of Bentonite Particles in Gelatin Solutions for Stickwater Treatment. In: UNSPECIFIED.

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Abstract

The settling of calcium and sodium bentonite coated with adsorbed protein from gelatin solutions was investigated across pH 3 to 9. The particle settling or sedimentation was achieved at acidic environment regardless of the amount of protein adsorbed by the particles. The settling is attributed to the formation of "house of cards" structure by bentonite platelets and it is strongly influenced by solution pH. The collapse of this formation resulted in floc formation or particle suspension where no settling can be observed. Few possible settling mechanisms were proposed based on the charge balance and interactions between bentonite platelets and protein molecules in the system. The findings are intended for treatment of gelatin-rich stickwater (meat rendering waste water) using bentonite as low-cost adsorbent. Integrating adsorption and settling into one unit operation has multiple benefits; reducing BOD by removing the proteins and bentonite is directly modified with organics and can be recovered via gravity settling for composite additive application. © 2016 Published by Elsevier Ltd.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 6; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138
Uncontrolled Keywords: Platelets; Process engineering; Proteins; Sedimentation; Suspensions (fluids); Waste treatment; Wastewater treatment, Acidic environment; Composite additives; gelatin; Low-cost adsorbents; Particle settling; Particle suspensions; Settling; Stickwater, Bentonite
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 16:19
Last Modified: 09 Nov 2023 16:19
URI: https://khub.utp.edu.my/scholars/id/eprint/7506

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