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Tea Dust as a Potential Low-Cost Adsorbent for the Removal of Crystal Violet from Aqueous Solution

Khan, Maksudur R. and Rahman, Md. Wasikur and Ong, Huei Ruey and Ainihayati, Ismail and Cheng, C. K. (2016) Tea Dust as a Potential Low-Cost Adsorbent for the Removal of Crystal Violet from Aqueous Solution. Desalination and Water Treatment, 57 (31). pp. 14728-14738. ISSN 1944-3994

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Abstract

The present work demonstrates tea dust (TD) as a potential low-cost adsorbent for the removal of crystal violet (CV) from aqueous solution by batch adsorption technique. Reaction kinetics and isotherm studies were carried out under various conditions of initial dye concentration, contact time, adsorbent dosage, and pH. The adsorbent was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR) and Brunauer–Emmett–Teller. FTIR results showed complexation and ion exchange appeared to be the principle mechanism for CV adsorption. The adsorption isotherm data were fitted to Langmuir and Freundlich equations; and the maximum adsorption capacity was found to be 175.4 mg/g. The removal of CV by TD followed the unified approach model. Therefore, TD can be employed as an efficient and cost-effective adsorbent in industrial wastewater treatment for the removal of basic dyes.

Item Type: Article
Uncontrolled Keywords: Adsorption; Tea Dust; Crystal Violet; Isotherm; Kinetics; Unified Approach Mode
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Dr. MD Maksudur Rahman Khan
Date Deposited: 05 Apr 2016 00:57
Last Modified: 11 Jan 2018 03:11
URI: http://umpir.ump.edu.my/id/eprint/12596
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