Enhanced adsorption of quaternary amine using modified activated carbon

Prahas, Devarly and M. J. Wang, . and Ismadji, Suryadi and J.C. Liu, . (2014) Enhanced adsorption of quaternary amine using modified activated carbon. Water Science & Technology, 69 (10). pp. 2085-2092. ISSN 0273-1223

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/24845325

Abstract

This study examined different methodologies to modify activated carbon (AC) for the removal of quaternary amine, tetramethylammonium hydroxide (TMAH), from water. Commercial carbon (WAC) was treated by nitric acid oxidation (NA-WAC), silica impregnation (SM-WAC0.5), and oxygen plasma (P10-WAC), and their characteristics and adsorption capacity were compared. The Langmuir model fitted the equilibrium adsorption data well under different pH. The maximum adsorption capacity of WAC was 27.77 mg/g, while those of NA-WAC, SM-WAC 0.5, and P10-WAC were 37.46, 32.83 and 29.03 mg/g, respectively. Nitric acid oxidation was the most effective method for enhancing the adsorption capacity of TMAH. Higher pH was favorable for TMAH adsorption. Desorption study revealed that NA-WAC had no considerable reduction in performance even after five cycles of regeneration by 0.1 N hydrochloric acid. It was proposed that electrostatic interaction was the main mechanism of TMAH adsorption on activated carbon.

Item Type: Article
Uncontrolled Keywords: Activated carbon, adsorption, amine, plasma, silica, tetramethylammonium hydroxide (TMAH)
Subjects: Engineering > Chemical Engineering
Divisions: Journal Publication
Depositing User: Suryadi. Ismadji
Date Deposited: 13 Jul 2016 08:04
Last Modified: 19 Jul 2018 08:09
URI: http://repository.wima.ac.id/id/eprint/4191

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