Biosorption of basic dyes using sewage treatment plant biosolids

Alam, Md. Zahangir (2004) Biosorption of basic dyes using sewage treatment plant biosolids. Biotechnology, 3 (2). pp. 200-204. ISSN 1682-2978

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Abstract

Studies on the removal of three basic dyes (Basic Blue 3, Basic Red 22, Basic Black 9) from aqueous solutions by adsorption on Sewage Treatment Plant (STP) biosolids (sludge) as an adsorbent were carried out with an aim to obtain information on treating effluents from textile and/or dye industries. A series of experiments were undertaken in a batch adsorption technique to access the effect of the process variables i.e. initial dye concentration, contact time, initial pH, adsorbent dose, temperature and agitation rate. The adsorption capacity of basic dyes was higher (22-24 mg gG1) with the lower values of the temperature (25-30°C), adsorbent dosage (0.5-0.75% w/v), higher values of the initial pH (8-9) and agitation rate (150-200 rpm). The equilibrium in the solution was observed within 2 h of operation. The equilibrium isotherm for each dye was determined to describe the biosorption processes. The results showed that the equilibrium data were fitted by both of the Langmuir and Freundlich isotherms while Freundlich isotherms was slightly better fitted for Basic Blue 3 and Langmuir was for the Basic Black 9 in terms of regression coefficients (R2).

Item Type:	Article (Journal)
Additional Information:	4157/5025
Uncontrolled Keywords:	Sewage Treatment Plant (STP) biosolids, biosorption, basic dyes, adsorption isotherm, low-cost adsorbent
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr. Md. Zahangir Alam
Date Deposited:	17 Jul 2013 10:20
Last Modified:	17 Jul 2013 10:20
URI:	http://irep.iium.edu.my/id/eprint/5025

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