Md. Zahangir Alam
International Islamic University Malaysia, Malaysia
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 g-1) 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).
PDF References Citation
How to cite this article
Md. Zahangir Alam, 2004. Biosorption of Basic Dyes Using Sewage Treatment Plant Biosolids. Biotechnology, 3: 200-204.
DOI: 10.3923/biotech.2004.200.204
URL: https://scialert.net/abstract/?doi=biotech.2004.200.204
DOI: 10.3923/biotech.2004.200.204
URL: https://scialert.net/abstract/?doi=biotech.2004.200.204
REFERENCES
- Garg, V.K., R. Gupta, A.B. Yadav and R. Kumar, 2003. Dye removal from aqueous solution by adsorption on treated sawdust. Bioresour. Technol., 89: 121-124.
Direct Link - Malik, P.K. and S.K. Saha, 2003. Oxidation of direct dyes with hydrogen peroxide using ferrous ion as catalyst. Sep. Purif. Technol., 31: 241-250.
CrossRefDirect Link - Stephenson, R.J. and S.J.B. Duff, 1996. Coagulation and precipitation of a mechanical pulping effluent. I. Removal of carbon, colour and turbidity. Water Res., 30: 781-792.
CrossRef - Juang, R.S., F.C. Wu and R.L. Tseng, 1997. The ability of activated clay for the adsorption of dyes from aqueous solutions. Environ. Technol., 18: 525-531.
CrossRefDirect Link - Basibuyuk, M. and C.F. Forster, 2003. An examination of the adsorption characteristics of a basic dye (Maxilon Red BL-N) on to live activated sludge system. Process Biochem., 38: 1311-1316.
CrossRef - Aksu, Z., 2001. Biosorption of reactive dyes by dried activated sludge: Equilibrium and kinetic modelling. Biochem. Eng. J., 7: 79-84.
CrossRefDirect Link - Banat, F., S. Al-Asheh and L. Al-Makhadmeh, 2003. Evaluation of the use of raw and activated date pits as potential adsorbents for dye containing waters. Process Biochem., 39: 193-202.
CrossRef - Ho, Y.S. and G. McKay, 1998. Kinetic models for the sorption of dye from aqueous solution by wood. Process Saf. Environ. Prot., 76: 183-191.
CrossRefDirect Link - Annadurai, G., R.S. Juang and D.J. Lee, 2002. Use of cellulose-based wastes for adsorption of dyes from aqueous solutions. J. Hazard. Mater., 92: 263-274.
CrossRefPubMedDirect Link - Chu, W., 2001. Dye removal from textile dye wastewater using recycled alum sludge. Water Res., 35: 3147-3152.
Direct Link