Biosorption of Organic Dyes: Research Opportunities and Challenges - Green Chemistry for Dyes Removal from Wastewater - page 295

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Biosorption of Organic Dyes: Research
Opportunities and Challenges
Guilherme L. Dotto 1 , Sanjay K. Sharma 2 and Luiz A. A. Pinto* ,3
1 Chemical Engineering Department, Federal University of Santa Maria-UFSM,
Santa Maria, Brazil
2 Green Chemistry & Sustainability Research Group, Department of Chemistry,
JECRC University, Jaipur, India
3 School of Chemistry and Food, Federal University of Rio Grande-FURG,
Rio Grande-RS, Brazil
This chapter is dedicated to the research group of the Unit Operation
Laboratory-Federal University of Rio Grande (FURG), Brazil.
Abstract
Biosorption is an emerging green technology to remove organic dyes from effluents.
However, many efforts are still necessary to make biosorption an attractive option
in relation to the conventional treatment processes. This chapter presents some
important aspects regarding biosorption technology. Firstly, the general aspects of
biosorption are presented. Secondly, the classification, advantages and properties
of the biosorbents are discussed. Factors affecting biosorption are explained, after
which studies on equilibrium, thermodynamics, kinetics and mechanisms are
addressed. Finally, future perspectives and challenges are presented. It is expected
that this information will assist future research in the biosorption field.
Keywords: Biosorption, biosorbents, dyes, effluents, equilibrium, mechanism
Acronyms
DCEFs: Dye-containing effluents
EDS: Energy dispersive X-ray spectroscopy
FT-IR: Fourier transform infrared spectroscopy