Biosorption of Dye Molecules

Abstract

Water contamination due to dyes has drawn increased attention. Dyes in water bodies are greatly perceptible and pose tremendous threat to ecosystem. Thus removal of such dye molecules is a matter of concern. In the past various physical and chemical techniques have been employed for the removal of colour from wastewater. However most of these methods have certain drawbacks. Biological treatment is often efficient and economical. Many microorganisms are able to accumulate and degrade different pollutants. Yet even the biological methods have some shortcomings such as toxicity of biodegradation products and more.

Decolorization of selected azo dye by Lysinibacillus fusiformis W1B6: Biodegradation optimization, isotherm, and kinetic study biosorption mechanism

“…The decolorization of dye could occur by (1) biodegradation (the bacteria cell degrades the dye and produce the metabolite by-product), (2) bioaccumulation (the active uptake of the dye by the bacteria across the cell membrane or through the cell metabolic cycle), or (3) biosorption (passive uptake of dye by dead cell or inactive biomass) (Zaman et al., 2016; Wang and Hu, 2008). The studies in biodegradation process and biosorption efficiency were further conducted in order to determine the mechanism mode of the dye decolorization by L. fusiformis strain W1B6.…”

Reusability of brilliant green dye contaminated wastewater using corncob biochar and Brevibacillus parabrevis : hybrid treatment and kinetic studies

“…In developing and developed countries, lack of accessibility to clean water is a topic of serious concern. The occurrence of dye in trace amounts (< 1 mg/l) is visible and undesirable in water which makes the water unfit for irrigation, domestic uses, and human consumption [ 11 ]. The colored water reduces sunlight penetration in water bodies, lowers its photosynthetic activities, causes eutrophication, oxygen deficiency, and disturbs the entire aquatic balance [ 12 , 13 ].…”

Performance Assessment: Influence of Sorbate-Sorbent Interphase Using Magnetite Modified Graphene Oxide to Improve Wastewater Treatment

“…Lack of access to clean water is a severe issue in both industrialized and developing nations. Water that contains trace levels of color (less than 1 mg/L) is visibly unpleasant and inappropriate for irrigation, domestic use, or human eating [4].…”