Decolorization of Textile Dyes and Degradation of Mono-Azo Dye Amaranth by Acinetobacter calcoaceticus NCIM 2890

Abstract

Acinetobacter calcoaceticus NCIM 2890 (A. caloaceticus) was found to decolorize 20 different textile dyes of various classes. Decolorization of an azo dye amaranth was observed effectively (91%) at static anoxic condition, whereas agitated culture grew well but showed less decolorization (68%) within 48 h of incubation. Induction of intracellular and extracellular lignin peroxidase, intracellular laccase, dichlorophenol indophenol (DCIP) reductase and riboflavin reductase represented their involvement in the biodegradation of amaranth. The products obtained after degradation of Amaranth were characterized as naphthalene sulfamide, hydroxyl naphthalene diazonium and naphthalene diazonium. The germination and growth of Sorghum vulgare and Phaseolus mungo seeds, and the growth of E. coli and Bacillus substilis were not inhibited by the metabolic products of the dye.

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

“…As the dye concentration increased in the culture medium, a decline in color removal was attained. This might be attributed to the toxicity of dye to bacterial cells through the inhibition of metabolic activity, saturation of the cells with dye products, inactivation of transport system of the dye or the blockage of active sites of azo reductase enzymes by the dye molecules (Moosvi et al 2007;Ghodake et al 2011). Under given experimental conditions, 57.9 % decolorization was attained upon using 500 mg/L of the dye after 24 h. Similar observations were also reported during decolorization of reactive violet 5 (Moosvi et al 2005), Direct Red 81 (Junnarkar et al 2006), azo dye acid orange (Joshi et al 2008), and Brown 3REL (Dawkar et al 2008).…”

“…Similar results were also reported for the biodegradation of sulfonated azo dye by Brevibacterium sp. (Franciscon et al 2012), of methyl red by Sphingomonas paucimobilis (Ayed et al 2011), and of mono-azo dye Amaranth by Acinetobacter calcoaceticus (Ghodake et al 2011). However, many reports described the adsorptive removal of azo dye using bacteria and fungi (Das et al 2012;Selvam and Shanmuga Priya 2012).…”

“…Thus, a wide range of bacteria able to decolorize azo dyes, including Grampositive and Gram-negative bacteria (Asad et al 2007;Kalme et al 2007;Ayed et al 2011;Ghodake et al 2011;Franciscon et al 2012), fungi Kumar Praveen and Sumangala 2012;Gopinath et al 2013), and yeast Tastan et al 2010) were isolated. Mixed fungalbacterial consortia were also described for azo dye biodegradation (Lade et al 2012).…”

Extracellular laccase production and phenolic degradation by an olive mill wastewater isolate

“…Our study confirmed that this isolate was able to secrete extracellular laccase, showing such a feature in an isolate obtained from an OMWW for the first time. However, the intracellular laccase production of 0.019 U/mg of protein/min after 48 h was reported in A. calcoaceticus (Ghodake et al, 2011). The laccase activity of the new isolate, A. REY, showed extracellular laccase activity (1.5 U/mL) that was almost identical to a pure bacterial strain of Streptomyces cyaneus that exhibited 2 U/mL (Margot et al, 2013).…”

Efficient Adsorptive Removal of Toxic Amaranth Dye from Water using a Zeolitic Imidazolate Framework

“…To date, many approaches have been proposed to remove AMR from water, including chemical oxidation Lin et al, 2017), biological degradation (Ghodake et al, 2011), and adsorption (Ahmad and Kumar, 2011;Mittal et al, 2005;Naidu et al, 2014;Nanganoa et al, 2014;Zargar et al, 2009) . While chemical oxidation and biological degradation can decompose AMR, the degradation products of AMR are also validated to cause toxic and carcinogenic effects (Chung et al, 1978).…”