Enzymes analysis, degradation kinetics, response surface optimization and heavy metal tolerance of the biodegradation of malachite green by Stenotrophomonas koreensis

A feasible approach for azo-dye (methyl orange) degradation by textile effluent isolate Serratia marcescens ED1 strain for water sustainability: AST identification, degradation optimization and pathway hypothesis

“…Seven carbon sources (Sucrose, Glucose, Maltose, Starch, Fructose, Mannitol, and Lactose) and nine nitrogen sources (organic: Peptone, Beef extract, and Tryptone and inorganic: NH₄Cl, (NH₄)₂C₂O₄, (NH₄)₂SO₄, KNO₃, NaNO₃) were used to test the effect of carbon and nitrogen (1g/100 mL) supplements on the bacterial growth medium enriched with MO dye. The negative control contains MO dye (200 mg/L) solution without bacterial inoculum or organic or mineral media supplements [ 41 ]. For isolate ED1, the maximum growth rate was observed at regular intervals for 5 days at an optimized pH 7.0 and temperature 37 °C.…”

Exhaustive ecotoxicological evaluation of the product of malachite green biodegradation by Stenotrophomonas koreensis

“…The biomass was re-suspended in sterile distilled water and adjusted to the nal concentration Log 10 CFU/mL = 6.2. Following the previous research on the industrial dye malachite green (Biswas et al, 2022), 5 mL of the bacterial suspension was added to 95 mL of malachite green oxalate solution and incubated at 37°C under static conditions for four hours to degrade the dye completely (S. koreensis degraded 98% dye in a span of 4 h without any media or supplementary nutrients). The decolorized product obtained after 4h was centrifuged at 10,000 rpm for 5 min to separate and discard the cell mass.…”

“…According to (Biswas et al 2022), GCMS/MS analysis of the product obtained upon the degradation of malachite green by S. koreensis indicated the presence of Michler's ketone, 4-N,N-dimethylaminophenol, Benzophenone, N, N-dimethylaniline, 4-(N-methylamino)-benzophenone, 4-aminobenzaldehyde, anionic canonical form of 4-aminobenzaldehyde, 4-(N,N-dimethylamino)benzoic acid, and 4-(N-methylamino) benzoic acid. All the compounds fall in the applicability domain of toxicity prediction models of GUSAR.…”

rGO/ZIF-8 Aerogel for Effective Removal of Malachite Green from Wastewater

“…5 Hence, effective measures for reducing and controlling the release of MG are urgently needed to protect water resources, ecosystems, and human health. Various methods have been utilized to mitigate the presence of MG in polluted water, including membrane separation, 6 photocatalytic 7 and biological 8 degradation, as well as adsorption. 9 Among these methods, adsorption has emerged as a widely applied method in water treatment due to its simplicity, efficiency, economic viability, and recyclability.…”

“…Hence, effective measures for reducing and controlling the release of MG are urgently needed to protect water resources, ecosystems, and human health. Various methods have been utilized to mitigate the presence of MG in polluted water, including membrane separation, photocatalytic and biological degradation, as well as adsorption …”