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Query: UMLS:C0155339 (Brown)
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The decolorization potential of the consortium HM-4 constituted by mixing four laboratory isolates identified as Bacillus cereus (BN-7), Pseudomonas putida (BN-4), Pseudomonas fluorescens (BN-5) and Stenotrophomonas acidaminiphila (BN-3) was compared with that of individual isolates. Six different azo dyes viz., C.I. Acid Red 88 (AR-88), C.I. Acid Red 119 (AR-119), C.I. Acid Red 97 (AR-97), C.I. Reactive Red 120 (RR-120), C.I. Acid Blue 113 (AB-113) and C.I. Acid Brown 100 (AB-100) were used in this study. The individual bacterial isolates were not able to completely decolorize these dyes, except for dyes AR-119 and AB-113. The consortium HM-4 was able to decolorize all the dyes used at an initial dye concentration of 20 mg L(-1) at a significantly higher rate as compared to that achieved by individual isolates.
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PMID:Comparative studies on potential of consortium and constituent pure bacterial isolates to decolorize azo dyes. 1628 80

Bovine collagen was functionalized by extensive process modifications for fabricating tanned bovine collagen fibers (TBCFs), as a new semisynthetic macro-, meso- and micro- porous adsorbent, of unprecedented physicochemical properties and excellent industrial waste removal efficiency. Mere or interactive effects were rationally understood, via analyzing monomer-dimer equilibrium, H-/J-aggregate formation, H-bonding, metachromasia, dye-dye complex formation etc., through extensive UV-vis analyses, during removal of acidic, like Acid Brown 369 (AB369), Acid Red 131 (AR131) and Acid Blue 113 (AB113) and basic, like Methylene Blue (MB) dyes. A new strategy was introduced to determine the allocations of these dyes, within macro-, meso- and micro-pores of TBCF, confirmed by FTIR, TGA, DTG, DSC, XRD, SEM, EDX analyses, of both loaded and unloaded TBCFs, and by measuring isotherm, kinetics, diffusion and thermodynamics parameters of adsorption. Freundlich, Langmuir and Sips models were best fitted to AR131, AB113 and AB369, respectively. Interactive effects of concentration, temperature and time, on adsorption capacities (ACs), were optimized via response surface methodology (RSM). ACs of AR131, AB113 and AB369 were 38.29, 78.14 and 73.25mgg-1, respectively, at optimum conditions (i.e. adsorbent dose=0.25g, pHi=4, concentration=200ppm and temperature=299K).
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PMID:Fabrication of semisynthetic collagenic materials for mere/synergistic adsorption: A model approach of determining dye allocation by systematic characterization and optimization. 2841 99