Decolorization of Remazol Black-B using a thermotolerant yeast, Kluyveromyces marxianus IMB3.
The ability of Kluyveromyces marxianus IMB3 to decolorize Remazol Black-B dye was investigated. The effect of environmental conditions, such as pH and temperature were examined. No noticeable effects on decolorization were observed when pH varied from 3.0-5.5. Maximum colour removal, 98%, was achieved at 37 degrees C. Little or no colour removal was detected when K. marxianus IMB3 was incubated under anaerobic conditions. Further investigation, in which decolorization was monitored under extreme temperatures and low pH (to inhibit growth) and using ten fold dense inoculum, revealed that decolorization was due to biosorption to the yeast cells and not due to a metabolic reaction.
Meehan
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C
Biotechnology Research Group, School of Applied Biological and Chemical Sciences, University of Ulster, Coleraine BT52 1SA, Northern Ireland.
Banat
I M
IM
McMullan
G
G
Nigam
P
P
Smyth
F
F
Marchant
R
R
D018533:Biomass; D004396:Coloring Agents / Q000009:adverse effects / Q000032:analysis / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods; D005618:Fresh Water / Q000032:analysis / Q000737:chemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000009:adverse effects / Q000032:analysis; D007494:Ireland; D007716:Kluyveromyces / Q000502:physiology*; D009282:Naphthalenesulfonates / Q000009:adverse effects / Q000032:analysis / Q000737:chemistry*; D009660:Northern Ireland; D013696:Temperature; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods* / Q000592:standards; D014874:Water Pollutants, Chemical / Q000009:adverse effects / Q000032:analysis; D018508:Water Purification / Q000191:economics / Q000379:methods* / Q000592:standards
D004396:Coloring Agents; D007220:Industrial Waste; D009282:Naphthalenesulfonates; D014874:Water Pollutants, Chemical; C063421:Remazol black B