Decolorization potential of mixed microbial consortia for reactive and disperse textile dyestuffs

Abstract

Four different aerobic mixed consortia collected from basins of wastewater streams coming out of dying plants of Crescent Textile (CT), Sitara Textile (ST), Chenab Fabrics (CF) and Noor Fatima Textile (NF), Faisalabad, Pakistan were applied for decolorization of Drimarene Orange K-GL, Drimarene Brilliant Red K-4BL, Foron Yellow SE4G and Foron Blue RDGLN for 10 days using the shake flask technique. CT culture showed the best decolorization potential on all dyestuffs followed by ST, NF and CF, respectively. CT could completely decolorize all dyes within 3-5 days. ST cultures showed effective decolorization potential on Foron Yellow SE4G and Drimarene Brilliant Red K-4BL but complete color removal was achieved after 4 and 7 days, respectively. NF culture showed 100% decolorization efficiencies on Foron Yellow SE4G and Foron Blue RDGLN but it took comparatively longer time periods (5-7 days). Where as, the NF culture had decolorized only 40% and 50% of Drimarene orange and red, respectively, after 10 days. CF caused complete decolorization of Foron Blue RDGLN and Drimarene Brilliant Red K-4BL after 4 and 8 days, respectively but it showed poor performance on other two dyes.

Azo Dyes, Their Environmental Effects, and Defining a Strategy for Their Biodegradation and Detoxification

“…Posebno važni onečišćivači voda su industrije koje proizvode umjetne boje ili se u svome tehnološkom procesu koriste bojama, primjerice: tekstilna industrija, kožarska industrija, industrija papira, prehrambena industrija (7), kemijske čistionice, proizvodnja plastike (24), farmaceutska i kozmetička industrija (5). Glavne industrije u kojima nastaju obojene otpadne vode jesu tekstilna industrija i industrija proizvodnje boja (4,25,26).…”

“…Idealni cilj ovih procesa bila bi potpuna mineralizacija boja do CO 2 , što je znatno niže od maksimalno dopuštenih koncentracija nekih drugih organskih spojeva u obrađenoj otpadnoj vodi (22). Fizikalno-kemijske metode uklanjanja boja imaju tehnička i ekonomska ograničenja (14), a njihovi nedostaci (tablica 2) uključuju visoku cijenu, nedovoljnu učinkovitost i nastanak toksičnih sastojaka razgradnje (26,33). Procesi koji u novije vrijeme u području fi zikalno-kemijske obrade postižu najbolje rezultate napredni su oksidacijski procesi (engl.…”

Bioremediation Potential of Mixed White Rot Culture of Pleurotus Ostreatus IBL-02 and Coriolus Versicolor IBL-04 for Textile Industry Wastewater

“…Most of the studies on the biotreatment of dyes and effluents deal mainly with decolorization by single fungal cultures with few reports on mixed cultures [11] and reduction in toxicity [14,15]. In our previous studies [11,16,17] the single WRF cultures have been found to show variable potential on different dyes, thereby limiting their use for treatment of effluents that contain mixtures of different dyes.…”

“…They can degrade to non detectable levels or even completely eliminate a variety of xenobiotics, including synthetic dyes [1,11]. This biodegradation capacity is assumed to result from the activities of non-specific ligninolytic enzymes secreted by these fungi, including lignin peroxidases, manganese peroxidases and laccases.…”

“…In our previous studies [11,16,17] the single WRF cultures have been found to show variable potential on different dyes, thereby limiting their use for treatment of effluents that contain mixtures of different dyes. The present study was focused on bioremediation of dye based industrial effluents by a mixed culture of indigenous white rot fungi Pleurotus ostreatus IBL-02 and Coriolus versicolor IBL-04.…”