Optimization studies on production of a salt-tolerant protease from Pseudomonas aeruginosa strain BC1 and its application on tannery saline wastewater treatment
AUTOR(ES)
Sivaprakasam, Senthilkumar, Dhandapani, Balaji, Mahadevan, Surianarayanan
FONTE
Braz. J. Microbiol.
DATA DE PUBLICAÇÃO
2011-12
RESUMO
Treatment and safe disposal of tannery saline wastewater, a primary effluent stream that is generated by soaking salt-laden hides and skin is one of the major problems faced by the leather manufacturing industries. Conventional treatment methods like solar evaporation ponds and land composting are not eco-friendly as they deteriorate the ground water quality. Though, this waste stream is comprised of high concentration of dissolved proteins the presence of high salinity (1-6 % NaCl by wt) makes it non-biodegradable. Enzymatic treatment is one of the positive alternatives for management of such kind of waste streams. A novel salt-tolerant alkaline protease obtained from P.aeruginosa (isolated from tannery saline wastewater) was used for enzymatic degradation studies. The effect of various physical factors including pH, temperature, incubation time, protein source and salinity on the activity of identified protease were investigated. Kinetic parameters (Km , Vmax) were calculated for the identified alkaline protease at varying substrate concentrations. Tannery saline wastewater treated with identified salt tolerant protease showed 75 % protein removal at 6 h duration and 2 % (v/v) protease addition was found to be the optimum dosage value.
Documentos Relacionados
- Pectin Hydrolysis by Certain Salt-Tolerant Yeasts1
- Quantitation of pH- and salt-tolerant subpopulations from Clostridium botulinum.
- Drought- and salt-tolerant plants result from overexpression of the AVP1 H+-pump
- Purification and Properties of a Novel Xanthan Depolymerase from a Salt-Tolerant Bacterial Culture, HD1
- Isolation and characterization of a high salt-tolerant and glyphosate-degrading strain of Agrobacterium tumefaciens BZ8