Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, India.
J Environ Manage. 2012 Jun 30;101:118-23. doi: 10.1016/j.jenvman.2012.02.008. Epub 2012 Mar 8.
Coloured industry wastewaters often contain dyes and other toxic ingredients, and, therefore, pose serious threat to the receiving environment. Among the available methods the eco-friendly biological method has gained maximum attention due to its many advantages over the traditional methods. In the present study, continuous biological treatment of coloured wastewater from a textile dyeing industry was investigated using the white rot fungus Phanerochaete chrysosporium in a rotating biological contactor (RBC) reactor. The raw wastewater was diluted with an equal volume of either distilled water or media containing glucose at varying concentrations to study its effect on the decolourization process. Results revealed that the wastewater could be decolourized to an extent of more than 64% when diluted with media containing glucose; and, a maximum decolourization efficiency of 83% was obtained with 10 g/l glucose concentration. COD removal efficiencies were also found to be consistent with the decolourization efficiencies of the wastewaters. Further, the results were correlated with the enzyme activities of manganese peroxidase (MnP) and lignin peroxidase (LiP) by the fungus, which were found to play some significant role in decolourization of the wastewater. Results of replacing the costly carbon source glucose in the decolourization media with the more cheap molasses, however, revealed very high COD removal efficiency, but low decolourization efficiency of the industry wastewater.
有色工业废水通常含有染料和其他有毒成分，因此对受纳环境构成严重威胁。在现有的方法中，由于其相对于传统方法具有许多优势，环保的生物法得到了最大的关注。在本研究中，使用白腐真菌糙皮侧耳（Phanerochaete chrysosporium）在旋转生物接触器（RBC）反应器中连续处理来自纺织染色工业的有色废水。用等体积的蒸馏水或含有不同浓度葡萄糖的培养基稀释原废水，以研究其对脱色过程的影响。结果表明，用含有葡萄糖的培养基稀释废水时，废水的脱色率可达到 64%以上；当葡萄糖浓度为 10 g/l 时，最大脱色效率为 83%。废水的 COD 去除效率也与脱色效率一致。此外，结果与真菌产生的锰过氧化物酶（MnP）和木质素过氧化物酶（LiP）的酶活性相关联，这些酶在废水的脱色中发挥了一些重要作用。然而，用更便宜的糖蜜代替脱色培养基中昂贵的碳源葡萄糖的结果表明，废水的 COD 去除效率非常高，但脱色效率较低。
