Lab-scale degradation of leather industry effluent and its reduction by Chlorella sp. SRD3 and Oscillatoria sp. SRD2: a bioremediation approach

Applied Water Science

卷:10

S. Santhosh¹  S. Jenny Angel²  A. M. Rajalakshmi²  R. Dhandapani²  M. Navaneethakrishnan² 

[1] Applied Microbiology Laboratory, Department of Microbiology, Periyar University;

[2] Fermentation Technology Laboratory, Department of Microbiology, Periyar University;

关键词: Chlorella sp.;    Phycoremediation;    Tannery;    Fluorescent;    Chlorophyll;   

DOI  :  10.1007/s13201-020-01197-0

来源: DOAJ

【 摘 要 】

Abstract The present study focuses on treatment of tannery effluent samples using microalgae and isolated cyanobacteria. Different concentrations of both the effluent samples were treated with the algal isolates and a highest biomass of 0.295 g/l was attained in 50% of concentration on the 12th day in BHEL site. The biomass production in Walajapet site was found to be 0.387 g/l in the effluent treated with 50% of algae. The treated effluent was tested for growth and chlorophyll content was estimated, Chlorella sp. SRD3 showed higher chlorophyll content. The 50% treatment was processed at large-scale treatment in lab and biomass yield of 0.65 ± 0.04 g/l was achieved in BHEL site and 0.49 ± 0.028 g/l in Walajapet site. The treatment led to higher reduction rates in BOD and COD levels in treated effluents. The BOD in effluent from BHEL site was reduced to 83.41% and that from Walajapet site showed 87.46% reduction, whereas the COD values also showed 78% reduction. Based on the results, effluent sample serves as a medium for growth and bioremediation of tannery effluents by microalga, Chlorella sp. SRD3 revealed promising results which may prove efficient in the near future.

【 授权许可】

Unknown