Influence of inorganic salt on aerobic biodegradability of dyestuffs

Article type: Research Article

Authors: Zhan, Xin-min | Wang, Jian-long | Wen, Xiang-hua | Feng, Ye-cheng | Qian, Yi

Affiliations: The Key Joint Laboratory on Environmental Simulation and Pollution Control, Department of Environmental Sciences and Engineering, Tsinghua University, Beijing 100084, China

Note: [] Corresponding author

Abstract: In this paper, the influence of inorganic salt on aerobic biodegradability of dyestuffs was studied by means of semicontinuous activated sludge method. It was found that: biodegradability of dyestuffs would decrease with the increase of the concentration of NaCl; however, biodegradability in the condition of NaCl = 30 g/L was better than that in the condition of NaCl =15 g/L; in the three NaCl conditions, biodegradability of tasted dyestuffs followed the following order: NaCl= 0 g/L > NaCl= 30g/L > NaCl= 15 g/L.

Keywords: biodegradability, dyestuffs, inorganic salt, degradation efficiency

Journal: Journal of Environmental Sciences, vol. 12, no. 4, pp. 416-421, 2000