Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 250, Issue -, Pages -Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2019.109548
Keywords
Denitriflcation; Biomineralization; Cadmium removal; Community diversity; Biofilm reactor
Categories
Funding
- National Natural Science Foundation of China (NSFC) [51678471, 51978556]
- Shaanxi Science Fund for Distinguished Young Scholars
- Key Research and Development Program in Shaanxi Province [2018ZDXM-SF-029]
Ask authors/readers for more resources
A moving-bed biofilm reactor (MBBR) containing immobilized Acinetobacter sp.CN86 was operated to investigate the simultaneous denitrification, bio-mineralization and cadmium removal performance. Effects of hydraulic residence time (HRT) (4 h, 6 h and 8 h), pH (6.0, 7.0 and 8.0) and influent Cd2+ concentrations (10 mg/L, 30 mg/L and 50 mg/L) were assessed on the simultaneous removal of nitrate, Cd2+ and Ca2+. Results indicate that the highest pollutant removal efficiency (98.33% (1.866 mg/Lh) for NO3--N; 99.36% (1.242 mg/ Lh) for Cd2+; 68.80% (15.480 mg/Lh) for Ca2+) was achieved under the conditions of a hydraulic residence time of 8 h, pH of 7.0 and initial Cd2+ concentration of 10 mg/L. Analyses of microbial distribution and community structures showed that Acinetobacter sp.CN86 was the main contributor (occupy 15.3% at the species level) to the effective removal of multiple pollutants in the MBBR. In addition, the main gas and precipitation components in the biofilm reactor were identified by gas chromatography, scanning electron microscope, and X-ray diffraction analyses.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available