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- Title
Application of Activated Biomaterial in the Rapid Start-up and Stable Operation of Biological Processes for Removal Cadmium from Effluent.
- Authors
Wu, Minxi; Yan, Xing; Liu, Keyi; Deng, Le
- Abstract
With the aim of treating effluent containing Cd, a low-cost and efficient technique has been established in this work. By a combination of sulfate-reducing bacteria (SRB), carboxymethyl konjac glucomannan (CMKGM), and nickel-iron bimetallic (Ni/Fe) nanoparticles, we greatly enhanced Cd removal and bacteria resistance to metals toxicity. Furthermore, it had much higher removal efficiencies (99.72%) than SRB (57.38%), CMKGM (52.46%), and Ni/Fe (58.91%) systems after 48 h in the treat processes. The parameters effecting Cd removal of this system were obtained: the initial Cd concentrations 150 mg/L, optimum pH 7.0, optimum temperature 37 °C, optimum time 48 h, respectively. CMKGM and SRB played significant roles in Cd adsorption as they contained many functional groups on their surfaces. In addition, SRB promoted the degeneration of inorganic contaminants. The mechanism of adsorption was clarified by a serious of analysis. Overall, this study provided a highly efficient activated biomaterial for the practical treatment of Cd in wastewater.
- Subjects
CADMIUM; NANOPARTICLES; SEWAGE; BIMETALLIC catalysts; SEWAGE purification; METAL ions; HEAVY metals removal (Sewage purification)
- Publication
Water, Air & Soil Pollution, 2017, Vol 228, Issue 1, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-016-3210-7