【摘 要】
：
The effects of various general and heavy metal ions in acidic cadmium-containing wastewater on SBR desulfurization and cadmium removal under different concentrations were studied. CrO42-and S2- inhibited SRB mineralization, and Mg2+, Ca2+, Fe2+, and Fe3+
【机 构】
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College of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 4
【出 处】
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武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
The effects of various general and heavy metal ions in acidic cadmium-containing wastewater on SBR desulfurization and cadmium removal under different concentrations were studied. CrO42-and S2- inhibited SRB mineralization, and Mg2+, Ca2+, Fe2+, and Fe3+ promoted SRB mineralization at low concentration (Hg2+>Cu2+>Ni2+>Zn2+>Pb2+>Mn2+>Cr3+. Furthermore, the inverted microscopy and scanning electron microscopy (SEM) were used to observe the sediment crystallization process from macroscopic and microscopic viewpoints in the optimized ion environment. The experimental results show that under the mineralization of SRB, cadmium sediment crystallization is mainly divided into the rapid growth of bacteria, crystal nucleus production, block formation, and crystallization occuration. At the same time, X-ray diffraction (XRD) and energy-dispersive spectra (EDS) have also confirmed the sediment and crystallization.
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