caa a22 4500 605500606 CHVBK 20210128100556.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00253-015-6590-5 doi (NATIONALLICENCE)springer-10.1007/s00253-015-6590-5 Removal mechanism of low-concentration Cr (VI) in a submerged membrane bioreactor activated sludge system [Elektronische Daten] [Siqing Xia, Lijie Zhou, Zhiqiang Zhang, Slawomir Hermanowicz] Removal mechanism of low-concentration Cr (VI) (0.4mg/L) was studied in a submerged membrane bioreactor (SMBR) activated sludge system. SMBR was operated with the synthetic wastewater containing 0.4mg/L Cr (VI). Bio-removal and inactivation batch experiments were also carried out for studying the low-concentration Cr (VI) removal mechanism. SMBR activated sludge system recovered rapidly from the 0.4mg/L Cr (VI) shock to achieve the excellent removal of chemical oxygen demand (COD) and NH4 +-N. Sulfuricurvum kujiense grew quickly in the bacterial community of activated sludge after Cr (VI) addition. Cr (VI) was mainly removed by the adsorption of extracellular polymeric substances, probably in the form as R2(SOH+)2 .CrO4 2−. Only few of Cr (VI) was transferred into Cr (III) under aerobic condition. All the results indicated that the sulfur was probably involved in 0.4mg/L Cr (VI) removal process in SMBR. Springer-Verlag Berlin Heidelberg, 2015 Low-concentration Cr (VI) nationallicence Removal mechanism nationallicence Biosorption nationallicence Extracellular polymeric substances nationallicence Sulfur nationallicence Xia Siqing State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China aut Zhou Lijie State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China aut Zhang Zhiqiang State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China aut Hermanowicz Slawomir Department of Civil and Environmental Engineering, University of California, 94720, Berkeley, CA, USA aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/12(2015-06-01), 5351-5360 0175-7598 99:12<5351 2015 99 253 https://doi.org/10.1007/s00253-015-6590-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-015-6590-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xia Siqing State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Zhou Lijie State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Zhang Zhiqiang State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Hermanowicz Slawomir Department of Civil and Environmental Engineering, University of California, 94720, Berkeley, CA, USA aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/12(2015-06-01), 5351-5360 0175-7598 99:12<5351 2015 99 253