Zhao He
Chinese Academy of Sciences
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Featured researches published by Zhao He.
Science China-chemistry | 2013
Shen Jian; Zhao He; Xie Yongbing; Cao Hongbin; Zhang Yi
In this paper, composite coagulants (PFS, PFSC05, PFSC1 and PFSC5), prepared by mixing polyferric sulfate (PFS) and cationic polyelectrolyte (CP) coagulants with different weight percent (Wp) of CP (Wp = 0%, 0.5%, 1% and 5%, respectively), were adopted to treat cyanide-containing wastewater. PFSC5 exhibited superior coagulation performances at optimal conditions: the removal of total cyanide (TCN) and chemical oxygen demand (COD) was 95%–97% and 50%–55%, respectively. The effects of CP on the properties and structure of flocs were investigated by laser diffraction instrument and small-angle laser light scattering (SALLS), respectively. The results show that the flocs of PFSC5 have higher growth rate, higher strength factor and lower recovery factor than other flocs. They are also much denser and more uniform owing to the higher fractal dimension (Df) and less microflocs (10–100 μm). Furthermore, the dense structure of the PFSC5 flocs can be restored after shear and is more resistant to hydraulic conditions. Particularly, detailed morphology evolution of the flocs was in-situ detected by on-line particle imaging. Due to strong ionic strength in wastewater, the CP in PFSC5 plays a significant role of adsorption, while the main mechanism of CP is electrostatic patch aggregation during the PFSC05 systems.
Archive | 2014
Zhao He; Cao Hongbin; Zhang Yi
Archive | 2014
Zhao He; Cao Hongbin; Li Yuping; Li Haibo; Xie Yongbing
Archive | 2014
Zhao He; Cao Hongbin; Fan Zhuangjun; Liu Chenming
Archive | 2017
Liu Chenming; Li Zehui; Li Yuping; Zhao He; Cao Hongbin; Zhang Yi
Archive | 2017
Zhao He; Cao Hongbin; Zhang Di
Archive | 2017
Zhao He; Cao Hongbin; Zhang Di
Archive | 2016
Zhao He; Du Penghui; Cao Hongbin; Zhang Di; Liu Chenming
Jilin Daxue Xuebao. Lixue Ban | 2016
Li Dong-Fei; Zhang Kewei; Zhao He; Hua Zhong; Li Haibo
Chemosphere | 2016
Du Penghui; Zhao He; Li Haitao; Zhang Di; Huang Ching-Hua; Deng Manfeng; Liu Chenming; Cao Hongbin