文献类型：期刊文献

英文题名：Investigation on desorption of petroleum hydrocarbon contaminants by active and passive particle self-rotation

作者：Xiong, Tai[1];Meng, Min[1];Wang, Ning[1];Xu, Xiao[1];Lu, Hao[1];Yang, Qiang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：9

期号：6

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：;EI(收录号：20213910954631);WOS:【SCI-EXPANDED(收录号:WOS:000707266000003)】；

基金：The work is financially supported by National Key R&D Program of China (2018YFC1802704, 2018YFC1801904) and National Natural Science Foundation of China (51678238, 51722806, 51608325, 21908057) .

语种：英文

外文关键词：Oily sludge; Particle self-rotation; Hydrocyclone; Petroleum hydrocarbon; Desorption

摘要：Particle self-rotation is a common phenomenon in the natural environment and industrial fluids. The particle surface renewal and centrifugation caused by particle self-rotation are the inherent mechanisms that enhance the desorption of pollutants. In this paper, a motor and rotary shear flow field are used to drive the self-rotation of the porous media Maifan stone particles and soil particles, respectively. An experimental device for active and passive particle self-rotation control is established to determine the driving parameters that influence the relationship between the diesel desorption efficiency of particles and particle self-rotation. Active self-rotation increased the diesel desorption efficiency of Maifan stone particles by approximately 65.1%. Alternating active and passive self-rotation, self-rotation speed, and temperature were positively correlated with diesel desorption efficiency. Passive particle self-rotation in the rotating shear flow field achieves balanced desorption efficiency in a single pass through the hydrocyclone. The desorption efficiency of underflow particles is approximately 50% higher than that of overflow particles. The experimental results show that both active and passive self-rotation can improve the diesel desorption of particles and suggest the possibility of reducing the amount of surfactant used.