期刊
CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY
卷 31, 期 4, 页码 425-435出版社
CROATIAN SOC CHEMICAL ENGINEERING TECHNOLOGY
DOI: 10.15255/CABEQ.2017.1119
关键词
two-stage batch design; iron-modified zeolite; zinc; cadmium; optimization
资金
- Croatian Science Foundation [HRZZ-NAZELLT IP-11-2013-4981]
In highly congested industrial sites where significant volumes of effluents have to be treated in the minimum contact time, the application of a multi-stage batch reactor is suggested. To achieve better balance between capacity utilization and cost efficiency in design optimization, a two-stage batch reactor is usually the optimal solution. Thus, in this paper, a two-stage batch sorption design approach was applied to the experimental data of cadmium and zinc uptake onto iron-modified zeolite. The optimization approach involves the application of the Vermeulen's approximation model and mass balance equation to kinetic data. A design analysis method was developed to optimize the removal efficiency and minimum total contact time by combining the time required in the two-stages, in order to achieve the maximum percentage of cadmium and zinc removal using a fixed mass of zeolite. The benefits and limitations of the two-stage design approach have been investigated and discussed.
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