What is it about?

This study established a feedback network to evaluate alternatives regarding VB12 adsorption from wastewater. The network comprises environmental, economic and technological criteria and their feedbacks. Based on the net- work, the fuzzy matter-element theory was integrated with an analytical network process to rank the alternatives. Among five alternatives, activated carbon with KOH as activation media was suggested to be the optimal alternative for VB12 recycling from wastewater, while mesoporous activated carbon fibre was the least preferred alternative. Particularly, the adsorption technology reusing biomass ranked second to the optimal alternative, and has great application potential due to low costs and biological waste reuse. Sensitivity analysis does show that the ranking of alternatives was robust and was not subject to the change in weight.

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Why is it important?

This is the first study that set up the feedback network consisting of environmental, economic and technological criteria and selected associated elements to evaluate VB12 recycling from wastewater.


The proposed network and method are expected to be applied in other multi-criteria decision-making problems in terms of wastewater treatment and resources recovery.

PhD Xiaoguang Ouyang
Chinese University of Hong Kong

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This page is a summary of: Development of a fuzzy analytical network process to evaluate alternatives on vitamin B12 adsorption from wastewater, Computers & Chemical Engineering, December 2016, Elsevier, DOI: 10.1016/j.compchemeng.2016.09.009.
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