Project 89: Selectively Capture of Ionic Resource from Micro-electronic Wastewaters Using an Electrochemical Membrane Reactor

Contact Information

Prof. Jiahui Shao

Email: jhshao@sjtu.edu.cn

Project Description and Objectives

Resource capture is an effective technique for the removal of recalcitrant pollutants in micro-electronic wastewaters. However, the selective capture of ion resource from multi-pollutant wastewater remains a significant challenge. In the lab, we proposed an electrochemical membrane reactor (EMR) for the in-situ capture of fluoride and silica as hexafluorosilicate salts. The EMR combines a bipolar membrane to produce protons for SiF62- in-situ generation from the reaction between fluoride and silica. An internal integrated ultrafiltration (UF) membrane was used to reject nanoparticles/organics while providing ion channels for protons and SiF62- migration. The key operation parameters need to be optimized to evaluate the recovery performance of the EMR in terms of Na2SiF6 yield, purity, current efficiency and energy consumption. Na2SiF6 recovery mechanisms also will be elucidated. 

Eligibility Requirements

Major in environmental engineering, chemical engineering, polymer or other related areas

Motivation to work

Willing to conduct lab experiments 

Main Tasks

Optimize key operation parameters to evaluate the recovery performance of the EMR in terms of Na2SiF6 yield, purity, current efficiency and energy consumption.

Elucidate Na2SiF6 recovery mechanisms.

Website

Lab: http://sjtu.cf.labscout.cn/lims/

School: http://sese.sjtu.edu.cn/