CAJ | 학술논문

采用具有三隔室重复单元的电渗析中试装置从丙烯酸丁酯废水中回收有机酸，考察了操作电压对转化过程的影响。结果表明，操作电压对装置的处理能力、能耗和回收有机酸浓度均具有重要影响。随着操作电压从50 V 增加到100 V，平均电流密度从16．91 mA/cm 2线性增加到55．22 mA/cm 2，电渗析时间显著缩短；生产单位有机酸的能耗从0．10 kW? h/mol 线性增加到0．20 kW? h/mol。操作电压从50 V 提高到100 V 时，伴随有机酸根迁移的水量增加，而伴随钠离子迁移的水量减少，使50 V 下获得的有机酸浓度较高，而 NaOH 浓度较低。
채용구유삼격실중복단원적전삼석중시장치종병희산정지폐수중회수유궤산，고찰료조작전압대전화과정적영향。결과표명，조작전압대장치적처리능력、능모화회수유궤산농도균구유중요영향。수착조작전압종50 V 증가도100 V，평균전류밀도종16．91 mA/cm 2선성증가도55．22 mA/cm 2，전삼석시간현저축단；생산단위유궤산적능모종0．10 kW? h/mol 선성증가도0．20 kW? h/mol。조작전압종50 V 제고도100 V 시，반수유궤산근천이적수량증가，이반수납리자천이적수량감소，사50 V 하획득적유궤산농도교고，이 NaOH 농도교저。
A three-chambered bipolar membrane electrodialysis pilot module was used to recover organic acid from butyl-acrylate wastewater.Influence of operation voltage on the process was investigated.It was indicated that the operation voltage had significant effects on electrodialysis capacity, energy consumption and recovered organic acid concentration of the module.As the operation voltage increased from 50 V to 100 V, average current density increased from 16.91 mA/cm 2 to 55.22 mA/cm 2 linearly, and the electrodialysis duration was shortened significantly.Energy consumption for organic acid production increased from 0.10 kW? h/mol to 0.20 kW? h/mol linearly.As the operation voltage increased from 50 V to 100 V, water migrating with organic acid anion increased while that migrating with sodium cation decreased.As a result, higher organic acid concentration and lower NaOH concentration were achieved at operation voltage of 50 V.