The behavior of catalytic reduction of oxygen on modified electrodes of three types are studied using cyclic voltanuntry in an acidic solution. The first electrode modified with industrial dyestuff Direct Light Turquo...The behavior of catalytic reduction of oxygen on modified electrodes of three types are studied using cyclic voltanuntry in an acidic solution. The first electrode modified with industrial dyestuff Direct Light Turquoise GL(denoted as GL) has notable catalytic activity, two reduction peaks of O2 appear on CV curve (Ep is - 0. 25 V and - 0. 40 V respectively), but its stability is poor The second electrode modified with poly(4-vinyl-pyridine) and GL shows quite good catalytic performance. Both activity and stability are much better than those of the first electrode, in in the CV curve equals 200% of that of the lst electrode and the Ev for the first peak has shifted positively about 0. 05 V.The catalytic perfonnance of the third electrode modified with Nafion and GL is a little bid better than that of the first electrode, but is much worse than that of the second electrode. The reason of differences in the catalytic performances of these electrodes are discussed.展开更多
目的考查电-生物耦合法的强化降解性能.在生物水解反应器中添加微电场,以期能够促进水解,提高处理效果.方法在水解反应器中施加铁皮阳极,石墨柱阴极的微电场,形成电-生物耦合水解反应器,分别用电-生物耦合水解-好氧接触氧化法和生物水解...目的考查电-生物耦合法的强化降解性能.在生物水解反应器中添加微电场,以期能够促进水解,提高处理效果.方法在水解反应器中施加铁皮阳极,石墨柱阴极的微电场,形成电-生物耦合水解反应器,分别用电-生物耦合水解-好氧接触氧化法和生物水解-好氧接触氧化法处理直接耐晒蓝B2RL染料废水.停留时间：水解12 h,接触氧化7.95 h.电生物水解反应器采用电流密度依次为0.024、0.048、0.072、0.084和0.096 m A·cm^-2.结果电-生物系统对染料质量浓度、色度和CODCr的去除效果优于生物系统,对氨氮的去除效果则较生物系统差,且氨氮效果的差距随电流密度的增加而缩小.在电流密度为0.096 m A·cm^-2时,电-生物耦合工艺对染料质量浓度、色度、CODCr和氨氮的平均去除率分别为96.64%、95.83%、87.10%和51.43%.同期生物系统对应的平均去除率分别为42.80%、56.67%、79.23%和52.12%.结论电-生物耦合法对直接耐晒蓝B2RL染料废水的净化效果优于生物法.电-生物耦合法处理染料废水效果受到电流密度影响,在0.024~0.096 m A·cm^-2内电流密度越大处理效果越好.展开更多
文摘The behavior of catalytic reduction of oxygen on modified electrodes of three types are studied using cyclic voltanuntry in an acidic solution. The first electrode modified with industrial dyestuff Direct Light Turquoise GL(denoted as GL) has notable catalytic activity, two reduction peaks of O2 appear on CV curve (Ep is - 0. 25 V and - 0. 40 V respectively), but its stability is poor The second electrode modified with poly(4-vinyl-pyridine) and GL shows quite good catalytic performance. Both activity and stability are much better than those of the first electrode, in in the CV curve equals 200% of that of the lst electrode and the Ev for the first peak has shifted positively about 0. 05 V.The catalytic perfonnance of the third electrode modified with Nafion and GL is a little bid better than that of the first electrode, but is much worse than that of the second electrode. The reason of differences in the catalytic performances of these electrodes are discussed.
文摘目的考查电-生物耦合法的强化降解性能.在生物水解反应器中添加微电场,以期能够促进水解,提高处理效果.方法在水解反应器中施加铁皮阳极,石墨柱阴极的微电场,形成电-生物耦合水解反应器,分别用电-生物耦合水解-好氧接触氧化法和生物水解-好氧接触氧化法处理直接耐晒蓝B2RL染料废水.停留时间：水解12 h,接触氧化7.95 h.电生物水解反应器采用电流密度依次为0.024、0.048、0.072、0.084和0.096 m A·cm^-2.结果电-生物系统对染料质量浓度、色度和CODCr的去除效果优于生物系统,对氨氮的去除效果则较生物系统差,且氨氮效果的差距随电流密度的增加而缩小.在电流密度为0.096 m A·cm^-2时,电-生物耦合工艺对染料质量浓度、色度、CODCr和氨氮的平均去除率分别为96.64%、95.83%、87.10%和51.43%.同期生物系统对应的平均去除率分别为42.80%、56.67%、79.23%和52.12%.结论电-生物耦合法对直接耐晒蓝B2RL染料废水的净化效果优于生物法.电-生物耦合法处理染料废水效果受到电流密度影响,在0.024~0.096 m A·cm^-2内电流密度越大处理效果越好.
