当前位置: X-MOL 学术Sci. Total Environ. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Automatic microbial electro-Fenton system driven by transpiration for degradation of acid orange 7.
Science of the Total Environment ( IF 9.8 ) Pub Date : 2020-04-06 , DOI: 10.1016/j.scitotenv.2020.138508
Xiaofang Yu 1 , Wenna Fu 1 , Minhua Jiang 2 , Gongming Liu 1 , Yan Zou 3 , Shuiliang Chen 1
Affiliation  

Microbial electro-Fenton system (MEFS) shows potential application for degradation of recalcitrant pollutants. In order to simplify the MEFS and adapt to the practical application situations, such as water, soil or sludge remediation, we developed an automatic MEFS (AMEFS) for degradation of a recalcitrant dye, acid orange 7. The AMEFS contained a microchannel-structured carbon decorated with iron oxides as electro-Fenton cathode. The AMEFS could be either two-electrode configuration that the microchannel-structured carbon connected with an additional bioanode by an external circuit, or single-electrode configuration that the microchannel-structured carbon served as both bioanode and cathode. Thanks to the microchannel structure of the carbon cathode, the AMEFS could be auto-driven by a process similar to the transpiration process of natural plants. The two-electrode AMEFS had higher degradation efficiency of acid orange 7 at lower external resistance, and achieved the highest degradation efficiency of 96% at the short-circuit condition. The single-electrode configuration simplified the setup of the AMEFS and possessed comparable performance with that of two-electrode configuration at short-circuit condition. Moreover, it could degrade high concentration acid orange 7 of up to 50 mg L-1 and achieve a high degradation efficiency of over 93%. The AMEFS could be applied for soil and sludge remediation by direct insertion of the microchannel structured carbon into contaminated body.

中文翻译:

蒸腾作用驱动的自动微生物电动芬顿系统,可降解酸性橙7。

微生物电芬顿系统(MEFS)显示了降解难降解污染物的潜在应用。为了简化MEFS并适应水,土壤或污泥修复等实际应用情况,我们开发了一种自动MEFS(AMEFS)来降解难降解染料酸性橙7。AMEFS包含微通道结构碳用氧化铁作装饰,作为电子芬顿阴极。AMEFS可以是微通道结构的碳通过外部电路与其他生物阳极连接的两电极配置,也可以是微通道结构的碳同时充当生物阳极和阴极的单电极配置。由于碳阴极的微通道结构,AMEFS可以通过类似于天然植物蒸腾过程的过程自动驱动。两电极AMEFS在较低的外部电阻下具有较高的酸性橙7降解效率,并且在短路条件下可实现96%的最高降解效率。在短路条件下,单电极配置简化了AMEFS的设置,并具有与两电极配置相当的性能。此外,它可以降解高达50 mg L-1的高浓度酸性橙7,并实现93%以上的高降解效率。通过将微通道结构碳直接插入污染体中,AMEFS可用于土壤和污泥修复。并在短路条件下实现了96%的最高降解效率。在短路条件下,单电极配置简化了AMEFS的设置,并具有与两电极配置相当的性能。此外,它可以降解高达50 mg L-1的高浓度酸性橙7,并实现93%以上的高降解效率。通过将微通道结构碳直接插入污染体中,AMEFS可用于土壤和污泥修复。并在短路条件下实现了96%的最高降解效率。在短路条件下,单电极配置简化了AMEFS的设置,并具有与两电极配置相当的性能。此外,它可以降解高达50 mg L-1的高浓度酸性橙7,并实现93%以上的高降解效率。通过将微通道结构碳直接插入污染体中,AMEFS可用于土壤和污泥修复。它可以降解高达50 mg L-1的高浓度酸性橙7,并实现93%以上的高降解效率。通过将微通道结构碳直接插入污染体中,AMEFS可用于土壤和污泥修复。它可以降解高达50 mg L-1的高浓度酸性橙7,并实现93%以上的高降解效率。通过将微通道结构碳直接插入污染体中,AMEFS可用于土壤和污泥修复。
更新日期:2020-04-06
down
wechat
bug