Synergistic biochar photocatalytic oxidation-adsorption for nitrite degradation

被引：0

作者：

Mao, Huakai ^{[1
]}

Yu, Yang ^{[1
]}

Zhang, Yue ^{[1
]}

Xia, Guangkun ^{[1
]}

Wu, Yuntao ^{[1
]}

Lou, Leyao ^{[1
]}

Niu, Wenjuan ^{[1
,2
,3
]}

Liu, Nian ^{[1
,2
,3
]}

机构：

[1] College of Engineering, Huazhong Agricultural University, Hubei, Wuhan

[2] Key Laboratory of Aquaculture Facilities Engineering, Ministry of Agriculture and Rural Affairs, Hubei, Wuhan

[3] Agricultural Equipment Laboratory of the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Hubei, Wuhan

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2024年 / 43卷 / 08期

关键词：

adsorption; aeration; biochar; nitrite; oxidation; photocatalysis;

D O I：

10.16085/j.issn.1000-6613.2023-1190

中图分类号：

学科分类号：

摘要：

The pattern of nitrite removal in different environments under the combined effect of biochar-light-oxygen was studied by orthogonal tests. Combining with multiple contrast tests, the differences in the effects of light, aeration and biochar addition on nitrite removal were analyzed, and the nitrosonitrogen migration pathways and degradation mechanisms were revealed. The results showed that removal efficiencies of nitrite were mainly influenced by environmental pH and temperature. The pH was the main controlling factor. The highest removal rate was 98.25% at 1.8mg/L nitrite concentration, 0.4g biochar addition, 25℃, 60min reaction time, and pH=2. Aeration normally facilitated the removal of nitrite. The removal rate could be increased at a maximum of 9.7 times compared to non-aerated treatment. Likewise, light promoted the removal of nitrite in strong acidic and alkaline environments, increasing the removal rate at most 5.7 times without light conditions. The addition of biochar brought a weak boost to nitrite removal and needs to be combined with light and aeration to achieve a better removal effect. The coexistence of the three conditions produced a synergistic effect of biochar photocatalytic oxidation-adsorption, which promoted the degradation and migration of nitrite nitrogen through oxidation, photocatalysis and adsorption to obtain a good removal effect. © 2024 Chemical Industry Press Co., Ltd.. All rights reserved.

引用

页码：4757 / 4765

页数：8

共 39 条

[11] LU Haiqiang, ZHAO Jianghong, LI Li, Et al., Selective oxidation of sacrificial ethanol over TiO2-based photocatalysts during water splitting, Energy & Environmental Science, 4, 9, pp. 3384-3388, (2011)
[12] YASUDA Masahide, MATSUMOTO Tomoko, YAMASHITA Toshiaki, Sacrificial hydrogen production over TiO2-based photocatalysts: Polyols, carboxylic acids, and saccharides, Renewable and Sustainable Energy Reviews, 81, pp. 1627-1635, (2018)
[13] TESTA Juan J, GRELA Maria A, LITTER Marta I., Heterogeneous photocatalytic reduction of chromium(Ⅵ) over TiO2 particles in the presence of oxalate: Involvement of Cr(Ⅴ) species, Environmental Science & Technology, 38, 5, pp. 1589-1594, (2004)
[14] CHEN Jie, XIAO Yuting, WANG Nan, Et al., Facile synthesis of a Z-scheme CeO2/C3N4 heterojunction with enhanced charge transfer for CO2 photoreduction, Science China Materials, 66, 8, pp. 3165-3175, (2023)
[15] LUO Jinhua, WU Yaohui, JIANG Mengzhu, Et al., Novel ZnFe2O4/BC/ ZnO photocatalyst for high-efficiency degradation of tetracycline under visible light irradiation, Chemosphere, 311, 1, (2023)
[16] XIA Qi, HUANG Binbin, YUAN Xingzhong, Et al., Modified stannous sulfide nanoparticles with metal-organic framework: Toward efficient and enhanced photocatalytic reduction of chromium (Ⅵ) under visible light[J], Journal of Colloid and Interface Science, 530, pp. 481-492, (2018)
[17] DJELLABI Ridha, YANG Bo, WANG Yan, Et al., Carbonaceous biomass-titania composites with TiOC bonding bridge for efficient photocatalytic reduction of Cr(Ⅵ) under narrow visible light, Chemical Engineering Journal, 366, pp. 172-180, (2019)
[18] NGO Dinh Ngoc Giao, CHUANG Xiangying, HUANG Chin-Pao, Et al., Compositional characterization of nine agricultural waste biochars: The relations between alkaline metals and cation exchange capacity with ammonium adsorption capability, Journal of Environmental Chemical Engineering, 11, 3, (2023)
[19] HUFF Matthew D, LEE James W., Biochar-surface oxygenation with hydrogen peroxide, Journal of Environmental Management, 165, pp. 17-21, (2016)
[20] LIU Yurong, PASKEVICIUS Mark, SOFIANOS M Veronica, Et al., A SAXS study of the pore structure evolution in biochar during gasification in H2O, CO2 and H2O/CO2, Fuel, 292, (2021)

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