1
|
Sun Z, Zhou J, Zhang H, Liu Z, Tao S, Xu J. Enhanced photodegradation of p-arsanilic acid by oxalate in goethite heterogeneous system under UVA irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:36207-36216. [PMID: 37594713 DOI: 10.1007/s11356-023-29289-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 08/08/2023] [Indexed: 08/19/2023]
Abstract
The widespread used organoarsenicals have drawn attention for decades due to their potential environment risks. In this study, a heterogeneous system of goethite/oxalate irradiated using UVA light (λ = 365 nm) was applied for the removal of ASA, a kind of organoarsenicals used in animal feeding operations as additives, from the aqueous phase through photodegradation. Results showed that the presence of 5 mM of oxalate significantly enhanced the photodegradation efficiency of ASA in the 0.1 g/L of goethite suspended system from 28 to ~100% within 180 min reaction at pH 5. Acid conditions favored the photoreaction rate, compared with neutral and basic conditions. This reaction process was also influenced by the initial concentration of oxalate and ASA. Furthermore, the mechanism study was conducted by quenching experiments and revealed the important roles of ·OH in the degradation of ASA in the goethite/oxalate/UVA system. By analyzing the reaction products, both inorganic arsenic (As(III) and As(V)) and ammonia were detected during the photodegradation of ASA. These findings help to gain a better understanding of the geochemical behavior of ASA in surface water and can also provide a potential treatment method for the organoarsenicals contaminated water.
Collapse
Affiliation(s)
- Zuyou Sun
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Jiali Zhou
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Hui Zhang
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Zufan Liu
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Shiyong Tao
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Jing Xu
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China.
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China.
| |
Collapse
|
2
|
Xu T, Chen T, Chen Z, Cao Y, Xing Y, Gui X. Oxalate enhanced aniline degradation by goethite: Structural dependent activity, hydroxyl radicals generation and toxicity evaluation. CHEMOSPHERE 2023; 339:139790. [PMID: 37572712 DOI: 10.1016/j.chemosphere.2023.139790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/05/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
A photochemical system combining iron (hydr)oxides and oxalate (Ox) shows application prospects in wastewater treatment due to the abundance of reactive oxygen species (ROS) generation. Nevertheless, it is a challenge to the investigate photochemical activity of iron (hydr)oxides/Ox systems with varying structural properties. Herein, the photochemical behaviors of Ox on goethite (Gt) surface from the view of structural dependent activity, containment degradation, and ROS generation were explored in detail. Results confirmed that bidentate mononuclear was formed on Gt surface after complexing Ox. Combined with density functional theory calculation and pH time evolution during aniline degradation, the photochemical activity of the Gt/Ox system fell in between that of ferrihydrite/Ox and hematite/Ox systems. After irradiating 120 min visible light, 96.5% aniline was degraded by 1.0 mM Ox and 0.2 g/L Gt. The amount of •OH in vis/Gt/Ox system could be up to 309.3 μM and its generation was closely associated with Fe(II) while slightly affected by the generated H2O2. Moreover, as revealed by high-performance liquid chromatography with mass spectrometric and Ecological Structure Activity Relationships software, the toxicity of the intermediates of aniline degradation in the vis/Gt/Ox system towards fish and green algae increased first but then declined accompanied by the generation of non-toxic ring-opening products at the end of reaction. According to the findings in the presented study, it could be concluded that vis/Gt/Ox is a promising approach to wiping out aniline wastewater.
Collapse
Affiliation(s)
- Tianyuan Xu
- School of Resource and Geosciences, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China.
| | - Ting Chen
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China; School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Zhenhua Chen
- School of Resource and Geosciences, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Yijun Cao
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Yaowen Xing
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Xiahui Gui
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| |
Collapse
|
3
|
Zhang W, Liang J, Yuan L, Li R, Shi L, Zhengyang E, Song J, Dong Y, Li P, Fan Q. Photocatalytic oxidation pathways of arsenite on spontaneously forming FeOOH/GO heterostructure. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
4
|
Wang Y, Gong X, Dong X, Tao X, Luo Y. Arsenite photo-oxidation and removal by ferrihydrite in the presence of oxalate: a pH dependence and surface-mediated process. NEW J CHEM 2022. [DOI: 10.1039/d1nj05219e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As(iii) is removed via a surface-mediated process in a ferrihydrite/oxalate system, and the sources of HO˙ depend strongly on pH.
Collapse
Affiliation(s)
- Yajie Wang
- School of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 50025, China
| | - Xianhe Gong
- School of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 50025, China
| | - Xin Dong
- School of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 50025, China
| | - Xiuzhen Tao
- School of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 50025, China
| | - Yingchun Luo
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| |
Collapse
|