Article
Multidisciplinary Sciences
Qindan Zhu, Joshua L. Laughner, Ronald C. Cohen
Summary: The hydroxyl radical (OH) is the most important oxidant on a global and local scale, controlling the removal rate of primary pollutants and triggering the production of ozone. The interannual trends of OH in North American cities show significant variation, with some cities experiencing an increase while others experience a decrease. The variation of OH is linked to the decline of NO2, emphasizing the importance of controlling NOx emissions in regulating ozone pollution in these cities.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Review
Environmental Sciences
Yuan-zhen Liu, Rui-tang Guo, Chao-peng Duan, Gui-lin Wu, Yu-fang Miao, Jing-wen Gu, Wei-guo Pan
Summary: Three-dimensionally ordered macroporous (3DOM)-based catalysts are promising for controlling gaseous pollutants emissions due to their high porosity, large surface area, pore volume, and excellent mass transfer capability. Recent studies have summarized the preparation and applications of 3DOM catalysts, along with introducing their advantages and mechanisms in gaseous pollutants control. Future perspectives and directions for 3DOM-based catalysts in gaseous pollutants control have also been proposed.
Article
Environmental Sciences
Zeeshan Ajmal, Mahmood ul Haq, Yassine Naciri, Ridha Djellabi, Noor Hassan, Shahid Zamanh, Adil Murtaza, Anuj Kumarj, Abdullah G. Al-Sehemi, Hamed Algarni, Omar A. Al-Hartomy, R. Dong, Asif Hayat, Abdul Qadeer
Summary: According to a survey by the World Health Organization (WHO), air pollution has become the leading cause of death for 7 million people worldwide. Strategies are being implemented to reduce pollutant emissions and promote the use of sustainable green technologies. Photocatalysis technology, especially the combination of conjugated polymers (CPs) and inorganic semiconductors, has shown promise in removing air pollutants. This review evaluates the contribution and potential of CPs as novel photocatalysts in reducing CO2, NOX, and VOCs, and highlights the synergistic effects achieved when CPs are combined with inorganic semiconductors.
Review
Engineering, Environmental
He Guo, Shijia Pan, Zhixuan Hu, Yawen Wang, Wenxuan Jiang, Yexiang Yang, Yongchun Wang, Jiangang Han, Yifeng Wu, Tiecheng Wang
Summary: Organic pollutants in water pose severe threats to human health and the ecological environment. Non-thermal plasma technology, as an advanced oxidation technology, has gained extensive attention for its ability to efficiently remove refractory organic pollutants in water. The low energy utilization has hindered its development, but plasma coupling catalysis has emerged as a solution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yixin Huang, Jing Zou, Jinbin Lin, Haoyu Yang, Mengyun Wang, Jiawen Li, Wei Cao, Baoling Yuan, Jun Ma
Summary: This study discovers that 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) can serve as both an activator and an electron shuttle to enhance the activation of peroxydisulfate (PDS) and enhance the degradation of diclofenac (DCF). The PDS/ABTS system generates multiple reactive species, with ABTS(center dot+) and (OH)-O-center dot directly contributing to the degradation of DCF. The PDS/ABTS system shows good anti-interference capacity and further improved performance can be achieved by encapsulating ABTS into cellulose.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Zixuan Zhao, Yunhe Li, Yuerong Zhou, Yilong Hou, Zhengyi Sun, Wenhao Wang, Jianfeng Gou, Xiuwen Cheng
Summary: In recent years, sulfite (S(IV)) has been used as an alternative to persulfates to remove antibiotics in wastewater. However, there is a need for a cheap, environmentally friendly, and effective catalyst. This study used a micron-scale iron-carbon composite (mZVI@C-800) coupled with S(IV) to degrade metronidazole (MNZ). The results showed that the MNZ removal rate reached 81.5% under optimized reaction conditions. The introduction of carbon enhanced the corrosion of mZVI, releasing more Fe2+ and improving the efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Anaelle Gabet, Helene Metivier, Christine de Brauer, Gilles Mailhot, Marcello Brigante
Summary: UVB radiation is more efficient in generating radicals, while the persulfate system shows higher efficiency in oxidant precursors. The Yeast Estrogen Screen assay is used to track estrogen degradation and ensure removal of estrogenic activity.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Boyin Yan, DongChuan Xu, Zhiquan Liu, Jiangzhou Tang, Rui Huang, Min Zhang, Fuyi Cui, Wenxin Shi, Chun Hu
Summary: The degradation of BMAA in the UV254/persulfate system follows a pseudofirst-order kinetic model, with SO4· identified as the major radical contributing to the degradation. The pH significantly affects the degradation rate, with the highest rate achieved at pH 8. However, the presence of water matrix components inhibits the degradation process.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Xuelei Yan, Qingzhu Li, Xiaowei Huang, Kaizhong Li, Bensheng Li, Shengtu Li, Yeqiu Zhao, Qingwei Wang, Hui Liu
Summary: By developing oxygen-enriched amorphous iron manganese oxide (AFMBO), the effective control of gaseous arsenic in non-ferrous smelting flue gas has been achieved, with high adsorption capacity and magnetic separation properties.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Mengchang Zhou, Changsong Zhou, Dong Chen, Hao Wu, Zhen Zhang, Hongmin Yang, Wei Ruan, Yaming Zhou, Zengqiang Tan
Summary: Novel manganese decorated UIO-66 catalysts (Mn/UIO-66) were prepared and applied to the vaporized hydrogen peroxide system for toluene removal, achieving an 82% removal efficiency. The catalytic performance was found to be correlated with the yield of hydroxyl radical and the catalyst specific surface area.
Article
Engineering, Environmental
Kefeng Shang, Rino Morent, Ning Wang, Yongxin Wang, Bangfa Peng, Nan Jiang, Na Lu, Jie Li
Summary: The study shows that persulfate can enhance the degradation of sulfamethoxazole in a water falling film dielectric barrier discharge plasma reactor, with PMS performing better than PDS. Increasing the applied voltage, solution pH, and PMS/PDS concentration promotes SMX degradation. The reactive species generated from the activation of PMS/PDS by discharge plasma play a key role in SMX degradation, with center dot OH and SO4 center dot- being particularly important.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Xin Zhang, Zhenhai Wu, Zhen He, Xuefen Zhong, Fang Bi, Yunfeng Li, Rui Gao, Hong Li, Wenxing Wang
Summary: This study investigated the concentration and sensitivities of carbonyls in urban areas of nine cities in Fujian Province, China, and analyzed their contributions to ozone concentration. The study found that formaldehyde, acetone, and acetaldehyde were the dominant carbonyl species, primarily originating from photochemical reactions and vehicle emissions. The study also revealed that carbonyl species contributed significantly to ozone formation potential, highlighting the need for stricter control measures.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Huiling Xia, Chengwei Li, Guoying Yang, Zhiang Shi, Chenxi Jin, Wenzhi He, Jingcheng Xu, Guangming Li
Summary: This paper provides a detailed classification and comprehensive review of microwave-assisted advanced oxidation processes (MW-AOPs) in wastewater treatment. The latest applications of microwave in different advanced oxidation systems are discussed, along with the discussion of reaction parameters, performance, and operating costs of MW-AOPs. Recommendations for future research on MW-AOPs are also provided, highlighting the potential development and evolution of this technology.
Article
Energy & Fuels
Ying Li, Yan Wang, Yangxian Liu, Yongchun Zhao
Summary: In this study, hydroxyl radicals (•OH) generated by the photochemical advanced oxidation process are used to modify different carbon-based materials to enhance their ability to adsorb gaseous Hg0. The modified materials show significantly improved Hg0 removal efficiency compared to samples modified with UV or H2O2 alone. Chemically adsorbed oxygen (O*) and C-O functional groups play a crucial role in the adsorption process.
Article
Environmental Sciences
Taikang Yuan, Xudong Wang, Xiaochen Zhao, Tingting Liu, Hongmin Zhang, Yongtao Lv, Lei Wang
Summary: The study investigated and compared the degradation of minocycline in aqueous solution using natural bornite-activated hydrogen peroxide (H2O2) and persulfate processes (PS). The results showed that the mineralization rate of NBo/PS was higher than that of NBo/H2O2, and the main activated species differed between the two systems. Reusability of NBo as activator for MNC degradation was also proven to be cost-effective and stable. This work provides a new perspective on the degradation mechanism of pollutants by Fe-Cu bimetallic sulfide activation of PS and H2O2.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)