Article
Engineering, Environmental
Tianxin Zhu, Jing Deng, Shijun Zhu, Anhong Cai, Cheng Ye, Xiao Ling, Hongguang Guo, Qiongfang Wang, Xueyan Li
Summary: The study found that UV/chlorine treatment can effectively degrade VEN, with the addition of chlorine and increase in solution pH facilitating VEN removal. HCO3-, Cl-, and HA were found to inhibit VEN degradation during UV/chlorine treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Tao Yang, Jiamin Mai, Sisi Wu, Chunping Liu, Liuyan Tang, Zongwen Mo, Mengchen Zhang, Lin Guo, Minchao Liu, Jun Ma
Summary: The study demonstrated that the degradation of Benzothiazole and Benzotriazole by UV/chlorine involved various reactive species and radicals, with different dominant mechanisms depending on the pH conditions. The efficiency of degradation was significantly influenced by pH values. Seven disinfection by-products were identified during the degradation process, with trichloromethane being the main by-product. The toxicity assessment revealed that detoxification of BZA could be achieved by UV/chlorine, while the toxicity of BTZ was increased due to the formation of intermediates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Guo-Qiang Li, Zheng-Yang Huo, Qian-Yuan Wu, Zhuo Chen, Yin-Hu Wu, Yun Lu, Hong-Ying Hu
Summary: Recently, UV-LEDs and chlorine combined system has been used as an emerging advanced oxidation process, with investigations on the quantum yields of chlorine photolysis using polychromatic UV sources. Different trends in radical species productions were observed in 265 nm and 280 nm LED UV/chlorine systems as pH varied from 5.0 to 10.0.
Article
Engineering, Chemical
Wei Luo, Lin Deng, Jun Hu, Bohui Xu, Chaoqun Tan
Summary: This study investigated the degradation of DMZ and the formation of HNMs during the UV/chlorine process. The results showed that UV/chlorine process can efficiently degrade DMZ, but the formation of HNMs should be considered.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Zhen-Shuen Choo, Ming-Chi Hsieh, Hank Hui-Hsiang Lin, Jheng-Sian Yang, Angela Yu-Chen Lin
Summary: This study investigates the enhanced degradation of BT and 5-MeBT during the sunlight/free chlorine process. The results show that sunlight/free chlorine treatment can enhance the degradation of BT and 5-MeBT, especially under alkaline conditions. The enhanced removal is attributed to the generation of HO • and reactive chlorine species (RCSs).
Article
Engineering, Environmental
Haoran Yin, Qizhan Zhang, Yi Su, Yunping Tang, Minghua Zhou
Summary: This study introduced a novel UV based advanced oxidation process with electrochemical co-generation of chlorine and H2O2 (UV/E-Cl&H2O2) for the degradation of carbamazepine (CBZ) with remarkable efficiency and lower energy consumption compared to traditional processes. The generated radicals, especially center dot OH, played a major role in CBZ removal. The process also showed promising perspectives in removing a variety of pollutants and treating real wastewater.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Abdallatif Satti Abdalrhman, Chengjin Wang, Zuo Tong How, Mohamed Gamal El-Din
Summary: The study found that the ideal condition for degrading CHA using the UV/Chlorine process is to continuously add chlorine at a constant rate to reduce chlorine consumption and minimize the radical scavenging effect, resulting in a higher removal rate.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Wei Zhang, Nan Li, Caiwen Wang, Guangchao Li, Julong Sun, Shumin Zhu
Summary: In this study, the solar/chlorine process effectively degraded the persistent organic herbicide Diuron. HO, RCS, and O-3 were found to be the major contributors to Diuron degradation at different solution pH values. Natural organic matter, NO2-, and high doses of Cl-, NO3-, and HCO3- were found to inhibit the efficiency of Diuron degradation. The study also proposed a possible degradation pathway for Diuron and highlighted the risk of N-nitrosodimethylamine (NDMA) production in the presence of NO2-. Furthermore, the calculated results from the ECOSAR program showed an overall reduction in the ecotoxicity of Diuron and its oxidation byproducts, although the toxicity of the products remained high.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Yanan Shao, Xiaodong Li, Longbo Jiang, Xue Wei, Yanlan Zhao, Xuwu Chen, Shuai Li
Summary: UV/chlorine, as an advanced oxidation process, has been widely used for contaminant treatment. Current research has mainly focused on drinking water and sewage treatment. This study investigated the degradation of ciprofloxacin in hospital urine components by UV/chlorine treatment. The results showed that characteristic ions and iodine ions in the urine can inhibit the degradation of ciprofloxacin. Three degradation pathways were proposed based on the main transformation products, and preliminary toxicity analysis suggested higher toxicity in hospital hydrolyzed urine containing iodine.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Yu Zhang, Jun Cui, Yuansheng Pei
Summary: This study proposed a photoelectrochemical system using a WO3/BiVO4-CoBi photoanode and Cl- in highly-saline wastewater to generate strongly-oxidizing active chlorine species. It achieved simultaneous removal of NH4+-N and COD with high efficiency and stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Haipei Wang, Bing Wang, Yi Peng, John C. C. Crittenden, Haifeng Pan, Lixin Wang
Summary: This study proposed an improved residual chlorine decay model in the UV/Cl-2 process and confirmed the optimal residual chlorine concentration, UV dose, and hydraulic retention time in the pipe network. Additionally, an additional decay model was established by UV irradiation, and the calibration results indicated the accuracy of the model.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yi-Hung Liu, Hsin-Fu Chen, Yen-Shen Kuo, Chih-Ta Wang
Summary: An electrochemically assisted UV/chlorine reaction system was proposed to effectively degrade salicylic acid (SA) pollutant. The system is technically and chemically simple, allowing easy treatment of SA-containing wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Jinxin Lu, Jiaqi Li, Jianye Xu, Huili Tang, Zhen Lv, Erdeng Du, Liping Wang, Mingguo Peng
Summary: The study successfully degraded norfloxacin using the UV/chlorine process, with chlorine dose and UV intensity positively impacting the degradation process, while ammonia had a negative effect. Molecular structure analysis identified the N6 or N5 atoms in the piperazine ring as the most reactive sites during degradation.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
Kaiheng Guo, Zihao Wu, Chunyan Chen, Jingyun Fang
Summary: Due to the worsened global water quality, the presence of chemical and microbial contaminants in water raises serious concerns for human health. Therefore, it is crucial to identify and develop effective and environmentally friendly water treatment technologies to obtain clean water. This article focuses on the radical chemistry of UV/chlorine, an emerging advanced oxidation process (AOP), and its role in the abatement of contaminants.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Physical
Qingsong Li, Chengran Lai, Jianwei Yu, Jingyu Luo, Jing Deng, Guoxin Li, Weizhu Chen, Boqiang Li, Guoyuan Chen
Summary: The study found that the UV/chlorine process can effectively remove DS from water, and the degradation of DS is influenced by factors such as chlorine dosage and solution pH. Increasing free chlorine dosage leads to the generation of more active species like NaClO and hydroxyl radicals, increasing their contribution to the degradation process.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)