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Engineering, Environmental
Shurun Yang, Yongli He, Zhechao Hua, Zhihui Xie, Chuan-Shu He, Zhaokun Xiong, Ye Du, Yang Liu, Guowei Xing, Jingyun Fang, Yang Mu, Bo Lai
Summary: This study reveals the potential risk of generating disinfection byproducts (DBPs) when treating iodine-containing wastewater with peracetic acid (PAA), especially under acidic conditions. The reaction rate is higher under acidic conditions, resulting in more iodinated aromatic products and higher toxicity towards bacteria. Under alkaline conditions, more adsorbable organic iodine (AOI) is generated.
Article
Biotechnology & Applied Microbiology
Abdisa Jabesa, Pallab Ghosh
Summary: This study investigated the removal of bisphenol-A (BPA) from water using ozone microbubbles (OMBs). The results showed that the removal efficiency of BPA significantly increased from 41% to 98% when the initial pH of the medium was adjusted from 3 to 7. By employing OMBs, a high ozone utilization efficiency was achieved, resulting in the complete removal of BPA.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Engineering, Environmental
Woongbae Lee, Sangki Choi, Hyunjin Kim, Woorim Lee, Minju Lee, Heejong Son, Changha Lee, Min Cho, Yunho Lee
Summary: This study assessed and compared the efficiencies of ozonation and ozone with hydrogen peroxide for the removal of organic micropollutants (OMPs), as well as the inactivation of bacteria and viruses, and the formation of bromate and biodegradable organics in municipal wastewater effluent. The results showed that ozonation effectively eliminated 39 OMPs, with 22 OMPs achieving a removal rate of 54 ± 14% at an ozone dosage of 0.5 gO(3)/gDOC. The concentration and exposure time of ozone were positively correlated with microbial inactivation levels, and O-3/H2O2 minimized bromate formation but decreased bacteria/virus inactivation. Ozonation also produced biodegradable organics, which could be removed through post-biodegradation treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Oriol Porcar-Santos, Alberto Cruz-Alcalde, Bernardi Bayarri, Carmen Sans
Summary: This study investigated the reactivity of BPF and BPS with ozone and hydroxyl radical, determined their second order rate constants, and analyzed the transformation products.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Hang Yu, Yu Tian, Shuyue Wang, Xin Ke, Rundong Li, Xiaohui Kang
Summary: This study investigated the oxidation mechanism of SANs by Fe(VI) using DFT, revealing that the primary oxidations of SANs follow the HAT mechanism, with the hydroxyl oxygen being more reactive than the carbonyl oxygen. Formation of SAN radicals is crucial, and substituents have a greater influence on the reaction than the position.
Article
Environmental Sciences
Hariprasad Pokkiladathu, Salman Farissi, Anbazhagi Sakkarai, Muthukumar Muthuchamy
Summary: Rampant water pollution events and rising water demand indicate an impending water crisis. Conventional wastewater treatment systems are unable to effectively remove contaminants, calling for new and efficient technologies. This study used ozonation and an activated carbon impregnated nanocomposite-bimetallic catalyst to achieve higher COD removal rates.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Youn-Jun Lee, Chang-Gu Lee, Seong-Jik Park, Joon-Kwan Moon, Pedro J. J. Alvarez
Summary: Combining UV and free chlorine is an efficient method for degrading recalcitrant organic compounds in water. This study found that chlorine monoxide was the main radical species responsible for the degradation of the neonicotinoid insecticide clothianidin, and the reaction rate constants indicated a faster degradation rate compared to other radical species. The presence of humic acid was found to inhibit the degradation process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Agriculture, Multidisciplinary
Shan Wang, Chen Li, Jiayi Wang, Zhaohui Wu, Bing Bai, Jinlong Tian, Zhaoxia Wu
Summary: Ozone water treatment is an effective technology for degrading pesticide residues in vegetables. The study found that washing pak choi with 2.0 mg L-1 ozone water for 30 min resulted in significant degradation of malathion and carbosulfan contents.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Environmental Sciences
Busra Sonmez Baghirzade, Ulku Yetis, Filiz B. Dilek
Summary: The study found that ozonation and photo-ozonation are effective methods for removing IMI from water, with photo-ozonation being more efficient. IMI is primarily degraded by OH center dot via an indirect mechanism.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Yujie Wang, Kang Hu, Zhiyu Yang, Chenlu Ye, Xin Li, Kai Yan
Summary: A porous ZnO photocatalyst was developed for efficient degradation of BPA, achieving 99% degradation in 1 hour under specific conditions. Various factors influencing the degradation performance were studied, and the main pathways of BPA degradation were proposed based on ten intermediates found in the process.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Engineering, Chemical
Yu-qiong Gao, Jin-qiang Zhou, Jia Zhang, Cong Li, Nai-yun Gao, Da-qiang Yin
Summary: The study investigates the effects of various factors on the degradation of PNT and its disinfection byproduct formation potentials by UV/PS treatment. Factors such as PS concentration, pH, HCO3-, NO3-, NO2-, and NOM were found to significantly affect PNT degradation. These factors also influence the formation of disinfection byproducts from chlorination following UV/PS pretreatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Itzany J. De la Cruz, S. Julia Liliana Rodriguez, Iliana Fuentes, Hugo Tiznado, Jorge L. Vazquez-Arce, Issis Romero-Ibarra, C. Jesus I. Guzman, Hugo Martinez Gutierrez
Summary: This study synthesized different crystalline phases of MnO2 and evaluated their catalytic activity in the ozonation of Bisphenol A. The results showed that gamma-MnO2 and delta 3-MnO2 exhibited the highest catalytic activity, which was attributed to their surface oxygen vacancy density and OH-group concentration.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Yu Lei, Xin Lei, Paul Westerhoff, Xingyu Tong, Jianing Ren, Yangjian Zhou, Shuangshuang Cheng, Gangfeng Ouyang, Xin Yang
Summary: Dissolved organic matter (DOM) plays a crucial role in scavenging bromine radicals, preventing the production of free bromine and subsequent brominated byproducts. The reaction rate constants between bromine radicals and DOM were determined to be comparable to those of hydroxyl radicals, with higher values for Br• compared to Br2•-. These reactions predominantly result in bromine release from DOM via electron transfer mechanism.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Honglong Zhang, Zhenyu Shi, Ruopeng Bai, Dingxiang Wang, Fuyi Cui, Jing Zhang, Timothy J. Strathmann
Summary: The study demonstrates that TEMPO, acting as an electron shuttle, significantly enhances the oxidation of organic contaminants by Mn(VII), especially for bisphenol A (BPA). Through a mechanism of rapid decomposition of TrOCs and self-regeneration, TEMPO accelerates the oxidation process by Mn(VII). In real waters, the Mn(VII)/TEMPO system shows promise for efficient removal of pollutants, with no adverse effects from ubiquitous cations/anions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Pengwei Yan, Zhonglin Chen, Shuyu Wang, Yanchi Zhou, Jimin Shen, Shengxin Zhao, Lei Yuan, Weiqiang Wang, Xiaotong Xu, Xinwei Zhu, Jing Kang
Summary: This study investigated the generation mechanism of iodinated by-products during catalytic ozonation of iohexol, and evaluated the impact of various factors on their generation. The concentrations of iodinated by-products in actual water were relatively low, and the species with one iodide atom had significantly higher generation concentrations than those with more iodine atoms.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Saltuk Pirgalioglu, Tulay A. Ozbelge, H. Onder Ozbelge, Niyazi Bicak
CHEMICAL ENGINEERING JOURNAL
(2015)
Article
Engineering, Environmental
Abdelrouf A. G. Abdw, Sifa Dogan, Saltuk Pirgalioglu
OZONE-SCIENCE & ENGINEERING
(2018)
Article
Chemistry, Physical
Saltuk Pirgalioglu, Tuelay A. Ozbelge
APPLIED CATALYSIS A-GENERAL
(2009)
Article
Engineering, Chemical
Okunbo Ayodeji Andrew, Saltuk Pirgalioglu, Sifa Dogan
DESALINATION AND WATER TREATMENT
(2020)