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
Abdisa Jabesa, Pallab Ghosh
Summary: Ozone-based microbubble technology demonstrated higher efficiency in oxidizing DMSO compared to conventional ozone millibubbles, with further improvement achieved by coupling with H2O2. While the generation of center dot OH from a certain amount of H2O2 had a positive effect, an excessive dosage had a negative impact. The TOC removal efficiency of ozone microbubbles was significantly better than that of ozone millibubbles.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Kunling Han, Chengbin Yin, Yan Zhao
Summary: The chemical degradation processes of diethyl phthalate (DEP) induced by HO· and SO4·- in water were theoretically studied. The results showed that H abstraction reactions were the most favorable pathways for the degradation reactions of DEP. HO· exhibited higher reactivity towards DEP compared to SO4·-.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Kunling Han, Chengbin Yin, Yan Zhao
Summary: In this study, the chemical degradation processes of diethyl phthalate (DEP) induced by HO· and SO4·- were investigated in aqueous solution. The results showed that the H abstraction occurring in aliphatic side chains was the most favorable pathway for all HO·/SO4·--initiated degradation reactions of DEP. The rate constants for DEP degradation reactions induced by HO· and SO4·- were 2.34 x 10(9) and 1.24 x 10(8) M-1 s(-1), respectively, at 298 K. HO· exhibited higher reactivity toward DEP compared to SO4·-. DEP and its products showed no bioaccumulation potential but most of them were developmentally toxic, except for (Z)-ethyl-2,5-dioxopent-3-enoate. Moreover, (Z)-ethyl-2,5-dioxopent-3-enoate was acutely toxic to fish and phthalic acid was mutagenicity positive. These findings highlight the importance of further research in this area.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Engineering, Environmental
Yunhui Zhang, Yun Wang, Yong Li, Zuxin Xu, Huaizheng Li, Wei Jin
Summary: Dissolved effluent organic matter (EfOM) is crucial for the ozonation decomposition and hydroxyl radical (& BULL;OH) scavenging in the degradation of trace organic contaminants (TrOCs) in municipal secondary effluents. This study isolated EfOM into six fractions to understand their reaction kinetics and roles in & BULL;OH chain reactions. The results showed that hydrophilic fractions (HiF) had higher reaction rate constants (kEfOM-& BULL;OH) than hydrophobic fractions (HoF), with hydrophilic base (HiB) being the most important fraction in ozone decomposition and & BULL;OH reaction.
Article
Environmental Sciences
Ning Min, Jun Yao, Meseret Amde, Hao Li, Wancheng Pang, Junjie Zhu, Ying Cao, Hans Hermann Richnow
Summary: Compound-specific isotope analysis (CSIA) was used to investigate the degradation mechanism of nano titanium dioxide (TiO2) in the photodegradation of diethyl phthalate (DEP). The study revealed that the degradation of DEP follows first-order kinetics, with a higher degradation rate at neutral conditions. The 13C and 2H isotope fractionation indicated that the addition of & BULL;OH on the benzene ring of DEP is the main conversion pathway. Additionally, hydroxyl radicals were identified as the dominant radical species in the studied systems.
Article
Chemistry, Physical
Yang Guo, Yixin Zhang, Gang Yu, Yujue Wang
Summary: By comparing the conventional scavenger approach with the proposed probe approach, this study found that using probes can accurately reveal catalytic ozonation mechanisms and provide an effective way to assess the contribution of various ROS to pollutant abatement.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Yang Guo, Juhong Zhan, Gang Yu, Yujue Wang
Summary: During ozonation, the concentrations ratios of hydroxyl radicals, superoxide radicals and ozone remain constant, indicating the potential non-negligible role of superoxide radicals in the degradation of certain micropollutants with similar or higher reactivity compared to hydroxyl radicals. The proposed chemical kinetic model accurately simulates the abatement efficiencies of ozone-resistant micropollutants by considering the contribution of superoxide radicals, providing a valuable tool for predicting micropollutant removal during ozonation.
Article
Environmental Sciences
Xiaobin Liao, Linlu Shen, Zhibin Jiang, Menglan Gao, Yu Qiu, Huan Qi, Chao Chen
Summary: This study revealed that metformin can directly form NDMA during ozonation, with the addition of ·OH scavenger enhancing its formation significantly. The impacts of bromide and HCO3- on NDMA formation by O3 and ·OH were different, the increase in pH promoted NDMA production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Chemical
Albert Sales-Alba, Alberto Cruz-Alcalde, Nuria Lopez-Vinent, Lucas Cruz, Carme Sans
Summary: This study assesses the reaction kinetics, degradation mechanisms, and associated toxicity of the neonicotinoid insecticide clothianidin (CLO) during ozone-based oxidation in water. The results indicate that the degradation is mainly attributed to indirect mechanisms rather than direct degradation pathways. The presence of dissolved organic carbon (DOC) in water matrices hinders the achievement of high CLO removal, while carbonate alkalinity has a minimal effect on the process efficiency. The study also identifies the major transformation products of CLO and reveals their decreased toxicity compared to the parent compound. These findings suggest that ozonation is a suitable technology for the abatement of CLO and its associated toxicity in aqueous matrices.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Alexander John, Irene Carra, Bruce Jefferson, Monika Jodkowska, Adam Brookes, Peter Jarvis
Summary: The application of microbubbles in water treatment has shown to enhance gas-liquid contacting processes and compound removal compared to conventional bubbling techniques. However, this study found that there was no significant difference in hydroxyl radical generation between microbubble and conventional bubble ozonation systems.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yang Guo, Gang Yu, Urs von Gunten, Yujue Wang
Summary: Superoxide radicals (O-2(center dot-)) are important chain carriers in the radical chain reaction during ozonation, promoting the decomposition of ozone (O-3) to hydroxyl radicals ((OH)-O-center dot). This study used a probe compound and kinetic modeling to evaluate the role of O-2(center dot-) for O-3 decomposition during ozonation of synthetic solutions and natural waters. The results showed that O-2(center dot-) plays a critical role in promoting O-3 decomposition, with its contribution ranging from 45-70% depending on water composition.
Article
Engineering, Chemical
Min Huang, Changyin Zhu, Fengxiao Zhu, Guodong Fang, Dongmei Zhou
Summary: This study demonstrates that the addition of oxalic acid can significantly enhance the degradation efficiency of DEP in VO2-Fenton-like reactions, promoting the formation of reactive species such as center ·OH and thus facilitating pollutant degradation. Addition of reducing agents plays a crucial role in enhancing Fenton-like reactions for pollutant degradation and environmental remediation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Lianxue Wei, Kangxin Wen, Jinfeng Lu, Jun Ma
Summary: Catalytic ozonation using two different synthesized catalysts, alpha-FeOOH and CeO2, was conducted on real filtered water, showing that CeO2 was more effective in removing low molecular weight compounds and refractory compounds, while alpha-FeOOH generated higher concentrations of carboxylic acids.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Klara Rusevova Crincoli, Scott G. Huling
Summary: For the first time, the fate of radicals in heterogeneous chemical oxidation treatment systems was studied, with UV-AHP and UV-APS generating center dot OH and SO4 center dot- radicals that impact treatment efficiency. The higher scavenging rates of center dot OH by alumina and aqueous/solid phase constituents, compared to SO4 center dot-, contributed to lower treatment efficiency in the UV-AHP system. The cost assessment based on overall treatment efficiency showed higher specific cost for treating the probe compound with UV-AHP due to its lower treatment efficiency compared to UV-APS.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Abdisa Jabesa, Pallab Ghosh
ENVIRONMENTAL TECHNOLOGY
(2017)
Article
Engineering, Environmental
Abdisa Jabesa, Pallab Ghosh
Summary: Ozone-based microbubble technology demonstrated higher efficiency in oxidizing DMSO compared to conventional ozone millibubbles, with further improvement achieved by coupling with H2O2. While the generation of center dot OH from a certain amount of H2O2 had a positive effect, an excessive dosage had a negative impact. The TOC removal efficiency of ozone microbubbles was significantly better than that of ozone millibubbles.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
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)
Review
Environmental Sciences
Mani Jayakumar, Gadissa Tokuma Gindaba, Kaleab Bizuneh Gebeyehu, Selvakumar Periyasamy, Abdisa Jabesa, Gurunathan Baskar, Beula Isabel John, Arivalagan Pugazhendhi
Summary: Bioenergy is gaining popularity as a renewable energy source, offering potential solutions to rising energy costs and providing income opportunities for disadvantaged farmers and rural populations worldwide. Bioethanol derived from agricultural residual-biomass presents unique environmental, socioeconomic, and strategic benefits, serving as a safe and cleaner alternative to traditional fossil fuels. Significant progress has been made towards efficient fuel ethanol production from agricultural lignocellulosic materials (ALCM), utilizing pretreatment, enzymes, and fermentation techniques. The review also discusses the state of ALCM-based bioethanol production methods, facilitating proper utilization of agricultural leftovers.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Elizabeth Alvarez-Chavez, Stephane Godbout, Mylene Genereux, Caroline Cote, Alain N. Rousseau, Sebastien Fournel
Summary: This study evaluated the effect of alternative filtering materials and bed aeration on the retention of nutrients and fecal bacteria in woodchip bedded stand-off pads for cows. The results showed that the alternative biofilters were more efficient in removing COD, SS, TN, and NO3-N, while conventional biofilters were more efficient for PO4-P removal. Aeration did not have a significant effect under the tested temperature conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
Summary: This study investigates the application of oxygen enrichment melting technology in the melting of municipal solid waste incineration fly ash. The results demonstrate that oxygen enrichment technology can reduce energy consumption and operating costs, as well as decrease pollution emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Liangang Xiao, Mingkai Leng, Philip Greenwood, Rongqin Zhao, Zhixiang Xie, Zengtao You, Junguo Liu
Summary: This study investigates the effects of grazing exclusion on soil organic carbon (SOC) accumulation and vegetation recovery. It finds that grazing exclusion can increase the potential for SOC accumulation, and higher annual precipitation is positively correlated with SOC accumulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Beatrice Cantoni, Jessica Ianes, Beatrice Bertolo, Selena Ziccardi, Francesco Maffini, Manuela Antonelli
Summary: This study evaluates the performance of ozonation and adsorption as in-series processes compared to standalone processes for the removal of Contaminants of Emerging Concern (CECs) in drinking water. The combination of both processes proves to be more effective than adsorption and ozonation alone. Ozonation improves the adsorption performance of poorly-oxidizable CECs but worsens that of well-oxidizable compounds. This research highlights the importance of considering both processes in the removal of CECs in drinking water treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Dan Li, Bingjun Liu, Yang Lu, Jianyu Fu
Summary: A new Standardized compound Drought and Saltwater intrusion Index (SDSI) was developed to detect changes in the severity of CDSEs in six estuaries. The study found that saltwater intrusion plays a dominant role in influencing SDSI severity, and CDSEs vary in frequency, duration and severity among different estuaries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yong-Qiang Li, Rui Sun, Chong-Miao Zhang, Zi-Xuan Liu, Rui-tao Chen, Jian Zhao, Hua-dong Gu, Huan-Cai Yin
Summary: In this study, an electron beam excitation multi-wavelength ultraviolet (EBE-MW-UV) system was established and found to have significantly higher microbial inactivation effects compared to single-wavelength UV-LEDs in water. Mechanism analysis revealed that EBE-MW-UV damaged microbial DNA and proteins, and generated additional reactive oxygen species, leading to microbial inactivation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Kaili Ma, Xinxin Han, Qiujuan Li, Yu Kong, Qiaoli Liu, Xu Yan, Yahong Luo, Xiaopin Li, Huiyang Wen, Zhiguo Cao
Summary: This study reveals that the use of a tryptophan-degrading microbial consortium (TDC) can enhance the hydrolysis efficiency of waste activated sludge (WAS), increasing the yield and quality of short chain fatty acids (SCFAs) and improving the solubilization and release of organic substances from WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Ling Xiong, Rui Li
Summary: Incorporating Ecosystem Service Value (ESV) into land use planning can provide informed land management decisions. This study evaluates the ESV of Guizhou Province in China's karst region. The results show an increase in total ESV over the past two decades due to ecological restoration projects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
M. Geetha Jenifel
Summary: This article discusses the importance of water and the pollution of freshwater resources, and introduces the use of machine learning models and blockchain technology to predict and protect water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Stanslaus Terengia Materu, Taotao Chen, Chang Liu, Daocai Chi, Meng Jun
Summary: The study showed that H2SO4-modified biochar can reduce P leaching, increase soil available P, and enhance plant P uptake in alternate wetting and drying irrigation systems. Biochar additions B20A and IAWDB20A-M were effective in improving yield, reducing P leaching, and increasing APB.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Amir Nouri, Ali Akbar Zinatizadeh, Sirus Zinadini, Mark Van Loosdrecht
Summary: This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime to enhance nitrogen removal from synthetic wastewater. The effect of temperature, hydraulic retention time (HRT), N -NH+4 /TN ratio, and current density on the reactor performance was investigated, and the ALBER achieved a maximum TN removal of 73%. The results suggest that the ALBER has potential for treating industrial wastewater at low temperatures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Peifang Wang, Guoxiang You, Yang Gao, Juan Chen, Xun Wang, Chao Wang
Summary: This study investigated the ecological processes of microbial communities and N- and P-transformation processes in multistage agricultural drainage ditches. The results showed that the microbial communities were co-shaped by agricultural practices and ditch size, which further governed the N and P removal performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yuqing Tan, Qiming Cheng, Fengwei Lyu, Fei Liu, Linhao Liu, Yihong Su, Shaochun Yuan, Wenyu Xiao, Zhen Liu, Yao Chen
Summary: The exacerbation of global warming, extreme weather events, and rapid urbanization have led to increased flooding in urban areas. China has adopted sponge city as an efficient means of preventing and controlling urban floods. Using a SWMM-FVCOM model, the hydrological reduction and control effect of sponge city construction (SPCC) within a university campus were evaluated. The study found that implementing SPCC effectively mitigates surface runoff and reduces the severity of urban flooding. However, the efficacy of runoff control decreases with longer rainfall return periods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Zhonghan Chen, Qiuyan Li, Shibo Yan, Juan Xu, Qiaoyun Lin, Zhuangming Zhao, Ziying He
Summary: Tidal rivers are important biochemical reaction channels, receiving carbon from wastewater and agricultural drains, affecting CO2 emissions. Through modeling and data analysis, researchers explored carbon distribution, emissions, and greenhouse effects, emphasizing the potential of river management to change global CO2 emissions under climate change.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
