Article
Environmental Sciences
Yi-na Tu, Chen Li, Fengli Shi, Yingjie Li, Zhiyu Zhang, Huaying Liu, Senlin Tian
Summary: This study investigates the photochemical behavior of dissolved black carbon (DBC) in the presence of metal ion Cu2+ and its impact on the photodegradation of organic micropollutants. The presence of Cu2+ reduces the photodegradation rate of sulfadiazine but enhances the rate of carbamazepine. The formation of Cu(II)-DBC complex leads to a decrease in the concentration of excited-triplet DBC*, resulting in a lower photodegradation rate of sulfadiazine. Cu2+ complexation also enhances the electron transfer ability, leading to the production of more .OH species and promoting the photodegradation of carbamazepine.
Article
Engineering, Environmental
Zhongyu Guo, Jieqiong Wang, Xi Chen, Feifei Cui, Tingting Wang, Chengzhi Zhou, Guobao Song, Siyu Zhang, Jingwen Chen
Summary: The study investigated the photochemical characteristics of S-DOM extracted from coastal seawaters and found that S-DOM accelerates the photodegradation of OMPs mainly through (DOM)-D-3*. Furthermore, the impact of mariculture on S-DOM influences the generation of (DOM)-D-3*, affecting the efficiency of photodegradation.
Article
Environmental Sciences
Ying Guo, Yong Guo, Shugui Hua, Guowei Xu, Zixuan Xu, Congcong Yan
Summary: The difference in photodegradation performance of rice straw biochar-derived dissolved black carbon (DBC) for Tetracycline and Methylene Blue under visible light irradiation has been investigated. Tetracycline is more easily degraded by DBC compared to Methylene Blue. Singlet oxygen (O-1(2)), superoxide radicals (center dot O-2(-)), holes (h(+)), and triplet DBC ((DBC)-D-3*) contribute to the degradation of Tetracycline by DBC, while only singlet oxygen (O-1(2)), superoxide radicals (center dot O-2(-)), and (DBC)-D-3* are involved in the degradation of Methylene Blue by DBC. Tetracycline is more easily oxidized and Methylene Blue is more easily reduced. The interaction between DBC and Tetracycline is stronger compared to the interaction between DBC and Methylene Blue.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Dong Wan, Jie Wang, Dionysios D. Dionysiou, Yaqian Kong, Wanying Yao, Steplinpaulselvin Selvinsimpson, Yong Chen
Summary: DBC derived from agricultural waste combustion can release dissolved black carbon (DBC) into surface waters, leading to the photogeneration of reactive species (RS) that efficiently degrade organic pollutants like PPCPs in aquatic environments under sunlight. The reactive species cause rapid degradation of selected PPCPs through one-electron transfer interaction and hydroxyl radical oxidation mechanisms, suggesting the potential for using biochar-derived DBC to enhance the photodegradation of organic pollutants in water.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Adam J. Rieth, Yangzhong Qin, Benjamin C. M. Martindale, Daniel G. Nocera
Summary: This study demonstrates the realization of a well-defined triplet excited state in cyanamide-modified carbon nitride, achieved by controlling the particle size, showing the significant role of this long-lived excited state in driving a photochemical cycle of photooxidation-reduction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Engineering, Environmental
Ziyan Zhou, Hao Wu, Boming Fu, Zhe Wang, Ran Hong, Liuqing Huang, Xinyue Gu, Cheng Gu, Xin Jin
Summary: Crop straw sourced dissolved black carbon (DBC) can enhance the photodegradation of triclosan in acidic conditions, especially in the presence of ferric minerals. This is mainly due to the rapid dissolution of ferric minerals by DBC, leading to the generation of hydrogen peroxide and hydroxyl radicals, which promote the degradation of triclosan.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Yi Tan, Su Sun, Zehui Deng, Pedro J. J. Alvarez, Xiaolei Qu
Summary: The dissolved black carbon (DBC) derived from biochar has intrinsic peroxidase-like activity, catalyzing the decomposition of H2O2 into hydroxyl radicals. The activity of DBC is influenced by temperature, pH, and its aromaticity and oxygen-containing groups. This discovery carries significant implications for global carbon cycling, pollutant fate processes, and the health and ecological impacts of black carbon.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Nanoscience & Nanotechnology
Cheng Zhang, Taotao Li, Yu Zheng, Man Zhang, Meilin Liu, Zhengjie Liu, Kui Zhang, Hengwei Lin
Summary: By introducing nitrogen heterocycles and coordinating with metal ions, room-temperature phosphorescent carbon dots have been successfully developed for applications in information encryption and anti-counterfeiting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Lu Han, Xiang Nie, Jing Wei, Mingyue Gu, Wenpei Wu, Mengfang Chen
Summary: This study investigated the influence of different biopolymer compositions on the characteristics of DBCs and found that as the heat treatment temperature increased, the carbonaceous structures of biopolymer compositions were reorganized and converted to graphitic structures. Additionally, lignin may facilitate the migration of DBCs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Chaochao Lai, Huan He, Zhicheng Liao, Ziwei Guo, Xiaomin Ren, Bin Huang, Xuejun Pan, Shuzhen Zhang
Summary: The structures and compositions of dissolved black carbon (DBC) during biotransformation and goethite adsorption processes were studied, and their photochemical properties were evaluated. Bio-transformed DBC (B-DBC) contained more aromatic and phenolic substances compared with pristine DBC (P-DBC), and showed superior capacity for producing (DBC)-D-3*, leading to enhanced photodegradation of 17 alpha-ethynylestradiol (EE2). Goethite fractionation selectively reduced high aromaticity and carboxylic functional groups in B-DBC, resulting in the oxidation of EE2 shifting from a single-electron transfer to the oxidation of center dot OH. This study provides valuable insights into the changes in photochemical behavior of DBC and enhances our understanding of its role in the fate of organic pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Matthew J. Bentley, Joshua P. Kearns, Benjamin M. Murphy, R. Scott Summers
Summary: The study shows that pretreatment with aqueous base and alkali and alkaline earth metals can enhance the adsorption capacity of biochar for organic micro pollutants, by tuning the pore structure and surface area. This method has the potential to be applied in water treatment applications.
Article
Environmental Sciences
Zhichao Hou, Qi Fang, Huaying Liu, Yingjie Li, Qun Zhao, Zhiyu Zhang, Yajie Lei, Senlin Tian
Summary: The study found that sulfamethazine undergoes rapid photodegradation in lower estuarine waters, while the photolytic rate of carbamazepine is inversely proportional to the salinity of the estuarine waters. Experiments suggest that the multivariate effects of triplet-excited E-DOM* and halide ions enhance the photolysis of sulfamethazine, while E-3-DOM* is the main factor affecting the photodegradation of carbamazepine.
ENVIRONMENTAL POLLUTION
(2021)
Review
Chemistry, Multidisciplinary
William Rodriguez-Cordoba, Luis Gutierrez-Arzaluz, Fernando Cortes-Guzman, Jorge Peon
Summary: Nitrated aromatic molecules exhibit unique photoinduced channels, undergoing sub-picosecond intersystem crossing and attracting attention from researchers. Recent studies using modern femtosecond spectroscopies and new computational methods have highlighted the role of nitroaromatic compounds in conversions between states.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Afang Wang, Peng Zhou, Dongqi Tian, Heng Zhang, Zhaokun Xiong, Ye Du, Chuanshu He, Yue Yuan, Tingting Chen, Yang Liu, Bo Lai
Summary: This study reports the catalyst-free activation of peroxydisulfate (PDS) via visible light for the removal of fluoroquinolones (FQs). The mechanism of PDS activation by the excited triplet state of FQs ((3)FQs*) is proposed. Experimental results show that PDS can generate more ·OH in the presence of (3)FQs*. Both radical and non-radical oxidation reactions contribute to the degradation of FQs in the system. QTOF analysis and DFT calculations clarify the degradation pathways and reactive sites. The system exhibits excellent selective oxidation for FQs.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Hui Wang, Mengqi Han, Mei Wang, Huaxi Zhou
Summary: Dissolved black carbon (DBC) can accelerate the photodegradation of hydrophobic organic contaminants (HOCs) and HOCs undergo a microheterogeneous photooxidative degradation process in DBC solutions. The sorption-enhanced phototransformation mechanism proposed in this study can effectively improve the degradation rate of HOCs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Muqiu Hu, Xin Zhao, Jinghan Gu, Lulu Qian, Zhiqing Wang, Yuanyuan Nie, Xiaoyu Han, Long An, Haiqiang Jiang
Summary: Due to its simple process, environmental friendliness, and low operating costs, biometallurgy has become a popular technology for metals recovering from low-grade ores and tailings. An optimized agar was used to isolate and grow functional bacteria, resulting in the successful isolation of six functional stains. These strains were further tested for their ability to leach metals from polymetallic sulfide tailings, with significant improvements observed when the strains were mixed together. The selection of leaching process should be based on tailings composition and target metals.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Saqib Hassan, Aswin Thacharodi, Anshu Priya, R. Meenatchi, Thanushree A. Hegde, R. Thangamani, Ht Nguyen, Arivalagan Pugazhendhi
Summary: An Endocrine Disrupting Chemical (EDC) is a compound that disrupts the function of the endocrine system and is found in the environment. EDCs, such as Bisphenol A and pesticides, have been shown to have negative effects on the female reproductive system. Understanding the relationship between EDCs and women's health is crucial for developing strategies to protect reproductive health and informing public policy decisions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Lichang Zhou, Zhaoling Li, Boyi Cheng, Jinqi Jiang, Xinqi Bi, Zongping Wang, Guanghao Chen, Gang Guo
Summary: Thiosulfate can promote sulfur-mediated bacterial activity, inhibit glycogen accumulating organisms, and enhance denitrification efficiency. After the carbon source is reduced, the competitive ability of glycogen accumulating organisms increases, resulting in reduced sulfate reduction.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Claire E. Campbell, Devyn L. Cotter, Katherine L. Bottenhorn, Elisabeth Burnor, Hedyeh Ahmadi, W. James Gauderman, Carlos Cardenas-Iniguez, Daniel Hackman, Rob McConnell, Kiros Berhane, Joel Schwartz, Jiu-Chiuan Chen, Megan M. Herting
Summary: Recent studies have found a connection between air pollution and increased risk for behavioral problems during development. However, more longitudinal studies are needed to investigate how exposure during the transition to adolescence may affect emotional behaviors.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Jing-hong Liang, Ru-yu Yang, Mei-ling Liu, Ying-qi Pu, Wen-wen Bao, Yu Zhao, Li-xin Hu, Yu-shan Zhang, Shan Huang, Nan Jiang, Xue-ya Pu, Shao-yi Huang, Guang-hui Dong, Ya-jun Chen
Summary: This study examines the association between urban Green and blue spaces (GBS) exposure and Emotion and behavior problems (EBP) in youth populations. The findings suggest that higher exposure to GBS, particularly green spaces (GS) and blue spaces (BS), is associated with a decrease in the risk of developing total difficulties in young individuals. The joint effect of GS and BS may also contribute to the decrease in EBPs.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Diego Ruiz-Sobremazas, Mario Ruiz Coca, Miguel Morales-Navas, Rocio Rodulfo-Cardenas, Caridad Lopez-Granero, Maria Teresa Colomina, Cristian Perez-Fernandez, Fernando Sanchez-Santed
Summary: Air pollution is associated with a range of health issues and gestational exposure to environmental pollutants may be linked to neurodevelopmental disorders. This study investigated the effects of oral gestational exposure to particulate matter (PM) on ultrasonic vocalizations (USV). The findings suggest that this exposure may lead to social deficits and abnormal gene expression related to neurotransmitter systems. Further research is needed to better understand the effects of air pollution on neurodevelopmental disorders and the neurotransmission systems involved.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Chuanwu Zhao, Yaozhong Pan, Hanyi Wu, Yu Zhu
Summary: This study analyzed the impact of industrial zones on urban heat islands using remote sensing images and a novel spectral index. The research found that the contraction or expansion of industrial zones has a significant effect on land surface temperature. The results are valuable for environmental assessment and fine management of industrial cities.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Bang Du, Zhongzhong Wang, Piet N. L. Lens, Xinmin Zhan, Guangxue Wu
Summary: This study investigated the performance, syntrophic relationships, microbial communities, and metabolic pathways of ethanol-fed reactors with different operational modes and solids retention times. The results showed that different microorganisms were enriched under different SRT conditions, and syntrophic bacteria related to methane production could be enriched under low SRT conditions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Gokulan Ravindiran, Sivarethinamohan Rajamanickam, Muralikrishnan Ramalingam, Gasim Hayder, Balamurugan Karupaiya Sathaiah, Madhava Krishna Reddy Gaddam, Senthil Kumar Muniasamy, Priya Arunkumar
Summary: The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The biochar produced by the marine algae Ulva reticulata was used to remove chromium, nickel, and zinc from aqueous solutions. The study examined the adsorbents' properties and stability using SEM/EDX, FTIR, and XRD. The results showed that the biochar had high removal efficiency for the toxic metals, and the packed bed column effectively removed the heavy metal ions. The Thomas and Adams-Bohart models were found to best fit the regression values, and desorption studies were conducted to understand the sorption and elution processes.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Vignesh Vinayagam, Kavitha Nagarasampatti Palani, Sudha Ganesh, Siddharth Rajesh, Vedha Varshini Akula, Ramapriyan Avoodaiappan, Omkar Singh Kushwaha, Arivalagan Pugazhendhi
Summary: The presence of pollutants in water contributes to global pollution and poses significant threats to humans and wildlife. Finding effective wastewater treatment techniques is crucial for reducing pollutant accumulation in the environment. This paper highlights recent advances in the electrochemical advanced oxidation method and other processes for treating pharmaceuticals, dyes, and pesticide-polluted effluents.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
M. M. M. Ahmed, Kai-Yue Chen, Fang-Yu Tsao, Yi-Cheng Hsieh, Yu-Ting Liu, Min Tzou
Summary: This study investigated the sorption of citric acid onto humic acid-iron hydr(o)xide coprecipitate (HAFHCP) and the reciprocal effects of citric acid and P sorption on HAFHCP. The results showed that citric acid could increase P availability and have an impact on P sorption.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Xibo Xu, Zeqiang Wang, Xiaoning Song, Wenjie Zhan, Shuting Yang
Summary: The selection of predictor variables is crucial in building a digital mapping model for potentially toxic elements (PTEs) in soil. Traditionally, spatial and spectral parameters have been used as predictor variables, but the temporal dimension is often overlooked. This study demonstrates the value of incorporating temporal indices in the model, leading to significant performance improvements. The temporal-spatial-spectral covariate combinations used in a random forest (RF) algorithm achieve satisfactory mapping accuracy and outperform other methods.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yan Pei, Xun Liu, Mengbo Cao, Zijun Wang, Hongbing Yang
Summary: Heteroatom doping can reconfigure the electronic structure of heterogeneous catalysts, leading to the development of advanced oxidation water purification materials with superior performance and stability. In this study, a series of catalysts with different elemental doping were prepared using a simple and environmentally friendly method. The S-doped NiCo2O4 catalyst showed excellent catalytic performance for the removal of Tetracycline, with significantly increased kinetic constant and high oxidation and mineralization efficiency in a wide pH range. The degradation process was dominated by non-radical oxidation pathway after S doping, and the overall process moved towards low toxicity.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Srivalli Thimmarayan, Harshavardhan Mohan, Gaddapara Manasa, Karthi Natesan, Shanmugam Mahendran, Pavithra Muthukumar Sathya, Byung-Taek Oh, R. Ravi Kumar, Rangasamy Sigamani Gandhimathi, Arul Jayaprakash, Kamala-Kannan Seralathan
Summary: This study investigated the bacterial degradation of naphthalene (NPT) isolated from crude oil-contaminated soil. Bacillus sp. GN 3.4, a potential bacteria for NPT biodegradation, was isolated and the optimal conditions for NPT degradation were determined. The study suggests that Bacillus sp. GN 3.4 could potentially aid in bioremediation by eliminating NPT from the soil.
ENVIRONMENTAL RESEARCH
(2024)