Article
Ecology
Ali Mahmoodi, Mohammad Reza Alizadeh Kiapi, Hamidreza M. Nick
Summary: Adding nitrate or nitrite to seawater injections can mitigate the production of hydrogen sulfide in an oil reservoir. However, excessive or insufficient treatment may lead to increased production. The location of the hydrogen sulfide generation zone and its distance from production wells also play a significant role in production levels.
ECOLOGICAL MODELLING
(2023)
Article
Energy & Fuels
Shuyuan Deng, Bo Wang, SanBao Su, Shanshan Sun, Yuehui She, Fan Zhang
Summary: This study investigated the field application of a bio-inhibitor (nitrate and nitrite injection) for souring control in an oilfield. The results showed that the bio-inhibitor effectively removed H2S from the injected water, leading to cost-effective treatments for souring control.
Article
Green & Sustainable Science & Technology
A. Mahmoodi, H. M. Nick
Summary: Seawater flooding as a secondary or tertiary oil recovery method may face challenges of scale deposition and reservoir souring. This study finds that scale formation has a minor impact on reservoir souring, but reservoir souring and nitrate treatment significantly influence scale formation. Moreover, more efficient nitrate treatment leads to a closer proximity of the hydrogen sulfide generation zone to the production well.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Bo Wang, Shuyuan Deng, Sanbao Su, Shanshan Sun, Chao Chen, Hao Xu, Hongfei Ma, Ibrahim M. Banat, Yuehui She, Fan Zhang
Summary: Researchers simulated the inhibition of hydrogen sulfide (H2S) in the laboratory using water samples from injection wells in the Jianghan reservoir. The addition of NO3- and NO2- effectively reduced the levels of H2S and elemental sulfur. Nitrate-reducing bacteria (NRBs) suppressed the activity of sulfate-reducing bacteria (SRBs) through nitrite accumulation and competition for organic substrates. Sulfur-oxidizing bacteria were accumulated for souring control when SRBs activity could not be suppressed.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Moein J. Veshareh, Kasper U. Kjeldsen, Alyssa J. Findlay, Hamidreza M. Nick, Hans Roy, Angeliki Marietou
Summary: Microbial sulfate reduction is the main source of hydrogen sulfide in offshore oil reservoirs, with nitrate, nitrite, and perchlorate being potential inhibitors. Nitrate inhibits sulfide accumulation by promoting sulfate reduction and sulfide oxidation, while nitrite is the most efficient inhibitor. Further field scale studies are needed to confirm the effectiveness of perchlorate as a souring mitigation agent.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Review
Microbiology
Jia-Yi Li, Lu Wang, Yi-Fan Liu, Lei Zhou, Hong-Ze Gang, Jin-Feng Liu, Shi-Zhong Yang, Bo-Zhong Mu
Summary: This review summarizes the production of lipopeptide and glycolipid biosurfactants by fifty-eight different bacterial strains under anaerobic conditions, with a detailed analysis of the metabolic pathways and non-ribosomal peptide synthetases of Bacillus subtilis in such conditions. This information aims to enhance the understanding of the growth and production mechanisms of these bacteria under anaerobic conditions for potential industrial applications.
Article
Engineering, Environmental
Jiemin Zhou, Jianmin Xing
Summary: Sulfate-reducing bacteria play a crucial role in responding to nitrate stress in saline-alkali environments, with the addition of nitrate activating the denitrification pathway in denitrifying bacteria and relieving nitrate inhibition on SRB.
Article
Microbiology
Zhendong Yang, Zhenghua Liu, Aleksandra Sklodowska, Marcin Musialowski, Tomasz Bajda, Huaqun Yin, Lukasz Drewniak
Summary: This study investigated the effectiveness of a sulfide-oxidizing bacterial consortium isolated from post-mining wastes in removing sulfide from industrial leachate, with promising results in reducing sulfide concentration but requiring bioaugmentation with other bacteria for complete leachate treatment to meet discharged limits.
Article
Engineering, Environmental
Jin-Di Liu, Xiang-Ming Hu, Yue Feng, Yan-Yun Zhao, Ming-Yue Wu, Xu-Wei Wang, Xiao-Xiao Yu, Chun-Yu Song, Qing-Shan Wang, Zhi Geng, Ding-Chen Shen, Hao-Yu Wang
Summary: In this study, a biosurfactant-producing bacteria was screened from coal and its species, types, and composition of biosurfactants were determined. The analysis revealed that the biosurfactants were glycolipids with different structures. The biosurfactant-producing bacteria showed effective production of biosurfactants with improved wetting effect compared to common chemical surfactants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Microbiology
Varsha Dhar, Rajesh Singh
Summary: In this study, the ability of heat-pretreated sulfate-reducing bacteria (SRBs) to simultaneously remove sulfate and nitrate in a bioelectrochemical system (BES) was evaluated. The effect of an applied potential of 20 mV on SRBs was assessed at sulfate and/or nitrate concentrations before heat pretreatment. The highest H-2 production was observed in the presence of sulfate at an applied potential of 20 mV, and simultaneous reduction of sulfate and nitrate was significant during heat-shock pretreatment. The kinetics of heat-pretreated culture showed higher H-2 production with continuous application of 20 mV potential.
ARCHIVES OF MICROBIOLOGY
(2023)
Article
Multidisciplinary Sciences
Ivan Kushkevych, Dani Dordevic, Monika Vitezova
Summary: This study aimed to monitor processes related to sulfate reduction microbial metabolisms, including identifying main microbial genera and their hydrogen sulfide production in the intestines of healthy and unhealthy individuals, conducting phylogenetic and cluster analysis of SRB isolates, calculating growth kinetic parameters, and analyzing relationships between SRB biomass accumulation, temperature, and pH. The results revealed differences in SRB morphotypes and hydrogen sulfide concentrations between healthy individuals and patients with colitis, indicating potential risk indicators for ulcerative colitis prevalence.
JOURNAL OF ADVANCED RESEARCH
(2021)
Article
Agronomy
Claudio Lamilla, Heidi Schalchli, Gabriela Briceno, Barbara Leiva, Pamela Donoso-Pinol, Leticia Barrientos, Vanessa A. L. Rocha, Denise M. G. Freire, M. Cristina Diez
Summary: Biosurfactants, produced by microorganisms, are less toxic and more biodegradable compared to synthetic surfactants. Bacteria tolerant to pesticides in biopurification systems can efficiently produce biosurfactants, which can enhance pesticide degradation. Further studies on biosurfactants from biopurification systems could have important environmental biotechnology applications.
Article
Engineering, Environmental
M. Danouche, A. Bounaga, R. Boulif, Y. Zeroual, R. Benhida, K. Lyamlouli
Summary: Phosphogypsum (PG) generated during phosphoric acid production contains a significant amount of sulfate, which can be biologically converted into sulfide. This study focuses on selecting and evaluating microbial consortia from sulfate-rich environments for the initial step of sulfur recovery. The MYC-consortium isolated from a hydrothermal niche showed the highest reduction capacity and performance under various conditions. This research provides insights into the potential of the MYC-consortium in converting sulfate from PG into sulfide, which is a critical step in sulfur biorecovery.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Chemical
Ivan Kushkevych, Aneta Kovarova, Dani Dordevic, Jonah Gaine, Peter Kollar, Monika Vitezova, Simon K. -M. R. Rittmann
Summary: This review discusses the importance of sulfate-reducing bacteria (SRB) in producing hydrogen sulfide and their cryopreservation methods. It highlights the factors affecting microbial viability after cryopreservation and recommends storing SRB in glass vials with low salt concentration. Furthermore, it emphasizes the potential impact of SRB in medical, construction, and environmental sectors from a molecular biological and bioengineering perspective.
Article
Energy & Fuels
Erisvaldo B. de Jesus, Luiz R. P. de Andrade Lima
Summary: The study simulated the effect of molybdate ions in treating souring using different injection strategies, finding that the origin and composition of injection water influences the development and activity of sulfate-reducing bacteria, and that adding molybdate during secondary recovery is an effective way to prevent reservoir acidification.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Ruizhi Zhou, Caiqing Yan, Qiaoyun Yang, Hongya Niu, Junwen Liu, Fanli Xue, Bing Chen, Taomeizi Zhou, Haibiao Chen, Junyi Liu, Yali Jin
Summary: The implementation of Blue Sky War in Beijing-Tianjin-Hebei (BTH) region, China, has significantly reduced the concentrations of organic carbon (OC) and elemental carbon (EC) in the atmosphere, and the levels of secondary organic carbon (SOC) showed a fluctuating trend. This study highlights the importance of controlling primary emissions and conducting further research on SOC formation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Yibo Liu, Baiyu Zhang, Yong-He Han, Ye Yao, Ping Guo
Summary: This study investigates the involvement of exogenous arsenic-reducing bacteria (EARB) in root surface biofilm (RSB) formation and its role in enhancing arsenic (As) phytoextraction. It is found that EARB successfully participate in RSB formation, leading to increased As accumulation in plant roots.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Min Yang, Baiyu Zhang, Xiujuan Chen, Qiao Kang, Boyang Gao, Kenneth Lee, Bing Chen
Summary: This study investigated the transport of microplastic-oil-dispersant agglomerates (MODAs) in a simulated ocean system and explored related mechanisms under different conditions. It was found that heavy oil-formed MODAs mainly stayed at the seawater surface, while light oil-formed MODAs were distributed throughout the seawater column. Increased salinity promoted the transport of certain MODAs, and minerals facilitated the sinking of large microplastic-formed MODAs. The study proposed a MODA-mineral system and recommended Rubey's equation for predicting sinking velocity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Engineering, Environmental
Xiaying Xin, Bing Chen, Min Yang, Sichen Gao, Hongjie Wang, Wenwen Gu, Xixi Li, Baiyu Zhang
Summary: This review examines the interaction between microplastics/nanoplastics and co-existing contaminants, such as organic contaminants, potentially toxic elements, and metal/metal-oxide nanoparticles. The characteristics of the plastics, including polymer type, size, functional groups, and weathering, influence their combined effects with the co-existing contaminants. Mixture toxicity is not only affected by these factors, but also by the type of contaminants, their concentrations, exposure time, dissolved organic matter, and surfactants. Different organisms show different responses to the complex system. Organic contaminants can be biodegraded, which may enhance or alleviate mixture toxicity. Potentially toxic elements can be adsorbed and desorbed under changing environments, further affecting the combined effects. The presence of metal/metal-oxide nanoparticles is more complicated, as some particles may release ion metals, increasing the contaminant composition.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Yinshun Dai, Yamin Dong, Liangfeng Duan, Baiyu Zhang, Shuguang Wang, Shan Zhao
Summary: This study found that the presence of elemental sulfur (S0) in sulfidated zero-valent iron (S-ZVI) can enhance the removal of Cr(VI) and improve recyclability when compared to FeS or iron polysulfides (FeSx, x > 1). The formation of micro-galvanic cells, the semiconductor properties of cyclo-octasulfur S0 with Fe2+ substitution, and the in situ generation of highly reactive iron monosulfide (FeSaq) or polysulfides precursors (FeSx, aq) were identified as the reasons for this improved performance. The interaction between S0 and ZVI required direct contact and overcoming the spatial barrier caused by FexSy formation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Fei Zheng, Xin Guo, Mingyang Tang, Dong Zhu, Hongtao Wang, Xiaoru Yang, Bing Chen
Summary: This study assessed soil heavy metal pollution in different urbanization regions (urban area, suburb, and ecoregion) in Baoding City, Northern China. The results showed that suburban areas had higher levels of heavy metal contamination compared to urban or ecoregion areas, primarily originating from agricultural activity, industrial sources, and natural sources. Carcinogenic risks to children's health were highest in suburban areas, followed by the ecoregion, but not in urban areas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Spectroscopy
Masoumeh Rostami, Baiyu Zhang, Yan Zhang
Summary: A fluorescent sensor of nitrogen-doped carbon quantum dots (N-CQDs) and silica gel hybrid was developed for the quantitative detection of nitenpyram. The sensor exhibited remarkable selectivity and sensitivity towards nitenpyram. The selective sensing is attributed to the excitation light absorption of nitenpyram, leading to fluorescence quenching of the sensor.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Engineering, Environmental
Yinshun Dai, Weiyu Du, Chao Jiang, Wanqi Wu, Yamin Dong, Liangfeng Duan, Shiwen Sun, Baiyu Zhang, Shan Zhao
Summary: Crystalline iron sulfide minerals were used to prepare sulfidated microscale zero-valent iron, which exhibited better chloramphenicol degradation. The FeSx-based samples had a larger contribution of direct electron transfer and better electron utilization under oxic conditions. The rapid transformation of nitroso and azoxy products was crucial for eliminating the biotoxicity of chloramphenicol.
Review
Oceanography
Huifang Bi, Catherine N. Mulligan, Baiyu Zhang, Mark Biagi, Chunjiang An, Xiaohan Yang, Linxiang Lyu, Xinya Chen
Summary: This article focuses on surface washing agents as a feasible tool for oil spill cleanup. It compares three types of spill treating agents and systematically summarizes the important characteristics of surface washing agents. The article discusses their application scenarios and challenges, as well as the policy and decisionmaking processes involved.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Siyang Cheng, Xinghong Cheng, Jianzhong Ma, Xiangde Xu, Wenqian Zhang, Jinguang Lv, Gang Bai, Bing Chen, Siying Ma, Steffen Ziegler, Sebastian Donner, Thomas Wagner
Summary: In this study, we conducted mobile MAX-DOAS measurements in the Three Rivers' Source region over the Tibetan Plateau to investigate the tropospheric concentrations of NO2 and HCHO. The results show a decrease in NO2 and HCHO VCDs with increasing altitude, and the spatial distribution of HCHO VCDs is influenced by natural and meteorological conditions.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Bo Liu, Baiyu Zhang, Guihua Dong, Fei Wu, Bing Chen
Summary: Chlorination is a commonly used technique for drinking water disinfection, but it can produce disinfection by-products (DBPs) that threaten water safety. This study introduces environmental microfluidics to a UVA-LED photocatalytic oxidation system for the rapid oxidation of organic matter. The results show that low pH conditions favor the adsorption and degradation of organic matter. The microreactor effectively reduces DBP formation potential and increases water purification efficiency.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Multidisciplinary
Fatemeh Salami, Jian-bin Lin, Bing Chen, Baiyu Zhang, Yuming Zhao
Summary: In this work, the elusive macrocyclic organic compound cyclo-di-BADGE, a by-product of co-polymerization reactions of bisphenol A and bisphenol A diglycidyl ether, was comprehensively characterized using NMR, single crystal X-ray diffraction, UV-Vis, dynamic light scattering, molecular dynamics simulations, fluorescence, and molecular docking analyses. The results provide valuable knowledge about the physico-chemical properties and relevant effects of cyclo-di-BADGE on the environment and biological systems.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Yonghui Jin, Fan Liu, Yanhui Li, Qiuju Du, Fengling Song, Bing Chen, Kewei Chen, Yang Zhang, Mingzhen Wang, Yaohui Sun, Shiyong Zhao, Zhenyu Jing, Xinxin Pi, YuQi Wang, Dechang Wang
Summary: Micro-nano metal-organic framework (MIL-68(Fe)) and a MIL-68(Fe)/chitosan composite sponge (MIL-68(Fe)/CS) were successfully prepared for efficient adsorption of azo anionic dye Congo red (CR). The MIL-68(Fe)/CS showed faster adsorption kinetics and easier desorption than MIL-68(Fe). The adsorption process of MIL-68(Fe)/chitosan composite sponge on CR is a complex physicochemical process, influenced by factors such as pH, contact time, adsorbent dosage, initial solution concentration, and temperature. The removal rates and adsorption capacity of CR by MIL-68(Fe)/chitosan composite sponge reached high values, and the synergistic effects of different interactions contributed to the CR removal.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
