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Total 83489 results found since Jan 2013.
Simultaneous removal of phosphorus, zinc, and lead from oligotrophic ecosystem by iron-driven denitrification: Performance and mechanisms
This study aimed to achieve the simultaneous removal of nitrate, phosphorus, Zn2+ and Pb2+ through microbial approach. At nitrate concentration of 4.82 mg L-1, carbon to nitrogen ratio of 1.5, pH of 6.0, and Fe2+ concentration of 5.0 mg L-1, the nitrate removal efficiency of Zoogloea sp. FY-6 reached 95.17%. The addition of pollutants under these conditions resulted in 88.76% removal of total phosphorus at 18 h, and 85.46 and 78.59% removal of Zn2+ and Pb2+ respectively, and there was competition for adsorption between Zn2+ and Pb2+. Extracellular polymers and fluorescence excitation-emission substrates confirmed that Fe2+...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Zhennan Zhou Amjad Ali Liang Xu Junfeng Su Shuyu Liu Xuan Li Source Type: research
Efficient HCl leaching of platinum group metals from waste three-way catalysts: A study on kinetics and mechanisms
In this study, we focused on the leaching process of HCl after pretreatment. Our investigation includes a detailed examination of leaching kinetics and mechanisms. The optimal leaching conditions were: leaching temperature of 150 °C, leaching time of 2 h, HCl concentration of 12 M, and liquid-solid ratio of 10 mL/g. The experiments resulted in maximum leaching rates of about 96%, 97%, and 97% for Pt, Pd, and Rh, respectively. However, given the presence of heavy metals, attention needs to be paid to the harmless treatment of waste acids and leaching residues. The Pt and Pd leaching process is controlled by a mixture of in...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Shiqiang Sun Wenting Zhao Chenxi Jin Wenzhi He Guangming Li Haochen Zhu Source Type: research
Multifunctional and theranostic hydrogels for wound healing acceleration: An emphasis on diabetic-related chronic wounds
Environ Res. 2023 Sep 14:117087. doi: 10.1016/j.envres.2023.117087. Online ahead of print.ABSTRACTHydrogels represent intricate three-dimensional polymeric structures, renowned for their compatibility with living systems and their ability to naturally degrade. These networks stand as promising and viable foundations for a range of biomedical uses. The practical feasibility of employing hydrogels in clinical trials has been well-demonstrated. Among the prevalent biomedical uses of hydrogels, a significant application arises in the context of wound healing. This intricate progression involves distinct phases of inflammation,...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Pooya M Tehrany Parham Rahmanian Aryan Rezaee Golnaz Ranjbarpazuki Farima Sohrabi Fard Yasaman Asadollah Salmanpour Mohammad Arad Zandieh Ali Ranjbarpazuki Sajedeh Asghari Nazanin Javani Noushin Nabavi Amir Reza Aref Mehrdad Hashemi Mohsen Rashidi Afshin Source Type: research
Microbial diversity characterizations, associated pathogenesis and antimicrobial resistance profiling of Najafgarh drain
Environ Res. 2023 Sep 14:117140. doi: 10.1016/j.envres.2023.117140. Online ahead of print.ABSTRACTThe Najafgarh drain plays a significant role in the pollution of the Yamuna River, accounting for 40% of the total pollution. Therefore, it is crucial to investigate and analyze the microbial diversity, metabolic functional capacity, and antibiotic resistance genes (ARGs) present in the Najafgarh drain. Additionally, studying the water quality and its relationship with the proliferation of microorganisms in the drain is of utmost importance. Results obtained confirmed the deteriorated water quality as physico-chemical paramete...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Inderjeet Tyagi Koamud Tyagi Vipin Gupta Ritesh Dutta Nirjara Singhvi Vikas Kumar Rakesh Bhutiani Om Prakash Source Type: research
Effects of polyvinylchloride microplastics on the toxicity of nanoparticles and antibiotics to aerobic granular sludge: Nitrogen removal, microbial community and resistance genes
Environ Res. 2023 Sep 14:117151. doi: 10.1016/j.envres.2023.117151. Online ahead of print.ABSTRACTCopper oxide nanoparticles (CuO NPs) and ciprofloxacin (CIP) have ecological risk to humans and ecosystems. Polyvinylchloride microplastics (PVC MPs), as a representative of microplastics, may often coexist with CuO NPs and CIP in wastewater treatment systems due to their widespread application. However, the co-impact of PVC MPs in wastewater systems contained with CuO NPs and CIP on nitrogen removal and ecological risk is not clear. In this work, PVC MPs co-impacts on the toxicity of CuO NPs and CIP to aerobic granular sludge...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Yu-Qi Li Bai-Hang Zhao Yu-Qing Zhang Xin-Yue Zhang Xiao-Tang Chen Hai-Shan Yang Source Type: research
Nanoparticles and nanofiltration for wastewater treatment: From polluted to fresh water
Environ Res. 2023 Sep 14:117114. doi: 10.1016/j.envres.2023.117114. Online ahead of print.ABSTRACTWater pollution poses significant threats to both ecosystems and human health. Mitigating this issue requires effective treatment of domestic wastewater to convert waste into bio-fertilizers and gas. Neglecting liquid waste treatment carries severe consequences for health and the environment. This review focuses on intelligent technologies for water and wastewater treatment, targeting waterborne diseases. It covers pollution prevention and purification methods, including hydrotherapy, membrane filtration, mechanical filters, r...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Tomy Muringayil Joseph Hussein E Al-Hazmi Bogna Śniatała Amin Esmaeili Sajjad Habibzadeh Source Type: research
Emergency department visits associated with wildfire smoke events in California, 2016-2019
We examined associations between smoke events and emergency department visits (EDVs) for respiratory, cardiovascular, diabetes, and mental health outcomes in California during the wildfire season June-December 2016-2019. Daily, zip code tabulation area-level wildfire-specific fine particulate matter (PM2.5) concentrations were aggregated to air basins. A "smoke event" was defined as an air basin-day with a wildfire-specific PM2.5 concentration at or above the 98th percentile across all air basin-days (threshold = 13.5 μg/m3). We conducted a two-stage time-series analysis using quasi-Poisson regression considering lag effe...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Annie I Chen Keita Ebisu Tarik Benmarhnia Rupa Basu Source Type: research
Investigation of manganese-iron oxide nanocomposite immobilized on powdered activated carbon as an efficient activator of peroxymonosulfate for antibiotics degradation: Conjunction of adsorption, radical and nonradical processes
Environ Res. 2023 Sep 14:117150. doi: 10.1016/j.envres.2023.117150. Online ahead of print.ABSTRACTPeroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) have gained considerable attention for their efficient oxidation of persistent pollutants. A two-step chemical co-precipitation method was used to prepare a bimetallic nanocomposite (MnOx@Fe3O4) consisting of manganese oxides and ferroferric oxides, supported by powdered activated carbon (PAC). The synthesis of MnOx@Fe3O4-PAC (MFP) was aimed to enhance the degradation efficiency of oxytetracycline (OTC) via the simultaneous adsorption and oxidation processes on ...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Jiahui Zhou Shu Wang Source Type: research
Research progress on bioleaching recovery technology of spent lithium-ion batteries
Environ Res. 2023 Sep 14:117145. doi: 10.1016/j.envres.2023.117145. Online ahead of print.ABSTRACTBioleaching of lithium-ion batteries is a microbially catalyzed process. Under the action of redox, acid leaching and complexation in the presence of microorganisms, the valuable metals in the cathode material enter the liquid phase as ions and are subsequently recovered from the succeeding process. This technique has the advantages of being inexpensive, environmentally friendly and having simple needs. However, it is still in development and has not yet commercialized. In this paper, the technology is fully discussed based on...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Jiafeng Li Haijun Zhang Haifeng Wang Baojing Zhang Source Type: research
Elicitation of E-waste (acrylonitrile-butadiene styrene) enriched soil bioremediation and detoxification using Priestia aryabhattai MGP1
Environ Res. 2023 Sep 14:117126. doi: 10.1016/j.envres.2023.117126. Online ahead of print.ABSTRACTGiven the rise in both usage and disposal of dangerous electronics, there is a catastrophic rise in assemblage of electronic waste (e-waste). E-waste including various plastic resins are among the most frequently discarded materials in electronic gadgets. In current digital era, managing e-waste has become universal concern. From the viewpoint of persisting lacuna of e-waste managing methods, the current study is designed to fabricate an eco-friendly e-waste treatment with native soil bacteria employing an enrichment culture m...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Moumita Chakraborty Barkha Sharma Ankita Ghosh Diksha Sah J P N Rai Source Type: research
Runoff mitigation on agricultural fields via micro-dams - Literature review and derivation of runoff curve number reductions
Environ Res. 2023 Sep 14:117128. doi: 10.1016/j.envres.2023.117128. Online ahead of print.ABSTRACTWater runoff and soil erosion by water from agricultural fields lead to a loss of water available for plant growth, loss of topsoil and transport of plant protection products (PPPs), hence constituting contaminant pathways to adjacent surface water. Several mitigation measures are used, including small earthen dams or depressions, referred to as micro-dams. This practice has been applied worldwide since the 1930s. In the regulatory exposure assessment for the registration of PPPs, runoff curve numbers (CNs) are used in the PRZ...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Stephan Sittig Robin Sur Source Type: research
Metagenome-assembled genomes reveal carbohydrate degradation and element metabolism of microorganisms inhabiting Tengchong hot springs, China
Environ Res. 2023 Sep 14:117144. doi: 10.1016/j.envres.2023.117144. Online ahead of print.ABSTRACTA hot spring is a distinctive aquatic environment that provides an excellent system to investigate microorganisms and their function in elemental cycling processes. Previous studies of terrestrial hot springs have been mostly focused on the microbial community, one special phylum or category, or genes involved in a particular metabolic step, while little is known about the overall functional metabolic profiles of microorganisms inhabiting the terrestrial hot springs. Here, we analyzed the microbial community structure and thei...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Zhufeng Zhang Tao Liu Xudong Li Qing Ye Hina Iqbal Bangash Jinshui Zheng Nan Peng Source Type: research
An interval water demand prediction method to reduce uncertainty: A case study of Sichuan Province, China
In this study, we constructed a GA-BP-KDE hybrid interval water demand prediction model by combining non-parametric estimation and point prediction. Multiple metaheuristic algorithms were used to optimize the Back-Propagation Neural Network (BP) and Kernel Extreme Learning Machine (KELM) network structures. The performance of the water demand point prediction models was compared by the Root Mean Squared Error (RMSE), Mean Absolute Percentage Error (MAPE), Kling-Gupta Efficiency (KGE), computation time, and fitness convergence curves. The kernel density estimation method (KDE) and the normal distribution method were used to...
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Xinyu Xia Bin Liu Rui Tian Zuli He Suyue Han Ke Pan Jingjing Yang Yiting Zhang Source Type: research
Corrigendum to "Effects of pollen concentration on allergic rhinitis in children: A retrospective study from Beijing, a Chinese megacity" Environ. Res. 229(2023) 115903/ER-22-11024
Environ Res. 2023 Sep 14;238(Pt 1):117069. doi: 10.1016/j.envres.2023.117069. Online ahead of print.NO ABSTRACTPMID:37716086 | DOI:10.1016/j.envres.2023.117069
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Yuxin Zhao Zhaobin Sun Li Xiang Xingqin An Xiaoling Hou Jing Shang Ling Han Caihua Ye Source Type: research
Silver isotopes: A tool to trace smelter-derived contamination
Environ Pollut. 2023 Sep 14:122557. doi: 10.1016/j.envpol.2023.122557. Online ahead of print.ABSTRACTHere, for the first time, we report the concentrations and isotopic data of Ag in a variety of ore and metallurgical samples and forest soils that have been polluted due to Ag-Pb smelter emissions. Similar to the Ag concentrations, we identified a large range of δ109Ag values (from -0.8 to +2.4‰), a ∼3‰ spread, within the primary and secondary materials (i.e., galena, fly ash, slags and matte). This phenomenon, however, is evidently unrelated to Ag isotopic fractionation during the smelting process, but it reflects t...
Source: Environmental Pollution - September 16, 2023 Category: Environmental Health Authors: Ale š Vaněk Maria Va ňková Martin Mihaljevi č Vojt ěch Ettler Petr Drahota Lenka Vondrovicov á Petra Vokurkov á Ivana Galu šková Tereza Z ádorová Ryan Mathur Source Type: research
