Article
Environmental Sciences
Xiu-Tong Li, Zhong-Sheng Huang, Ye Huang, Zhen Jiang, Zong-Lin Liang, Hua-Qun Yin, Guang-Ji Zhang, Yan Jia, Ye Deng, Shuang-Jiang Liu, Cheng-Ying Jiang
Summary: Monitoring the microbial community in bioleaching system is crucial for controlling process parameters and enhancing leaching efficiency. This study investigated the geo-chemical parameters and microbial community structure in a bioleaching heap and leachate. The results revealed that pH, Cu, Fe, and total sulfur contents were major factors shaping the microbial communities in the bioleaching system. The abundance of sulfur and iron oxidizers was significantly higher in the leaching heap than in the leaching solution, while members of Leptospirillum and unclassified Archaea were abundant in the leaching solution and showed strong interactions with members of Thermoplasmatales. This study provides theoretical guidance for future process design and control of microbial community in heap leaching.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Engineering, Chemical
Anne J. Whitworth, James Vaughan, Gordon Southam, Antony van der Ent, Philip N. Nkrumah, Xiaodong Ma, Anita Parbhakar-Fox
Summary: The increasing demand for critical metals in the transition to low-carbon economies and advancements in high-tech has led to a global drive to find and develop these resources. Mining and processing wastes can provide significant concentrations of critical metals, but the extraction process requires suitable technologies.
MINERALS ENGINEERING
(2022)
Article
Engineering, Chemical
Shufen Liu, Shenghai Yang, Tao Luo, Yongming Chen
Summary: The alkaline pressure oxidative leaching (APOL) method efficiently extracts tin, desulfurizes, dearsenifies, and separates tin and copper from Sn-Cu bearing residue, leading to the production of high-purity SnO2 and CuSO4·5H2O, economically and efficiently recycling valuable metals in an environmentally friendly way.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yunlong Zhao, Yajie Zheng, Hanbing He, Zhaoming Sun, An Li
Summary: The study investigated the aluminum extraction from bauxite reaction residue (BRR) under different hydrochloric acid leaching conditions. The optimal aluminum dissolution rate was found to be 44.15%, and even after silica removal, the aluminum extraction rate remained stable. Under high pressure, the aluminum extraction rate significantly increased to 84.23%, with the leaching process being controlled by liquid diffusion according to experiments and kinetics analysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Aslihan Cam, M. Deniz Turan
Summary: Aluminum production from bauxite can encounter problems such as excessive red mud formation, environmental risks, and the need for large storage sites. This study used a two-stage leaching process to extract metal from bauxite ore. The first stage involved leaching under atmospheric conditions with oxalic acid, selectively extracting iron into the solution and enriching refractory aluminum in the leaching residue. The second stage involved leaching the residue with NaOH in a pressurized reactor system, achieving an aluminum extraction rate of approximately 70%.
JOURNAL OF SUSTAINABLE METALLURGY
(2023)
Article
Environmental Sciences
Ying Lv, Jia Li, Xingyu Liu, Bowei Chen, Mingjiang Zhang, Zhenxing Chen, Tian C. Zhang
Summary: A strain with superior silicon-activating ability, Ochrobactrum sp. T-07-B, was isolated and identified from EMR in this study. It showed significantly higher silicon leaching efficiency compared to commercially available pure culture strains. The newly isolated strains have the potential to be used for more efficient silicon activation in silicate minerals.
ENVIRONMENTAL RESEARCH
(2021)
Review
Energy & Fuels
Monika Kasina, Kinga Jarosz
Summary: In response to material shortages, environmental concerns, and technological advancements, incinerated waste materials are now being considered as secondary resources. This paper examines the methods for recovering valuable components from incinerated sewage sludge and simultaneously removing or stabilizing elements that may harm the environment. The paper analyzes the efficiency, limitations, and future prospects of various chemical methods, including leaching and chelating, as well as the potential application of microbiological approaches. While the described methods are relatively efficient and cost-effective, further development is still needed. Microbiological approaches, despite their potential advantages, are underutilized in incinerated sewage sludge treatment.
Article
Multidisciplinary Sciences
M. R. Kanekaputra, M. Z. Mubarok
Summary: This research investigates the effectiveness of scandium extraction from bauxite residue through pressure leaching in a sulfuric acid solution. The optimal condition for scandium extraction was found to be at 1.5 M H2SO4, a leaching duration of 1 hour, a temperature of 200 degrees C, and a slurry density of 30% (w/w). Under these conditions, a scandium extraction of 90.97% was achieved.
Review
Environmental Sciences
Yingbo Dong, Jinyu Zan, Hai Lin
Summary: Recovering key metals from secondary sources through the use of microorganisms plays a vital role in preventing metal shortages and reducing toxic releases. This method is environmentally friendly and potentially cost-effective. The study analyzes various factors influencing bioleaching processes and effects, including microorganisms, mineral properties, and leaching conditions. It also explores the mechanisms of extracting metals from tailings using acidolysis, complexolysis, redox-olysis, and bioaccumulation. Additionally, the article discusses key parameters and strategies to improve leaching efficiency, such as mutagenesis breeding, mixed culture microorganisms, and the use of biochar and surfactants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Xiaojian Liao, Maoyou Ye, Jialin Liang, Shoupeng Li, Zihang Liu, Yanghong Deng, Zhijie Guan, Qiaowei Gan, Xiaodi Fang, Shuiyu Sun
Summary: The addition of ascorbic acid in the mixed culture bioleaching process can enhance the leaching efficiency of metals from spent Li-ion batteries, making it a promising alternative for effective metal extraction.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Metallurgy & Metallurgical Engineering
Changye Mang, Guanghui Li, Yanhu Chen, Jun Luo, Mingjun Rao, Tao Jiang
Summary: The mechanisms of ion co-precipitation during partial neutralization were investigated, and it was found that intense agitation and high temperature could break the coordination bonds between ions. The addition of cationic or anionic surfactants limited the formation of these bonds.
Article
Engineering, Chemical
Juan Lorenzo-Tallafigo, Nieves Iglesias-Gonzalez, Aurora Romero-Garcia, Alfonso Mazuelos, Pablo Ramirez del Amo, Rafael Romero, Francisco Carranza
Summary: Mineralurgical and metallurgical processes generate harmful residues containing a low percentage of target metals. Bioleaching is an environmentally friendly process that avoids acid mine drainage and allows for the recovery of target metals. However, due to the low grade of target metals, reprocessing these residues is not economically feasible. Nonetheless, the bioleaching process releases ferric ion and sulfuric acid that can be utilized in the hydrometallurgical circuit.
MINERALS ENGINEERING
(2022)
Review
Metallurgy & Metallurgical Engineering
Sandeep Kumar Jena
Summary: The global demand for potassium is increasing due to agricultural growth. Some countries have soluble potash minerals while others rely on imports. There is potential for commercial potassium production from potassium-bearing rocks/minerals.
MINING METALLURGY & EXPLORATION
(2021)
Review
Environmental Sciences
P. R. Yaashikaa, B. Priyanka, P. Senthil Kumar, S. Karishma, S. Jeevanantham, Sravya Indraganti
Summary: This review discusses the environmental pollution caused by printed circuit boards and the methods for recovering valuable and hazardous metals from e-wastes. It highlights the use of chemical, biological, and physical approaches for metal recovery, emphasizing the need for advanced recycling methods to address pollution challenges posed by PCBs.
Article
Engineering, Environmental
Yuhui Zhang, Xiaoyan Feng, Long Qian, Jin Luan, Bingjie Jin
Summary: The study developed a two-stage countercurrent alkali leaching followed by one-stage sulfuric acid leaching process to efficiently separate arsenic and extract zinc and copper from high-arsenic copper smelting dust. The results showed high separation efficiency of arsenic in alkali leachate and high extraction rates of zinc and copper in sulfuric acid leachate. The proposed process not only achieved successful separation of the metals, but also minimized environmental pollution.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Yuguang Wang, Xinhua Chen, Hongbo Zhou
BIORESOURCE TECHNOLOGY
(2018)
Article
Agricultural Engineering
Yuguang Wang, Kai Li, Xinhua Chen, Hongbo Zhou
BIORESOURCE TECHNOLOGY
(2018)
Article
Environmental Sciences
Wenbo Zhou, Junzi Wu, Weimin Zeng, Yuguang Wang, Ning Guo, Lijuan Zhang, Lili Wan, Hongbo Zhou
GEOMICROBIOLOGY JOURNAL
(2019)
Article
Agricultural Engineering
Liyuan Ma, Hongmei Wang, Jiangjun Wu, Yuguang Wang, Du Zhang, Xueduan Liu
BIORESOURCE TECHNOLOGY
(2019)
Article
Environmental Sciences
Ronghui Liu, Zhuang Tian, Haina Cheng, Hongbo Zhou, Yuguang Wang
Summary: This study investigated the leaching efficiency and metal redistribution of metal-containing plant incineration ash (MPIA) using organic acid as leaching agents. The results showed that organic acid leaching could effectively dissolve heavy metals in MPIA and meet regulatory standards.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Haina Cheng, Mingzhu Yuan, Qiang Zeng, Hongbo Zhou, Wenhao Zhan, Hui Chen, Zhenhua Mao, Yuguang Wang
Summary: This study isolated a new strain that efficiently reduces dyes and Cr(VI) from textile wastewater, achieving high degradation and reduction efficiencies under specific conditions. Different metal ions and electron donors play different roles in promoting the degradation process. Through further investigation, the reduction mechanisms were revealed, with specific surface groups on the bacteria involved in the reduction process.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Jianxing Sun, Wenxian Liu, Ruichang Tang, Haina Cheng, Ronghui Liu, Kang Liu, Wenhao Zhan, Yang Ge, Hongbo Zhou, Yuguang Wang
Summary: This study investigated the bioleaching behavior of Cu and Co from non-ferrous residues using iron-oxidizing bacteria (IOB) and sulfur-oxidizing bacteria (SOB). The results showed that IOB had a better performance on extracting Cu and Co, especially for Cu. Under the optimal ratio of the initial number of IOB and SOB, 77.7% and 79.8% of Cu and Co were extracted, indicating a promising application prospect for cleaner resource recycling.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Jianxing Sun, Wenbo Zhou, Lijuan Zhang, Haina Cheng, Yuguang Wang, Ruichang Tang, Hongbo Zhou
Summary: The recovery of precious metals from solid waste through bioleaching has become a research hotspot, with bioleaching showing higher efficiency in copper extraction compared to chemical leaching. Utilizing mixed consortium bioleaching can reduce environmental pollution and use metal resources more efficiently.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Yang Ge, Haina Cheng, Wenbo Zhou, Hongbo Zhou, Yuguang Wang
Summary: This study demonstrated that the microbial consortium dominated by sulfur-oxidizing bacteria can effectively enhance the removal of Cd and Zn from contaminated soil. The bioleaching group showed the best removal efficiencies compared to other treatments, with 79.3% of Cd and 45.2% of Zn removed under certain conditions. After remediation, there was a decrease in total phosphorus and available potassium, and the exogenous microbes became the dominant population.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Article
Agriculture, Multidisciplinary
Wenxian Liu, Shizhe Tang, Jing Peng, Lina Pan, Jiaqi Wang, Haina Cheng, Zhu Chen, Yuguang Wang, Hongbo Zhou
Summary: This study improved the soluble expression and enzyme activity of α-1,2-fucosyltransferases using a combinatorial engineering strategy, addressing the challenges in the biosynthesis of 2'-FL.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Engineering, Environmental
Hui Chen, Zhu Chen, Xueyan Chu, Yan Deng, Shengqiang Qing, Chongran Sun, Qi Wang, Hongbo Zhou, Haina Cheng, Wenhao Zhan, Yuguang Wang
Summary: Seasonal temperature changes have a significant impact on microbial community diversity, composition, and performance in wastewater treatment plants. This study investigated the effects of temperature on microbial performance and co-occurrence networks, as well as the assembly processes that determine the structure and function of microbial communities during aniline wastewater treatment. The results showed that functional redundancy played a role in maintaining excellent microbial performance throughout the process. The balance between stochastic and deterministic processes mediated the reoccurrence of microbial communities and co-occurrence networks at different temperatures.
Article
Engineering, Environmental
Hui Chen, Yangyang Wang, Zhu Chen, Zhiqiang Wu, Xueyan Chu, Shengqiang Qing, Longqi Xu, Kang Yang, Qingyuanhao Meng, Haina Cheng, Wenhao Zhan, Yuguang Wang, Hongbo Zhou
Summary: Salinity is a major concern in the biological treatment of high-salinity wastewater. Understanding how microorganisms respond to salinity stress and their impact on ecosystem function and community stability is crucial. However, little is known about the relationships between microorganisms under salinity stress. Therefore, a study was conducted using an anoxic-oxic reactor to investigate the effects of elevated salinity on system performance, microbial community dynamics, and co-occurrence networks during urine wastewater treatment. The results showed that the reactor achieved high removal rates of urea and COD across a wide range of salinity levels. Increased salinity resulted in decreased microbial alpha diversity and significant changes in beta diversity. The co-occurrence networks showed a greater proportion of negative correlations under elevated salinity, suggesting a survival strategy for microorganisms. Clostridiales and Oceanospirillales played important roles in maintaining system stability, with the oxic communities being more stable than the anoxic communities under salinity stress. These findings provide new insights into microbial relationships in response to salinity and offer a reference basis for the efficient treatment of high-salinity wastewater.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Su Li, Zhuang Tian, Ronghui Liu, Wenbo Zhou, Haina Cheng, Jianxing Sun, Kaifang Zhao, Yuguang Wang, Hongbo Zhou
Article
Metallurgy & Metallurgical Engineering
Wen-bo Zhou, Kai Li, Yu-guang Wang, Li-juan Zhang, Hai-na Cheng, Hong-bo Zhou
METALLURGICAL RESEARCH & TECHNOLOGY
(2019)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)