Article
Engineering, Environmental
Xizhi Wang, Yuanyuan Liu, Bin Liu
Summary: This study found that chromite ore processing residue (COPR) released Cr(VI) over time, making the remediation of COPR-contaminated sites challenging. Laboratory simulations showed that Cr(VI) could leach out and migrate vertically into the surrounding soil and groundwater, even after decades of aging. The smaller COPR particles were found to have migrated downward into the deep soil.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Akanksha Gupta, Anubhuti Singh, Virendra Kumar Mishra
Summary: Soil contamination by hexavalent chromium has become a major problem in recent decades due to its bioaccumulative and harmful effects on human health. Existing treatment technologies have limitations, and biological removal of chromium can be a potential alternative. By introducing chromium-resistant plant growth-promoting bacteria (PGPB), phytoremediation efficiency can be enhanced through increased metal absorption and plant growth promotion.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Environmental Sciences
Shiqi Han, Xuelei Zhou, Honghao Xie, Xiaohong Wang, Lingze Yang, Huili Wang, Chen Hao
Summary: In this study, a chitosan-based microsphere biosorbent with high adsorption capacity and short adsorption equilibrium time for hexavalent chromium was successfully prepared using an adsorption method.
Article
Energy & Fuels
A. Hariharan, V Harini, Sai Sandhya, S. Rangabhashiyam
Summary: The present study evaluates the feasibility of using Musa acuminata bract as a biosorbent for the removal of hexavalent chromium from synthetic wastewater. The results indicate that the optimum pH for effective biosorption is 2.0, with a biosorption capacity of 36.84 mg/g and 87.55% removal of Cr(VI). The Langmuir isotherm model shows the best fit, and the pseudo-second-order kinetic model provides the highest coefficient of determination.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Environmental Sciences
Robson da Costa Leite, Adriano Reis Lucheta, Roseanne Barata Holanda, Patricia Magalhaes Pereira Silva, Andre Luiz Vilaca do Carmo, Fernando Gama Gomes, Rubson da Costa Leite, Caio Cesar Amorim de Melo, Raphael Vieira da Costa, Marcelo Montini, Antonio Rodrigues Fernandes
Summary: Soil conditioner is a product used to improve soil physics, physiochemical or biological activities, and can restore disturbed or unbalanced soils. A new formulation of soil conditioner composed of bauxite residue (BR) and organic oil palm wastes was proposed as an innovative strategy for amending acid soils in Brazil. The results showed that the use of BR combined with palm oil mill waste (POMW) was similar to the use of limestone in terms of soil pH changes, leachate composition, and agronomical performance.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Konstantina Pyrgaki, Efstratios Kelepertzis, Ariadne Argyraki, Pascal Boeckx, Fotini Botsou, Emmanuel Dassenakis
Summary: A coupled methodology of nitrogen isotopes, hydrogeochemical characterization, multivariate statistical analysis, and SIAR Bayesian modeling was used to identify the sources of NO3- and N transformation processes in three alluvial aquifers in central Greece. The study found that the groundwater in these aquifers is contaminated with hexavalent chromium and nitrate. The dominant nitrogen transformation process was nitrification, which was influenced by domestic sewage and N-bearing fertilizers. Multivariate statistical analysis revealed that salinization, silicate dissolution, and groundwater contamination due to fertilizer use were the main processes in the study areas.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Elina Ceballos, Jordi Cama, Josep M. Soler, Robert Frei
Summary: Our study focused on the leaching processes of hexavalent chromium (Cr(VI)) in contaminated soil, resulting in groundwater contamination. Characterization of the soil using various techniques revealed that the main source of Cr was solid waste in the upper meter of the soil. Flow-through and column experiments were conducted to understand the release and mobility of Cr(VI), and numerical simulations helped interpret these processes. The accurate characterization of these processes is crucial for effectively mitigating Cr(VI) mobility in contaminated soils.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Aoyun Li, Jinxue Ding, Ting Shen, Zhaoqing Han, Jiabin Zhang, Zain Ul Abadeen, Muhammad Fakhar-e-Alam Kulyar, Xin Wang, Kun Li
Summary: The study revealed that long-term exposure to Cr (VI) significantly alters the gut microbial diversity and composition in chickens, marking a breakthrough in understanding the impact of Cr (VI) on the intestinal microbiota of chickens.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Physical
Zymantas Rudzionis, Arunas Aleksandras Navickas, Gediminas Stelmokaitis, Remigijus Ivanauskas
Summary: This study presents the immobilization of hexavalent chromium in the form of Na2CrO4 salt using self-compacting soils (SCS). The efficiency of immobilization was evaluated by washing out chromium compounds from SCS samples. The results showed that the nature of the soil and the content of Carbofill E in the SCS samples affect the immobilization of hexavalent chromium, with higher Carbofill E content leading to increased immobilization. X-ray diffraction studies revealed that the immobilized hexavalent chromium transformed into oxide forms of chromium and calcium-chromium, which are insoluble in water.
Article
Chemistry, Physical
Luping Zhang, Jialing Zhao, Shuwang Zhang, Qianqian Yu, Jing Cheng, Xinhong Qiu
Summary: In this study, single-layer LDHs were successfully prepared and F-U-MgAl showed the highest efficiency in removing Cr(VI), reaching adsorption equilibrium within 1 minute. The adsorption mechanisms of F-U-MgAl were determined to include anion exchange, surface adsorption, and electrostatic attraction, as revealed by XRD and SEM analysis.
APPLIED CLAY SCIENCE
(2021)
Article
Biodiversity Conservation
Ji Liu, Tianyi Qiu, Josep Penuelas, Jordi Sardans, Wenfeng Tan, Xiaomeng Wei, Yongxing Cui, Qingliang Cui, Chuanfa Wu, Lanfa Liu, Baitao Zhou, Haoran He, Linchuan Fang
Summary: This study found that crop residue inputs can increase soil organic carbon, nitrogen, and phosphorus contents, helping to alleviate soil carbon limitation and maintain balanced soil stoichiometry. The increase in soil organic carbon and carbon-to-nitrogen (phosphorus) ratio reached saturation after around 13-16 years, while the increase in grain yield stopped. A predictive model was proposed to evaluate the potential for crop residue improvement under different soil conditions and nitrogen input levels.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Environmental Sciences
Bowen Yang, Jiawei Dai, Yuan Zhao, Zhanchao Wang, Jingwei Wu, Caiya Ji, Yuhu Zhang, Xiao Pu
Summary: Biochar-coupled Fe3O4@SiO2/TiO2/g-C3N4 composites were successfully synthesized and exhibited excellent performance in removing high-concentration tetracycline (TC) through middotOH and middotO(2)(-) generation. The composites showed a removal rate of 91.88% within 3 hours and a degradation rate constant of 0.0068 min(-1). The outstanding performance was attributed to factors such as high specific surface area, enhanced visible light response, introduction of magnetic nanoparticles and biochars, Z-scheme heterojunction, and extraordinary adsorption capacity.
Article
Engineering, Environmental
Yafeng Wang, Hefa Cheng
Summary: Potentially toxic elements from geothermal springs in the Yangbajain geothermal field on the Tibetan Plateau have caused significant pollution and potential risks to the local ecosystem, particularly in rivers and animal feeds. Evaluation: 8 points
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Review
Engineering, Environmental
Zahoor H. Farooqi, Muhammad Waseem Akram, Robina Begum, Weitai Wu, Ahmad Irfan
Summary: Hexavalent Chromium is a highly carcinogenic and toxic material, widely recognized as one of the major environmental contaminants in aquatic systems. Research suggests that the reduction of hexavalent chromium to trivalent chromium has attracted significant interest, as trivalent chromium is an essential nutrient for organisms. Critically reviewing technologies based on nanoparticles for the conversion of hexavalent chromium into trivalent chromium can provide valuable insights for future development in this area.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Soil Science
Neeraj Kumar, Ankur Chaudhary, O. P. Ahlawat, Anandkumar Naorem, Ganesh Upadhyay, R. S. Chhokar, S. C. Gill, Anil Khippal, S. C. Tripathi, G. P. Singh
Summary: Crop residue plays a crucial role in agro-environment services, but the modernization of crop production has led to increased residue and management challenges, particularly in developing countries like India where burning is a common practice. The long-term effects of residue burning and climate change pose serious threats to natural resources and sustainable crop production. This review article provides critical insights on residue production and management, discussing various approaches for sustainable residue utilization and industrial applications. It also explores the prospects of deriving soil ameliorants and energy from crop residues, as well as the challenges and future directions for sustainable residue management.
SOIL & TILLAGE RESEARCH
(2023)
Article
Geochemistry & Geophysics
Noriko Yamaguchi, Toshiaki Ohkura, Atsuko Hikono, Yohey Hashimoto, Aomi Suda, Taku Yamamoto, Kaori Ando, Masahiro Kasuya, Paul Northrup, Shan-Li Wang, Dean Hesterberg
Summary: Global concerns about the sustainable agriculture have led to the emphasis on reducing mineral fertilizer usage. This study investigated the distribution and speciation of accumulated phosphorus in soils through macro- and microscopic techniques, with results showing that compost application contributed to creating diverse microenvironments for hosting phosphorus in the soils.
Article
Chemistry, Physical
Hung-Yun Lin, Tsung-Ju Chuang, Puu-Tai Yang, Ling-Yi Guo, Shan-Li Wang
Summary: Thallium (Tl) is a highly toxic environmental contaminant, and its adsorption and desorption in soil are influenced by various soil components, showing a certain degree of reversibility. The type and content of clay minerals and exchangeable cations in soils play a significant role in the adsorption and reversibility of Tl(I).
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Environmental
Puu-Tai Yang, Shan-Li Wang
Summary: The study found that soil properties have a significant impact on the sorption and desorption of molybdenum. While acidic soils showed higher sorption of molybdenum, there was also partial desorption. In contrast, under high pH conditions, the sorption of molybdenum became irreversible.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Yao-Jen Tu, Shan-Li Wang, Ying-Rui Lu, Ting-Shan Chan, Cliff T. Johnston
Summary: This study synthesized six kinds of magnetic nanoferrites to investigate their ability in removing Sb(III) and Sb(V) from aquatic systems. The results showed that ZnFe2O4 had great potential to adsorb and oxidize Sb(III) in aqueous solutions, providing essential information for designing a rapid and effective Sb removal technique.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Environmental Sciences
Sabry M. Shaheen, Jianxu Wang, Karen Baumann, Ashour A. Ahmed, Liang-Ching Hsu, Yu-Ting Liu, Shan-Li Wang, Oliver Kuehn, Peter Leinweber, Joerg Rinklebe
Summary: The study reveals that in arable soils, P, Fe2+, and OC mobilize at E-H <= 200 mV, while P immobilizes at E-H > 200 mV due to strong binding with Fe3+. Additionally, pH changes and interactions with Fe3+, organic carbon, and carbonates play a key role in the migration and retention of P during redox processes.
Article
Engineering, Environmental
Xing Yang, Marvin Hinzmann, He Pan, Jianxu Wang, Nanthi Bolan, Daniel C. W. Tsang, Yong Sik Ok, Shan-Li Wang, Sabry M. Shaheen, Hailong Wang, Jorg Rinklebe
Summary: Contamination of paddy soils by arsenic is a major concern, and animal-derived biochar can impact the mobilization of As under fluctuating redox conditions. Pig carcass-derived biochar was found to decrease the concentration of dissolved As under oxidizing conditions, but increase it under reducing conditions in contaminated paddy soils.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Jian Hua, Ying-heng Fei, Chunhua Feng, Chengshuai Liu, Sheng Liang, Shan-Li Wang, Feng Wu
Summary: This study investigated the formation of oxidative intermediates during Fe(II)aq-induced recrystallization of goethite under anoxic conditions, confirming the generation of Fe(IV) originated from interfacial electron exchange between Fe(II)aq and Fe(III). This provides new insight into the anoxic oxidative transformation processes of matters in non-surface environments on earth.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Kai-Yue Chen, Puu-Tai Yang, Hsin-Fang Chang, Kuo-Chen Yeh, Shan-Li Wang, Guillaume Echevarria
Summary: The study found that gallium speciation in soil-rice plant systems varied during rice cultivation, affecting the availability of gallium to rice plants.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Xing Yang, Sabry M. Shaheen, Jianxu Wang, Deyi Hou, Yong Sik Ok, Shan-Li Wang, Hailong Wang, Joerg Rinklebe
Summary: Iron-modified biochar shows potential in immobilizing arsenic in paddy soils under varying redox conditions, through transforming As-bound Fe (hydro)oxides and forming complexes. Raw biochar with its porous structure and oxygen-containing functional groups can also effectively immobilize arsenic in soils.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Jianhong Li, Shan-Li Wang, Lirong Zheng, Dongliang Chen, Zhipeng Wu, Chenghua Sun, Nanthi Bolan, Hongting Zhao, An-an Peng, Zheng Fang, Rongfu Zhou, Guobin Liu, Amit Bhatnagar, Yong Qiu, Hailong Wang
Summary: This study investigates the retention mechanisms of potentially toxic elements (PTEs) by different biochars, revealing that ammonia, nitric acid, and hydrogen peroxide modified biochars show more efficient sorption sites for Pb and Cu compared to unmodified biochar. The results provide novel insights into the PTE retention mechanisms of modified biochars.
Article
Engineering, Environmental
Vasileios Antoniadis, Giorgos Thalassinos, Efi Levizou, Jianxu Wang, Shan-Li Wang, Sabry M. Shaheen, Joerg Rinklebe
Summary: In this study, the levels of potentially toxic elements (PTEs) in soil, weeds, and olives in the Greek town of Lavrio were measured, revealing high concentrations of seven PTEs in the soil. X-ray absorption analysis showed the association of these PTEs with specific minerals and substances. The transfer of PTEs to weeds was low, and the levels of cadmium and lead in olives exceeded the EU limits. The study highlighted the urgent need for ecofriendly remediation in Lavrio and could serve as a valuable reference for similar industrial areas.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Albert Kobina Mensah, Bernd Marschner, Jianxu Wang, Jochen Bundschuh, Shan-Li Wang, Puu-Tai Yang, Sabry M. Shaheen, Jorg Rinklebe
Summary: The mobilisation and speciation of arsenic in polluted gold mine sites in tropical climates are not well understood. This study investigated the impact of soil redox potential on the mobilisation of arsenic and its dominant species in an abandoned spoil. The results showed that arsenic mobilisation increased under moderately reducing conditions and decreased under oxic conditions. The dominant species of arsenic varied with redox conditions, with As(V) dominating under oxic conditions and As(III) predominating under moderately reducing conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Soil Science
Shoko Uchida, Yohey Hashimoto, Akira Takamoto, Keiichi Noguchi, Wantana Klysubun, Shan-Li Wang
Summary: This study investigates the adsorption behavior of allophane and ferrihydrite in volcanic ash soils with regards to phosphate. The results show that allophane has a higher affinity for phosphate compared to ferrihydrite, especially at low to intermediate concentrations. Additionally, the study finds that precipitation of Al-phosphate occurs in allophane and allophane-ferrihydrite mixtures.
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
(2022)
Article
Soil Science
Martin H. Gerzabek, Georges Stoops, Franz Ottner, Shan-Li Wang, Liang-Sin Huang, Franz Zehetner
Summary: The different ages of the islands in the Galapagos archipelago are due to a geostationary volcanic hotspot and the eastward movement of the Nazca tectonic plate. A recent study used a soil chronosequence to investigate the temporal development of soil microstructure and micromineralogy in four islands. The results showed that the microstructure changed with age, with increasing heterogeneity in intermediate developmental stages and receding heterogeneity in highly weathered soils.
Article
Engineering, Environmental
Hao-Cheng Chang, Ping-Yong Chou, Mei-Ping Cheng, Ting-Hsun Hsiao, Kai-Yin Lo, Shan-Li Wang
Summary: Livestock and poultry waste contains a significant amount of phosphorus, and recycling this phosphorus can solve environmental pollution and reduce the need for phosphate rock. Adding a carbon source can greatly improve the release of phosphorus by changing the microbial community and lowering the pH. After appropriate treatment, the released phosphorus can be recovered as struvite.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
