Article
Environmental Sciences
Samuel Barnie, Jia Zhang, Peter Appiah Obeng, Albert Ebo Duncan, Caspar Daniel Adenutsi, Lin Xu, Honghan Chen
Summary: This study investigated the adsorption, reduction, and complexation mechanisms of Cr(VI) in soils and sediments by humus, providing insights into the coupling mechanism of adsorption-reduction-complexation. A multi-step kinetic model was proposed to describe the transformation of Cr(VI) in various types of humus-enriched environments, showing better fitting performance compared to traditional kinetic models.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Hsin-Liang Huang, P. C. Lin, H. T. Wang, Hsin-Hung Huang, Chao-Ho Wu
Summary: Cr(VI) is a toxic metal released into soil from mining, electroplating, and smelting operations, and its removal is crucial to protect ecosystems. Vermiculite, with high cation exchange capacity, is a beneficial adsorbent for extracting Cr(VI) in situations of metal pollution during the remediation process. An ionic liquid, [C(4)mim]Cl, has shown efficiency in extracting Cr(VI) from contaminated sorbents in soil remediation.
Article
Environmental Sciences
Dandan Pan, Xiaoqin Wu, Panpan Chen, Zongyuan Zhao, Fugang Fan, Youxue Wang, Meiqing Zhu, Jiaying Xue, Yi Wang
Summary: The interactions between humic acid and three neonicotinoid insecticides were studied, revealing that the quenching of HA's fluorescence by the pesticides is mainly through hydrogen bonds and van der Waals forces. The binding abilities of dinotefuran, clothianidin and nitenpyram with HA were ranked as dinotefuran < clothianidin < nitenpyram. Dynamic light scattering results showed that neutral conditions facilitated the combination of HA with the insecticides.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Leila Alidokht, Shahin Oustan, Alireza Khataee
Summary: The study investigated the efficiency of bog peat-derived humic acid in the reductive removal of hexavalent chromium from aqueous solution, focusing on the impact of solution pH, Fe-III dosage, reaction time, and light irradiation. Regression models were developed and analyzed, showing a strong relationship between experimental and predicted responses. The highest Cr-VI removal efficiencies were achieved under specific optimal conditions in both dark and light-irradiated systems.
Article
Chemistry, Multidisciplinary
Weiqian Liang, Shuyin Wei, Longxia Lan, Jinfeng Chen, Yingyue Zhou, Jiawei Zhao, Hao Wang, Rui Gao, Feng Zeng
Summary: Heavy metal cations are persistent inorganic pollutants in aquatic environments, posing serious threats to ecological safety and human health. The coexistence of dissolved organic matter (DOM) and microplastics (MPs) has been found to promote the adsorption of heavy metal cations, but the underlying mechanism remains unclear. This study investigated the effect of polystyrene microplastics (PSMPs) on the binding properties of Pb2+ onto humic acid (HA) in aquatic environments using spectral analysis and two-dimensional correlation (2D-COS) analysis. The findings suggest that the presence of PSMPs enhances the adsorption capacity of Pb2+ on HA through both direct and indirect mechanisms.
Article
Engineering, Environmental
Rui Gao, Kunyan Cui, Weiqian Liang, Hao Wang, Shuyin Wei, Yingyue Zhou, Feng Zeng
Summary: This study investigates the MW-dependent adsorption heterogeneities of dissolved organic matter (DOM) on microplastics (MPs) in aquatic environments. The results show that high MW DOM exhibits higher adsorption affinities and complexation capacities with MPs compared to low MW DOM. Additionally, the heterogeneous distributions of active adsorption sites in DOM play a crucial role in adsorption. These findings provide important insights into the behavior of DOM and MPs in aquatic environments.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Materials Science, Ceramics
Perumal Karthikeyan, Krishnapillai Ramkumar, Kalimuthu Pandi, Aqsa Fayyaz, Sankaran Meenakshi, Chang Min Park
Summary: This study successfully investigated the use of two-dimensional MXenes as an adsorbent for removing Cr(VI) and MO from water. The MXenes showed fast removal rates, good regeneration ability, and high adsorption efficiency, demonstrating its selectivity and feasibility as an effective adsorbent.
CERAMICS INTERNATIONAL
(2021)
Article
Spectroscopy
Tao Lei, Han Zhang, Renjie Yang, Guimei Dong, Haixue Liu, Nan Wu
Summary: Fluorescence and UV-vis spectroscopy combined with two-dimensional correlation analysis were used to investigate the interaction between benzo[ghi]perylene (BGP) and humic acids (HA). The results showed that the fluorescence peaks and UV absorption peaks can be used to differentiate BGP and HA, and the slice spectral intensity can be used to quantify BGP concentration in mixture.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Biochemistry & Molecular Biology
Laurynas Jarukas, Liudas Ivanauskas, Giedre Kasparaviciene, Juste Baranauskaite, Mindaugas Marksa, Jurga Bernatoniene
Summary: The study analyzed the organic and humic substances from different sources of peat and sapropel, revealing their potential applications in various fields. Comparing extraction methods, it was found that active maceration was more efficient than ultrasound extraction. The highest amounts of fulvic acid and humic acid and humin were determined in pure brown peat samples.
Article
Ecology
Maria Bertaso De Garcia Fernandez, Lizete Stumpf, Pablo Miguel, Luiz Fernando Spinelli Pinto, Filipe Selau Carlos, Ryan Noremberg Schubert, Adao Pagani Junior, Eliana Aparecida Cadona, Juliana Maciel Bicca
Summary: Mining is highly destructive to natural ecosystems. This study examined the impact of revegetation and mowing management on soil quality after coal mining in Brazil's largest mine, Candiota Mine. The results showed that there was improvement in soil microbiological activity after 18 years of revegetation, but mowing management may not be the most effective method for improving soil conditions.
ECOLOGICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Xinyue Huang, Weina Mu, Chun Chang
Summary: Adsorption is an effective technology for removing heavy metals from wastewater. In this study, Ti3C2 was treated with intercalation to improve its adsorption performance, and a high-efficiency adsorbent, 1CTAB-Ti3C2, was constructed. The use of low-cost intercalation method provides a new idea for the application of MXenes based materials in heavy metal adsorption.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Agronomy
Mikhail A. Proskurnin, Dmitry S. Volkov, Olga B. Rogova
Summary: Diffuse reflectance FTIR measurements with 2D-COS were used to accurately identify the bands of chernozem soil organic matter (SOM) and mineral silicate matrix. The study compared samples from different land use types of a long-term field experiment. Homospectral and synchronous 2D-COS maps revealed correlation regions related to hydrogen bonds, SOM, and quartz matrix. The SOM range had distinct signatures, distinguishing different land use pairs. Asynchronous 2D-COS maps showed bands related to the proportion of silicate to quartz in small fractions, as well as carbonyl, carboxylate, and aromatic C-C in larger factions. The proposed approach provides reliable identification of SOM components with weaker IR bands compared to the mineral matrix.
Article
Engineering, Environmental
Xin Zhang, Hongxing Xu, Min Xi, Zhixiang Jiang
Summary: Remediation of Cr(VI) pollution by nanoscale zero-valent iron-loaded biochar (nZVI-BC) is a hot research topic. The interaction between natural organic matter (NOM) and Cr(VI) on their adsorption on nZVI-BC was investigated. nZVI-BCs with different ratios of Fe:C were prepared, and the optimal Fe:C ratio was determined to be 3:1. Adsorption experiments showed a strong competitive adsorption between Cr(VI) and NOM. Characterization techniques revealed the mechanisms behind the decreased Cr(VI) reduction and adsorption, as well as the decreased adsorption of NOM.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Jiayi Xu, Hanpei Yang, Jun Hou, Lingzhan Miao, Jun Wu
Summary: Fh often coexists with HA in the environment, but its impact on the transformation of Cr(VI) during sulfidation of Fh is poorly understood. Addition of HA increased Fe(II) concentration and inhibited surface passivation, leading to a lower Cr(VI)aq concentration. EDTA addition also promoted Fe(II) formation and resulted in lower Cr(VI)aq concentration in EDTA treatments. This study demonstrated the important role of HA in Cr(VI) transformation and provided a theoretical basis for in-situ remediation of Cr(VI) in the future.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Spectroscopy
Jin Qiu, Thi Huyen Nguyen, Seung Kim, Young Jin Lee, Meng-Ting Song, Wen-Juan Huang, Xiang-Bai Chen, Thi Minh Hien Nguyen, In-Sang Yang
Summary: In this study, we used two-dimensional correlation spectroscopy (2D-COS) to analyze the Raman spectra of NiO nanoparticles in the temperature range of 100 to 300 K. The 2D-Raman correlation spectra showed a strong correlation between the phonon spectral intensity variation and magnetic ordering in the NiO nanoparticles. It was found that the antiferromagnetic ordering affected the TO phonon anisotropy in the NiO nanoparticles. Complex spectral features of two-magnon (2 M) bands were elucidated through appropriate 2D-COS model simulations. The results supported the presence of significant spin-phonon coupling in the NiO nanoparticles, with high-energy magnon-magnon interaction tails also being involved in the spin-phonon coupling. 2D-COS analyses provided rich information about the phonon and magnon excitations in NiO nanoparticles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Environmental Sciences
Jia Zhang, Huilin Yin, Linpeng Chen, Fei Liu, Honghan Chen
ENVIRONMENTAL POLLUTION
(2018)
Article
Environmental Sciences
Jia Zhang, Huilin Yin, Hui Wang, Lin Xu, Barnie Samuel, Fei Liu, Honghan Chen
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Article
Chemistry, Multidisciplinary
Jia Zhang, Huilin Yin, Barnie Samuel, Fei Liu, Honghan Chen
Article
Environmental Sciences
Samuel Barnie, Jia Zhang, Hui Wang, Huilin Yin, Honghan Chen
Article
Environmental Sciences
Samuel Barnie, Jia Zhang, Peter Appiah Obeng, Albert Ebo Duncan, Caspar Daniel Adenutsi, Lin Xu, Honghan Chen
Summary: This study investigated the adsorption, reduction, and complexation mechanisms of Cr(VI) in soils and sediments by humus, providing insights into the coupling mechanism of adsorption-reduction-complexation. A multi-step kinetic model was proposed to describe the transformation of Cr(VI) in various types of humus-enriched environments, showing better fitting performance compared to traditional kinetic models.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Lin Xu, Jia Zhang, Samuel Barnie, Hui Zhang, Fei Liu, Honghan Chen
Summary: This study revealed the diverse adsorption mechanisms of PCP on HSs with different degrees of humification, highlighting the significant effect of coexisting Cr(VI) on PCP adsorption only by HSs with higher humification degrees.
Article
Environmental Sciences
Minghai Wei, Wenting Li, Jie Tang, Samuel Barnie, Jia Zhang, Honghan Chen
Summary: The environmental risks of Cr in different types of soil are significantly different, mainly determined by the valence and occurrence form of Cr controlled by the soil constituents and properties. Additionally, the stable form of Cr in the black soil column after the reaction suggests that soil organic matter can be utilized as a potential environmentally friendly remediation material for Cr(VI) contaminated soils at COPR sites.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Environmental Sciences
Kaidi Jiang, Jia Zhang, Zhihui Deng, Samuel Barnie, Jingjie Chang, Yawen Zou, Xiangyu Guan, Fei Liu, Honghan Chen
Summary: This study investigated the zoning characteristics of abiotic and biotic effects in a Cr(VI) contaminated natural wetland. The contaminated zone was dominated by chemical reduction by natural organic matters, while the downstream area saw direct microbial reduction of Cr(VI). The transition zone experienced intermittent Cr(VI) presence with indirect reduction by Fe2+.
ENVIRONMENTAL POLLUTION
(2021)
Article
Geochemistry & Geophysics
Samuel Barnie, Jia Zhang, Albert Ebo Duncan, Martha Osei-Marfo, Caspar Daniel Adenutsi, Honghan Chen
Summary: This study emphasizes that the organic matter in soils and sediments, known as kerogen, plays a crucial role in the adsorption, reduction, and complexation of Cr(VI) within the subsurface environment. The geochemical processes of kerogen can vary at different temperature stages, affecting its interaction with Cr(VI) and ultimately influencing the fate of this contaminant. It is important to consider the complexities of kerogen, characterized by its heterogeneity, functionalities, aliphaticity, and aromaticity, rather than treating it as a uniform organic phase.
APPLIED GEOCHEMISTRY
(2022)
Article
Environmental Sciences
Fang Yuan, Jia Zhang, Jian Chen, Honghan Chen, Samuel Barnie
Summary: This paper clarifies the process and mechanism of acid groundwater pumping-injection remediation and reveals the principle and impact of pore blockage through a field pumping test. The results show that increasing the injection pressure and reducing the injected water pH can improve the repairing efficiency, providing important reference value for the control and remediation of acid-polluted groundwater.
Article
Chemistry, Multidisciplinary
Jia Zhang, Huilin Yin, Samuel Barnie, Minghai Wei, Honghan Chen
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
