Article
Geosciences, Multidisciplinary
Tracy Rankin, Nigel Roulet, Elyn Humphreys, Matthias Peichl, Jarvi Jarveoja
Summary: This study investigates the composition and influencing factors of ecosystem respiration (ER) in northern peatlands, revealing differences compared to other peatland types. The study found that autotrophic respiration (AR) contributes more to ER, while heterotrophic respiration (HR) increases with rising temperature and water table depth. The study also highlights the influence of plant biomass on the magnitude of ER and the differences between directly measured ER and estimates based on nighttime temperature relationships.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Fabian Koerte, Cordula Daniela Wessendorf, Thomas Schnabel, Markus Herrmann, Birgit Schroeppel, Kathrin Stadelmann, Elsa Arefaine, Luisa Busch, Ruben Daum, Erik Ahlswede, Hanna Hartmann
Summary: Perovskite solar cells have the potential for high efficiency at low cost. A new approach using biopolymers to generate a lead binding coating has been developed to reduce lead leakage risk. Increasing the thickness of the coating enhances its lead binding capacity, and it can be successfully applied to various substrates. The coating reduces lead release after damage to the cell's encapsulation, without affecting overall efficiency, thus limiting the inherent risk of lead leakage in perovskite solar cells.
Article
Agronomy
Roger H. Tang, Peter D. Erskine, Philip Nti Nkrumah, Guillaume Echevarria, Antony van der Ent
Summary: Metallophytes are plants that can tolerate extreme metal concentrations in soil. A study on the Dugald River gossan in Australia found that there was no direct relationship between the occurrence of metallophytes and prevailing soil metal concentrations. Crotalaria novae-hollandiae was identified as a strong polymetallic indicator-type metallophyte that can accumulate high concentrations of metals in its leaves.
Article
Geography, Physical
Dominika Lucow, Martin Kuttim, Michal Slowinski, Piotr Kolaczek, Monika Karpinska-Kolaczek, Liisa Kuttim, Meryt Salme, Mariusz Lamentowicz
Summary: The exploitation of peatlands in Estonia has caused extensive damage, prompting the need for policies focusing on protection and restoration. A study comparing the pristine and restored states of a peat core revealed significant ecological contrasts. Restoration aims to create a vibrant peat bog ecosystem with well-functioning indicators.
QUATERNARY INTERNATIONAL
(2022)
Article
Environmental Sciences
Pan Pan, Huizhan Liu, Ang Liu, Xinchun Zhang, Qingmian Chen, Guihua Wang, Beibei Liu, Qinfen Li, Mei Lei
Summary: This study investigated the immobilization of cadmium (Cd) in soils using vermicompost under different pH and low-molecular-weight organic acids (LMWOAs) conditions. The results showed that the adsorption capacity of vermicompost for Cd increased with increasing pH, and chemisorption dominated the adsorption process. The addition of oxalic acid promoted Cd adsorption, while citric acid and malic acid inhibited Cd adsorption, through blocking effects and dissolving mineral components.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Shiv Bolan, Balaji Seshadri, Ian Grainge, Nicholas J. Talley, Ravi Naidu
Summary: This study investigated the impact of gut microbes on the bioaccessibility of lead in soil, finding that gut microbes can decrease the bioaccessibility of lead, particularly at low pH values. Additionally, the study revealed that lead adsorption by gut microbes increased at higher pH levels, with Escherichia coli adsorbing more lead than Lactobacillus species.
Article
Biochemistry & Molecular Biology
Katarzyna Socha, Alicja Karwowska, Adam Kurianiuk, Renata Markiewicz-Zukowska, Andrzej Guzowski, Marek Gacko, Tomasz Hirnle, Maria H. Borawska
Summary: The study aimed to estimate the levels of copper, zinc, selenium, cadmium, and lead in the tissue of patients with aortic aneurysms. Differences in concentrations of these elements were observed among different types of aneurysms, with implications that oxidative stress and inflammatory processes may play significant roles in the development of certain types of aneurysms.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Hongxiao Zhang, Wenli Zhou, Yahua Chen, Huawei Xu, Dianyun Hou, Shufang Lv, Xijing Sun, Fayuan Wang, Liming Yang
Summary: Macleaya cordata exhibits different absorption and transport characteristics for lead, zinc, cadmium, and copper. It shows higher tolerance to lead and zinc, making it suitable for the remediation of compound-polluted soil or water. The addition of zinc or copper affects the accumulation of lead and cadmium in different plant parts, highlighting the importance of understanding the metal uptake and transport mechanisms in M. cordata.
APPLIED SCIENCES-BASEL
(2022)
Article
Environmental Sciences
Zhuowen Meng, Shuang Huang, Zhongbing Lin, Wenting Mu, Haimeng Ge, Daoyou Huang
Summary: This study quantified the long-term immobilization of Cd by biochar and its potential risk in soils with different pH levels under a simulated aging process. The results showed that biochars had a positive effect on Cd immobilization in acidic and neutral soils, but had negative effects in alkaline soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Fereshteh Mohamadhasani, Mehdi Rahimi
Summary: Heavy metal contamination in water and soil is a serious issue caused by industrial and mining activities, and mycoremediation using fungi has been shown to be efficient in removing toxic contaminants. Pleurotus species have been found to be more tolerant to cobalt and copper compared to nickel, with nickel concentrations inhibiting fungal growth even at low levels. The study also showed that heavy metals increased the activity of antioxidative enzymes in fungi but resulted in decreased growth and increased metal accumulation at higher concentrations.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Chao Hu, Zuhong Zheng, Mengyao Huang, Fan Yang, Xuewei Wu, Aiqun Zhang
Summary: This study analyzed a magnetite-chitosan composite through various techniques and explored its adsorption properties for Cu(II) and Cd(II). The results showed that the optimum pH for adsorption was 5.0, the equilibrium time was about 10 minutes, and the adsorption capacity reached 26.28 mg/g for Cu(II) and 18.67 mg/g for Cd(II). The temperature had a certain impact on the adsorption amount, and the composite material had a relatively rough outer surface, with dominant adsorption being attributed to chitosan. The research suggests the importance of further optimizing the composite system through green synthesis for heavy metal adsorption.
Article
Chemistry, Applied
Larissa Pinto Silva, Naira Da Silva Campos, Thalles Pedrosa Lisboa, Lucas Vinicius de Faria, Maria Auxiliadora Costa Matos, Renato Camargo Matos, Rafael Arromba de Sousa
Summary: An effective and simple method using SWASV was proposed for simultaneous determination of cadmium, lead and copper in chocolate samples. The method involved ultrasonic bath extraction and achieved good linearity, precision and accuracy. The new method is especially attractive for case studies and routine analysis, offering advantages over traditional methods.
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
(2021)
Article
Environmental Sciences
Yared Beyene Yohannes, Shouta M. M. Nakayama, John Yabe, Haruya Toyomaki, Andrew Kataba, Hokuto Nakata, Kaampwe Muzandu, Yoshinori Ikenaka, Kennedy Choongo, Mayumi Ishizuka
Summary: Interindividual genetic variations, particularly in GST genes, are associated with heavy metal exposure in children and influence susceptibility to lead toxicity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Analytical
Megumi Kasuno, Hitomi Osuga, Katsuya Shina, Takuya Yamazaki
Summary: A flow coulometric electroanalytical system was developed to determine the Pb(II) content with high efficiency and low detection limits. Selective determination of Pb(II) was successfully achieved by adjusting the electrodeposition potential.
Article
Ecology
Colleen M. Iversen, John Latimer, Deanne J. Brice, Joanne Childs, Holly M. Vander Stel, Camille E. Defrenne, Jake Graham, Natalie A. Griffiths, Avni Malhotra, Richard J. Norby, Keith C. Oleheiser, Jana R. Phillips, Verity G. Salmon, Stephen D. Sebestyen, Xiaojuan Yang, Paul J. Hanson
Summary: Warming is found to exponentially increase plant-available ammonium and phosphate in a peatland ecosystem, with no effect from elevated CO2 levels. The dynamics of nutrient availability are influenced by peat depth and microtopography. Future predictions of peatland nutrient availability should take into account dynamic changes in nutrient acquisition by plants and microbes, as well as peat depth and microtopography.
Article
Geochemistry & Geophysics
Juan Antelo, Sarah Fiol, Ivan Carabante, Arantxa Arroyo, Juan S. Lezama-Pacheco, Natasha Josevska, Chloe Protopapa, Jurate Kumpiene
Summary: This study found that the presence of arsenic can delay the transformation of schwertmannite into more stable crystalline goethite, especially under higher arsenic loadings and more acidic conditions. Additionally, under anoxic conditions, both Fe(II) and ascorbic acid can promote the mineral transformation or reductive dissolution of schwertmannite, with arsenic reducing the catalytic effect of Fe(II) and stabilizing the schwertmannite particles.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2021)
Article
Environmental Sciences
Hermano M. Queiroz, Tiago O. Ferreira, Diego Barcellos, Gabriel N. Nobrega, Juan Antelo, Xose L. Otero, Angelo F. Bernardino
Summary: The study found that the deposition of Fe-rich tailings in the Rio Doce Estuary in Brazil significantly influenced the enrichment of phosphorus in estuarine soils. Over time, there was a significant decrease in the crystallinity of Fe oxyhydroxides in estuarine soils, while the content of low crystallinity Fe oxyhydroxides increased. These changes were associated with dissimilatory Fe reduction, leading to a significant increase in the concentration of readily available phosphorus.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Diego Aran, Erika S. Santos, Maria Manuela Abreu, Juan Antelo, Felipe Macias
Summary: The study evaluated the effectiveness of a designed Technosol in rehabilitating uranium mine tailings, showing that the rehabilitated tailings improved physicochemical properties, reduced concentrations of hazardous elements, facilitated plant cover, and decreased ecotoxicological risks and spread of hazardous elements.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Environmental Sciences
R. Lopez, J. Antelo, A. C. Silva, F. Bento, S. Fiol
Summary: This study analyzed compost samples from different sources and treated with different composting methods to investigate their chemical composition, physicochemical, and acid-base properties, revealing correlations and testing the potential value of compost as amendments. The application of compost improved soil pH, organic matter and nutrient content, and promoted seed germination and root growth in a mining area.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Geochemistry & Geophysics
Mismel Ruiz-Garcia, Mario Villalobos, Juan Antelo, Nadia Martinez-Villegas
Summary: This study investigated the sorption behavior of thallium on clay and humic acids and revealed the mechanisms of cation sorption through modeling and experimental results. The study found that the sorption behavior of thallium differed at different pH values, providing further understanding of geochemical mechanisms in contaminated soils.
APPLIED GEOCHEMISTRY
(2022)
Article
Environmental Sciences
Mitra Amini, Juan Antelo, Sarah Fiol, Rasoul Rahnemaie
Summary: This study evaluated the variations in extractable-P in soils under different redox conditions. The results showed that the solid to solution ratio and bicarbonate concentration significantly affected the extraction of phosphate, with more phosphate extracted under anoxic conditions. The effect of bicarbonate concentration was more pronounced in soil samples with higher organic carbon content. The CD-MUSIC model successfully predicted the effect of solid to solution ratio on extractable-P under both oxic and anoxic conditions.
Article
Chemistry, Multidisciplinary
Jon Petter Gustafsson, Juan Antelo
Summary: The solubility and bioavailability of arsenic in the environment are largely affected by its adsorption reactions with iron oxides. The adsorption of arsenate and phosphate on ferrihydrite suspensions was studied in batch experiments. A surface complexation model based on the CD-MUSIC concept was developed to describe the interactions. The experimental results showed that arsenate and phosphate displayed similar adsorption patterns in single-ion systems, but arsenate was preferentially adsorbed over phosphate in competitive systems. The developed model successfully described these adsorption patterns and predicted the presence of complexation compounds during adsorption.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Ana Catarina Silva, Ana Teixeira, Juan Antelo, Patricia Valderrama, Rui Oliveira, Ana Cunha, Renaud Gley, Jose Paulo Pinheiro, Sarah Fiol, Fatima Bento
Summary: This study compares the characteristics of seven composts produced from different raw materials and composting methodologies, and explores their potential in agriculture. Although the organic matter stabilization in these composts is suitable for agricultural applications, they exhibit distinct elemental and structural compositions. Additionally, different fertilizers have varying effects on lettuce growth. Some common features were identified, such as mass loss, associations between groups of elements, and correlations between carbon nanostructures and aromaticity parameters.
Article
Geochemistry & Geophysics
Carlos Lazaro, Juan Antelo, Ivan Carabante, Alba Otero-Farina, Pedro V. Verdes, Bruno Dacunha-Marinho, Sarah Fiol
Summary: This study examined the thermal transformation from schwertmannite to hematite and its effect on metal(oid) partitioning. It was found that the transformation occurred at temperatures above 400 degrees C, and the presence of chromium had little impact on the transformation temperature. As the temperature increased, the mobility of chromium decreased, and it was less outcompeted by arsenic adsorption. At temperatures above 600 degrees C, non-mobile forms strongly associated with neo-formed hematite were found. The neo-formation of hematite led to a decrease in arsenic adsorption, potentially enhancing arsenic mobility in AMD systems.
Article
Biochemistry & Molecular Biology
Ana C. C. Silva, Pedro Rocha, Dulce Geraldo, Ana Cunha, Juan Antelo, Jose P. Pinheiro, Sarah Fiol, Fatima Bento
Summary: This study demonstrates the use of Cd2+ as a reactivity probe for compost extracts of fulvic acids, humic acids, and dissolved organic matter. The HA extract showed the highest reactivity among the extracts. Furthermore, the reactivity variation was the largest for HA, followed by FA and DOM extracts. A parameter, equivalent mass of fertiliser (m(EF)), was used to calculate the compost quality and compared with uncomposted organic fertiliser. The significance of this parameter was verified through a correlation analysis between binding extent and the effect of compost application on lettuce crop growth.
