Article
Soil Science
Nicolai Koebernick, Robert Mikutta, Klaus Kaiser, Anika Klotzbuecher, Thimo Klotzbuecher
Summary: Phytoliths, as an important silicon source for plants, may have reduced solubility and stability under alternating redox conditions due to the accumulation of iron and carbon at their surfaces, leading to decreased silicon availability to plants. This study suggests that interactions of phytoliths with soil solution constituents play a key role in determining their dissolution kinetics and surface properties.
Article
Environmental Sciences
Yanping Ji, Jiang Xu, Lizhong Zhu
Summary: The authors measured the redox potential of simulated laterites under various soil conditions and quantified the impacts of soil pH, organic carbon, and iron speciation on iron activity. By integrating these factors into the formula, they significantly improved the accuracy of Eh predictions. The developed model was validated with natural laterites and showed promising results for predicting the redox behavior of contaminants in soils.
Review
Agronomy
Petra Marschner
Summary: Submerged soils play a vital role in global biogeochemical cycles, with processes strongly influenced by oxygen availability (redox potential). These soils often have higher organic matter content than aerobic soils, and plants have complex effects on wetland soil processes, both beneficial and detrimental.
Article
Multidisciplinary Sciences
D. Gashu, P. C. Nalivata, T. Amede, E. L. Ander, E. H. Bailey, L. Botoman, C. Chagumaira, S. Gameda, S. M. Haefele, K. Hailu, E. J. M. Joy, A. A. Kalimbira, D. B. Kumssa, R. M. Lark, I. S. Ligowe, S. P. McGrath, A. E. Milne, A. W. Mossa, M. Munthali, E. K. Towett, M. G. Walsh, L. Wilson, S. D. Young, M. R. Broadley
Summary: Micronutrient deficiencies are widespread among people in sub-Saharan Africa due to limited access to micronutrient-rich food sources. Research in Ethiopia and Malawi shows geographical variation in the micronutrient composition of staple cereal grains, influenced by soil and environmental factors. Understanding these geographical effects is crucial for designing interventions to alleviate micronutrient deficiencies.
Article
Environmental Sciences
Diego Barcellos, Sebastian S. K. Jensen, Angelo F. Bernardino, Fabricio A. Gabriel, Tiago O. Ferreira, Cintia O. Quintana
Summary: The study found that the polychaeta Laeonereis sp. had an impact on the oxygen and metal fluxes at the sediment-water interface post the mining tailings spill, especially at high densities. The higher worm density amplified the oxygen flux, sediment uptake of Al and Mn, and Fe oxidation, but had minimal effects on other metals.
MARINE POLLUTION BULLETIN
(2021)
Article
Multidisciplinary Sciences
Gongde Chen, Aaron Thompson, Christopher A. Gorski
Summary: Nanoparticles often show different redox reactivities depending on their sizes. This study found that the interfacial redox reaction rates of nanoparticles with different sizes can be described by a single linear free-energy relationship (LFER) when considering size-dependent reactive surface areas and thermodynamic properties. The study used nano-particulate hematite suspensions to demonstrate how smaller particles with larger surface areas but more positive reduction potentials have lower nitrobenzene reduction rates.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Review
Food Science & Technology
Guanwen Liu, Junjun Li, Bing Pang, Yinghui Li, Fengqin Xu, Ning Liao, Dongyan Shao, Chunmei Jiang, Junling Shi
Summary: Obesity is a significant health issue that is related to iron dyshomeostasis. Selenium supplementation may play a role in alleviating obesity-related iron dyshomeostasis.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
Article
Environmental Sciences
Hermano M. Queiroz, Samantha C. Ying, Macon Abernathy, Diego Barcellos, Fabricio A. Gabriel, Xose L. Otero, Gabriel N. Nobrega, Angelo F. Bernardino, Tiago O. Ferreira
Summary: The study assessed manganese contamination in the Rio Doce estuary after the collapse of the world's largest mine tailings dam, finding a significant increase in dissolved manganese and decrease in total manganese content in soils over the following two years. The dynamic interaction between Fe and Mn in the impacted estuary poses a high risk to estuarine biota and human health, indicating a possible chronic contamination scenario.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Soil Science
Vinicius Augusto Filla, Anderson Prates Coelho, Adrien Dorvalino Ferroni, Angelica Santos Rabelo de Souza Bahia, Jose Marques
Summary: The study showed that using magnetic susceptibility can achieve highly accurate estimation of soil clay content, especially improving estimation precision for soil samples with clay content below 200 g/kg.
Article
Geochemistry & Geophysics
Chengshuai Liu, Michael S. Massey, Drew E. Latta, Yafei Xia, Fangbai Li, Ting Gao, Jian Hua
Summary: This study elucidates the reaction processes of aqueous Fe(II) with ferromanganese nodules and discusses its impact on the exchange of Fe atoms and the formation of magnetite in the nodules. The observed Fe(II)-induced recrystallization of nodules is expected to play a significant role in influencing the geochemical behavior of elements in nodule-enriched soils.
Article
Agronomy
Tuomas J. Mattila
Summary: Redox potential is a promising soil health indicator that correlates well with microbial activity, soil structure, and texture. Low redox state is associated with high microbial activity, indicating the availability of bioavailable organic matter. However, further research is needed to understand the shared mechanisms linking structure, redox, and microbial activity.
Article
Engineering, Environmental
Lin Liu, Rui-Lin Shen, Zhong-Qiu Zhao, Long-Jun Ding, Hui-Ling Cui, Gang Li, Yu-Ping Yang, Gui-Lan Duan, Yong-Guan Zhu
Summary: In this study, the specific effects of different nitrogen fertilizers on arsenic (As) mobility after straw incorporation and the interactions among iron (Fe), carbon (C), nitrogen (N), and As were investigated. The results showed that both KNO3 and NH4Cl addition can inhibit the As mobilization induced by straw incorporation, but through different mechanisms. The addition of KNO3 reduced As concentration in porewater by restraining Fe reduction and enhancing Fe oxidation, while high-dose NH4Cl addition decreased porewater pH and reduced As concentration.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Chaolei Yuan, Shuo Na, Fangbai Li, Hangwei Hu
Summary: The study found that sulfate and iron oxides have significant impacts on the microbial community in paddy soil, particularly reducing the abundance and diversity of bacteria after drying. This highlights the potential hazardous effects of these soil amendments on bacteria, emphasizing the importance of considering their implications before application.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Abby E. Evans, Matt A. Limmer, Angelia L. Seyfferth
Summary: Rice paddies are vulnerable to contaminants such as arsenic and cadmium, with soil redox potential playing a key role. This study investigates the use of IRIS film technology as passive samplers to monitor soil redox potential in rice paddies. Results suggest that IRIS films are a cost-effective tool for rice farmers to manage water effectively, with potential implementation strategies for the future.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Zhao-Feng Yuan, Tong-Yao Pu, Chen -Yu Jin, Wei-Jia Feng, Jia-Yue Wang, Williamson Gustave, Jonathan Bridge, Yi-Li Cheng, Xian-Jin Tang, Yong-Guan Zhu, Zheng Chen
Summary: This study presents a method of extracting arsenic from contaminated soil using plastic tubes, which are covered with iron oxides that can easily be separated from the soil, providing a low-cost and sustainable soil remediation technique.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Yu Zeng, Guodong Fang, Qinglong Fu, Dionysios D. Dionysiou, Xiaolei Wang, Juan Gao, Dongmei Zhou, Yujun Wang
Summary: This study investigated the photochemical processes in paddy water, identifying DOM-D-3*, O-1(2), and OH· as the main reactive intermediates with quantified quantum yields and steady-state concentrations. The findings demonstrated that DOM properties and nitrite concentration were key factors influencing RIs generation, and RIs significantly enhanced arsenite oxidation in paddy water. The study provides new insights into arsenite abiotic transformation pathways in paddy soil and water.
Article
Engineering, Environmental
Yu Zeng, Guodong Fang, Qinglong Fu, Fei Peng, Xinghao Wang, Dionysios D. Dionysiou, Jianbo Guo, Juan Gao, Dongmei Zhou, Yujun Wang
Summary: This study investigated the effects of agricultural amendments on the photochemistry of paddy water, revealing that these amendments significantly influenced the photogenerated reactive intermediates and the degradation rate of organic contaminants. Additionally, the amendments led to the formation of more toxic and stable products.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Ning Chen, Yu Zeng, Tai Li, Peixin Cui, Dionysios D. Dionysiou, Xiaolei Wang, Cun Liu, Guodong Fang, Chengcheng Ding, Yuan Zhao, Juan Gao, Yujun Wang, Dongmei Zhou
Summary: Phosphorus and cobalt co-doped C3N5 (Co-xP-C3N5) has been developed for peroxymonosulfate (PMS) activation and 2,4,4'-trichlorobiphenyl (PCB28) degradation. Phosphorus doping induces the formation of Co-P and Co-N-P species, which increase the content of coordinated Co and improve catalytic performance. This finding provides a new strategy for enhancing the performance of single atom-based catalysts.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Yu Zeng, Tai Li, Yingzhi Ding, Guodong Fang, Xiaolei Wang, Bo Ye, Liqiang Ge, Juan Gao, Yujun Wang, Dongmei Zhou
Summary: This research developed a convenient method for mass production of nZVI/BC and successfully applied it to the remediation of organic polluted soil on an in-situ pilot scale. The application of nZVI/BC-PS significantly increased the degradation rates of contaminants and inhibited soil enzyme activities, but the inhibitory effects disappeared with prolonged remediation time.
