Articles | Volume 11, issue 1
https://doi.org/10.5194/soil-11-323-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/soil-11-323-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Original research article
| 
28 Apr 2025
Original research article |
| 28 Apr 2025
| 28 Apr 2025
Cr(VI) reduction, electricity production, and microbial resistance variation in paddy soil under microbial fuel cell operation
Huan Niu
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, Sichuan, China
Xia Luo
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
Peihan Li
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
Hang Qiu
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
Liyue Jiang
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
Subati Maimaitiaili
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
Minghui Wu
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
Fei Xu
Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
Heng Xu
Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
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EGUsphere, https://doi.org/10.5194/egusphere-2024-3585, https://doi.org/10.5194/egusphere-2024-3585, 2024
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Radiocaesium (137Cs) in soil poses long-term risks of entering the food chain after nuclear accidents. This study examined its binding in soils with contrasting properties, questioning the concept that clay content controls the fate of 137Cs. Instead, soil mineralogy, such as illite content, plays a larger role. Soil structure also affects its availability, as isolated soil fractions do not fully reflect intact soils. These findings improve predictions of 137Cs bioavailability in diverse soils.
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In 1995, an initial study determined that using plants and fertilizers increased degradation of petroleum in soil; the site was then abandoned. In 2010, we returned to find that initial choices of plant and fertilizer use continued to cause changes in the plant and soil microbiomes. We also found evidence for the restoration of native vegetation with certain treatments, which indicates that this could be an important tool for communities that experience soil contamination.
Hamid Reza Boostani, Ailsa G. Hardie, Mahdi Najafi-Ghiri, Ehsan Bijanzadeh, Dariush Khalili, and Esmaeil Farrokhnejad
SOIL, 10, 487–503, https://doi.org/10.5194/soil-10-487-2024, https://doi.org/10.5194/soil-10-487-2024, 2024
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Laura Sereni, Julie-Maï Paris, Isabelle Lamy, and Bertrand Guenet
SOIL, 10, 367–380, https://doi.org/10.5194/soil-10-367-2024, https://doi.org/10.5194/soil-10-367-2024, 2024
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We estimate the tendencies of copper (Cu) export in freshwater or accumulation in soils in Europe for the 21st century and highlight areas of importance for environmental monitoring. We develop a method combining computations of Cu partitioning coefficients between solid and solution phases with runoff data. The surfaces with potential for export or accumulation are roughly constant over the century, but the accumulation potential of Cu increases while leaching potential decreases for 2000–2095.
Rotem Golan, Ittai Gavrieli, Roee Katzir, Galit Sharabi, and Uri Nachshon
EGUsphere, https://doi.org/10.5194/egusphere-2024-1014, https://doi.org/10.5194/egusphere-2024-1014, 2024
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This study investigates contaminant transport and accumulation in sandy arid soils, focusing on a severe pollution event in 2017 in the Ashalim basin, Israel. It employs long-term field monitoring, lab experiments, and numerical models to understand pollutants transport dynamics. Findings reveal contaminants persist near the surface and circulate vertically. The 'surface evaporation capacitor' concept proves useful in predicting contaminant fate along the soil profile.
Raphael Rehm and Peter Fiener
SOIL, 10, 211–230, https://doi.org/10.5194/soil-10-211-2024, https://doi.org/10.5194/soil-10-211-2024, 2024
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A carbon transport model was adjusted to study the importance of water and tillage erosion processes for particular microplastic (MP) transport across a mesoscale landscape. The MP mass delivered into the stream network represented a serious amount of MP input in the same range as potential MP inputs from wastewater treatment plants. In addition, most of the MP applied to arable soils remains in the topsoil (0–20 cm) for decades. The MP sink function of soil results in a long-term MP source.
Claudia Campillo-Cora, Daniel Arenas-Lago, Manuel Arias-Estévez, and David Fernández-Calviño
SOIL, 9, 561–571, https://doi.org/10.5194/soil-9-561-2023, https://doi.org/10.5194/soil-9-561-2023, 2023
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Cr pollution is a global concern. The use of methodologies specifically related to Cr toxicity is appropriate, such as the pollution-induced community tolerance (PICT) methodology. The development of PICT was determined in 10 soils after Cr addition in the laboratory. The Cr-soluble fraction and dissolved organic carbon were the main variables determining the development of PICT (R2 = 95.6 %).
Sreejata Bandopadhyay, Marie English, Marife B. Anunciado, Mallari Starrett, Jialin Hu, José E. Liquet y González, Douglas G. Hayes, Sean M. Schaeffer, and Jennifer M. DeBruyn
SOIL, 9, 499–516, https://doi.org/10.5194/soil-9-499-2023, https://doi.org/10.5194/soil-9-499-2023, 2023
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We added organic and inorganic nitrogen amendments to two soil types in a laboratory incubation study in order to understand how that would impact biodegradable plastic mulch (BDM) decomposition. We found that nitrogen amendments, particularly urea and inorganic nitrogen, suppressed BDM degradation in both soil types. However, we found limited impact of BDM addition on soil nitrification, suggesting that overall microbial processes were not compromised due to the addition of BDMs.
Olivier Evrard, Thomas Chalaux-Clergue, Pierre-Alexis Chaboche, Yoshifumi Wakiyama, and Yves Thiry
SOIL, 9, 479–497, https://doi.org/10.5194/soil-9-479-2023, https://doi.org/10.5194/soil-9-479-2023, 2023
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Twelve years after the nuclear accident that occurred in Fukushima in March 2011, radioactive contamination remains a major concern in north-eastern Japan. The Japanese authorities completed an unprecedented decontamination programme. The central objective was to not expose local inhabitants to excessive radioactive doses. At the onset of the full reopening of the Difficult-to-Return Zone in 2023, the current review provides an update of a previous synthesis published in 2019.
Ioanna S. Panagea, Antonios Apostolakis, Antonio Berti, Jenny Bussell, Pavel Čermak, Jan Diels, Annemie Elsen, Helena Kusá, Ilaria Piccoli, Jean Poesen, Chris Stoate, Mia Tits, Zoltan Toth, and Guido Wyseure
SOIL, 8, 621–644, https://doi.org/10.5194/soil-8-621-2022, https://doi.org/10.5194/soil-8-621-2022, 2022
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The potential to reverse the negative effects caused in topsoil by inversion tillage, using alternative agricultural practices, was evaluated. Reduced and no tillage, and additions of manure/compost, improved topsoil structure and OC content. Residue retention had a positive impact on structure. We concluded that the negative effects of inversion tillage can be mitigated by reducing tillage intensity or adding organic materials, optimally combined with non-inversion tillage.
Zefang Shen, Haylee D'Agui, Lewis Walden, Mingxi Zhang, Tsoek Man Yiu, Kingsley Dixon, Paul Nevill, Adam Cross, Mohana Matangulu, Yang Hu, and Raphael A. Viscarra Rossel
SOIL, 8, 467–486, https://doi.org/10.5194/soil-8-467-2022, https://doi.org/10.5194/soil-8-467-2022, 2022
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We compared miniaturised visible and near-infrared spectrometers to a portable visible–near-infrared instrument, which is more expensive. Statistical and machine learning algorithms were used to model 29 key soil health indicators. Accuracy of the miniaturised spectrometers was comparable to the portable system. Soil spectroscopy with these tiny sensors is cost-effective and could diagnose soil health, help monitor soil rehabilitation, and deliver positive environmental and economic outcomes.
Bin Wu, Jia Li, Mingping Sheng, He Peng, Dinghua Peng, and Heng Xu
SOIL, 8, 409–419, https://doi.org/10.5194/soil-8-409-2022, https://doi.org/10.5194/soil-8-409-2022, 2022
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Cadmium (Cd) contamination in soil has severely threatened human health. In this study, we investigated the possibility of applying oyster shell and biochar to reduce Cd uptake by crops and improve soil fertility and enzyme activities in field experiments under rice–oilseed rape rotation, which provided an economical and effective pathway to achieving an in situ remediation of the Cd-contaminated farmland.
Heather C. Kerr, Karen L. Johnson, and David G. Toll
SOIL, 8, 283–295, https://doi.org/10.5194/soil-8-283-2022, https://doi.org/10.5194/soil-8-283-2022, 2022
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Adding an organo-mineral waste product from clean water treatment (WTR) is beneficial for a soil’s water retention, permeability, and strength properties. WTR added on its own significantly improves the shear strength and saturated hydraulic conductivity of soil. The co-application of WTR with compost provides the same benefits whilst also improving soil’s water retention properties, which is beneficial for environmental applications where the soil health is critical.
Zacharias Steinmetz, Paul Löffler, Silvia Eichhöfer, Jan David, Katherine Muñoz, and Gabriele E. Schaumann
SOIL, 8, 31–47, https://doi.org/10.5194/soil-8-31-2022, https://doi.org/10.5194/soil-8-31-2022, 2022
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To scrutinize the contribution of agricultural plastic covers to plastic pollution, we quantified soil-associated plastic debris (≤ 2 mm) in and around agricultural fields covered with different plastics. PP fleeces and 50 µm thick PE films did not emit significant amounts of plastic debris into soil during their 4-month use. However, thinner and perforated PE foils (40 µm) were associated with elevated PE contents of up to 35 mg kg−1. Their long-term use may thus favor plastic accumulation.
Edward J. Jones, Patrick Filippi, Rémi Wittig, Mario Fajardo, Vanessa Pino, and Alex B. McBratney
SOIL, 7, 33–46, https://doi.org/10.5194/soil-7-33-2021, https://doi.org/10.5194/soil-7-33-2021, 2021
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Soil physical health is integral to maintaining functional agro-ecosystems. A novel method of assessing soil physical condition using a smartphone app has been developed – SLAKES. In this study the SLAKES app was used to investigate aggregate stability in a mixed agricultural landscape. Cropping areas were found to have significantly poorer physical health than similar soils under pasture. Results were mapped across the landscape to identify problem areas and pinpoint remediation efforts.
Maria Catarina Paz, Mohammad Farzamian, Ana Marta Paz, Nádia Luísa Castanheira, Maria Conceição Gonçalves, and Fernando Monteiro Santos
SOIL, 6, 499–511, https://doi.org/10.5194/soil-6-499-2020, https://doi.org/10.5194/soil-6-499-2020, 2020
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In this study electromagnetic induction (EMI) surveys and soil sampling were repeated over time to monitor soil salinity dynamics in an important agricultural area that faces risk of soil salinization. EMI data were converted to electromagnetic conductivity imaging through a mathematical inversion algorithm and converted to 2-D soil salinity maps until a depth of 1.35 m through a regional calibration. This is a non-invasive and cost-effective methodology that can be employed over large areas.
Olivier Evrard, J. Patrick Laceby, and Atsushi Nakao
SOIL, 5, 333–350, https://doi.org/10.5194/soil-5-333-2019, https://doi.org/10.5194/soil-5-333-2019, 2019
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The Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in March 2011 resulted in the contamination of Japanese landscapes with radioactive fallout. The objective of this review is to provide an overview of the decontamination strategies and their potential effectiveness in Japan. Overall, we believe it is important to synthesise the remediation lessons learnt following the FDNPP nuclear accident, which could be fundamental if radioactive fallout occurred somewhere on Earth in the future.
Matthias Hunziker, Olafur Arnalds, and Nikolaus J. Kuhn
SOIL, 5, 223–238, https://doi.org/10.5194/soil-5-223-2019, https://doi.org/10.5194/soil-5-223-2019, 2019
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Afforestation on severely degraded volcanic soils/landscapes is an important process concerning ecological restoration in Iceland. These landscapes have a high potential to act as carbon sinks. We tested the soil (0–30 cm) of different stages of afforested (mountain birch) landscapes and analysed the quantity and quality of the soil organic carbon. There is an increase in the total SOC stock during the encroachment. The increase is mostly because of POM SOC. Such soils demand SOC quality tests.
Belinda C. Martin, Suman J. George, Charles A. Price, Esmaeil Shahsavari, Andrew S. Ball, Mark Tibbett, and Megan H. Ryan
SOIL, 2, 487–498, https://doi.org/10.5194/soil-2-487-2016, https://doi.org/10.5194/soil-2-487-2016, 2016
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The aim of this paper was to determine the impact of citrate and malonate on microbial activity and community structure in uncontaminated and diesel-contaminated soil. The results suggest that these carboxylates can stimulate microbial activity and alter microbial community structure but appear to have a minimal effect on enhancing degradation of diesel. However, our results suggest that carboxylates may have an important role in shaping microbial communities even in contaminated soils.
E. A. Varouchakis, G. V. Giannakis, M. A. Lilli, E. Ioannidou, N. P. Nikolaidis, and G. P. Karatzas
SOIL, 2, 1–11, https://doi.org/10.5194/soil-2-1-2016, https://doi.org/10.5194/soil-2-1-2016, 2016
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A statistical methodology is proposed to predict the probability of presence or absence of erosion in a river section considering locally spatial correlated independent variables.
The proposed tool is easy to use and accurate and can be applied to any region and river. It requires information from easy-to-determine geomorphological and/or hydrological variables to provide the vulnerable locations. This tool could be used to assist in managing erosion and flooding events.
Y. Yuan, Y. Jiang, E. V. Taguas, E. G. Mbonimpa, and W. Hu
SOIL, 1, 595–602, https://doi.org/10.5194/soil-1-595-2015, https://doi.org/10.5194/soil-1-595-2015, 2015
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A major environmental concern in the Commonwealth of Puerto Rico is increased sediment load to water reservoirs, to estuaries, and finally to coral reef areas. Our research found that sediment loss was mainly caused by interactions of development, heavy rainfall events, and steep mountainous slopes. These results improve our understanding of sediment loss resulting from changes in land use/cover, and will allow stakeholders to make more informed decisions about future land use planning.
M. J. Riding, F. L. Martin, K. C. Jones, and K. T. Semple
SOIL, 1, 1–21, https://doi.org/10.5194/soil-1-1-2015, https://doi.org/10.5194/soil-1-1-2015, 2015
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The behaviour of carbon nanomaterials (CNMs) in soils is highly complex and dynamic. As a result, assessments of the possible risks CNMs pose within soil should be conducted on a case-by-case basis. Further work to assess the long-term stability and toxicity of CNM-sorbed contaminants, as well as the toxicity of CNMs themselves, is required to determine if their sorptive abilities can be applied to remedy environmental issues such as land contamination.
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Short summary
We use the soil microbial fuel cell (SMFC) to eliminate Cr(VI) from paddy soil and for metal tolerance analysis, finding 93.76 % of Cr(VI) elimination, 0.97 V power output, and heavy-metal resistance gene elevation. The enrichment of exoelectrogens, Cr(VI) reducers, and tolerators contributed to SMFC performance. Bio-physical adsorption and electrochemical–microbial reduction simultaneously reduced Cr(VI).
We use the soil microbial fuel cell (SMFC) to eliminate Cr(VI) from paddy soil and for metal...
