Article
Soil Science
Thadeu Rodrigues de Melo, Alex Figueiredo, Joao Tavares Filho
Summary: An increase in organic matter content can stabilize macmaggregates in soils, but it can also inhibit the flocculation of suspended clay. When water-stable macroaggregates break down, the released clay may have imbalanced charges, making flocculation unlikely.
SOIL & TILLAGE RESEARCH
(2021)
Article
Engineering, Civil
Ailsa G. Hardie, Ncumisa Madubela, Catherine E. Clarke, Eugene L. Lategan
Summary: The study revealed that powdered laundry detergent greywater has a more detrimental effect on soil, leading to humus removal and decreased hydraulic conductivity. Sandy soils and soils derived from granite were more susceptible to these effects, while chromic soils were less affected.
JOURNAL OF HYDROLOGY
(2021)
Article
Engineering, Environmental
Tianyu Sun, Liping Yang, Jiebin Tang, Ningbo Li, Jialin Chen, Anqi Shen, Yang Shao, Yafang Zhang, Hong Liu, Guobin Xue
Summary: Mesoporous structure in lamellar ion-selective membrane can increase transmembrane ionic transport without sacrificing selectivity, providing new opportunities for addressing the water-energy nexus challenge.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Visuta Engkagul, Chris Rader, Nanetta Pon, Stuart J. Rowan, Christoph Weder
Summary: By combining a cationic polymer with negatively charged, carboxylated CNCs provided as a sodium salt, nanocomposites with a high CNC content can be prepared, resulting in significant reinforcement without CNC aggregation.
Article
Environmental Sciences
Anh Q. Nguyen, Anh T. Q. Nguyen, Ngoc T. M. Nguyen, Anh D. Nguyen, Hoi V. Bui, Nguyen-Thanh Lan, Minh N. Nguyen
Summary: This study investigated the sorption of antibiotics on soil minerals and their cotransport in concentrated salt solutions. The results showed that the sorption capacities of soil clays for oxytetracycline decreased with higher salt concentrations, and seawater intensified the release of the sorbed antibiotics while favoring their coaggregation with soil clays.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Trang T. T. Vu, Nguyen T. T. Nguyen, Linh H. Duong, Anh D. Nguyen, Lan Nguyen-Thanh, Stefan Dultz, Minh N. Nguyen
Summary: This study aims to test the removal of polystyrene microplastics (PSMPs) from aqueous solution by using the cationic polyelectrolyte polydiallyldimethylammonium chloride (polyDADMAC) to stimulate coaggregation of PSMPs and clay minerals with different shape and surface charge properties. The addition of polyDADMAC neutralizes the negative surface charge of clay minerals and PSMPs, allowing their coaggregation. The efficiency to remove PSMPs from aqueous solution follows the order: palygorskite > montmorillonite > kaolinite.
APPLIED CLAY SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Yingcan Zhu, Aram Ali, John McLean Bennett, Chris Guppy, David McKenzie
Summary: This study found that high concentration polyacrylamide (PAM) solutions can stabilize soil structure, especially for dispersive aggregates that are theoretically dislodged by ripping. The efficacy of PAM depends on its concentration, viscosity, soil type, and mechanical force. Spraying PAM during tillage shows potential in prolonging the benefits of subsoil decompaction.
Article
Multidisciplinary Sciences
Fernanda Costa da Silva Maciel, Sandro Lemos Machado, Antonio Fernando de Souza Queiroz, Fernando Antonio Leite Vieira Lima
Summary: Field bio-remediation techniques (FBRT) can be a low cost method to avoid removing topsoil rich in organic matter and biodiversity. Studies have shown that using native microorganisms in FBRT is preferable, with identified bacteria and fungi species capable of degrading pollutants in petroleum produced water (PPW).
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Haruki Sato, Syed A. Abd Rahman, Yota Yamada, Hiroyuki Ishii, Hiroyuki Yoshida
Summary: The authors employed angle-resolved low-energy inverse photoelectron spectroscopy to reveal the LUMO band structure of pentacene and proposed an improved polaron model to explain the phenomenon of bandwidth reduction. The results demonstrate that electron mobility in high-mobility organic semiconductors is limited by polaron formation.
Article
Soil Science
Gizachew Tarekegn Getahun, Ararso Etana, Lars Juhl Munkholm, Holger Kirchmann
Summary: The experiment showed that lime application can significantly reduce clay dispersion, improve soil wet aggregate stability, and affect the release of dissolved reactive phosphorus. pH within the range of 7.5-7.8 has the greatest impact on soil properties, with wet aggregate stability declining beyond this range. Further research is needed to understand the underlying processes in more detail and draw more robust conclusions.
SOIL & TILLAGE RESEARCH
(2021)
Article
Soil Science
Awedat Musbah Awedat, Yingcan Zhu, John McLean Bennett, Steven R. Raine
Summary: This study investigated the effect of different sodium adsorption ratio (SAR) solutions on soil porosity, pore size, and saturated hydraulic conductivity (Ksat), showing that distilled water application can reduce Ksat, especially for soils initially treated with sodic water. The use of distilled water significantly decreased the proportion of macro and mesopores, while increasing the proportion of micropores, particularly for soil columns initially treated with high SAR solutions.
Article
Microbiology
Anna Yudina, Olga Ovchinnikova, Vladimir Cheptsov, Dmitry Fomin
Summary: Soil microbial and enzyme activities are closely related to the spatial variability of soil environmental conditions at the microscale. The origin and localization of enzymes are often overlooked when evaluating specific soil functions based on measured activity. The impact on soil solids significantly affected enzyme activity, depending on the enzyme type and soil land use. The highest proportions of certain enzyme activities were determined at specific energy ranges and were associated with the soil structure and land use type.
Article
Chemistry, Physical
Azadeh Sadri, Keith F. White, Ian D. Potter, Michael J. Angove
Summary: Considerable quantities of pyrophosphate and orthophosphate are introduced to soils as fertilizers and fire retardants. The sorption behavior of pyrophosphates in soils has received less attention compared to orthophosphates. This study investigated the sorption of pyrophosphate and orthophosphate by boehmite and kaolinite at different temperatures and pH levels, and found that pyrophosphate sorption was higher in lower pH and increased with temperature for kaolinite.
APPLIED CLAY SCIENCE
(2023)
Article
Engineering, Chemical
Xiaomiao Zang, Zhiming Yu, Wenbin Jiang, Xiuxian Song, Xihua Cao
Summary: The study explored the dosage-effectiveness of modified clay (MC) in removing red tide organisms. The results showed that the effectiveness of MC for microalgae removal first increased and then decreased due to self-flocculation. A mathematical model based on the extended Langmuir model was able to simulate the dosage-effectiveness of MC and deduce the quantitative relationship between MC dosage and self-flocculation. These findings will contribute to the flocculation theory of MC application and provide guidance for efficient red tide control.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Soil Science
F. Javaheri, I Esfandiarpour-Boroujeni, M. H. Farpoor, D. Holthusen, R. D. Stewart
Summary: Saline-sodic soils are prone to erosion under the dispersive effect of sodium, but rheological measurements can help quantify inter-particle forces. Factors like soil texture, clay minerals, gypsum, and CCE influence microstructural stiffness and stability. High levels of smectite, palygorskite, gypsum, and CCE improve soil conditions, while water content and sodium concentration negatively impact viscoelastic behavior.
SOIL & TILLAGE RESEARCH
(2022)