Results 71 to 80 of about 7,633 (210)

Development of the integrated model of ecologically safe utilization of phosphogypsum in environmental protection technologies [PDF]

, 2017
У роботі була здійснена формалізація методологічного підходу щодо процесу формування концепції поводження з фосфогіпсом на принципах екологічної безпеки.
Черниш, Єлизавета Юріївна
core   +1 more source

Strategies for Developing Superhydrophobic Surfaces on Cement‐Based Materials Using Stearic Acid: A Review

Engineering Reports, Volume 7, Issue 7, July 2025.
The paper critically examines advanced strategies for constructing superhydrophobic concrete using stearic acid, particularly through external coating and internal mixing. The advantages and limitations of both approaches are summarized. ABSTRACT This paper provides a comprehensive review of recent advancements in the use of stearic acid to develop ...
Qing Wang, Yunfeng Li, Xu Zheng, Rui Zhang, Ning Wang   +4 more
wiley   +1 more source

Treatment and Purification of Phosphogypsum [PDF]

Egyptian Journal of Chemistry, 2019
Abstract Production of phosphoric acid and phosphate fertilizers are still generating pollution problem. The (PG) wasted phosphogypsum by product created through the manufacture consists of many valuable materials to be recovered. For each ton phosphoric acid produced, about 4 – 5 tons (PG) waste was generated.
Shadia Hanem El Rafie, Hamdy El Ghetany, Rania Abuel Aila, Marwa GABER   +3 more
openaire   +1 more source

Influence of Waste Glass Powder as a Supplementary Cementitious Material (SCM) on the Mechanical Properties, Expansion, Environmental Impact, and Microstructure of Cementitious Mortar

Engineering Reports, Volume 7, Issue 6, June 2025.
Incorporating waste glass powder (GP) into cementitious mortars significantly reduces environmental impact, with a 35% decrease in embodied carbon and energy at 40% GP replacement. This study shows that GP enhances long‐term mechanical strength, cuts autoclave expansion by 50%, and refines microstructure through denser C‐S‐H formation.
Mahdi Bameri, Mohammad Mohammadhasani, Alireza Khaloo, Ashraf Ashour, Morteza NikKhah   +4 more
wiley   +1 more source

Wetting-drying effect on the strength and microstructure of cement-phosphogypsum stabilized soils

Journal of Rock Mechanics and Geotechnical Engineering
Phosphogypsum has often been used as an effective and environmentally friendly binder for partial replacement of cement, improving the engineering properties of slurries with high water content.
Lingling Zeng, Xia Bian, Jiaxing Weng, Tao Zhang   +3 more
doaj   +1 more source

Sustainable Pathways for the Synthesis of Calcium Sulfate Hemihydrate

Angewandte Chemie International Edition, Volume 64, Issue 20, May 12, 2025.
Calcium sulfate hemihydrate (bassanite) plays a key role in construction as a hydraulic binder. Due to its instability in water, industrial production primarily relies on thermal dehydration of gypsum. This review examines alternative, potentially more sustainable methods for the synthesis of bassanite, including gypsum conversion at lower temperatures
Selina Reigl, Alexander E. S. Van Driessche, Tomasz M. Stawski, Sebastian Koltzenburg, Werner Kunz, Matthias Kellermeier   +5 more
wiley   +1 more source

Effect of Phosphogypsum Characteristics on the Properties of Phosphogypsum-Based Binders

Journal of Composites Science
Phosphogypsum, a byproduct of orthophosphoric acid production, is one of the large-tonnage wastes. Since phosphogypsum mainly consists of CaSO4 2H2O, it can be considered as an alternative gypsum-bearing raw material in the production of gypsum binders.
Nataliya Alfimova, Kseniya Levickaya, Il’ya Buhtiyarov, Ivan Nikulin, Marina Kozhukhova, Valeria Strokova   +5 more
openaire   +1 more source

Sulfur fertilization sources for multisite sugarcane (Saccharum spp.) fields in Brazil

Agronomy Journal, Volume 117, Issue 3, May/June 2025.
Abstract Sulfur (S) deficiency in soils has become a common problem in Brazilian sugarcane (Saccharum spp.) fields due to high nutrient extraction by the crop without adequate replacement. Five field trials were conducted in Brazil over two consecutive ratoon cycles to evaluate S fertilizer sources and application rates and their residual effects on ...
Rafael Otto, Lucas Miguel Altarugio, Victor Xavier Rizzo, Estêvão Vicari Mellis, Sarah Tenelli, Johnny Rodrigues Soares, Sarah Mello Leite Moretti   +6 more
wiley   +1 more source

Impact of amendments on the physical properties of soil under tropical long-term no till conditions [PDF]

, 2016
Tropical regions have been considered the world's primary agricultural frontier; however, some physico-chemical deficiencies, such as low soil organic matter content, poor soil structure, high erodibility, soil acidity, and aluminum toxicity, have ...
A Klute, A Leys, A Marsili, AJ Franzluebbers, Antonio C. A. Carmeis Filho, AP Edwards, B van Raij, B van Raij, C Briedis, C Castro Filho, CA Tormena, CAC Crusciol, Carlos A. C. Crusciol, CH Roth, D Baldock, EF Caires, EF Caires, EF Caires, EF Caires, EJ Kiehl, ET Elliott, F Dube, FJ Garbuio, FP Valzano, G Ogner, GR Blake, GSA Castro, H Cantarella, J Lehmann, J Rühlmann, J Six, JA Alcarde, JC Corrêa, JM Reichert, JM Tisdall, Jorge Paz-Ferreiro, JP Mitchell, JSC Mbagwu, Juliano C. Calonego, K Denef, KA Smith, KM Hati, M Manna, M Muneer, M Pagliai, MCS Carvalho, MD Bongiovanni, MH McCallum, MPW Farina, MR Martins, NK Fageria, NK Fageria, O Traoré, R Lal, RA Garcia, RJ Haynes, S Abiven, Sacha J. Mooney, T Chevallier, Tiara M. Guimarães, WD Kemper   +60 more
core   +4 more sources

Phosphogypsum recycling into inorganic dyes [PDF]

E3S Web of Conferences, 2019
Currently, chemical wastes recycling into valuable secondary products poses a pressing challenge. During phosphoric acid production from apatite raw materials, large-tonnage phosphogypsum wastes are formed, resulting in ecosystem dysfunction. Besides, such wastes occupy significant production areas.
Shabelskaya Nina, Medvedev Roman, Gaidukova Yuliya, Astachova Marina   +3 more
openaire   +2 more sources