Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
This paper presents a new modification of the nanostructure of CaSO·2HO crystals containing nanopores. This nanoporous structure was achieved in phosphogypsum samples that were modified by sodium carbonate and alum. The effects of sodium carbonate and alum on the properties of phosphogypsum were studied. X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods were used to explore the micro-mechanism of the composite system. Subsequently, molecular dynamics simulations were used to study the nanopore structures of the modified CaSO·2HO. The results show that the addition of sodium carbonate and alum reduced the absolute dry density by 23.1% compared with the original phosphogypsum sample, with a bending strength of 2.1 MPa and compressive strength of 7.5 MPa. In addition, new hydration products, sodium sulfate and sodium aluminum sulfate, were formed in the sample doped with sodium carbonate and alum. A new nanostructure of CaSO·2HO crystal containing nanopores was formed. Molecular simulations show that the hydration products were responsible for the surface nanopore formation, which was the main factor leading to an increase in mechanical strength. The presented nanopore structure yields lightweight and high strength properties in the modified phosphogypsum.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8510265 | PMC |
| http://dx.doi.org/10.3390/ma14195830 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An atomic surface of an aluminum alloy induced by novel green chemical mechanical polishing using hybrid rare earth abrasives and mechanisms unraveled.
Nanoscale
August 2025
Guizhou Aerospace Linquan Motor Co., Ltd, Guiyang 550081, China.
An aluminum (Al) alloy is a soft, plastic-like metal that is prone to embedding abrasives, scratches, corrosion pits, and deformation. Achieving an atomically smooth surface on an Al alloy presents a significant challenge. This study introduces a novel green chemical mechanical polishing (CMP) technique using hydrogen peroxide, tyrosine, sodium carbonate, and hybrid abrasives composed of silica, yttria, and ceria.
View Article and Find Full Text PDFRisk assessment and multi-criteria ranking of groundwater contamination by multiple metal(oid)s in the Rio das Velhas Basin.
Environ Sci Pollut Res Int
August 2025
Federal University of Minas Gerais: Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
This study assessed groundwater quality in the Rio das Velhas Basin (Minas Gerais, Brazil)-a mining‑influenced watershed under strong anthropogenic pressure-using data from 35 observation wells monitored between 2004 and 2023. A total of 26 parameters were evaluated, including metal(oid)s (aluminum, arsenic, barium, chloride, fluoride, nitrite, nitrate, sulfur, cadmium, lead, copper, chromium, iron, manganese, mercury, nickel, selenium, sodium, zinc) and microbiological indicators (thermotolerant coliforms and Escherichia coli). Water quality was assessed through the groundwater quality index (GWQI), carcinogenic and non-carcinogenic risk analyses, and irrigation-related risks (sodium adsorption ratio, SAR; residual sodium carbonate, RSC).
View Article and Find Full Text PDFEffect of pectin modification based on the fermentation by lactic acid bacteria on drying characteristics and texture of apples.
Carbohydr Polym
November 2025
Institute of Food and Processing, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China.
This study combined the modification of pectin by fermentation and the drying characteristics of fermented apples to evaluate the effect of fermentation pre-treatment on the formation of dried apple texture. The results showed that lactic acid bacteria altered the pectin content of water-soluble pectin, simultaneously, P. ethanolidurans significantly increased the esterification degree of sodium carbonate-soluble pectin (55.
View Article and Find Full Text PDFSustainable production and characterization of cellulose nanofibers from sweet potato residues via sodium percarbonate pre-treatment.
Int J Biol Macromol
September 2025
School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland. Electronic address:
To valorize sweet potato residues into high-performance cellulose nanofibers (CNFs), this study developed an innovative eco-friendly pre-treatment strategy. Sodium carbonate (SC) and sodium percarbonate (SP) were used as sustainable alternatives to conventional alkali-based protocols. SP exhibited greater advantages in both cellulose extraction and CNFs performance than SC.
View Article and Find Full Text PDFFlue gas induced lithium carbonate crystallization from industrial black mass.
J Hazard Mater
September 2025
Particle Engineering Centre, Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway. Electronic address:
Spent lithium-ion batteries (LIBs) are a valuable secondary source of lithium, but conventional recovery methods using sodium carbonate (NaCO) often result in sodium contamination, limiting the purity of recovered lithium carbonate (LiCO). The present study introduces a novel process for lithium recovery from industrial black mass (BM) using a CO blend, which addresses the issue of sodium contamination. Lithium was selectively extracted from an industrial black mass through water leaching.
View Article and Find Full Text PDF