A new procedure for electroplating wastewater treatment using waste by-product (ferrous-sulfate) and waste (wood fly ash) is presented. Ferrous-sulfate was employed for Cr(VI) reduction whereas neutralization and heavy metal removal from electroplating wastewaters was performed using wood fly ash. Heavy metal removal efficiency varied from 97.5% for Cu to 99.973% for Zn. Satisfying results can be achieved already at the pH 8. The method is suitable for the purposes of wastewater treatment and disposal in compliance with environmental laws. Furthermore, it is technically simple, cost-efficient and requires less space compared to the classical methodology. According to the composition of its water extractable fraction remaining waste ash could be safely deposited on domestic waste repositories.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1081/ese-200026305 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Microstructural Analysis and Radiological Characterization of Alkali-Activated Materials Based on Aluminosilicate Waste and Metakaolin.
Gels
January 2025
Department of Materials, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia.
The formation of an aluminosilicate gel structure made of alkali-activated materials (AAMs) was conducted through an alkali-activation reaction of the solid precursors (fly ash, metakaolin, and wood ash). Fly and wood ash are by-products of the burning process of coal and wood, respectively. Alkali-activated materials of aluminosilicate origin, made from the different ashes, fly and wood, are very attractive research targets and can be applied in various technological fields due to their thermal stability, resistance to thermal shock, high porosity, high sustainability, and finally, low energy loss during production.
View Article and Find Full Text PDFEffect of Strengthening Mechanism of Alkali Curing on Mechanical Properties of Fly Ash Lightweight Aggregates and Its Concrete.
Materials (Basel)
December 2024
Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou 221116, China.
The low hydration degree of fly ash in Fly Ash Unburned Lightweight Aggregate (FULA) is not conducive to the development of the mechanical properties of lightweight aggregates and their concrete. In this paper, FULA was immersed in an alkaline solution with the purpose of improving the mechanical properties of FULA and its concrete. Firstly, FULA was prepared using fly ash as the main raw material.
View Article and Find Full Text PDFAutoregulation of the glial gene reversed polarity in Drosophila.
Sci Rep
January 2025
Department of Biology, The University of Mississippi, University, MS, 38677, USA.
During development, cells of the nervous system begin as unspecified precursors and proceed along one of two developmental paths to become either neurons or glia. Work in the fruit fly Drosophila melanogaster has established the role of the transcription factor Glial cells missing (Gcm) in directing neuronal precursor cells to assume a glial cell fate. Gcm acts on many target genes, one of which is reversed polarity (repo).
View Article and Find Full Text PDFProperties characterization and microstructural analysis of alkali-activated solid waste-based materials with sawdust and wastewater integration.
PLoS One
January 2025
Hebei Yingsheng New Material Technology Co., Ltd., Shijiazhuang, China.
Construction materials are significantly exposed to ecological hazards due to the presence of hazardous chemical constituents found in industrial and agricultural solid wastes. This study aims to investigate the use of sawdust particles (SDPs) and sawdust wastewater (SDW) in alkali-activated composites (AACs) made from a mixture of different silicon-aluminum-based solid wastes (slag powder-SP, red mud-RM, fly ash-FA, and carbide slag-CS). The study examines the impact of SDP content, treated duration of SDPs, and SDW content on both fresh and hardened properties of the AACs, including electrical conductivity, fluidity, density, flexural and compressive strengths, and drying shrinkage.
View Article and Find Full Text PDFOccupational anaphylaxis: A Position Paper of the German Society of Allergology and Clinical Immunology (DGAKI).
Allergol Select
November 2024
Department of Dermatology and Allergy Biederstein, School of Medicine and Health, Technical University of Munich TUM).
Background: Anaphylaxis is a systemic allergic reaction that is potentially life-threatening. Occupational anaphylaxis is an anaphylaxis that occurs in an occupational context. In this position paper, we propose diagnostic criteria for occupational anaphylaxis and provide an overview of the current state of knowledge in terms of prevalence, triggers, prevention, and management.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!