A decision support framework for safe and sustainable by-design practices promoting circularity in waste-to-energy supply chains

Sustainable Production and Consumption, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Impact of Alkali-Activated Tannery Sludge-Derived Geopolymer Gel on Cement Properties: Workability, Hydration Process, and Compressive Strength

Gels, Journal Year: 2025, Volume and Issue: 11(5), P. 339 - 339

Published: May 1, 2025

The utilization of tannery sludge (TS) in construction materials not only effectively reduces pollution and resource consumption associated with waste disposal, but also promotes low carbon transformation the building sector, further advancing sustainable development green construction. This study aims to investigate impact sludge-based geopolymer gel on cementitious material performance, revealing evolution mechanisms fluidity, setting time, hydration process, compressive strength under coupled effects alkali activation, thereby providing a reusable technical pathway address challenges similar special solid wastes. A series alkali-activated composite (AACC) were prepared by partially substituting cement alkaline activators, TS, fly ash (FA), through adjustments TS–FA ratios equivalent (AE) variations. workability, AACC systematically investigated. experimental results indicated that as TS content increased from 0% 100%, fluidity fresh decreased 147 mm 87 mm, while initial final times exhibited an exponential upward trend. incorporation was found inhibit hydration, though this adverse effect could be mitigated activation. Notably, 20–40% dosages (SD) enhanced early-age strength. Specifically, group at 3 d age 24.3 MPa, 20% 25.9 MPa (an increase rate 6.58%), 40% 24.5 0.82%), whereas excessive additions resulted reduction products diminished later stage development. Furthermore, investigation into AE revealed maximum (37.4 MPa) achieved 9% AE. These findings provide critical data support for realizing effective industrial

Language: Английский

Monetizing and selection of sustainable tannery sludge-to-energy technology using a simulation-based novel integrated MCDM model along with life cycle Techno-Economic-ESG analysis

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 155428 - 155428

Published: Sept. 3, 2024

Language: Английский