A state-of-the-art review of recent advances in porous geopolymer: Applications in adsorption of inorganic and organic contaminants in water

Construction and Building Materials, Год журнала: 2023, Номер 395, С. 132269 - 132269

Опубликована: Июнь 30, 2023

Язык: Английский

---

Biochar as green adsorbents for pharmaceutical pollution in aquatic environments: A review

Desalination, Год журнала: 2024, Номер 583, С. 117725 - 117725

Опубликована: Май 10, 2024

Язык: Английский

---

Chemical fundamentals of geopolymers in sustainable construction

Materials Today Sustainability, Год журнала: 2024, Номер 27, С. 100842 - 100842

Опубликована: Май 19, 2024

The rising environmental toll of traditional cement production, marked by substantial resource consumption, high greenhouse gas emissions, and low energy efficiency, drives the need for alternative, sustainable building materials. This review advocates a shift towards geopolymers as focusing on their chemical fundamentals, which are key to this transition. study affirms that support multiple Sustainable Development Goals (SDGs) through lower carbon footprint reduced usage, addressing critical eco-friendly construction options. Further, refines classification aluminosilicate raw materials into true precursors auxiliary details reactivity profiles, essential enhancing geopolymer formulations thereby improving quality. clarifies common misunderstandings in chemistry, such differences between alkalination alkali activation, activators versus hardeners, gels geopolymers, well dissolution depolymerization, foundational knowledge needed material science innovation. Examination composition ratios SiO₂/Al₂O₃, M₂O/SiO₂, SiO₂/Fe₂O₃, Na/Fe, Al/Fe H₂O/M₂O highlights significant impact mechanical properties longevity geopolymers. Furthermore, distinctions alkali-aluminosilicate (AAS) phosphate (ASP) elucidated, showing AAS offer better early-age strength, whereas ASP provide greater thermal stability dielectric properties. also specifies curing processes crucial performance, with high-temperature boosting early strength at potential cost long-term durability, ambient durability resistance. further standardized testing procedures regulatory frameworks promote wider adoption construction. Overall, underscores importance advancing technology deep understanding support, facilitating broader integration practices establishing fundamental component solutions.

Язык: Английский

---

Foamed geopolymer insulation materials: Research progress on insulation performance and durability

Journal of Cleaner Production, Год журнала: 2024, Номер 444, С. 140991 - 140991

Опубликована: Фев. 2, 2024

Язык: Английский

---

Review on the effect collision between hazardous metal ions and geopolymer as adsorbents or in situ stabilization/solidification

Applied Clay Science, Год журнала: 2024, Номер 249, С. 107258 - 107258

Опубликована: Янв. 16, 2024

Язык: Английский

---

Adsorption Behavior and Mechanism of MB, Pb(II) and Cu(II) on Porous Geopolymers

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

---

A State‐of‐the‐Art Review on Effectiveness of Geopolymer Technology Toward Dye Degradation, Heavy Metal Encapsulation and Its Future Prospects on Environmental Remediation

Environmental Quality Management, Год журнала: 2025, Номер 34(3)

Опубликована: Фев. 3, 2025

ABSTRACT Geopolymers are an innovative class of environmentally friendly materials gaining significant attention in construction, science, and sustainable technology. As alternatives to traditional cement‐based materials, geopolymers exhibit unique mechanical properties suitable for various construction applications, including use as coating high‐temperature‐resistant materials. Notably, can effectively adsorb heavy metals, dyes, radioactive pollutants, offering substantial environmental benefits. This review paper explores the process mechanism geopolymerization, well application treatment contaminants. It details how aluminosilicate precursors contribute photocatalytic degradation examining role different raw material sources, types activators or additives used, preparation methods. highlights effectiveness dye degradation, providing insights into underlying mechanisms. Additionally, delves interaction with metals through mechanisms such chemisorption, complexation, adsorption, ion exchange, intraparticle diffusion, solidification within geopolymer matrix. comprehensive analysis existing research aids researchers understanding capabilities limitations remediation. Beyond waste reduction, addresses broader impact geopolymers, particularly their potential reducing carbon footprint compared cement. aspect is crucial evaluating overall sustainability geopolymers. Furthermore, emphasizes importance life cycle durability assessments (LCA) evaluate ecological this eco‐friendly concrete throughout its lifetime, from end‐of‐life disposal. LCA provides a complete perspective on guiding future applications construction. By synthesizing current serves valuable resource technology, directions applications.

Язык: Английский

---

Research progress on solidification/stabilization of sludge with Alkali‒Activated cementitious materials: A review

Sustainable Chemistry and Pharmacy, Год журнала: 2025, Номер 43, С. 101904 - 101904

Опубликована: Янв. 14, 2025

Язык: Английский

---

Geopolymer-Based Stabilization of Heavy Metals, the Role of Chemical Agents in Encapsulation and Adsorption: Review

Polymers, Год журнала: 2025, Номер 17(5), С. 670 - 670

Опубликована: Март 1, 2025

This review provides a comprehensive analysis of the role chemical agents in enhancing performance geopolymers for stabilization and adsorption heavy metals. Geopolymers, synthesized from aluminosilicate sources activated under alkaline conditions, are recognized their versatile structural environmental benefits, including low carbon emissions high resistance. Their unique Si-O-Al framework supports both stabilization/solidification (S/S) processes, making them an ideal polymeric matrix immobilization hazardous metals contaminated environments. The categorizes metal mechanisms into physical encapsulation, ion exchange, hydroxide precipitation, complexation, depending on specific species geopolymer formulation. introduction stabilizing agents, such as dithiocarbamate, sodium sulfide, trimercaptotriazine, significantly improves encapsulation efficacy by promoting targeted reactions stable complexes. These enable effective S/S metals, lead, cadmium, chromium, reducing leachability impact. In addition to solid waste management applications, have shown promising capabilities aqueous contaminants, with modifications further increasing affinity evaluates impact different synthesis conditions overall immobilization, highlighting advances applications future research directions sustainable treatment.

Язык: Английский

---

Development and optimization of geopolymer adsorbent for water treatment: Application of mixture design approach

Journal of Environmental Management, Год журнала: 2023, Номер 338, С. 117853 - 117853

Опубликована: Апрель 2, 2023

Язык: Английский

---