Formulation of sludge incineration residue based geopolymer and stabilization performance on potential toxic elements

Sun, Shichang; Lin, Junhao; Lin, Fang; Ma, Rui; Zhu, Ding; Zhang, Xianghua; Zhao, Xuxin; Liu, Yilin

doi:10.1016/j.wasman.2018.04.022

Cited by 24 publications

(20 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This process involves alkaline activators for the dissolution of aluminum and silicate compounds as well as metakaolin to form a gel by condensation reaction. [46,47] Geopolymers can usually encapsulate or immobilize heavy metals, as reported by Jaarsveld and co-workers. [48] Authors have prepared a geopolymer from sludge incineration residue that presented a reduction over leaching concentrations of Chromium (Cr), Cadmium (Cd), and Lead (Pb), for example, by stabilizing them on the geopolymer.…”

Section: Industrial Residuesmentioning

confidence: 99%

Eco‐friendly polymer composites: A review of suitable methods for waste management

Cabrera

2021

Polymer Composites

View full text Add to dashboard Cite

The amount of residues generated by agriculture, industrial, or urban activities continuously increases and, consequently, demands several methods for their correct management. The incorrect disposal can cause, in specific cases, environmental contamination by heavy metals or leaching as well as promote the spread of diseases as insect proliferation. Commonly, landfilling, incinerating, composting, or energy/fuel generation can control the disposal or reuse of residues. Among the methods for the reuse of wastes, the incorporation of residues as fillers in polymer composites has emerged as a distinct field. Some composites can potentially mitigate leaching compounds or improve mechanical, thermal, and acoustic properties. However, these improvements are a challenge to promote the use of waste fillers. Thus, this study aims to provide a state of view regarding a variety of wastes used as fillers in polymer composites and different methods to reach mechanical reinforcement as well as improve thermal conductivity and acoustic attenuation for future researches.

show abstract

Section: Industrial Residuesmentioning

confidence: 99%

Eco‐friendly polymer composites: A review of suitable methods for waste management

Cabrera

2021

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…Saeli et al 71 discovered that the inclusion of small amounts of calcareous sludge functioned as a filler in geopolymers, leading to a noteworthy 30% increase in mechanical properties. The incorporation of sludge particles that did not participate in the reaction helped fill voids In a related study, Sun et al 70 examined the impact of different doping ratios on the geopolymerization reaction by mixing sludge and MK at varying proportions. Figure 8D,E illustrates that as the doping ratio was increased from 40% sludge to 60% kaolinite to 10% sludge to 90% kaolinite, the micromorphological structure of the geopolymer transformed from loose to dense, and the number of pores decreased gradually.…”

Section: Metakaolinmentioning

confidence: 99%

“…Yan et al 42 found that an increase in sludge admixture led to a decrease in compressive strength of the geopolymers, with values of 55.7 and 31.2 MPa for 2.5% and 10% sludge admixture, respectively, after 91 days of curing. Sun et al 70 reported a compressive strength of 9 MPa for geopolymers made solely with pretreated sludge after 28 days of curing, while blending 10% sludge with 90% MK resulted in a higher compressive strength of 95.6 MPa at 28 days of curing. Moreover, the presence of heavy metal ions and toxic substances in sludge poses a significant challenge to the mechanical properties of geopolymers.…”

Section: Raw Materialsmentioning

confidence: 99%

Sludge‐based geopolymer materials: A review

Kong,

Shi,

Shen

et al. 2024

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Sludge refers to the solid waste produced after sewage treatment. Unreasonable disposal of sludge can cause environmental pollution. Nonetheless, the sludge contains large amounts of silica‐aluminate, which has pozzolanic activity by treatment, and the sludge can be used as a sustainable building material. The previous studies have recommended that it is reasonable to produce geopolymers, that is, a green low‐carbon cementitious material with excellent mechanical and durability properties, from sludge. This article provides an overview of recent advancements in the study of sludge‐based geopolymer. It delves into the mechanisms behind alkali‐activated geopolymer, examines the feasibility of preparing geopolymer from sludge, and discusses various preparation methods. Additionally, it elaborates on the impact of incorporating different auxiliary materials on sludge‐based geopolymer. The comprehensive performance of sludge‐based geopolymer, encompassing mechanical properties, durability, and setting time, is thoroughly summarized. An environmental assessment is conducted, evaluating heavy metal leaching and the lifecycle of sludge‐based geopolymer. Finally, we briefly discuss some problems in the current research and development trends in the future on sludge‐based geopolymer. The aim of this article is to provide comprehensive support and guidance for both the research and practical engineering applications of sludge‐based geopolymer.

show abstract

“…El-eswed [ 108 ] proposed that Cu can replace Si in the geopolymer structure, being similar to Pb. Moreover, the leaching of Cu was always evaluated in terms of geopolymers synthesized from fly ash and industrial sludge [ 142 ], mine tailing [ 143 ], lead–zinc smelting slag [ 75 ], sludge incineration residue [ 144 ], red mud, and municipal solid waste incineration fly ash (MSWI) [ 145 , 146 , 147 ], melting slag of MSWI and bottom ash [ 148 ], electrolytic manganese residue [ 149 ], electric arc furnace dust [ 150 ], etc. Importantly, the leaching concentration of Cu can be satisfied with related standards.…”

Section: Geopolymer-based S/s Processmentioning

confidence: 99%

Application of Geopolymer in Stabilization/Solidification of Hazardous Pollutants: A Review

et al. 2022

View full text Add to dashboard Cite

Geopolymers, as a kind of inorganic polymer, possess excellent properties and have been broadly studied for the stabilization/solidification (S/S) of hazardous pollutants. Even though many reviews about geopolymers have been published, the summary of geopolymer-based S/S for various contaminants has not been well conducted. Therefore, the S/S of hazardous pollutants using geopolymers are comprehensively summarized in this review. Geopolymer-based S/S of typical cations, including Pb, Zn, Cd, Cs, Cu, Sr, Ni, etc., were involved and elucidated. The S/S mechanisms for cationic heavy metals were concluded, mainly including physical encapsulation, sorption, precipitation, and bonding with a silicate structure. In addition, compared to cationic ions, geopolymers have a poor immobilization ability on anions due to the repulsive effect between them, presenting a high leaching percentage. However, some anions, such as Se or As oxyanions, have been proved to exist in geopolymers through electrostatic interaction, which provides a direction to enhance the geopolymer-based S/S for anions. Besides, few reports about geopolymer-based S/S of organic pollutants have been published. Furthermore, the adsorbents of geopolymer-based composites designed and studied for the removal of hazardous pollutants from aqueous conditions are also briefly discussed. On the whole, this review will offer insights into geopolymer-based S/S technology. Furthermore, the challenges to geopolymer-based S/S technology outlined in this work are expected to be of direct relevance to the focus of future research.

show abstract

Formulation of sludge incineration residue based geopolymer and stabilization performance on potential toxic elements

Cited by 24 publications

References 36 publications

Eco‐friendly polymer composites: A review of suitable methods for waste management

Eco‐friendly polymer composites: A review of suitable methods for waste management

Sludge‐based geopolymer materials: A review

Application of Geopolymer in Stabilization/Solidification of Hazardous Pollutants: A Review

Contact Info

Product

Resources

About