Effect of Pb+2 ion on physico chemical properties of fly ash -slag geopolymer pastes

Helall, S.; Ahmed, Doaa; Ragei, Sheren M.

doi:10.21608/jsrs.2021.210660

Cited by 3 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with other mixes, the values for compressive strength for SF-RD-Cu 2+ mixes exhibited the highest values, which might be explained by the incorporation of dyeing bath effluent and copper (II) ions into the slag-based geopolymer matrix, which reduced the pore size. Figure 4 also reveals that the compressive strength values for the SF-Cu 2+ mix were the lowest, which, in accordance with the most recent study [ 35 , 37 ], may be explained by the retardation effect of heavy-metal-ion-induced hydration processes.…”

Section: Resultssupporting

confidence: 90%

“…Equation (4) [ 34 , 37 ] can be used to calculate how much copper ions and organic dye effluent are immobilized in the hardened geopolymer pastes Immobilization = 100 − Leaching % …”

Section: Methodsmentioning

confidence: 99%

“…Geopolymers have increasingly garnered a lot of attention for the immobilization of harmful wastes in recent years [ 17 ]. For the Solidification/Stablization of hazardous pollutants, which are classified into heavy metals (cations and anions) and organic pollutants, geopolymers are currently the topic of extensive several studies [ 17 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. Particularly geopolymers have the potential to offer extraordinarily long-term storage for the safe disposal of radioactive waste with high radioactivity [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Immobilization Approach as a Creative Strategy to Remove Reactive Dye Red 195 and Cu2+ Ions from Wastewater Using Environmentally Benign Geopolymer Cement

2023

View full text Add to dashboard Cite

Water is a resource that is essential to almost all phases of industrial and manufacturing operations globally. It is important to handle the wastewater generated professionally. The textile industry is one of the major global polluters, with textile producers responsible for one-fifth of all industrial water pollution worldwide. In contrast, heavy metal contamination has developed into a critical, expanding global environmental problem. Geopolymer is a cementitious constituent of amorphous aluminosilicates derived from natural or industrial wastes. It is produced using the polymerization of aluminosilicate raw ingredients in an alkaline atmosphere. The aim of this study is to evaluate the application of eco-friendly geopolymer cement in the immobilization technique for the treatment of wastewater including heavy metals and dyes. Geopolymer cement pastes were organized using slag and fly ash as an aluminosilicate source, (1:1) sodium silicate and sodium hydroxide 15 wt.% as an alkali activator in the presence of organic dye pollutant reactive red 195, and Cu2+ ions (700 ppm) at different hydration times for up to 28 days. The physicochemical and mechanical properties of the prepared geopolymer cement mixes were further examined in relation to reactive dye pollutant and Cu2+ ions. The hydration characteristic was examined using the compressive strength and % of total porosity tests, as well as FTIR and XRD studies. Our findings support the 100% immobilization of both Cu2+ ions and organic dye pollutants in prepared geopolymer pastes for up to 28 days of hydration. Additionally, adding both Cu2+ ions and dye pollutants to the prepared geopolymer paste improves its mechanical properties, which is also supported by FTIR data. XRD and FTIR studies showed that the Cu2+ ions and dying bath effluent addition have no influence on the kind of hydration products that are produced. On the other hand, the geopolymerization process is negatively impacted by the presence of Cu2+ ions alone in the geopolymer paste.

show abstract

Section: Resultssupporting

confidence: 90%

“…Equation (4) [ 34 , 37 ] can be used to calculate how much copper ions and organic dye effluent are immobilized in the hardened geopolymer pastes Immobilization = 100 − Leaching % …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Immobilization Approach as a Creative Strategy to Remove Reactive Dye Red 195 and Cu2+ Ions from Wastewater Using Environmentally Benign Geopolymer Cement

2023

View full text Add to dashboard Cite

show abstract

“…To evaluate how much reactive black 5 dyeing bath effluent, cadmium, and lead ions were immobilized and solidified in the hardened geopolymer pastes, we used Equation (4) [32][33][34][35][36][37][38][39][40][41].…”

Section: Solidification/stabilization Approach (A) Preparation Of Mk/...mentioning

confidence: 99%

“…Several studies [29][30][31] examined the impact of CKD addition on the mechanical characteristics of the metakaolin-based geopolymer pastes. On the other hand, cementation materials or geopolymer binders were used in a few studies to study an innovative and efficient process of solidifying and removing reactive organic dye pollutants and heavy metals [32][33][34][35][36][37][38][39][40][41]. Our most recent investigations focused on the use of metakaolin as an adsorbent when combined with industrial wastes such as fly ash and ground granulated blast furnace slag for reactive dye removal [42][43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of the Effectively Environmentally Safe Metakaolin-Based Geopolymer for the Removal of Hazardous Industrial Wastes Using Two Different Methods

et al. 2023

View full text Add to dashboard Cite

Untreated wastewater pollution causes environmental degradation, health issues, and ecosystem disruption. Geopolymers offer sustainable, eco-friendly alternatives to traditional cement-based materials for wastewater solidification and removal. In this study, we investigate how wastewater containing organic and inorganic pollutants can be removed using geopolymer mixes based on metakaolin incorporation with cement kiln dust as an eco-friendly material. The present investigation compares the efficacy of two different techniques (solidification and adsorption) for reducing dye contaminants and heavy metals from wastewater using a geopolymer based on metakaolin incorporation with cement kiln dust. This study investigated the adsorption capacity of a geopolymer based on metakaolin incorporating two different ratios (20% and 40% by weight) of cement kiln dust (MC1 and MC2) for the reactive black 5 dyeing bath effluent (RBD) only and in a combination of 1200 mg/L of Pb2+ and Cd2+, each separately, in aqueous solutions under different adsorption parameters. The results of the adsorption technique for the two prepared geopolymer mixes, MC1 and MC2, show that MC1 has a higher adsorption activity than MC2 toward the reactive black 5 dyeing bath effluent both alone and in combination with Pb2+ and Cd2+ ions separately. The study also looked at using MC1 mix to stabilize and solidify both the dyeing bath effluent alone and its combination with 1200 mg/L of each heavy metal individually inside the geopolymer matrix for different time intervals up to 60 days of water curing at room temperature. The geopolymer matrix formed during the process was analyzed using FTIR, SEM, and XRD techniques to examine the phases of hydration products formed. The results showed that MC1 effectively adsorbs, stabilizes, and solidifies the dying bath effluent for up to 60 days, even with high heavy metal concentrations. On the other hand, geopolymer mixes showed an increase in mechanical properties when hydration time was increased to 60 days. According to our findings, the type of geopolymer developed from metakaolin and 20 wt.% cement kiln dust has the potential to be employed in the treatment of wastewater because it has good adsorption and solidification activity for the reactive black 5 dye effluent alone and for a mixture of dye pollutants with both Pb2+ and Cd2+ ions separately. Our results have significant implications for wastewater treatment and environmental remediation efforts, as they offer a sustainable solution for managing hazardous waste materials.

show abstract

A Sustainable Approach for Immobilization Dyeing bath Effluents of Reactive Yellow 145 by using Different Types of Eco-Friendly Geopolymer Cement

El‐Apasery¹,

Ahmed²

2022

Egypt. J. Chem.

View full text Add to dashboard Cite

A suggested approach for handling reactive organic dye waste from the textile industry was developed using the geopolymerization process. Two separate kinds of geopolymer cement pastes are used to reduce the colour of the liquid wastes of reactive yellow 145. According to the results, we were able to cleanse the water created by dyeing processes and lower pollution rates. Geopolymer cement pastes were organized using metakaolin and slag as an aluminosilicate source separately, sodium silicate and sodium hydroxide as an alkali activator in the presence of organic dye pollutant reactive yellow 145. The study was carried out with various PH mediums and hydration times. Spectrophotometric measurements were used to measure the % leaching of pollutant dye. The % leaching of reactive dye was examined with variable pH (0.1M NaOH, deionized water and 0.1M HCl). We also examine the effect of reactive dye on the hydration characteristics of different geopolymer mixes. FTIR and XRD studies were employed to evaluate the influence of the reactive dye's incorporation inside GP samples.

show abstract

Effect of Pb+2 ion on physico chemical properties of fly ash -slag geopolymer pastes

Cited by 3 publications

References 15 publications

Immobilization Approach as a Creative Strategy to Remove Reactive Dye Red 195 and Cu2+ Ions from Wastewater Using Environmentally Benign Geopolymer Cement

Immobilization Approach as a Creative Strategy to Remove Reactive Dye Red 195 and Cu2+ Ions from Wastewater Using Environmentally Benign Geopolymer Cement

Green Synthesis of the Effectively Environmentally Safe Metakaolin-Based Geopolymer for the Removal of Hazardous Industrial Wastes Using Two Different Methods

A Sustainable Approach for Immobilization Dyeing bath Effluents of Reactive Yellow 145 by using Different Types of Eco-Friendly Geopolymer Cement

Contact Info

Product

Resources

About