Development of porous and reusable geopolymer adsorbents for dye wastewater treatment

Li, Chan Juan; Zhang, Yaojun; Chen, Hao; Meng, Qian

doi:10.1016/j.jclepro.2022.131278

Cited by 57 publications

(18 citation statements)

References 45 publications

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“…Through the introduction of AgI, the photocatalytic activity of the AgI/ Ag 6 Si 2 O 7 /PET composites was significantly enhanced compared with that of Ag 6 Si 2 O 7 /PET. The kinetic constant was obtained by AgI/Ag 6 Si 2 O 7 /PET(5), which was about 5.5 times and 9.6 times greater than those of Ag 6 Si 2 O 7 /PET and AgI/PET, respectively. The excellent photocatalytic activity and superior photostability of AgI/Ag 6 Si 2 O 7 /PET are attributed to the accumulative effects of the enhanced light utilization efficiency, the highly accessible active sites, and the promoted separation rate of photogenerated charge carriers across the AgI/Ag 6 Si 2 O 7 interface according to the Z-scheme mechanism.…”

mentioning

confidence: 81%

“…4 In the absence of proper treatment, dye wastewater not only seriously harms the ecosystem but also poses potential threats to human health and social development. 5…”

Section: Introductionmentioning

confidence: 99%

“…4 In the absence of proper treatment, dye wastewater not only seriously harms the ecosystem but also poses potential threats to human health and social development. 5 Typical wastewater treatment methods, such as filtration, 6 coagulation, 7 and electrolysis, 8 have some disadvantages, including high costs, poor dye removal, and secondary pollution. Hence, it is essential to develop new efficient and economical wastewater treatment technologies.…”

Section: Introductionmentioning

confidence: 99%

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Incorporation of a Z-scheme AgI/Ag₆Si₂O₇ heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

et al. 2022

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mentioning

confidence: 81%

“…4 In the absence of proper treatment, dye wastewater not only seriously harms the ecosystem but also poses potential threats to human health and social development. 5…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Incorporation of a Z-scheme AgI/Ag₆Si₂O₇ heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

et al. 2022

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“…Dyes cause severe ill effects to the kidneys, the reproductive system, and cardiovascular system in humans. , Acidic dyes infect eyes, cause respiratory issues and skin-related disorders such as allergies, whereas basic dyes result in vomiting, nausea, increased heart rate, etc. Any reduction in azo dyes releases amino groups that pose problems when deposited in water sources.…”

Section: Industry Dyes: Toxicity and Health Effectsmentioning

confidence: 99%

Removal of Toxic Pollutants from Industrial Effluent: Sustainable Approach and Recent Advances in Metal Organic Framework

Saravanan

Kumar

Rangasamy

2022

Ind. Eng. Chem. Res.

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The water environment is mostly polluted by expanded industrial advancements and growth, which directly liberates various toxic pollutants into the water streams. These emerging pollutants cause several hazardous health issues to humans, animals, and the ecosystem. Conventional treatment methodology faces different issues in the recognition and removal of toxins, such as expense, facile operation conditions, and the prerequisite of high maintenance. To overcome this issue, adsorption is viewed as one of the most encouraging innovations for the removal of pollutants. Recently, metal-organic frameworks (MOFs) have been considered to be efficiently adsorbent, because of their porosity, high surface area, fine-tunable metal clusters, and easy functional surface engineering properties. This Review concerns the recent examinations on MOFs as proficient material in the removal of toxic contaminants from wastewater. The adsorption mechanism of toxic pollutants removal using MOFs-based materials was critically reviewed and discussed. At last, challenges and the viewpoint for future advancement of MOFs is summarized.

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“…The current methods for sewage treatment are mainly divided into chemical, biological and physical methods, etc. 1 Among the physical methods, adsorption using adsorbents has gained widespread attention attributed of its simple process, good regeneration performance, and reusability. 2,3 Geopolymer is a three-dimensional network gel material composed of silica-oxygen tetrahedra and alumina-oxygen tetrahedra, which is formed by the depolymerization-condensationgel networking process in strong alkali solution with natural aluminosilicate minerals or solid waste as the raw materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and adsorption performance of fly ash/steel slag‐based geopolymer for removal of Cu (II) and methylene blue

Yan

Feng

Huang

et al. 2023

Int J Applied Ceramic Tech

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In order to realize the value-added resource utilization of solid waste, geopolymer particle adsorbents were prepared at low temperatures using silica-aluminumrich fly ash and steel slag powders as raw materials. In order to investigate the mechanism of their adsorption of dyes and heavy metal ions from wastewater, the effects of steel slag/fly ash ratio, adsorbent dosage, initial concentration of methylene blue (MB) and Cu 2+ solution, adsorption time and temperature on the adsorption performance of the fly ash/steel slag-based geopolymer adsorbents were investigated, systematically. Results presented that the adsorption capacities of MB and Cu 2+ were 33.30 and 24.15 mg/g, and the removal efficiencies were 99.90% and 96.59% with the dosages of 3 and 4 g/L geopolymer adsorbents (steel slag/fly ash ratio of 20 wt.%), respectively. The adsorption processes of MB and Cu 2+ on the adsorbents were in accordance with the proposed pseudo-second-order and Langmuir isotherm models, which mainly included physical and chemical adsorption mechanisms. The adsorption was a spontaneous endothermic process. The fly ash/steel slag-based geopolymer had good removal ability for dyes and heavy metal ions, and it could maintain good adsorption performance after three cycles of regeneration. It had potential application in wastewater treatment.

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Development of porous and reusable geopolymer adsorbents for dye wastewater treatment

Cited by 57 publications

References 45 publications

Incorporation of a Z-scheme AgI/Ag₆Si₂O₇ heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

Incorporation of a Z-scheme AgI/Ag₆Si₂O₇ heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

Removal of Toxic Pollutants from Industrial Effluent: Sustainable Approach and Recent Advances in Metal Organic Framework

Synthesis and adsorption performance of fly ash/steel slag‐based geopolymer for removal of Cu (II) and methylene blue

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Development of porous and reusable geopolymer adsorbents for dye wastewater treatment

Cited by 57 publications

References 45 publications

Incorporation of a Z-scheme AgI/Ag6Si2O7 heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

Incorporation of a Z-scheme AgI/Ag6Si2O7 heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

Removal of Toxic Pollutants from Industrial Effluent: Sustainable Approach and Recent Advances in Metal Organic Framework

Synthesis and adsorption performance of fly ash/steel slag‐based geopolymer for removal of Cu (II) and methylene blue

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Incorporation of a Z-scheme AgI/Ag₆Si₂O₇ heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

Incorporation of a Z-scheme AgI/Ag₆Si₂O₇ heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation