Cost-effective microwave-assisted hydrothermal rapid synthesis of analcime-activated carbon composite from coal gangue used for Pb2+ adsorption

Li, Qi; Lv, Liang; Zhao, Xudong; Wang, Yong; Wang, Yongzhen

doi:10.1007/s11356-022-20942-3

Cited by 10 publications

(10 citation statements)

References 52 publications

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“…Under the conditions of an adsorption time of 2 h and a dosage of 0.8 g/L, the optimum removal rates of 50 mg/L of Cu 2+ and Pb 2+ in mineral processing wastewater were 69.34% and 79.98%, respectively [49]. An adsorbent analcime-activated carbon (ANA-AC) was synthesized from coal gangue [50]. The adsorption of Pb 2+ in the solution by ANA-AC conformed to the Langmuir isotherm model and a pseudo-second-order kinetic model [50].…”

Section: Discussionmentioning

confidence: 99%

Remediation of Acid Mine Drainage in the Haizhou Open-Pit Mine through Coal-Gangue-Loaded SRB Experiments

Dong

Gao

et al. 2023

Sustainability

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To address the pollution problem of acid mine drainage (AMD) characterized by high concentrations of Fe2+, Mn2+, and SO42−, a combination of coal gangue (CG) and sulfate-reducing bacteria (SRB) was employed. The effects of coal-gangue dosage, SRB inoculation concentration, and temperature on AMD treatment with coal-gangue-loaded SRB were determined through single-factor experiments and response surface methodology (RSM) experiments. By considering the principles of adsorption isotherms, adsorption kinetics, and reduction kinetics, the removal mechanisms of SO42−, Fe2+, and Mn2+ in AMD using coal gangue-loaded SRB in the the Haizhou open-pit mine was revealed. The results showed that the overall effectiveness of the four types of coal-gangue-loaded SRB in repairing AMD was as follows: 3# CG-loaded SRB > 2# CG-loaded SRB > 1# CG-loaded SRB > 4# CG-loaded SRB, with coal-gangue-loaded SRB in the the Haizhou open-pit mine showing the best performance. According to the RSM test, the optimum conditions for repairing AMD with coal-gangue-loaded SRB in the open-pit mine were a coal-gangue dosage of 52 g, SRB inoculation concentration of 11.7%, and temperature of 33.4 °C. The order of factors affecting the removal of SO42− and Fe2+ from AMD by SRB loaded on coal gangue was SRB inoculation concentration > temperature > coal-gangue dosage. For Mn2+, the order of influence was temperature > SRB inoculation concentration > coal-gangue dosage. In the process of repairing Fe2+ with coal-gangue-loaded SRB in the the Haizhou open-pit mine, the biological activity metabolism of SRB played a leading role, while the adsorption isotherm of Mn2+ followed the Freundlich model. The adsorption kinetics of coal-gangue-loaded SRB in the the Haizhou open-pit mine for Fe2+ and Mn2+ in AMD conformed to Lagergren’s second-order kinetic model, while the reduction kinetics of SO42− conformed to a first-order reaction model.

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Section: Discussionmentioning

confidence: 99%

Remediation of Acid Mine Drainage in the Haizhou Open-Pit Mine through Coal-Gangue-Loaded SRB Experiments

Dong

Gao

et al. 2023

Sustainability

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“…The various types of waste water can severely harm the ecology. To solve the increasingly severe water pollution problem, functional porous materials such as solid-waste-based zeolites, solid-waste-based ceramic particles, solidwaste-based Fenton-like catalysts, solid-waste-based composite photocatalysts, etc., have been developed and applied to treat heavy metal ions, ionic dyes, and organic pollutants in wastewater [47][48][49][50]. These materials have physical adsorption capabilities and can efficiently treat specific pollutants through their active components.…”

Section: Direct Modificationmentioning

confidence: 99%

“…Li et al [47] created an analcite-activated carbon composite from coal gangue and investigated its adsorption mechanism of Pb 2+ (Figure 3). The research showed that the specific surface area of analcite-activated carbon composite was 20.8202 m 2 /g.…”

Section: Adsorbing Heavy Metal Ions and Nh 4 + Through Ion Exchange O...mentioning

confidence: 99%

Review of the Preparation and Application of Porous Materials for Typical Coal-Based Solid Waste

Wang

et al. 2023

Materials

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The discharge and accumulation of coal-based solid waste have caused great harm to the ecological environment recently. Coal-based solid wastes, such as coal gangue and fly ash, are rich in valuable components, such as rare earth elements (REY), silicon dioxide, alkali metal oxides, and transition metal oxides, which can be used to synthesize various functional Si-based porous materials. This article systematically summarizes the physicochemical characteristics and general processing methods of coal gangue and fly ash and reviews the progress in the application of porous materials prepared from these two solid wastes in the fields of energy and environmental protection, including the following: the adsorption treatment of heavy metal ions, ionic dyes, and organic pollutants in wastewater; the adsorption treatment of CO2, SO2, NOx, and volatile organic compounds in waste gas; the energy regeneration of existing resources, such as waste plastics, biomass, H2, and CO; and the preparation of Li–Si batteries. Combining the composition, structure, and action mechanism of various solid-waste-based porous materials, this article points out their strengths and weaknesses in the above applications. Furthermore, ideas for improvements in the applications, performance improvement methods, and energy consumption reduction processes of typical solid-waste-based porous materials are presented in this article. These works will deepen our understanding of the application of solid-waste-based porous materials in wastewater treatment, waste gas treatment, energy regeneration, and other aspects, as well as providing assistance for the integration of new technologies into solid-waste-based porous material preparation industries, and providing new ideas for reducing and reusing typical Chinese solid waste resources.

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“…Its harmful effects are mainly due to its accumulation and biological activity in the body, interfering with biochemical processes in the body and causing disturbances in a variety of pathophysiological processes. Therefore, the contamination of water with lead ions requires great attention and there is an urgent need to provide efficient treatment technologies for the removal of lead from water. − Common treatment methods include adsorption, membrane separation, and biological treatment . Among these, adsorption treatment has become the main means of decontamination due to its ease of operation and low cost.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the contamination of water with lead ions requires great attention and there is an urgent need to provide efficient treatment technologies for the removal of lead from water. 5−7 Common treatment methods include adsorption, 8 membrane separation, 9 and biological treatment. 10 Among these, adsorption treatment has become the main means of decontamination due to its ease of operation and low cost.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Silica/Iron Phthalocyanine Light-Driven Nanomaterials for Efficient Removal of Pb²⁺ Ions from Wastewater

Pan

Tang

et al. 2023

ACS Appl. Nano Mater.

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The detrimental effects of anthropogenic heavy metal pollution on the environment have recently become a pressing concern, with Pb 2+ ions emerging as a particularly hazardous pollutant. In this paper, we report the synthesis and characterization of light-driven mesoporous silica-IP (iron phthalocyanine) nanomaterials that exhibit remarkable efficiency and selectivity in the removal of Pb 2+ ions from wastewater. The fibrous structure of the material provides a large specific surface area and adsorption sites, enabling it to achieve a theoretical maximum adsorption capacity of 69.78 mg/g. In addition, our studies of the adsorption effect of actual wastewater showed a significant reduction in the concentration of Pb 2+ ions to 1.76 mg/L, indicating the excellent effectiveness of the material in treating contaminated water sources. In addition, the photosensitive material on the surface of the material provides reliable light-driving capability, enabling rapid separation of Pb 2+ ions from wastewater with a maximum movement speed of 26 μm/s.

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Cost-effective microwave-assisted hydrothermal rapid synthesis of analcime-activated carbon composite from coal gangue used for Pb2+ adsorption

Cited by 10 publications

References 52 publications

Remediation of Acid Mine Drainage in the Haizhou Open-Pit Mine through Coal-Gangue-Loaded SRB Experiments

Remediation of Acid Mine Drainage in the Haizhou Open-Pit Mine through Coal-Gangue-Loaded SRB Experiments

Review of the Preparation and Application of Porous Materials for Typical Coal-Based Solid Waste

Mesoporous Silica/Iron Phthalocyanine Light-Driven Nanomaterials for Efficient Removal of Pb²⁺ Ions from Wastewater

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Cost-effective microwave-assisted hydrothermal rapid synthesis of analcime-activated carbon composite from coal gangue used for Pb2+ adsorption

Cited by 10 publications

References 52 publications

Remediation of Acid Mine Drainage in the Haizhou Open-Pit Mine through Coal-Gangue-Loaded SRB Experiments

Remediation of Acid Mine Drainage in the Haizhou Open-Pit Mine through Coal-Gangue-Loaded SRB Experiments

Review of the Preparation and Application of Porous Materials for Typical Coal-Based Solid Waste

Mesoporous Silica/Iron Phthalocyanine Light-Driven Nanomaterials for Efficient Removal of Pb2+ Ions from Wastewater

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Product

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Mesoporous Silica/Iron Phthalocyanine Light-Driven Nanomaterials for Efficient Removal of Pb²⁺ Ions from Wastewater