Efficient removal of water pollutants by hierarchical porous zeolite-activated carbon prepared from coal gangue and bamboo

Li, Hui; Li, Mingjun; Zheng, Feng; Wang, Jing; Chen, Lai; Hu, Pengfei; Zhen, Qiang; Bashir, Sajid; Liu, Jingbo Louise

doi:10.1016/j.jclepro.2021.129322

Cited by 53 publications

(21 citation statements)

References 61 publications

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“…54,124 As shown in Table 3, the synthetized zeolite types include NaA, 53,120,123,125 NaX, 52,118,124,126,127 NaY, 119 SSZ-13, 128 ZSM-5, 129 magnetic zeolite, 54 and zeolite/activated carbon composites. 120,130 Qian et al 123 synthesized NaA zeolite molecular sieves with a high specific surface area and Ca 2+ exchange capacity using CG as a raw material. The CG was crushed, calcined at 800 • C after pretreatment, mixed with sodium hydroxide, and treated at 400 • C. After the mixture cooled to room temperature, deionized water was added to dissolve the mixture, which was stirred for 2 h. NaA zeolite molecular sieves with good crystallinity were obtained by hydrothermal crystallization at 90 • C for 5 h. The specific surface area of the product reached 542.17 m 2 /g, and the maximum adsorption capacity of Ca 2+ was 358 mg/g.…”

Section: Zeolitesmentioning

confidence: 99%

“…In addition to pure zeolite molecular sieves, zeolite/activated carbon composites prepared from CG are also attracting attention in the field of adsorption. Besides CG as the silicon and aluminum source, additional carbon sources (coal 120 and bamboo 130 ) are added for the F I G U R E 1 2 LTA zeolite molecular sieve synthesized from coal gangue and treated zeolite. 131 conversion into activated carbon.…”

Section: Zeolitesmentioning

confidence: 99%

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Fabrication and application of porous materials made from coal gangue: A review

Shao

Zheng

et al. 2023

Int J Applied Ceramic Tech

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Coal gangue (CG), which is mainly generated during coal excavation, mining, and coal washing, is an industrial solid waste that is recognized as an environmental pollutant. The ever‐increasing amount of CG produced is a serious threat to the ecological environment and property safety, especially in China, which is the largest coal producer and consumer in the world. Considerable studies have investigated means for utilizing CG worldwide. This review summarizes and discusses various porous inorganic materials made from CG, including cement‐based porous materials, porous bricks, porous ceramics (cordierite and mullite) and glasses, porous geopolymers, zeolites, aerogels, and porous carbon materials. Different preparation processes and performances of each type of porous inorganic materials were reviewed. Porous CG‐based materials can be used as promising adsorbents for the removal of various pollutants and have good potential for use in construction industry as well as catalyst material applications. Besides, porous materials obtained from CG have also been tested as slow‐release fertilizers after the absorption of phosphate, as electrode materials, and as oil‐in‐water separation agents. The systematic summary of porous materials based on CG aims at promoting high‐value‐added applications for this waste. Future research directions for the use of CG as a raw material are also presented.

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Section: Zeolitesmentioning

confidence: 99%

Section: Zeolitesmentioning

confidence: 99%

Fabrication and application of porous materials made from coal gangue: A review

Shao

Zheng

et al. 2023

Int J Applied Ceramic Tech

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“…Agricultural waste is usually the rst choice to prepare biomass-derived activated carbon, attributing to its high specic surface area, high stability, excellent adsorption properties, simple production process and low price. 12 This paper focuses on the advanced preparation progress of biomass-derived activated carbon and its application in the adsorption of heavy metals from wastewater in the past ve years. By collecting relevant information about heavy metals adsorbed by biomass and using appropriate language, the carbonization, activation and modication of biomass-derived activated carbon are reviewed.…”

Section: Introductionmentioning

confidence: 99%

“…Agricultural waste is usually the first choice to prepare biomass-derived activated carbon, attributing to its high specific surface area, high stability, excellent adsorption properties, simple production process and low price. 12 …”

Section: Introductionmentioning

confidence: 99%

Adsorption of heavy metal onto biomass-derived activated carbon: review

et al. 2023

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“…The adsorption capacity was 8.0 to 9.3 mg/g, and the activated Carbone doses were 2 mg/mL, pH 9, and a contact time of 120 minutes with a q max between 17 to 30 mg/g (Shaida et al, 2022). The research on activated carbon manufacture from coal gangue and bamboo explained that the combination of zeolite and activated carbon had an adsorption capacity to the Cu 2+ of 104.9 mg/g and Rh-B was 83.4 mg/g (Li et al, 2021). The study of activated carbon manufacture from coal was interesting, but several results showed that there were parameters that had met SNI standards or other standards, and some of the results have not tested for the parameters and adsorption capacity for chromium pollutants.…”

Section: Introductionmentioning

confidence: 99%

Production of Activated Carbon from High-Grade Bituminous Coal to Removal Cr (VI)

Kusdarini

Pradana

Budianto

2022

Reaktor

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Activated carbon was produced from high-grade bituminous coal, potentially removing Cr metal in textile industrial waste. The purposes of this study were 1) getting activated carbon characteristics, 2) studying the impact of reagent concentration and activation temperature on the activated carbon characteristics, and 3) getting the isotherm adsorption equation for activated carbon developed by Freundlich and Langmuir on Cr metal. This research used an experimental method with a laboratory scale, which means the manufacture of activated carbon and a test of adsorbs power of activated carbon to the Cr metal were conducted in the laboratory. Activated carbon manufacture through carbonization process of chemical activation used reagent (NH4)3PO4, neutralization, filtration, physical activation, and cooling. At the same time, it tested the adsorption power of the activated carbon to Cr metal through activated carbon contact with a solution containing some Cr6+ ion. The update in this research was using reagent (NH4)3PO4 and the test of adsorption power of activated carbon to Cr6+ ion contained in the artificial waste. This research showed activated carbon that has been activated using reagent (NH4)3PO4 0.5 – 2 M at physical activation temperature of 825oC and has met the standard of SNI number 06-3730-1995. The best-activated carbon was produced from chemical activation using (NH4)3PO4 1 M solution and physical activation at 825oC. The best-activated carbon characteristics contained 1.27% water; 17.17% content of volatile matter, 9.39% was ash content; 73.17% contained fixed carbon, and the iodine value was 1248.30 mg/g. The best Equation of Langmuir isotherm adsorption of activated carbon to the Cr6+ produced Constant Ar = -90.0901 and Kc = -0.0075.

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Efficient removal of water pollutants by hierarchical porous zeolite-activated carbon prepared from coal gangue and bamboo

Cited by 53 publications

References 61 publications

Fabrication and application of porous materials made from coal gangue: A review

Fabrication and application of porous materials made from coal gangue: A review

Adsorption of heavy metal onto biomass-derived activated carbon: review

Production of Activated Carbon from High-Grade Bituminous Coal to Removal Cr (VI)

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