Circular conversion of waste rectorite@dye to efficient and pH-resistant heterogeneous silicate adsorbents for cyclic and complete dye removal

He, Qingdong; Liu, Xiangyu; Wang, Yiwen; Ding, Ke; Ge, Hanwen; Xie, Chengzhe; Wang, Wenbo; Guo, Fang

doi:10.1016/j.clay.2022.106556

Cited by 10 publications

(2 citation statements)

References 73 publications

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“…XRD data confirm the Kaolin from Bangka Island has kaolinite as its main component. Rectorite (He et al, 2022;Yubin et al, 2014) and kaolinite (Ayanda et al, 2018b) are clay minerals that can be used as adsorbents.…”

Section: Xrd Analysis Of Natural Kaolinmentioning

confidence: 99%

Adsorption of Indigo Carmine Dye and Copper Ion by Kaolin from Bangka Island

Tahya

Cornelia

Siregar

et al. 2023

Indo. J. Chem. Res.

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Indigo Carmine (IC) is a synthetic dye that might promote irritations, vomiting, and diarrhea when orally consumed in high concentrations. Copper is a dangerous heavy metal that tends to accumulate in organisms' cells as a pollutant. Hyperproduction of IC and accumulation of copper in water could cause an environmental problem that must be adequately addressed. Kaolin is found abundant on Bangka Island. Based on XRD analysis, Kaolin Island from Bangka Island consists of two important minerals, Kaolinite and Rectorite. Kaolin has chemical and physical properties, which make it useful in several applications, including as an adsorbent. This study aims to evaluate how Kaolin can adsorb copper ion from acid wastewater (pH < 0.5) and determine natural Kaolin's ability to adsorb IC dye from an aqueous solution. Many factors, including mixing time and number of doses of Kaolin, influence Kaolin's ability to absorb IC. The longer the stirring time, the more IC is absorbed. The optimal temperature for IC adsorption is 25˚C. The optimal kaolin dose for IC adsorption is 20% (m/v). Copper concentration after application of Kaolin tends to decrease, with optimal at 25.09% (m/v) dosage for 19.23% copper removal.

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Section: Xrd Analysis Of Natural Kaolinmentioning

confidence: 99%

Adsorption of Indigo Carmine Dye and Copper Ion by Kaolin from Bangka Island

Tahya

Cornelia

Siregar

et al. 2023

Indo. J. Chem. Res.

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“…The advantages and application potential of the adsorption method in pollutant removal have stimulated the rapid development of adsorbents. So far, various adsorption materials with different functions have been developed, such as polymer composites [16,17], porous silicate [18], graphene oxide [19], sisal fiber felt [20], aerogels [21], clay@carbon composite [22], etc. Many synthetic materials show very high adsorption capacities due to their unique pore structure and rich functional groups.…”

Section: Introductionmentioning

confidence: 99%

Biopolymer Meets Nanoclay: Rational Fabrication of Superb Adsorption Beads from Green Precursors for Efficient Capture of Pb(II) and Dyes

Qi,

Wang,

Zhang

et al. 2024

Nanomaterials

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Renewable, green, and safe natural biopolymer-derived materials are highly desired for the purification of pollutants, but significantly improving their performance without the introduction of additional harmful chemicals remains a huge challenge. Based on the concept of “structure optimization design,” environment-friendly composite beads (named SA/PASP/RE) with excellent adsorption performance and recyclability were rationally constructed through a green ionic crosslinking route, using the completely green biopolymer sodium alginate (SA), sodium salt of polyaspartic acid (PASP), and the natural nanoclay rectorite (RE) as starting materials. The nano-layered RE was embedded in the polymer matrix to prevent the polymer chain from becoming over-entangled so that more adsorption sites inside the polymer network were exposed, which effectively improved the mass transfer efficiency of the adsorbent and the removal rate of contaminants. The composite beads embedded with 0.6% RE showed high adsorption capacities of 211.78, 197.13, and 195.69 mg/g for Pb(II) and 643.00, 577.80, and 567.10 mg/g for methylene blue (MB) in Yellow River water, Yangtze River water, and tap water, respectively. And the beads embedded with 43% RE could efficiently adsorb Pb(II) and MB with high capacities of 187.78 mg/g and 586.46 mg/g, respectively. This study provides a new route to design and develop a green, cost-effective, and efficient adsorbent for the decontamination of wastewater.

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Perspectives on green fabrication and sustainable utilization of adsorption materials for wastewater treatment

Wang

Wang²

2022

Chemical Engineering Research and Design

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Circular conversion of waste rectorite@dye to efficient and pH-resistant heterogeneous silicate adsorbents for cyclic and complete dye removal

Cited by 10 publications

References 73 publications

Adsorption of Indigo Carmine Dye and Copper Ion by Kaolin from Bangka Island

Adsorption of Indigo Carmine Dye and Copper Ion by Kaolin from Bangka Island

Biopolymer Meets Nanoclay: Rational Fabrication of Superb Adsorption Beads from Green Precursors for Efficient Capture of Pb(II) and Dyes

Perspectives on green fabrication and sustainable utilization of adsorption materials for wastewater treatment

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