One-step efficient separation of heavy/light oils, dyes and water by simple filtration with a 3D architecture of functional mesh and sisal fiber felt

Wang, Yiwen; Liu, Xiangyu; He, Qingdong; Lu, Hang; Guo, Fang; Zhang, Yujie; Wang, Wenbo

doi:10.1016/j.seppur.2022.120461

Cited by 11 publications

(1 citation statement)

References 77 publications

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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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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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Reconstruction of Metal Ions Extracted from Coal Gangue to Synthesize Cost‐effective Adsorbent for Highly Efficient Removal of Pollutants

Zhao

Zhang

Feng

et al. 2023

Chemistry An Asian Journal

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An emerging "one stone, three birds" strategy was proposed to realize the value-added disposal of solid waste coal gangue (CG), the synthesis of superb adsorbent and the efficient decontamination of pollutants (i. e., dyes, heavy metals). In this process, the metal ions extrated from calcined coal gangue (CCG) was reconstituted by a one-step hydrothermal process to yield porous polymetallic silicate adsorbent (named HECCGA8h). The adsorbent has a high adsorption capacity of 270.27 and 185.53 mg/g for methylene blue (MB) and Cd(II), respectively. In the actual waters, the removal rate of MB by this adsorbent reaches 99.8% (in Yangtze River water) and 99.42% (in Seawater), and the removal rate of Cd(II) reaches 99.11% (in Yangtze River water) and 92.52% (in Seawater), respectively. Thermokinetic analysis showed that the adsorption of MB by HECCGA8h is spontaneous and endothermic with increased entropy, and the adsorption of Cd(II) is spontaneous and exothermic. The adsorption of MB is mainly driven by synergism of hydrogen bond, electrostatic attraction and ion exchange, and the adsorption of Cd(II) is mainly driven by the complexation and ion exchange between the surface group of the adsorbent and Cd(II). This research provides a new way for the realization of "treating waste with waste".

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Multifunctional materials with controllable superwettability for oil–water separation and removal of pollutants: Design, emerging applications, and challenges

Wang

2023

Carbon Neutralization

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The water pollution problem caused by large-scale industrial activity is becoming increasingly serious, which not only poses a major threat to the ecosystem and human health but also seriously impedes the green and sustainable development of modern society. It is urgent to efficiently purify stubborn wastewater containing oils and other pollutants to eliminate their harm to human and environment. Therefore, it is desirable to develop multifunctional materials that can simultaneously remove oil and various pollutants or microorganisms by filtration or absorption methods to meet the practical demand for highly effective purification of wastewater with complex components. This paper summarizes the latest research progress on the "oil

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One-step efficient separation of heavy/light oils, dyes and water by simple filtration with a 3D architecture of functional mesh and sisal fiber felt

Cited by 11 publications

References 77 publications

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

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

Reconstruction of Metal Ions Extracted from Coal Gangue to Synthesize Cost‐effective Adsorbent for Highly Efficient Removal of Pollutants

Multifunctional materials with controllable superwettability for oil–water separation and removal of pollutants: Design, emerging applications, and challenges

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