Optimized synthesis of a core-shell structure activated carbon and its adsorption performance for Bisphenol A

Endocrine disruptors (EDCs) are widely detected in water resources owing to the abuse of plastic products, posing a serious global concern. Unfortunately, the rapid, effective, and economical removal of trace EDCs from water remains a significant challenge. Herein, a novel adsorptive membrane (PVPM) with excellent recyclability and stability is prepared by the UV‐initiated grafting of poly(N‐vinylpyrrolidone) (PNVP) onto the surface of polypropylene fibrous membrane (PPM). The PVPM exhibits high flux, low‐pressure drop, and excellent adsorption performance. It can efficiently capture trace (10 µg L−1) EDCs with a removal efficiency of 99%. Notably, the adsorption performance of the PVPM remains unchanged even in river water. A mechanism for the adsorption is proposed based on adsorption kinetics and thermodynamics. Specifically, dynamic hydrophobic microdomains are generated between amphiphilic PNVP and EDCs and form co‐aggregates on the PPM substrate. This co‐aggregation is responsible for the large adsorption capacity for EDCs. A large decrease in the free energy (−16.65 kJ mol−1) of the adsorption process provides additional evidence for the strong adsorption affinity of the PVPM to EDCs. This study introduces a new pathway for designing low‐cost and high‐performance membrane adsorbents for prompt and efficient capture of trace EDCs from water.

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“…d) Comparison of Gibbs free energy (ΔG°) of the PVPM and different kinds of adsorbents reported in the literature. [ 36,46–50 ]…”

Section: Resultsmentioning

confidence: 99%

Co‐Aggregation Induced by Amphiphilic Membrane Interface for the Capture of Trace Endocrine Disruptors from Water

Ouyang

Gui

Liu

et al. 2022

Adv Materials Inter

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“…Thus, the use of fortified pelletfeeds in the diets for rabbits contributes to the improvement of the physiological status of rabbits and the increase in growth performanceindicators, and also positively affects the digestion processes and the safety of the fattened young stock. The analysis of the chemical composition of meat obtained from rabbits of the control and experimental groups showed that the dietary supplements use promotes the accumulation of protein substances in the muscle tissues, which provides 8th Scientific and Practical Conference opportunities for the introduction of these feedingrations into industrial rabbit breeding [8][9][10][11][12][13][14][15] in order to obtain the finished product that meets the safety and environmental requirements.…”

Section: Discussionmentioning

confidence: 99%

New Pellet Feeds for Rabbits with a High Content of Nutrients and With the Addition of Dietary Supplements

Shevtsov

Дранников

Vostroilov

et al. 2022

KLS

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This research presented the pellet feed production line. Three pellet feed formulasfor young stock rabbits (28-135 days old) were developed with the addition of experimental dietary supplements grouped into the following protein green complexes (PGC):PGC-92-1including thе following supplements- dried herbal pulp from red clover, herbal alfalfa meal, and Sporotherminprobiotic; PGC-92-2 including the following supplements - protein feed concentrate from wheat stillage filtrate (syrup), herbal alfalfa meal, and Sporothermin probiotic; PGC-92-3 including the following supplements – PGC from red clover, herbal alfalfa meal,andSporothermin probiotic. These were compared with feed formulated without dietary supplements (PGC-92 (Control)). The nutritional value of the concentrate feeds met the requirements assigned for this group of animals. The storage of the formulatedconcentrate feeds took place in industrial conditions (the floor store) in paper bags of 30 kg per group at the temperature of 18-20 ∘C and the relative humidity of 65-70%. Due to itsmoisture content exceeding the standard requirements, the check concentrate feed (Control) revealed a higher content of fungal and bacterial microflora. The fat acidityvalue and the total acidity increased, which indicated the instability of this batch of concentrate feed during storage. The experimental batches of concentrate feed had a stablequality and retained good quality throughout the testing period. The testing of the effects of the studied complexes in fattening young stock rabbits was carried out on the premises of the Lipetsk Rabbit LLC industrial complex with 2000 rabbits. The use ofall-in-onepellet feedsformulated with the addition ofdietary supplements made it possible to increase the slaughter yield by 3.62%, 4.45% and 3.96%, while reducing feed intake per 1 kg of slaughter mass by 0.72 ECU, 0.38 ECU and 0.88 ECU. There was an increase in profit of 17725.25rubles, 16114.38 rubles and 14168.55 rubles, and an increase in the level of profitability by 45.93%, 41.26% and 31.24%, which resulted from a highersafety andgrowth performance of the raised rabbits. Keywords: concentrate feeds, pellet feeds, dietary supplements, protein green complex, feed for rabbits, growth performance

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“…To address these issues, our group synthesized novel recyclable AC materials (coreshell structured powdered and granulated AC, i.e., CSAC and CSGAC) recently. The results indicated that pharmaceuticals and personal care products (PPCPs) could be efficiently removed from an aqueous solution by these composites (Ndagijimana et al, 2020(Ndagijimana et al, , 2019a(Ndagijimana et al, , 2019b. In the meantime, the material further presented a good regeneration and recover-ability.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, based on the previous studies (Ndagijimana et al, 2020(Ndagijimana et al, , 2019a(Ndagijimana et al, , 2019b, the objectives of this work were as follows: (i) to compare the performance of CSAC, CSGAC, PAC, PAC-core, GAC, and GAC-core in adsorbing mercaptans; (ii) to evaluate and compare the regeneration and recover-ability of CSAC, CSGAC, PAC, PAC-core, GAC, and GAC-core; (iii) to explore interaction mechanisms via investigating the adsorption kinetics, isotherms, and surface composition of adsorbents before and after adsorption; (ⅳ) to test effects of coexisting mercaptans on the adsorption performance. This work is expected to be in favor of providing an effective strategy for mercaptans' removal from fuel.…”

Section: Introductionmentioning

confidence: 99%

Adsorption performance and mechanisms of mercaptans removal from gasoline oil using core-shell AC-based adsorbents

Ndagijimana

Liu

et al. 2021

Environ Sci Pollut Res

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Sulfur compound detection such as mercaptans in liquid fuels is undesirable because sulfur is the main sourcing emission of sulfur oxide (SO x ) into the air. The use of activated carbon (AC) has proven to efficiently remove mercaptans. In the meantime, it is limited by the generation of the second pollution in oil, and the difficulties of recovery and regeneration. To address these issues, a core-shell structured AC with high mechanical strength and big intra-particles space were synthesized and demonstrated to efficiently remove organic pollutants from an aqueous solution without generation of the second pollution in our previous work. However, the performance, characteristics, and mechanism of mercaptans adsorption from gasoline oil by core-shell structured AC was still unclear. In this study, the mercaptans adsorption behaviors using core-shell powdered activated carbon (CSAC) and core-shell granulated activated carbon (CSGAC), along with raw PAC, PAC-core, raw GAC, and GAC-core were carried out. The results showed that both the CSAC and CSGAC adsorbents effectively removed sulfur-based pollutants and were provided with good recovery and recyclability without second pollution in gasoline oil. The CSGAC exhibited a higher mercaptans removal efficiency compared to those of CSAC as a result of the bigger intra-particles space. PAC-based adsorbents, presented the shrinking of removal efficiency after regeneration. The Pseudo-second-order kinetics and Langmuir isotherms models were dominated for mercaptans adsorption by both CSAC and CSGAC. Furthermore, the interactions between mercaptans and the composites were probably ascribed to the Van der Waals force, hydrophobic compatibility, pore texture, and π-π dispersion interaction.

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Optimized synthesis of a core-shell structure activated carbon and its adsorption performance for Bisphenol A

Cited by 54 publications

References 55 publications

Co‐Aggregation Induced by Amphiphilic Membrane Interface for the Capture of Trace Endocrine Disruptors from Water

Co‐Aggregation Induced by Amphiphilic Membrane Interface for the Capture of Trace Endocrine Disruptors from Water

New Pellet Feeds for Rabbits with a High Content of Nutrients and With the Addition of Dietary Supplements

Adsorption performance and mechanisms of mercaptans removal from gasoline oil using core-shell AC-based adsorbents

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