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RISS 인기검색어
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- 저자 : Chukwunonso O. Aniagor (검색결과 3 건)
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Tianqi Liu,Chukwunonso O. Aniagor,Marcel I. Ejimofor,Matthew C. Menkiti,Yakubu M. Wakawa,Jie Li,Rachid Ait Akbour,Pow-Seng Yap,Sie Yon Lau,Jaison Jeevanandam 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-
Recently, there is an increasing concern on dye contamination in the aquatic environment. Elimination ofdye contaminants has gained significant attention among researchers due to their potential deleteriousrisk to human health and the ecosystem. Among the treatment technologies for dye removal from thewater system, the utilization of modified graphene oxide as an adsorbent has garnered increasingresearch interest due to its superior dye adsorption capacity. Hence, this review aims to comprehensivelypresent the classifications and hazards of dyes, types of preparation methods for modified graphene oxideand recent developments in the employment of modified graphene oxide to adsorb dyes from water. Additionally, the primary objective of this review is to emphasize on adsorption performances of modifiedgraphene oxide for dye removal in an aqueous medium, specifically focusing on the adsorption kinetics,adsorption isotherms and the effect of experimental parameters. Furthermore, the pertinentchallenges, tremendous opportunities and the future outlook of modified graphene oxide to be employedas a potential aqueous dye adsorbent were also discussed.
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Chinenye Adaobi Igwegbe,Chukwunonso O. Aniagor,Stephen N. Oba,Pow-Seng Yap,Felicitas U. Iwuchukwu,Tianqi Liu,Elias Costa de Souza,Joshua O. Ighalo 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-
Acetaminophen (ACT) is an effective and widely available analgesic and antipyretic used in medical practice. It can get into water from veterinary use, medical waste and pharmaceutical effluents. The aim ofthis review was to elaborate on the recent progress on ACT adsorption from water, present the findingsin a structured written report and identify interesting new foundations for further work. ZnAl/biocharhad the highest potential of removing ACT and can adsorb more than its weight of the pollutant(qmax > 1000 mg/g). The Langmuir and Freundlich isotherm models and the pseudo-second-order kineticsmodel were best-fits in most cases (usually at R2 > 0.99 threshold). It was observed that the key mechanismsof ACT uptake are p-p interactions, hydrogen bonds and electrostatic interaction. For most of theadsorbents, a >30% ACT removal efficiency was achievable after the 4 cycles. Effects as salting-out, electrostaticscreening, and accumulation of moieties at sorbent-sorbate interfaces due to the competitiveadsorption of ions and co-pollutants are profound in the uptake of ACT from aqueous solutions. Futureperspectives were discussed in the area of process costing, adsorbent regeneration, mechanistic investigationsand fixed-bed column adsorption.
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Adsorption of ciprofloxacin from water: A comprehensive review
Chinenye Adaobi Igwegbe,Stephen N. Oba,Chukwunonso O. Aniagor,Adewale George Adeniyi,Joshua O. Ighalo 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.93 No.-
In this paper, the adsorption of Ciprofloxacin (CIP) from water in studies over the last decade wasreviewed. The purpose of this review is to analyse the vast body of literature on the subject, identify keyempiricalfindings on specific investigation domains, establish knowledge gaps and grey areas that couldserve as a foundation for other investigations by researchers and predict future perspectives in theresearch area. The highest reported adsorption capacity for CIP was 1564 mg/g for magnetic N-dopedporous carbon. The major mechanisms of CIP uptake are electrostatic interactions, p-p interactions, Hbonds,hydrophobic interactions and pore diffusion. CIP uptake was best-fit to either the Langmuir andFreundlich isotherm and the pseudo-second-order kinetic model. For most adsorbent types, reusabilityof up to 4 cycles could be achieved with good retention of uptake capacity. The review further showedthat CIP uptake in adsorption columns was majorly bestfitted to the Thomas and Yoon-Nelson models. Incompetitive adsorption scenarios, the presence of other pharmaceuticals usually decreases the uptake ofCIP. Looking to the future, studies on novel hybrid processes, adsorbent modification, compositeadsorbent development, neural network modelling, molecular simulations and used adsorbent disposaltechniques are likely to increase for CIP adsorption.
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