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Chemosphere

IF: 8.09
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Ethylene dimethacrylate used as an NH3 adsorbent with high adsorption capacity and selectivity.

Published:1 April 2022 DOI: 10.1016/j.chemosphere.2022.133539 PMID: 34998851
Zhangliang Han, Haozhong Tian, Xiaobing Pang, Guoyong Song, Dezhi Sun

Abstract

NH3 molecularly imprinted polymers (NH3-MIPs) were synthesized that could successfully separate and recover NH3 during sludge aerobic composting; however, increased toluene usage during the adsorbent preparation incurred a high cost and severe environmental risks. The purpose of this study was to reduce toluene usage by optimizing the reagent composition of NH3-MIPs, based on maintaining a high NH3 adsorption capacity and selectivity. Five adsorbent groups, including NH3-MIPs, and NH3-Ethylene dimethacrylate adsorbents (NH3-EGDMA) with 0%, 75%, 90%, and 100% toluene reduction efficiencies, were prepared and tested for their adsorption performance. The results showed that NH3-EGDMA with 75% toluene reduction not only had a high NH3 adsorption capacity (104.42?mg?g-1) but also had a high separation factor for NH3/methyl sulfide (3121) and NH3/dimethyl disulfide (4597). The adsorption mechanism was identified as a chemical force between NH3 and NH3-EGDMA with a 75% toluene reduction using the analysis of the kinetic model. This study significantly reduces NH3 adsorbent cost as well as harm to the environment during the adsorbent preparation, which was beneficial to the popularization and application of this NH3 adsorbent.

Substances (4)

Related products
Procduct Name CAS Molecular Formula Supplier Price
Ammonia 7664-41-7 H3N 529 suppliers $15.00-$2840.72
Dimethyl sulfide 75-18-3 C2H6S 448 suppliers $21.00-$43575.20
Ethylene dimethacrylate 97-90-5 C10H14O4 438 suppliers $6.00-$4124.97
Dimethyl disulfide 624-92-0 C2H6S2 422 suppliers $27.90-$1330.00

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