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Separable amino-functionalized biochar/alginate beads for efficient removal of Cr(VI) from original electroplating wastewater at room temperature
Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, China.
Research Academy of Non-metallic Mining Industry Development, Materials and Environmental Engineering College, Chizhou University, Chizhou, China.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China.
Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, China.
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2022 (Engelska)Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 373, artikel-id 133790Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

An alginate gel bead composite adsorbent with polyethyleneimine (PEI) as a surface modifier and Eichhornia crassipes (EC) biochar, known as EC-alg/PEI-3, was added internally to the adsorb Cr(VI) from an aqueous environment. The functionalized gel beads were characterized using SEM, XPS, FTIR, and other techniques. The maximum adsorption capacities of EC-alg/PEI-3 were 714.3 mg g−1 at 10 °C and 769.2 mg g−1 at 25 °C. In the treatment of highly concentrated electroplating wastewater, EC-alg/PEI-3 can be dosed at 1.4 g L−1 to reduce the concentration of Cr(VI) to below 0.05 ppm. EC-alg/PEI-3 maintained a competitive adsorption capacity after six cycles. This spherical adsorbent material is easy to prepare, has a very high adsorption capacity, is environmentally friendly, and can be easily recycled. The EC-alg/PEI-3 gel beads are promising for the treatment of industrial wastewater.

Ort, förlag, år, upplaga, sidor
Elsevier, 2022. Vol. 373, artikel-id 133790
Nyckelord [en]
Biochar, Hexavalent chromium removal, High capacity, Polyethyleneimine modification, Room temperature adsorption, Sodium alginate gel beads
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Identifikatorer
URN: urn:nbn:se:umu:diva-199369DOI: 10.1016/j.jclepro.2022.133790ISI: 000863089600004Scopus ID: 2-s2.0-85137177735OAI: oai:DiVA.org:umu-199369DiVA, id: diva2:1709201
Forskningsfinansiär
Vetenskapsrådet, 2017–04862Vetenskapsrådet, 2021–04629
Anmärkning

Errata: Yingnan He, Jianbing Chen, Jiapei Lv, Yimin Huang, Shuxing Zhou, Wenyan Li, Yongtao Li, Fengqin Chang, Hucai Zhang, Thomas Wågberg, Guangzhi Hu, Corrigendum to "Separable amino-functionalized biochar/alginate beads for efficient removal of Cr (VI) from original electroplating wastewater at room temperature". Journal of Cleaner Production, Volume 412, 2023, 137375. DOI: 10.1016/j.jclepro.2023.137375

Tillgänglig från: 2022-11-08 Skapad: 2022-11-08 Senast uppdaterad: 2025-02-10Bibliografiskt granskad

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