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231225s2020 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2020.167
|2 doi
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|a pubmed25n1039.xml
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|a (NLM)32597399
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|a DE-627
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|e rakwb
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|a eng
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|a Wang, Jun
|e verfasserin
|4 aut
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|a Biosorption of hexavalent chromium from aqueous solution by polyethyleneimine-modified ultrasonic-assisted acid hydrochar from Sargassum horneri
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 30.06.2020
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|a Date Revised 09.01.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a In this study, an efficient route to synthesizing polyethyleneimine-modified ultrasonic-assisted acid hydrochar (PEI-USAH) is developed and reported. Ultrasonic irradiation technique was used as surface modification method to shorten the crosslinking reaction for hydrochar and polyethyleneimine (PEI). The PEI-USAH showed an excellent adsorption capacity for Cr(VI) from aqueous solution. The physicochemical properties of this PEI-modified adsorbent were comparatively characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller analysis and CNHS analysis. The effects of contact time, initial pH, and biosorbent dose on adsorption capacities were investigated. The batch adsorption experiments showed that PEI-USAH possessed the maximum adsorption capacities of 94.38 mg/g and 330.84 mg/g for initial Cr(VI) concentration of 100 mg/L and 500 mg/L, respectively. Furthermore, this adsorption process could be fitted to Langmuir adsorption and described by the pseudo second order kinetic model. Based on the above findings, PEI-USAH could be used as a potential adsorbent for removal of Cr(VI) from wastewater
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|a Journal Article
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|a Water Pollutants, Chemical
|2 NLM
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|a Chromium
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|a 0R0008Q3JB
|2 NLM
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|a chromium hexavalent ion
|2 NLM
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|a 18540-29-9
|2 NLM
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|a Polyethyleneimine
|2 NLM
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|a 9002-98-6
|2 NLM
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| 700 |
1 |
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|a Xie, Qinglong
|e verfasserin
|4 aut
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|a Li, Ao
|e verfasserin
|4 aut
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|a Liu, Xuejun
|e verfasserin
|4 aut
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|a Yu, Fengwen
|e verfasserin
|4 aut
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| 700 |
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|a Ji, Jianbing
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 81(2020), 6 vom: 30. März, Seite 1114-1129
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnas
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| 773 |
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|g volume:81
|g year:2020
|g number:6
|g day:30
|g month:03
|g pages:1114-1129
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|u http://dx.doi.org/10.2166/wst.2020.167
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