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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2019.04.042
|2 doi
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|a pubmed24n0990.xml
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|a (DE-627)NLM297074377
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|a (NLM)31088670
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|a (PII)S0956-053X(19)30255-7
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Tang, Siqi
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Amino-functionalized sewage sludge-derived biochar as sustainable efficient adsorbent for Cu(II) removal
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|c 2019
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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
|b cr
|2 rdacarrier
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|a Date Completed 12.09.2019
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|a Date Revised 07.12.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2019 Elsevier Ltd. All rights reserved.
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|a Sludge biochar as promising low-cost adsorbent has increasingly gained interests, but its poor surface functionality severely undermines its adsorption capacity and selectivity. Here a facile amino functionalization strategy was first proposed to enhance the surface functionality of sewage sludge derived biochar (SSDB) via the combination of sol-gel process for mesoporous silica coating and silylation for highly selective removal of Cu(II). The prepared amino-functionalized SSDB showed excellent adsorption capacity of 74.51 mg/g at room temperature, increasing by nearly 118% with regard to the unfunctionalized SSDB, and prominent selectivity (minute separation factor SFCo, Ni, Zn/Cu) toward Cu(II) uptake. Characterizations demonstrated amine groups on the SSDB, the surface density of which reached 1.34 mg/m2. The adsorption kinetics of Cu(II) on amino-functionalized SSDB was well described by a pseudo-second order kinetic model while the adsorption isotherm data was well fitted by Sips model. The pH range in which the adsorption preferentially occurred was 3-5. The occurrence of amine group protonation undermined adsorption performance at a pH < 3. These effects of amino-functionalized SSDB toward Cu(II) uptake were a result of the grafted amine groups specifically complexing with Cu(II) in the tetrahedron. Hence, prominent adsorption performance and low-cost feedstock make amino-functionalized SSDB a sustainable adsorbent for Cu(II) removal in water resulting in a cleaner utilization of sewage sludge
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|a Journal Article
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|a Amino functionalization
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|a Biochar
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|a Cu(II) uptake
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|a Selective adsorption
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|a Sewage sludge pyrolysis
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|a Sewage
|2 NLM
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|a Waste Water
|2 NLM
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|a biochar
|2 NLM
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|a Charcoal
|2 NLM
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| 650 |
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|a 16291-96-6
|2 NLM
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| 700 |
1 |
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|a Shao, Ningning
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Chunmiao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Zuotai
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 90(2019) vom: 01. Mai, Seite 17-28
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:90
|g year:2019
|g day:01
|g month:05
|g pages:17-28
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|u http://dx.doi.org/10.1016/j.wasman.2019.04.042
|3 Volltext
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|d 90
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