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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2019.12.039
|2 doi
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|a pubmed24n1017.xml
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|a (DE-627)NLM30510778X
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|a (NLM)31911374
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|a (PII)S0956-053X(19)30793-7
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wang, Li
|e verfasserin
|4 aut
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|a A novel substitution-based method for effective leaching of chromium (III) from chromium-tanned leather waste
|b The thermodynamics, kinetics and mechanism studies
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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 19.05.2020
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|a Date Revised 19.05.2020
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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 A substitution-based method for chromium (III) leaching from chromium-tanned leather waste (CTLW) without destroying the collagen matrix was proposed. The leaching efficiency of Cr (III) from CTLW using different organic salts was investigated and sodium oxalate (OA-2Na) was considered to be the best Cr leaching agent. The effects of leaching time, temperature, pH, concentration, shaking speed and leather thickness on Cr leaching rate were investigated and a Cr leaching rate of 98% was obtained. Thermodynamic parameters (ΔG0 < 0, ΔH0 > 0 and ΔS0 > 0) were obtained in this study. The kinetic data fitted well with the first-order kinetic equation. The apparent activation energy (Ea = 82.9563 kJ/mol) and the frequency factor (A = 2.96 × 1011) were obtained. The collagen matrix remained intact after Cr leaching by the characterization of SEM and FTIR. A substitution mechanism was proposed that Cr (III) in CTLW was complexed with oxalate and dissociated from the collagen matrix
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|a Journal Article
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|a Chromium (III)
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|a Leaching kinetics
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|a Leather waste
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|a Sodium oxalate
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|a Substitution mechanism
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|a Thermodynamics
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|a Chromium
|2 NLM
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|a 0R0008Q3JB
|2 NLM
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| 700 |
1 |
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|a Chen, Ming
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Jun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jin, Yang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yuqiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Yubin
|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 103(2020) vom: 15. Feb., Seite 276-284
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:103
|g year:2020
|g day:15
|g month:02
|g pages:276-284
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|u http://dx.doi.org/10.1016/j.wasman.2019.12.039
|3 Volltext
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