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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2019.08.021
|2 doi
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|a pubmed24n1005.xml
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|a (NLM)31568977
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|a (PII)S0956-053X(19)30539-2
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|a eng
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| 100 |
1 |
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|a Liu, Lingqin
|e verfasserin
|4 aut
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|a Adsorption characteristics and mechanism of Pb(II) by agricultural waste-derived biochars produced from a pilot-scale pyrolysis system
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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
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|2 rdacarrier
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|a Date Completed 21.10.2019
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|a Date Revised 22.10.2019
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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 The objective of this study was to investigate the feasibility of removing Pb2+ by pilot-scale fluidized bed biochar, and then to put forward an industrial-scale fluidized bed pyrolysis progress of cogeneration of biochar and high-temperature gas. Corn stalk biochars (CSBs) were prepared at 400-600 °C, in which the maximum Pb2+adsorption capacity (Qm) of CSB450 is 49.70 mg⋅g-1 at the optimal condition. Adsorption isotherms, kinetics, and thermodynamics were determined, and Pb2+-loaded biochar was analyzed by fourier transform infrared spectroscopy (FTIR), x-ray photoelectron spectroscopy (XPS), x-ray diffraction (XRD) and scanning electron microscope with energy dispersive spectrometer (SEM-EDS). Ion exchange, complexation and mineral precipitation together contributed to Pb2+ adsorption on CSBs. For high-temperature CSBs with fewer oxygen functional groups (OFGs) and stronger aromatization, Pb2+ adsorption by ion exchange and functional group complexation was reduced. The mineral precipitationwas formed during the adsorption process. Using the pilot-scale fluidized bed in this study, the carbon yield per year would achieve 31.79 t, and about 1.58 t of Pb2+ would be adsorbed according to the adsorption capacity at the pyrolytic temperature of 450 °C.The results are beneficial to screen for effective biochar as a cost-effective industrial adsorbent to remove Pb2+ in contaminated water
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|a Journal Article
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|a Adsorption
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|a Biochar
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|a Corn stalk
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|a Fluidized bed pyrolysis
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|a Lead
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|a biochar
|2 NLM
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|a Charcoal
|2 NLM
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|a 16291-96-6
|2 NLM
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|a Lead
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|a 2P299V784P
|2 NLM
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| 700 |
1 |
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|a Huang, Yaji
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Shuping
|e verfasserin
|4 aut
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| 700 |
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|a Gong, Yan
|e verfasserin
|4 aut
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| 700 |
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|a Su, Yinhai
|e verfasserin
|4 aut
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|a Cao, Jianhua
|e verfasserin
|4 aut
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| 700 |
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|a Hu, Huajun
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 100(2019) vom: 05. Dez., Seite 287-295
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|x 1879-2456
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|g volume:100
|g year:2019
|g day:05
|g month:12
|g pages:287-295
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|u http://dx.doi.org/10.1016/j.wasman.2019.08.021
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