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Chemosphere

Title:		Surface modified and activated waste bone char for rapid and efficient VOCs adsorption
Author(s):		Yang Y; Sun C; Lin B; Huang Q;
Address:		"State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China. Electronic address: hqx@zju.edu.cn"
Journal Title:		Chemosphere
Year:		2020
Volume:		20200511
Issue:
Page Number:		127054 -
DOI:		10.1016/j.chemosphere.2020.127054
ISSN/ISBN:		1879-1298 (Electronic) 0045-6535 (Linking)
Abstract:		"In this work, very efficient VOCs adsorbent was developed from waste bovine bone. After pyrolysis at 450 degrees C, the bone char was treated by H(3)PO(4) for surface modification and activated by K(2)CO(3) respectively. The prepared materials were characterized by N(2) adsorption isotherms, SEM, FT-IR, and XPS. Adsorption/desorption and regeneration behavior of VOCs were also studied. Results showed that H(3)PO(4) modification can effectively accelerate the adsorption process and after K(2)CO(3) activation, a new hierarchical pore structure was found with an ultrahigh total pore volume of 2.807 cm(3)/g. The specific adsorption capacity for typical VOC reached approximately 13.03 mmol/g which is much higher than literature data under the same condition. Static toluene adsorption test on the prepared activated bone-char revealed that the hierarchical structure has provided abundant adsorption sites and the adsorption behavior can be well described by the pseudo-second-order model. The dynamic/static adsorption ratio increased from 70.31% to 78.62% due to less mass transfer resistance by surface modification"
Keywords:		"Adsorption Animals Bone and Bones/chemistry Cattle Charcoal/*chemistry Pyrolysis Spectroscopy, Fourier Transform Infrared Toluene/chemistry Volatile Organic Compounds/*chemistry Biochar Surface modification Waste bone;"
Notes:		"MedlineYang, Yuxuan Sun, Chen Lin, Bingcheng Huang, Qunxing eng England 2020/05/26 Chemosphere. 2020 Oct; 256:127054. doi: 10.1016/j.chemosphere.2020.127054. Epub 2020 May 11"