« Previous AbstractModeling human exposure levels to airborne volatile organic compounds by the hebei spirit oil spill    Next AbstractMatrix-assisted laser desorption/ionization time-of-flight mass spectrometry of small volatile molecules using a parylene-matrix chip »

J Hazard Mater

Title:		CO(2)-cofed catalytic pyrolysis of tea waste over Ni/SiO(2) for the enhanced formation of syngas
Author(s):		Kim JH; Jung S; Park YK; Kwon EE;
Address:		"Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea. School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea. Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea. Electronic address: ekwon74@sejong.ac.kr"
Journal Title:		J Hazard Mater
Year:		2020
Volume:		20200408
Issue:
Page Number:		122637 -
DOI:		10.1016/j.jhazmat.2020.122637
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"To valorize tea waste (TW), catalytic pyrolysis was done as a practical measure for recovering energy as a form of syngas. Considering CO(2) as a reactive gas medium in place of conventional pyrolysis gas, a sustainable pyrolysis platform was established. In addition, mechanistic effectiveness of CO(2) on TW pyrolysis was examined. In the presence of CO(2), homogeneous reaction with volatile organic compounds (VOCs) derived from TW pyrolysis contributed to CO formation. To enhance the formation of syngas at low pyrolysis temperature, catalytic pyrolysis over a Ni/SiO(2) was investigated. The synergistic effects of Ni/SiO(2) catalyst and CO(2) promoted thermal cracking of VOCs and further homogeneous reaction with CO(2), thereby resulting in the substantial enhancement (28 times more) of H(2) and CO production than non-catalytic pyrolysis. It was also confirmed that CO(2) could be considered a reactive gas medium to produce biochar (34-35 wt.% yield), having competitive porosity and surface area, in comparison to that from pyrolysis in N(2). Therefore, CO(2) can be employed to build a sustainable waste conversion platform for energy and biochar production through pyrolysis instead of using N(2)"
Keywords:		*Carbon Dioxide Catalysis *Pyrolysis Silicon Dioxide Tea Biomass valorization Carbon dioxide Fuel production Thermolysis Waste-to-energy;
Notes:		"MedlineKim, Jung-Hun Jung, Sungyup Park, Young-Kwon Kwon, Eilhann E eng Research Support, Non-U.S. Gov't Netherlands 2020/04/19 J Hazard Mater. 2020 Sep 5; 396:122637. doi: 10.1016/j.jhazmat.2020.122637. Epub 2020 Apr 8"