TY - JOUR
T1 - Sustainable Food Waste Management
T2 - Synthesizing Engineered Biochar for CO2Capture
AU - Yuan, Xiangzhou
AU - Wang, Junyao
AU - Deng, Shuai
AU - Dissanayake, Pavani Dulanja
AU - Wang, Shujun
AU - You, Siming
AU - Yip, Alex C.K.
AU - Li, Shuangjun
AU - Jeong, Yoonah
AU - Tsang, Daniel C.W.
AU - Ok, Yong Sik
N1 - Funding Information:
This work was supported by a grant from the Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01475801) from Rural Development Administration, the National Research Foundation of Korea (NRF) funded by the Korean government (MSIT, No. 2021R1A2C2011734), and the National Key Research and Development Program of China under Grant No. 2017YFE0125100. This research was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (NRF-2021R1A6A1A10045235), Youth Program of the National Natural Science Foundation of China (No. 72104257), and Hong Kong Environment and Conservation Fund (Project 104/2021).
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/10/3
Y1 - 2022/10/3
N2 - Humanity needs innovative ways to combat the environmental burden caused by food waste, which is one of the critical global issues. We proposed food waste-derived engineered biochar (FWDEB) for CO2capture from a life cycle perspective. FWDEB samples were prepared by carbonization and chemical activation for CO2adsorption. FW400-KOH600(2), carbonized at 400 °C and then activated at 600 °C with a KOH/biochar mass ratio of 2, presented the best CO2adsorption capacities of 4.06 mmol g-1at 0 °C (1 bar) and 2.54 mmol g-1at 25 °C (1 bar) among all prepared samples. The CO2uptake at 25 °C (1 bar) was affected by both micropore volume and surface area limited by narrow micropores less than 8 Å. Basic O- and N-functional groups were generated during the KOH activation, which are beneficial for enhancing the FWDEB-based CO2adsorption. Moreover, a life cycle assessment was implemented to quantify the potential environmental impacts of FW400-KOH600(2), indicating that negative net global warming potential could be achieved using the FWDEB-based CO2capture approach. Owing to the environmental benefits, we highlighted its potential as a promising technical route to mitigate climate change and achieve a waste-to-resource strategy.
AB - Humanity needs innovative ways to combat the environmental burden caused by food waste, which is one of the critical global issues. We proposed food waste-derived engineered biochar (FWDEB) for CO2capture from a life cycle perspective. FWDEB samples were prepared by carbonization and chemical activation for CO2adsorption. FW400-KOH600(2), carbonized at 400 °C and then activated at 600 °C with a KOH/biochar mass ratio of 2, presented the best CO2adsorption capacities of 4.06 mmol g-1at 0 °C (1 bar) and 2.54 mmol g-1at 25 °C (1 bar) among all prepared samples. The CO2uptake at 25 °C (1 bar) was affected by both micropore volume and surface area limited by narrow micropores less than 8 Å. Basic O- and N-functional groups were generated during the KOH activation, which are beneficial for enhancing the FWDEB-based CO2adsorption. Moreover, a life cycle assessment was implemented to quantify the potential environmental impacts of FW400-KOH600(2), indicating that negative net global warming potential could be achieved using the FWDEB-based CO2capture approach. Owing to the environmental benefits, we highlighted its potential as a promising technical route to mitigate climate change and achieve a waste-to-resource strategy.
KW - carbon negative
KW - circular economy
KW - climate action
KW - food waste upcycling
KW - low-carbon technology
UR - http://www.scopus.com/inward/record.url?scp=85139726332&partnerID=8YFLogxK
U2 - 10.1021/acssuschemeng.2c03029
DO - 10.1021/acssuschemeng.2c03029
M3 - Journal article
AN - SCOPUS:85139726332
SN - 2168-0485
VL - 10
SP - 13026
EP - 13036
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
IS - 39
ER -