| Title |
Sustainable Food Waste Management: Synthesizing Engineered Biochar for CO2 Capture |
| ID_Doc |
26419 |
| Authors |
Yuan, XZ; Wang, JY; Deng, S; Dissanayake, PD; Wang, SJ; You, SM; Yip, ACK; Li, SJ; Jeong, Y; Tsang, DCW; Ok, YS |
| Title |
Sustainable Food Waste Management: Synthesizing Engineered Biochar for CO2 Capture |
| Year |
2022 |
| Published |
|
| DOI |
10.1021/acssuschemeng.2c03029 |
| Abstract |
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 CO2 capture from a life cycle perspective. FWDEB samples were prepared by carbonization and chemical activation for CO2 adsorption. FW400-KOH600(2), carbonized at 400 degrees C and then activated at 600 degrees C with a KOH/biochar mass ratio of 2, presented the best CO2 adsorption capacities of 4.06 mmol g(-1) at 0 degrees C (1 bar) and 2.54 mmol g(-1) at 25 degrees C (1 bar) among all prepared samples. The CO2 uptake at 25 degrees C (1 bar) was affected by both micropore volume and surface area limited by narrow micropores less than 8 angstrom. Basic O- and N-functional groups were generated during the KOH activation, which are beneficial for enhancing the FWDEB-based CO2 adsorption. 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 CO2 capture 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. |
| Author Keywords |
low-carbon technology; circular economy; climate action; carbon negative; food waste upcycling |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000859079400001 |
| WoS Category |
Chemistry, Multidisciplinary; Green & Sustainable Science & Technology; Engineering, Chemical |
| Research Area |
Chemistry; Science & Technology - Other Topics; Engineering |
| PDF |
https://eprints.gla.ac.uk/277662/1/277662.pdf
|