Synergistic effect of bulking agents and biodegradation on the pyrolysis of biodried products derived from municipal organic wastes: Product distribution and biochar physicochemical characteristics

Jiao Ma, Wenwen Kong, Weiqiang Di, Zhikun Zhang, Zhuozhi Wang, Shuo Feng, Boxiong Shen and Lan Mu

Energy, 2022, vol. 248, issue C

Abstract: Derived from municipal organic wastes (MOWs), biodried products (BPs) are widely accepted as carbon-neutral and renewable energy resources. In this study, the pyrolytic products of BPs, i.e., syngas, tar and biochar, were comprehensively investigated, with a special focus on the synergistic effect of bulking agents (BAs) and the modification of biodegradation. Compared with the theoretical yields (31.12%–34.94%), the interactions of MOWs and BAs promoted biochar formation (34.65%–37.74%) during pyrolysis of raw materials (RMs). Biodegradation further enhanced the biochar yield (40.73%–49.50%) but limited the liquid yields (29.49%–38.04% vs. 39.75%–43.40%) during pyrolysis of BPs. Furthermore, biodegradation also enriched H2 in the syngas and promoted the formation of phenolic compounds (30.19%–47.83% vs. 11.08%–26.55%) in the tars during BP pyrolysis. In addition, the BP-biochar presented a higher porosity of mesopores, larger total volume (0.130–0.170 cm3/g) and pore size (4.15–4.77 nm); therefore, it had a higher methylene blue adsorption capacity than the RM-biochar (50.9–84.4 vs. 21.1–44.5 mg/g). These findings suggested that the interactive effect of BAs and the modification of biodegradation were effective in upgrading the pyrolytic products, including H2-rich syngas, phenolic-rich tar and mesoporous biochar. This study provides a promising strategy for the efficient utilization of MOWs by integrating biodrying and pyrolysis.

Keywords: Biodried product; Biodegradation; Bulking agent; Organic waste; Pyrolysis (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544222004157
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:248:y:2022:i:c:s0360544222004157

DOI: 10.1016/j.energy.2022.123512

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().