Szczegóły publikacji
Opis bibliograficzny
Effects of intrinsic and external potassium on biochar structure evolution in volatile-char interactions during biomass pyrolysis / Zhiwu Tan, Tianyu Lu, Wojciech JERZAK, Huimin Huang, Dongjing Liu, Xing Xie, Qingfa Zhang, Zhong Ma, Mingfeng Wang, Weiwei Liu, Shihong Zhang, Haiping Yang, Bin Li // Journal of Analytical and Applied Pyrolysis ; ISSN 0165-2370 . — 2026 — vol. 193 pt. 1 art. no. 107472, s. 1–8. — Bibliogr. s. 7–8, Abstr. — Publikacja dostępna online od: 2025-11-11
Autorzy (13)
- Tan Zhiwu
- Lu Tianyu
- AGHJerzak Wojciech
- Huang Huimin
- Liu Dongjing
- Xie Xing
- Zhang Qingfa
- Ma Zhong
- Wang Mingfeng
- Liu Weiwei
- Zhang Shihong
- Yang Haiping
- Li Bin
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 164577 |
|---|---|
| Data dodania do BaDAP | 2026-01-23 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jaap.2025.107472 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Analytical and Applied Pyrolysis |
Abstract
This study explores the effects of intrinsic and external potassium (K) on structural evolution of biochar in volatile-char interactions during wheat straw pyrolysis using fixed-bed reactor. The results showed that the removal of intrinsic K from biochar through acid-washing reduced its reactivity in volatiles cracking, but the exposure of more carbon structures on biochar surface enhanced its self-reforming with volatile compounds (e.g., H2O and CO2), resulting in increased weight loss. Intrinsic K exhibited a strong catalytic effect on biochar self-reforming, contributing to significant weight loss, it was not easily volatilized and became enriched during the interactions. External K (from KOH impregnation) predominantly accumulated on biochar surface and was more prone to volatilization during the interactions. At low dosages (ABC-1K), surface coverage by KOH reduced biochar weight loss, but weight loss increased again with higher KOH loading during the interactions. External K in biochar showed a stronger ability to crack volatiles, reducing oxygen-containing functional groups (e.g., -OH, -COO, and phenolic C-OH) and potentially converting small aromatic rings into larger ones in biochar. This study further deepens the fundamental understanding of K in biochar in regulating volatile-char interactions during biomass pyrolysis.
