Persulfate assisted hydrothermal processing of spirulina for enhanced deoxidation carbonization.
Carbon
Carbonization
Hydrochar
Hydrothermal processing
Persulfate
Spirulina
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Feb 2021
Feb 2021
Historique:
received:
05
11
2020
revised:
08
12
2020
accepted:
09
12
2020
pubmed:
22
12
2020
medline:
8
1
2021
entrez:
21
12
2020
Statut:
ppublish
Résumé
The influence of persulfate assisted hydrothermal carbonization (HTC) (160 °C-220 °C) of spirulina and hydrochar properties was assessed. The elementary composition and proximate analysis of hydrochar were investigated on the carbonization degree and basic fuel properties, and the surface functional groups and morphological characteristics of hydrochar were analyzed as well as thermal stability. Results suggested that persulfate assisted process enhanced the carbonization degree of hydrochar by oxygen reduction (1.53%-2.74%) and increase of C ratio, and HHVs increased 0.81-1.39 MJ/kg at temperature above 180 °C. The -OH and CO on hydrochar surface were significantly reduced, and C-(C, H) and C-(O, N) were weakened by persulfate addition and more C-H peaks was formed. Additionally, the persulfate addition enhanced the thermal stability of hydrochar by lowing the maximum mass loss rate. The result suggested that HTC can be conducted with persulfate at lower temperature for hydrochar biofuel production.
Identifiants
pubmed: 33348116
pii: S0960-8524(20)31817-4
doi: 10.1016/j.biortech.2020.124543
pii:
doi:
Substances chimiques
Biofuels
0
Carbon
7440-44-0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
124543Informations de copyright
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