Sequential Production of Levulinic Acid and Supercapacitor
Electrode Materials from Cassava Rhizome through an Integrated Biorefinery
Process
Posted on 2021-06-01 - 20:45
In
this study, thesequential production of levulinic acid (LA)
and supercapacitor electrode materials from cassava rhizome (CR) was
investigated through an integrated biorefinery process. The CR was
pretreated in KOH solution at 120 °C for 1 h before valorization
to LA via a catalytic hydrothermal process in 0.1–0.7 M HCl
solution at 150–200 °C for 1–3 h. The maximum LA
yield (19.62 wt %) was obtained under experimental conditions of 200
°C for 1 h in 0.4 M HCl. Thereafter, the hydrochar coproduct
was further converted into porous activated carbon (AC) for use in
supercapacitor electrodes. The AC was produced through a chemical
activation process at 800 °C for 2 h using ZnCl2 and
melamine as an activating agent and nitrogen source, respectively.
The best AC sample for producing electrodes was obtained when using
a hydrochar/ZnCl2/melamine ratio of 1:3:1. This species
had the maximum specific capacitance (SC) of 192.5 and 173.0 F g–1 for three- and two-electrode systems, respectively.
Moreover, the electrode material exhibits excellent cycling stability
without a reduction in SC over 10,000 cycles at 1 A g–1 current density.
CITE THIS COLLECTION
DataCiteDataCite
3 Biotech3 Biotech
3D Printing in Medicine3D Printing in Medicine
3D Research3D Research
3D-Printed Materials and Systems3D-Printed Materials and Systems
4OR4OR
AAPG BulletinAAPG Bulletin
AAPS OpenAAPS Open
AAPS PharmSciTechAAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität HamburgAbhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)ABI Technik (German)
Academic MedicineAcademic Medicine
Academic PediatricsAcademic Pediatrics
Academic PsychiatryAcademic Psychiatry
Academic QuestionsAcademic Questions
Academy of Management DiscoveriesAcademy of Management Discoveries
Academy of Management JournalAcademy of Management Journal
Academy of Management Learning and EducationAcademy of Management Learning and Education
Academy of Management PerspectivesAcademy of Management Perspectives
Academy of Management ProceedingsAcademy of Management Proceedings
Academy of Management ReviewAcademy of Management Review
Phachwisoot, Gittisak; Nakason, Kamonwat; Chanthad, Chalathorn; Khemthong, Pongtanawat; Kraithong, Wasawat; Youngjan, Saran; et al. (2021). Sequential Production of Levulinic Acid and Supercapacitor
Electrode Materials from Cassava Rhizome through an Integrated Biorefinery
Process. ACS Publications. Collection. https://doi.org/10.1021/acssuschemeng.1c01335