Evaluation of hydrothermally carbonized alternative biomass (Lepironia articulata) as a source of alternative energy and adsorbent
Keywords:Hydrothermal carbonization, Dehydration, Decarboxylation, Demethanation
Lepironia articulata (LA) widely available wetland biomass was successfully converted into a solid coal-like material called hydrochar. Hydrothermal carbonization (HTC) being a technically-attractive thermal conversion process of biomass into hydrochar at mild conditions was adopted in this study. The effect of process parameters on the physicochemical properties and the yield of hydrochar was studied by varying carbonization temperature and residence time over the range of 180, 200, 220, 240 oC and 6, 12, 24 h, respectively. With an increase in temperature, the hydrochar yield decreased rapidly from 68.8% at 180 oC to 55.2% at 240 oC. In addition, the increase in carbon percentage was observed with an increase in temperature from 10.28% (180 oC) to 38.69 %( 240 oC). The H/C and O/C atomic ratios reduced from 1.392 and 0.541 to 1.072 and 0.271, respectively, which was typically related to decarboxylation, demethanation, and dehydration reactions. Hydrochar obtained was characterized appropriately, i.e., proximate analysis, TGA, HHV, FT-IR and BET. The highest surface area (SBET) of hydrochar obtained was 72.2 m2/g. The maximum iodine number calculated was 220 mg/g. HHV of hydrochar was in the range of 22.52 to 25.1 MJ/kg. Overall results conclude the effectiveness of LA in the field of environmental remediation, sustainable and alternative energy.
How to Cite
LicenseAuthors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).