Thermodynamics and Kinetics Parameters of Eichhornia crassipes Biomass for Bioenergy

Title:Thermodynamics and Kinetics Parameters of Eichhornia crassipes Biomass for Bioenergy

Volume: 25 Issue: 2

Author(s): Ifrah Afzal, Muhammad Sajjad Ahmad, Sana Malik, Muhammad Ibrahim, Omar S. Al Ayed, Ghulam Qadir, Huda Al Doghaither and Munazza Gull*

Affiliation:

• Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21551,Saudi Arabia

Keywords: Low-cost biomass, pyrolysis, TGA-DSC, bioenergy, E. crassipes, Gibb's free energies.

Abstract: Background: Eichhornia crassipes is an aquatic plant well known for its role in soil reclamation due to the containment of valuable nutrients. Moreover, its biomass is an abundant and low-cost biological resource. Pyrolysis of a biomass offers one of the cleanest methods to harness the bioenergy stored in the biomass.

Objective: The present study was focused on evaluating the bioenergy potential of Eichhornia crassipes via pyrolysis.

Methods: Biomass of E. crassipes was collected from a municipal wastewater pond. Oven dried powdered biomass of E. crassipes was subjected to pyrolysis at three heating rates including 10, 30 and 50 °C min-1 in a simultaneous Thermogravimetry–Differential Scanning Calorimetry analyzer under an inert environment containing nitrogen. Data obtained were subjected to isoconversional models of Kissenger-Akahira-Sunose (KSA) and Flynn–Wall–Ozawa (FWO) to understand the reaction chemistry.

Results: Kinetic parameters have shown that the pyrolysis followed first-order reaction kinetics. The average values of activation energies (129.71-133.03 kJ mol-1) and thermodynamic parameters including high heating values (18.12 MJ kg-1), Gibb's free energies (171-180 kJ mol-1) and enthalpy of reaction (124-127 kJ mol-1) have shown the remarkable bioenergy potential of this biomass.

Conclusion: This low-cost biomass may be used to produce liquids, gases, and biochar in a costefficient and environmentally friendly way via pyrolysis or co-pyrolysis in the future.

Cite this article as:

Afzal Ifrah , Ahmad Sajjad Muhammad , Malik Sana , Ibrahim Muhammad , Al Ayed S. Omar, Qadir Ghulam , Al Doghaither Huda and Gull Munazza *, Thermodynamics and Kinetics Parameters of Eichhornia crassipes Biomass for Bioenergy, Protein & Peptide Letters 2018; 25 (2) . https://dx.doi.org/10.2174/0929866525666180122104237