• MUTHU RAJ S
• RAJ KUMAR P
• SUBIN RAJ M
• SUBBIAH JEEVA

The growing demand for energy and the environmental concerns linked to fossil fuels have accelerated the search for sustainable alternatives. Biomass, an abundant and renewable resource, is a promising feedstock for bioenergy production. Among thermo-chemical conversion techniques, pyrolysis has gained attention for its ability to generate bio-oil, biochar, and syngas. Co-pyrolysis, involving the simultaneous decomposition of multiple biomass types, can enhance process efficiency and product quality through synergistic effects. In this study, co-pyrolysis of Tender Coconut Waste (TCW, high ash) and Palmyra Palm Fruit Waste (PPFW, low ash) was carried out using thermogravimetric analysis (TGA). Blends were prepared in mass ratios of 0:100, 50:50, and 100:0 (PPFW:TCW). The kinetic parameters were determined using the Kissinger–Akahira–Sunose (KAS) and Friedman models. Results revealed that the 50:50 blend reduced the average activation energy from 61.81 kJ/mol (pure TCW) to 54.09 kJ/mol, indicating improved reactivity due to the synergistic interaction of the feedstocks. The findings demonstrate that PPFW is a more suitable biomass feedstock compared to TCW, and the 50:50 blend provides an optimal balance for enhanced bioenergy production. This work highlights the potential of co-pyrolysis as an effective strategy for agro-waste valorization and renewable energy generation.

Co-pyrolysis, Tender Coconut Waste (TCW), Palmyra Palm Fruit Waste (PPFW), Thermogravimetric Analysis (TGA), Kinetic Modeling, Kissinger Akahira Sunose (KAS), Friedman Model, Activation Energy, Biomass Conversion, Renewable Energy.

"THERMAL CO-PYROLYSIS OF TENDER COCONUT AND PALMYRA PALM FRUIT WASTES: PRODUCT CHARACTERIZATION AND KINETIC MODELING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 8, page no.g73-g78, August-2025, Available :http://www.jetir.org/papers/JETIR2508611.pdf

"THERMAL CO-PYROLYSIS OF TENDER COCONUT AND PALMYRA PALM FRUIT WASTES: PRODUCT CHARACTERIZATION AND KINETIC MODELING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 8, page no. ppg73-g78, August-2025, Available at : http://www.jetir.org/papers/JETIR2508611.pdf