DOI: https://doi.org/10.61435/ijred.2026.62765
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Tea (Camellia sinensis) processing residues: Thermochemical characterization of stalks and off-grade leaves for renewable energy

1Instituto Colombiano de Normas Técnicas – ICONTEC, Bogotá, Colombia

2Department of Agronomical Engineering, Faculty of Agricultural Sciences, Universidad de Caldas, Manizales, Czech Republic

3Department of Food and BioResource Technology, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic

Received: 5 May 2026; Revised: 20 Jun 2026; Accepted: 8 Jul 2026; Available online: 18 Jul 2026; Published: 1 Sep 2026.
Editor(s): H Hadiyanto
Open Access Copyright (c) 2026 The Author(s). Published by Centre of Biomass and Renewable Energy (CBIORE)
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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Abstract

Tea (Camellia sinensis) processing generates significant quantities of solid residues, particularly stalks and off-grade leaves, which remain underutilized despite their potential as renewable energy resources. Valorization of these residues as solid biofuels could support waste reduction, local energy supply, and circular economy strategies in tea-producing regions. This study presents a thermochemical characterization of tea processing residues with emphasis on stalks and off-grade leaves. Representative samples were collected from a commercial tea processing facility in Bandung, Indonesia, and analyzed through proximate analysis to determine moisture, volatile matter, ash, and fixed carbon, and ultimate analysis to quantify carbon, hydrogen, nitrogen, sulfur, and oxygen. Higher heating value was determined by bomb calorimetry, and net calorific value was calculated to assess practical energy availability under combustion conditions. Thermal behavior was evaluated using thermogravimetric analysis and differential scanning calorimetry to characterize degradation stages and combustion stability. Results showed volatile matter contents above 70%, carbon contents between 45% and 50%, and higher heating values ranging from 16 to 19 MJ·kg⁻¹. Corresponding net calorific values ranged from 15 to 18 MJ·kg⁻¹, comparable to widely used lignocellulosic biomasses such as coffee husk and sugarcane bagasse. Thermogravimetric profiles revealed distinct devolatilization and char oxidation stages. Differences between stalks and off-grade leaves confirmed the relevance of fraction-specific evaluation. These findings demonstrate that tea processing residues represent a viable solid biofuel resource for renewable energy applications in tea-producing regions.

Keywords: Biomass conversion; Calorific value; Lignocellulosic materials; Solid biofuel; Thermal degradation
Funding: European Union’s Horizon EUSPA-2022-SPACE research and innovation actions under grant agreement No. 101131859, COMUNIDAD project.

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Section: Original Research Article
Language : EN
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  1. Abdullah, A., Ahmed, A., Akhter, P., Razzaq, A., Hussain, M., Hossain, N., Abu Bakar, M. S., Khurram, S., Majeed, K., & Park, Y.-K. (2021). Potential for sustainable utilisation of agricultural residues for bioenergy production in Pakistan: An overview. Journal of Cleaner Production, 287, 125047. https://doi.org/10.1016/j.jclepro.2020.125047
  2. Alashmawy, M. M., Hassan, H. S., Ookawara, S. A., & Elwardany, A. E. (2023). Thermal decomposition characteristics and study of the reaction kinetics of tea-waste. Biomass Conversion and Biorefinery, 13(11), 9487–9505. https://doi.org/10.1007/s13399-023-04017-y
  3. Anca-Couce, A., Sommersacher, P., Evic, N., Mehrabian, R., & Scharler, R. (2018). Experiments and modelling of NOx precursors release (NH3 and HCN) in fixed-bed biomass combustion conditions. Fuel, 222, 529–537. https://doi.org/10.1016/j.fuel.2018.03.003
  4. Aniza, R., Chen, W.-H., Kwon, E. E., Bach, Q.-V., & Hoang, A. T. (2024). Lignocellulosic biofuel properties and reactivity analyzed by thermogravimetric analysis (TGA) toward zero carbon scheme: A critical review. Energy Conversion and Management: X, 22, 100538. https://doi.org/10.1016/j.ecmx.2024.100538
  5. Apaydın Varol, E., & Mutlu, Ü. (2023). TGA-FTIR Analysis of Biomass Samples Based on the Thermal Decomposition Behavior of Hemicellulose, Cellulose, and Lignin. Energies, 16(9), 3674. https://doi.org/10.3390/en16093674
  6. Aung Zaw O, Shigeto Sudo, Khin Thuzar Win, Shibata, A., Sano, T., & Hirono, Y. (2018). Returning Tea Pruning Residue and Its Biochar Had a Contrasting Effect on Soil N2O and CO2 Emissions from Tea Plantation Soil. Atmosphere, 9(3), 109. https://doi.org/10.3390/atmos9030109
  7. Babinszki, B., Jakab, E., Terjék, V., Sebestyén, Z., Várhegyi, G., May, Z., Mahakhant, A., Attanatho, L., Suemanotham, A., Thanmongkhon, Y., & Czégény, Z. (2021). Thermal decomposition of biomass wastes derived from palm oil production. Journal of Analytical and Applied Pyrolysis, 155, 105069. https://doi.org/10.1016/j.jaap.2021.105069
  8. Beidaghy Dizaji, H., Zeng, T., Hölzig, H., Bauer, J., Klöß, G., & Enke, D. (2022). Ash transformation mechanism during combustion of rice husk and rice straw. Fuel, 307, 121768. https://doi.org/10.1016/j.fuel.2021.121768
  9. Ben Abdallah, A., Ben Hassen Trabelsi, A., Navarro, M. V., Veses, A., García, T., & Mihoubi, D. (2023). Pyrolysis of tea and coffee wastes: Effect of physicochemical properties on kinetic and thermodynamic characteristics. Journal of Thermal Analysis and Calorimetry, 148(6), 2501–2515. https://doi.org/10.1007/s10973-022-11878-4
  10. Cai, H., Zou, H., Liu, J., Xie, W., Kuo, J., Buyukada, M., & Evrendilek, F. (2018). Thermal degradations and processes of waste tea and tea leaves via TG-FTIR: Combustion performances, kinetics, thermodynamics, products and optimization. Bioresource Technology, 268, 715–725. https://doi.org/10.1016/j.biortech.2018.08.068
  11. Camargo, J. M. O., Gallego-Ríos, J. M., Neto, A. M. P., Antonio, G. C., Modesto, M., & Leite, J. T. C. (2020). Characterization of sugarcane straw and bagasse from dry cleaning system of sugarcane for cogeneration system. Renewable Energy, 158, 500–508. https://doi.org/10.1016/j.renene.2020.05.107
  12. Cavalcanti, E. J. C., Carvalho, M., & da Silva, D. R. S. (2020a). Energy, exergy and exergoenvironmental analyses of a sugarcane bagasse power cogeneration system. Energy Conversion and Management, 222, 113232. https://doi.org/10.1016/j.enconman.2020.113232
  13. Cavalcanti, E. J. C., Carvalho, M., & da Silva, D. R. S. (2020b). Energy, exergy and exergoenvironmental analyses of a sugarcane bagasse power cogeneration system. Energy Conversion and Management, 222, 113232. https://doi.org/10.1016/j.enconman.2020.113232
  14. Charis, G., Danha, G., & Muzenda, E. (2020). Characterizations of Biomasses for Subsequent Thermochemical Conversion: A Comparative Study of Pine Sawdust and Acacia Tortilis. Processes, 8(5), 546. https://doi.org/10.3390/pr8050546
  15. Chavhan, M. P., Slovák, V., Siddiqi, H., & Mucha, M. (2024). Pyrolysis of household coffee vis-à-vis tea waste: A detailed insight into physicochemical properties, kinetics, and thermodynamics study. Chemical Engineering Journal Advances, 17, 100587. https://doi.org/10.1016/j.ceja.2024.100587
  16. Dou, Q. P. (2019). Tea in Health and Disease. Nutrients, 11(4), 929. https://doi.org/10.3390/nu11040929
  17. Duarah, P., Haldar, D., Singhania, R. R., Dong, C.-D., Patel, A. K., & Purkait, M. K. (2024). Sustainable management of tea wastes: Resource recovery and conversion techniques. Critical Reviews in Biotechnology, 44(2), 255–274. https://doi.org/10.1080/07388551.2022.2157701
  18. Duque-Dussán, E., Bappah, M., Sanz-Uribe, J. R., & Nainggolan, E. A. (2025). Thermo-Chemical Characterization of Coffee Husk from a New Variety (Coffea arabica L. var. Cenicafé 1) for Biofuel Production. Scientia Agriculturae Bohemica, 1(56), 1–22. https://doi.org/10.7160/sab.2025.560101
  19. El-Sayed, S. A., Khass, T. M., & Mostafa, M. E. (2024). Thermal degradation behaviour and chemical kinetic characteristics of biomass pyrolysis using TG/DTG/DTA techniques. Biomass Conversion and Biorefinery, 14(15), 17779–17803. https://doi.org/10.1007/s13399-023-03926-2
  20. Emiola-Sadiq, T., Zhang, L., & Dalai, A. K. (2021). Thermal and Kinetic Studies on Biomass Degradation via Thermogravimetric Analysis: A Combination of Model-Fitting and Model-Free Approach. ACS Omega, 6(34), 22233–22247. https://doi.org/10.1021/acsomega.1c02937
  21. Esteves, B., Sen, U., & Pereira, H. (2023). Influence of Chemical Composition on Heating Value of Biomass: A Review and Bibliometric Analysis. Energies, 16(10), 4226. https://doi.org/10.3390/en16104226
  22. Fajobi, M. O., Lasode, O. A., Adeleke, A. A., Ikubanni, P. P., & Balogun, A. O. (2022). Investigation of physicochemical characteristics of selected lignocellulose biomass. Scientific Reports, 12(1), 2918. https://doi.org/10.1038/s41598-022-07061-2
  23. Gani, A., Erdiwansyah, Desvita, H., Munawar, E., Mamat, R., Nizar, M., Darnas, Y., & Sarjono, R. E. (2024). Comparative analysis of HHV and LHV values of biocoke fuel from palm oil mill solid waste. Case Studies in Chemical and Environmental Engineering, 9, 100581. https://doi.org/10.1016/j.cscee.2023.100581
  24. Gao, H., Zhang, D., Liu, Z., Wang, F., Su, X., Liu, W., & Yi, W. (2024). Effect of Pretreatment on the Pyrolysis Kinetics of Corn Stalk: Comparison of Inert, Oxidative, and Wet Torrefaction. BioEnergy Research, 18(1), 12. https://doi.org/10.1007/s12155-024-10811-x
  25. Güleç, F., Parthiban, A., Umenweke, G. C., Musa, U., Williams, O., Mortezaei, Y., Suk-Oh, H., Lester, E., Ogbaga, C. C., Gunes, B., & Okolie, J. A. (2024). Progress in lignocellulosic biomass valorization for biofuels and value-added chemical production in the EU: A focus on thermochemical conversion processes. Biofuels, Bioproducts and Biorefining, 18(3), 755–781. https://doi.org/10.1002/bbb.2544
  26. Guo, S., Kumar Awasthi, M., Wang, Y., & Xu, P. (2021). Current understanding in conversion and application of tea waste biomass: A review. Bioresource Technology, 338, 125530. https://doi.org/10.1016/j.biortech.2021.125530
  27. Huang, Y.-F., & Lo, S.-L. (2020). Predicting heating value of lignocellulosic biomass based on elemental analysis. Energy, 191, 116501. https://doi.org/10.1016/j.energy.2019.116501
  28. ISO. (2015). ISO 16948:2015 (ISO16948:2015; 1st edn). https://www.iso.org/standard/58004.html
  29. Ivanovski, M., Goricanec, D., Krope, J., & Urbancl, D. (2022). Torrefaction pretreatment of lignocellulosic biomass for sustainable solid biofuel production. Energy, 240, 122483. https://doi.org/10.1016/j.energy.2021.122483
  30. Jia, G. (2021). Combustion Characteristics and Kinetic Analysis of Biomass Pellet Fuel Using Thermogravimetric Analysis. Processes, 9(5), 868. https://doi.org/10.3390/pr9050868
  31. Jia, Y., Li, Z., Wang, Y., Wang, X., Lou, C., Xiao, B., & Lim, M. (2021). Visualization of Combustion Phases of Biomass Particles: Effects of Fuel Properties. ACS Omega, 6(42), 27702–27710. https://doi.org/10.1021/acsomega.1c02783
  32. Kamruzzaman, M., Shahriyar, M., Bhuiyan, A. A., Bhattacharjya, D. K., Islam, M. K., & Alam, E. (2024). Energy potential of biomass from rice husks in bangladesh: An experimental study for thermochemical and physical characterization. Energy Reports, 11, 3450–3460. https://doi.org/10.1016/j.egyr.2024.03.019
  33. Kaniapan, S., Pasupuleti, J., Patma Nesan, K., Abubackar, H. N., Umar, H. A., Oladosu, T. L., Bello, S. R., & Rene, E. R. (2022). A Review of the Sustainable Utilization of Rice Residues for Bioenergy Conversion Using Different Valorization Techniques, Their Challenges, and Techno-Economic Assessment. International Journal of Environmental Research and Public Health, 19(6), 3427. https://doi.org/10.3390/ijerph19063427
  34. Kosowska-Golachowska, M., Luckos, A., & Kijo-Kleczkowska, A. (2022). Pollutant Emissions during Oxy-Fuel Combustion of Biomass in a Bench Scale CFB Combustor. Energies, 15(3), 706. https://doi.org/10.3390/en15030706
  35. Kristanto, J., Azis, M. M., & Purwono, S. (2021). Multi-distribution activation energy model on slow pyrolysis of cellulose and lignin in TGA/DSC. Heliyon, 7(7), e07669. https://doi.org/10.1016/j.heliyon.2021.e07669
  36. Kumar, M., Upadhyay, S. N., & Mishra, P. K. (2019). A comparative study of thermochemical characteristics of lignocellulosic biomasses. Bioresource Technology Reports, 8, 100186. https://doi.org/10.1016/j.biteb.2019.100186
  37. Kumar, V., Bhat, S. A., Kumar, S., Verma, P., Badruddin, I. A., Américo-Pinheiro, J. H. P., Sathyamurthy, R., & Atabani, A. E. (2023). Tea byproducts biorefinery for bioenergy recovery and value-added products development: A step towards environmental sustainability. Fuel, 350, 128811. https://doi.org/10.1016/j.fuel.2023.128811
  38. Lachman, J., Baláš, M., Lisý, M., Lisá, H., Milčák, P., & Elbl, P. (2021). An overview of slagging and fouling indicators and their applicability to biomass fuels. Fuel Processing Technology, 217, 106804. https://doi.org/10.1016/j.fuproc.2021.106804
  39. Mandal, S., Yadav, A., Kumar, S., & Murasingh, S. (2024). An extensive review study on bioresources recovery from tea waste and its emerging applications. Waste Management Bulletin, 2(4), 155–166. https://doi.org/10.1016/j.wmb.2024.11.003
  40. Manrique, R., Vásquez, D., Ceballos, C., Chejne, F., & Amell, A. (2019). Evaluation of the Energy Density for Burning Disaggregated and Pelletized Coffee Husks. ACS Omega, 4(2), 2957–2963. https://doi.org/10.1021/acsomega.8b02591
  41. Mendoza Martinez, C. L., Saari, J., Melo, Y., Cardoso, M., de Almeida, G. M., & Vakkilainen, E. (2021). Evaluation of thermochemical routes for the valorization of solid coffee residues to produce biofuels: A Brazilian case. Renewable and Sustainable Energy Reviews, 137, 110585. https://doi.org/10.1016/j.rser.2020.110585
  42. Miao, S., Wei, Y., Chen, J., & Wei, X. (2023). Extraction methods, physiological activities and high value applications of tea residue and its active components: A review. Critical Reviews in Food Science and Nutrition, 63(33), 12150–12168. https://doi.org/10.1080/10408398.2022.2099343
  43. Míguez, J. L., Porteiro, J., Behrendt, F., Blanco, D., Patiño, D., & Dieguez-Alonso, A. (2021). Review of the use of additives to mitigate operational problems associated with the combustion of biomass with high content in ash-forming species. Renewable and Sustainable Energy Reviews, 141, 110502. https://doi.org/10.1016/j.rser.2020.110502
  44. Mofijur, M., Mahlia, T. M. I., Logeswaran, J., Anwar, M., Silitonga, A. S., Rahman, S. M. A., & Shamsuddin, A. H. (2019). Potential of Rice Industry Biomass as a Renewable Energy Source. Energies, 12(21), 4116. https://doi.org/10.3390/en12214116
  45. Motta, I. L., Miranda, N. T., Maciel Filho, R., & Wolf Maciel, M. R. (2018). Biomass gasification in fluidized beds: A review of biomass moisture content and operating pressure effects. Renewable and Sustainable Energy Reviews, 94, 998–1023. https://doi.org/10.1016/j.rser.2018.06.042
  46. Muhammed, H., Balaji, K., Tamilarasan, N., Senthil kumar, D., & Sakthivel, R. (2026). Characterization of tea factory waste biomass via TGA: Pyrolysis kinetics and thermal behavior. Chemical Thermodynamics and Thermal Analysis, 21, 100251. https://doi.org/10.1016/j.ctta.2025.100251
  47. Powrel, P. J., Dash, S., Singh, P., & Sultana, S. R. (2025). Utilization and Economic Potential of Tea Waste: A Case of Assam Tea Economy. Advances in Research, 26(5), 51–58. https://doi.org/10.9734/air/2025/v26i51464
  48. Poyilil, S., Palatel, A., & Chandrasekharan, M. (2022). Physico-chemical characterization study of coffee husk for feasibility assessment in fluidized bed gasification process. Environmental Science and Pollution Research, 29(34), 51041–51053. https://doi.org/10.1007/s11356-021-17048-7
  49. Pramanik, P., & Phukan, M. (2020). Enhanced microbial respiration due to carbon sequestration in pruning litter incorporated soil reduced the net carbon dioxide flux from atmosphere to tea ecosystem. Journal of the Science of Food and Agriculture, 100(1), 295–300. https://doi.org/10.1002/jsfa.10038
  50. Proto, A. R., Palma, A., Paris, E., Papandrea, S. F., Vincenti, B., Carnevale, M., Guerriero, E., Bonofiglio, R., & Gallucci, F. (2021). Assessment of wood chip combustion and emission behavior of different agricultural biomasses. Fuel, 289, 119758. https://doi.org/10.1016/j.fuel.2020.119758
  51. Qian, C., Li, Q., Zhang, Z., Wang, X., Hu, J., & Cao, W. (2020). Prediction of higher heating values of biochar from proximate and ultimate analysis. Fuel, 265, 116925. https://doi.org/10.1016/j.fuel.2019.116925
  52. Qian, X., Xue, J., Yang, Y., & Lee, S. W. (2021). Thermal Properties and Combustion-Related Problems Prediction of Agricultural Crop Residues. Energies, 14(15), 4619. https://doi.org/10.3390/en14154619
  53. Quispe, I., Navia, R., & Kahhat, R. (2019). Life Cycle Assessment of rice husk as an energy source. A Peruvian case study. Journal of Cleaner Production, 209, 1235–1244. https://doi.org/10.1016/j.jclepro.2018.10.312
  54. Racero-Galaraga, D., Rhenals-Julio, J. D., Sofan-German, S., Mendoza, J. M., & Bula-Silvera, A. (2024). Proximate analysis in biomass: Standards, applications and key characteristics. Results in Chemistry, 12, 101886. https://doi.org/10.1016/j.rechem.2024.101886
  55. Ramos, A., Monteiro, E., & Rouboa, A. (2022). Biomass pre-treatment techniques for the production of biofuels using thermal conversion methods – A review. Energy Conversion and Management, 270, 116271. https://doi.org/10.1016/j.enconman.2022.116271
  56. Riaza, J., Mason, P., Jones, J. M., Gibbins, J., & Chalmers, H. (2019). High temperature volatile yield and nitrogen partitioning during pyrolysis of coal and biomass fuels. Fuel, 248, 215–220. https://doi.org/10.1016/j.fuel.2019.03.075
  57. Royo, J., Canalís, P., Quintana, D., Díaz-Ramírez, M., Sin, A., & Rezeau, A. (2019). Experimental study on the ash behaviour in combustion of pelletized residual agricultural biomass. Fuel, 239, 991–1000. https://doi.org/10.1016/j.fuel.2018.11.054
  58. Sadh, P. K., Chawla, P., Kumar, S., Das, A., Kumar, R., Bains, A., Sridhar, K., Duhan, J. S., & Sharma, M. (2023). Recovery of agricultural waste biomass: A path for circular bioeconomy. Science of The Total Environment, 870, 161904. https://doi.org/10.1016/j.scitotenv.2023.161904
  59. Saleem, M. (2022). Possibility of utilizing agriculture biomass as a renewable and sustainable future energy source. Heliyon, 8(2), e08905. https://doi.org/10.1016/j.heliyon.2022.e08905
  60. Schmitt, C. C., Moreira, R., Neves, R. C., Richter, D., Funke, A., Raffelt, K., Grunwaldt, J.-D., & Dahmen, N. (2020). From agriculture residue to upgraded product: The thermochemical conversion of sugarcane bagasse for fuel and chemical products. Fuel Processing Technology, 197, 106199. https://doi.org/10.1016/j.fuproc.2019.106199
  61. Sermyagina, E., Mendoza Martinez, C. L., Nikku, M., & Vakkilainen, E. (2021). Spent coffee grounds and tea leaf residues: Characterization, evaluation of thermal reactivity and recovery of high-value compounds. Biomass and Bioenergy, 150, 106141. https://doi.org/10.1016/j.biombioe.2021.106141
  62. Seth, D., Athparia, M., Singh, A., Rathore, D., Venkatramanan, V., Channashettar, V., Prasad, S., Maddirala, S., Sevda, S., & Kataki, R. (2025). Sustainable environmental practices of tea waste—A comprehensive review. Environmental Science and Pollution Research, 32(12), 7449–7467. https://doi.org/10.1007/s11356-023-30848-3
  63. Shah, M. A., Hayder, G., Kumar, R., Kumar, V., Ahamad, T., Kalam, M. A., Soudagar, M. E. M., Mohamed Shamshuddin, S. Z., & Mubarak, N. M. (2023). Development of sustainable biomass residues for biofuels applications. Scientific Reports, 13(1), 14248. https://doi.org/10.1038/s41598-023-41446-1
  64. Sher, F., Iqbal, S. Z., Liu, H., Imran, M., & Snape, C. E. (2020). Thermal and kinetic analysis of diverse biomass fuels under different reaction environment: A way forward to renewable energy sources. Energy Conversion and Management, 203, 112266. https://doi.org/10.1016/j.enconman.2019.112266
  65. Tian, H., Wei, Y., Cheng, S., Huang, Z., Qing, M., Chen, Y., Yang, H., & Yang, Y. (2022). Optimizing the gasification reactivity of biochar: The composition, structure and kinetics of biochar derived from biomass lignocellulosic components and their interactions during gasification process. Fuel, 324, 124709. https://doi.org/10.1016/j.fuel.2022.124709
  66. Tunklová, B., Jeníček, L., Malaťák, J., Neškudla, M., Velebil, J., & Hnilička, F. (2022). Properties of Biochar Derived from Tea Waste as an Alternative Fuel and Its Effect on Phytotoxicity of Seed Germination for Soil Applications. Materials, 15(24), 8709. https://doi.org/10.3390/ma15248709
  67. Unyay, H., Altay, H. O., Perendeci, N. A., Szufa, S., Ozdemir, F., & Angelidaki, İ. (2025). Valorisation potential of black tea processing wastes for bioactive compounds recovery and renewable energy production. Journal of Environmental Chemical Engineering, 13(3), 117124. https://doi.org/10.1016/j.jece.2025.117124
  68. Volli, V., Gollakota, A. R. K., & Shu, C.-M. (2021). Comparative studies on thermochemical behavior and kinetics of lignocellulosic biomass residues using TG-FTIR and Py-GC/MS. Science of The Total Environment, 792, 148392. https://doi.org/10.1016/j.scitotenv.2021.148392
  69. Wang, S., Zou, C., Lou, C., Yang, H., Mei, M., Jing, H., & Cheng, S. (2020). Effects of hemicellulose, cellulose and lignin on the ignition behaviors of biomass in a drop tube furnace. Bioresource Technology, 310, 123456. https://doi.org/10.1016/j.biortech.2020.123456
  70. Wang, Y., & Wu, J. J. (2023). Thermochemical conversion of biomass: Potential future prospects. Renewable and Sustainable Energy Reviews, 187, 113754. https://doi.org/10.1016/j.rser.2023.113754
  71. Wang, Z., Ahmad, W., Zhu, A., Zhao, S., Ouyang, Q., & Chen, Q. (2024). Recent advances review in tea waste: High-value applications, processing technology, and value-added products. Science of The Total Environment, 946, 174225. https://doi.org/10.1016/j.scitotenv.2024.174225
  72. Yan, Y., Meng, Y., Tang, L., Kostas, E. T., Lester, E., Wu, T., & Pang, C. H. (2019). Ignition and Kinetic Studies: The Influence of Lignin on Biomass Combustion. Energy & Fuels, 33(7), 6463–6472. https://doi.org/10.1021/acs.energyfuels.9b01089
  73. Yanik, J., Duman, G., Karlström, O., & Brink, A. (2018). NO and SO2 emissions from combustion of raw and torrefied biomasses and their blends with lignite. Journal of Environmental Management, 227, 155–161. https://doi.org/10.1016/j.jenvman.2018.08.068
  74. Yogalakshmi K, Poornima Devi T, Sivashanmugam P, Kavitha S, Yukesh Kannah R, Varjani, S., AdishKumar, S., Kumar, G., & J, R. B. (2022). Lignocellulosic biomass-based pyrolysis: A comprehensive review. Chemosphere, 286, 131824. https://doi.org/10.1016/j.chemosphere.2021.131824
  75. Zhang, S., Mei, Y., & Lin, G. (2024). Pyrolysis interaction of cellulose, hemicellulose and lignin studied by TG-DSC-MS. Journal of the Energy Institute, 112, 101479. https://doi.org/10.1016/j.joei.2023.101479
  76. Zhao, T., Li, C., Wang, S., & Song, X. (2022). Green Tea (Camellia sinensis): A Review of Its Phytochemistry, Pharmacology, and Toxicology. Molecules, 27(12), 3909. https://doi.org/10.3390/molecules27123909
  77. Zhou, B., Liu, X., Resende, F. L. P., Zhou, J., Wang, M., & Dichiara, A. B. (2021). Hydropyrolysis of Residual Camellia sinensis and Its Cellulose and Lignin Fractions over Nickel Nanoparticles Confined Inside Carbon Nanotube Microreactors at Atmospheric Pressure. ACS Sustainable Chemistry & Engineering, 9(32), 10827–10836. https://doi.org/10.1021/acssuschemeng.1c02974

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