Artificial Coalification of Orange Peel for Extraction of Value Added Chemicals

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  • Department of Civil Engineering, MSRUAS, Bengaluru , Karnataka.
  • Department of Civil Engineering, MSRUAS, Bengaluru , Karnataka.
  • Department of Civil Engineering, MSRUAS, Bengaluru , Karnataka.
  • Department of Mechanical and Manufacturing Engineering, MSRUAS, Bengaluru, Karnataka.
  • Department of Mechanical and Manufacturing Engineering, MSRUAS, Bengaluru, Karnataka.



Waste to value added products is the aim of circular economy. Typical waste to value processes such as composting, briquetting, digestion are time consuming and gasification, and pyrolysis only produces energy. In the present research, a thermochemical process called as hydrothermal carbonization process is used to convert the organic wet waste to useful products. The HTC process converts the organic wet waste into coal like high carbon content material called hydrochar and the liquid component called as biocrude. The biocrude is a mixture of chemicals such as 5-HMF, Levulinic acid, Furfural and other chemicals used in pharmaceutical and cosmetic industry. Orange peel waste is processed in a HTC reactor in temperatures ranging between 180 to 220 o C, with the autogenous pressure. The calorific value of hydrochar produced is measured using bomb calorimeter, and is found to have enhancement over the feedstock. The biocrude is analysed using UV spectrometer and gas chromatography and mass spectroscopy to identify the components present. Compounds including anti-fungal, and anti-bacterial molecules are identified and reported.



Arruda, Maria Cecília De, Angelo Pedro Jacomino, Ana Luíza Pinheiro, Rafael Vasconcelos Ribeiro, Michelle Antonio Lochoski, and Raquel Capistrano Moreira. 2008. “Hydrothermal Treatment Favors Peeling of ‘pera’ Sweet Orange Fruit and Does Not Alter Quality.” Scientia Agricola 65 (2): 151–56. 10.1590/S0103-90162008000200007. DOI:

Batista, Gustavo, Renata B.A. Souza, Bruna Pratto, Martha S.R. dos Santos-Rocha, and Antonio J.G. Cruz. 2019. “Effect of Severity Factor on the Hydrothermal Pretreatment of Sugarcane Straw.” Bioresource Technology275 (November 2018): 321–27. https:// DOI:

Calabro, Paolo S., and Maria F. Panzera. 2017. “Biomethane Production Tests on Ensiled Orange Peel Waste.” International Journal of Heat and Technology35 (Special Issue 1): S130–36. https:// DOI:

Gheriany, Iman A. El, Fayza Ahmad El Saqa, Amer Abd El Razek Amer, and Mohamed Hussein. 2020. “Oil Spill Sorption Capacity of Raw and Thermally Modified Orange Peel Waste.” Alexandria Engineering Journal 59 (2): 925–32. DOI:

Hollas, J. Michael. Modern spectroscopy. John Wiley & Sons, 2004.

Hu, Yang, Othman Hamed, Rachid Salghi, Noureddine Abidi, Shehdeh Jodeh, and Reham Hattb. 2017. “Extraction and Characterization of Cellulose From Agricultural Waste Argan Press Cake.” Cellulose Chemistry and Technology Cellulose Chem. Technol 51 (4): 263–72.

Lachos-Perez, Daniel, Luz S. Buller, William G. Sganzerla, Lissara P. Ody, Giovani L. Zabot, and Tânia Forster-Carneiro. 2021. “Sequential Hydrothermal Process for Production of Flavanones and Sugars from Orange Peel: An Economic Assessment.” Biofuels, Bioproducts and Biorefining15 (1): 202–17. https:// DOI:

Lei, Qian, Shrikalaa Kannan, and Vijaya Raghavan. 2021. “Uncatalyzed and Acid-Aided Microwave Hydrothermal Carbonization of Orange Peel Waste.” Waste Management126: 106–18. 10.1016/j.wasman.2021.02.058. DOI:

Ma, Ru, Sandile Fakudze, and Jianqiang Chen. 2021. “Combustion Performance of Hydrochars Produced via Citricacid-Assisted Hydrothermal Carbonization of Pomelo Peel at Various Temperatures.” IOP Conference Series: Earth and Environmental Science 766 (1). https:/ / DOI:

Mantzouridou, Fani Th, Adamantini Paraskevopoulou, and Sofia Lalou. 2015. “Yeast Flavour Production by Solid State Fermentation of Orange Peel Waste.” Biochemical Engineering Journal101: 1–8. https:// DOI:

Medina-Salas, Lorena De, Mario Rafael Giraldi-Díaz, Eduardo Castillo-González, and Laura Elena Morales-Mendoza. 2020. “Valorization of Orange Peel Waste Using Precomposting and Vermicomposting Processes.” Sustainability(Switzerland) 12 (18): 6–8. DOI:

Miran, Waheed, Mohsin Nawaz, Jiseon Jang, and Dae Sung Lee. 2016. “Conversion of Orange Peel Waste Biomass to Bioelectricity Using a Mediator-Less Microbial Fuel Cell.” Science of the Total Environment 547: 197–205. 2016.01.004. DOI:

Moreno-Piraján, Juan Carlos, and Liliana Giraldo. 2012. “Heavy Metal Ions Adsorption from Wastewater Using Activated Carbon from Orange Peel.” E-Journal of Chemistry9 (2): 926–37. 383742. DOI:

Nicolae, Sabina A., Heather Au, Pierpaolo Modugno, Hui Luo, Anthony E. Szego, Mo Qiao, Liang Li, et al. 2020. “Recent Advances in Hydrothermal Carbonisation: From Tailored Carbon Materials and Biochemicals to Applications and Bioenergy.” Green Chemistry 22 (15): 4747–4800. DOI:

Nomura, Takashi, Eiji Minami, and Haruo Kawamoto. 2020. “Carbonization of Cellulose Cell Wall Evaluated with Ultraviolet Microscopy.” RSC Advances 10 (13): 7460–67. 16. Ravi, G., K. Kalaivanan, S. Durairaj, M.K. Ramesh, and G. Selladurai. 2019. “Efficiency of Earthworm, Eudrilus Eugeniae (Kinberg, 1867) in The Conversion If Orange Peel (Citrus Sinensis) Waste Mixed with Diclofenac Into Compost.” International Journal of Scientific Research in Biological Sciences6 (1): 89–96. https:// DOI:

Sachidhanandham, Aishwariya. 2020. “Textiles from Orange Peel Waste.” Science and Technology Development Journal23 (2): First. 10.32508/stdj.v23i2.1730. DOI:

Sun, Kanjun, Haiping Wang, Hui Peng, Yajuan Wu, Guofu Ma, and Ziqiang Lei. 2015. “Manganese Oxide Nanorods Supported on Orange Peel-Based Carbon Nanosheets for High Performance Supercapacitors.” International Journal of Electrochemical Science10 (3): 2000–2013. DOI:

Xiao, Kangxin, Huan Liu, Yang Li, Guangyan Yang, Yijie Wang, and Hong Yao. 2020. “Excellent Performance of Porous Carbon from Urea-Assisted Hydrochar of Orange Peel for Toluene and Iodine Adsorption.” Chemical Engineering Journal382 (September): 122997. j.cej.2019.122997. DOI:

Xiao, Kangxin, Huan Liu, Yang Li, Linlin Yi, Xiuju Zhang, Hongyun Hu, and Hong Yao. 2018. “Correlations between Hydrochar Properties and Chemical Constitution of Orange Peel Waste during Hydrothermal Carbonization.” Bioresource Technology265 (April): 432–36. 10.1016/j.biortech.2018.06.014. DOI:

Zayed, Menna, Heba Ghazal, Hanan A. Othman, and Ahmed G. Hassabo. 2022. “Synthesis of Different Nanometals Using Citrus Sinensis Peel (Orange Peel) Waste Extraction for Valuable Functionalization of Cotton Fabric.” Chemical Papers76 (2): 639–60. DOI:




How to Cite

Patil, M. S. M., A.P., P., S. V., S., M., S., N., A., & S. Iyengar, A. (2023). Artificial Coalification of Orange Peel for Extraction of Value Added Chemicals. Journal of Mines, Metals and Fuels, 70(10A), 256–260.