Biochar production and its utilization in sustainable energy applications

Abstract

The ever-increasing global demand for energy and consumption of fossil fuels is causing serious problems in terms of energy security and climate change. Growing global concerns about these issues have accelerated the search for renewable and affordable alternative resources that enable sustainable development. In this context, biomass, which consists of renewable organic materials, stands out as a potential source for sustainable energy production. Biochar (BCH) is a porous, high-carbon material produced by the thermochemical conversion (pyrolysis) of biomass at temperatures between 300 and 900 °C in an oxygen-free or oxygen-limited environment. The efficiency of BCH production, which is carried out using various production technologies, generally depends on the type of biomass feedstock used, its moisture content, and operating conditions. BCH possesses unique chemical (high pH, carbon retention, cation exchange capacity, surface functionality) and physical (high porosity, water retention capacity, surface area and surface charge) properties. Consequently, it is used in mitigating climate change (reducing CO₂ and CH₄ emissions), promoting environmental sustainability, enhancing agricultural productivity, and facilitating carbon sequestration in soil. It also plays a significant role in improving soil quality to increase plant and overall crop yields. Additionally, it stands out as an effective catalyst support material in energy storage systems, particularly in thermochemical, photocatalytic, electrocatalytic processes, and hydrogen production via natural gas steam reforming. As a result, BCH contributes to environmental sustainability and offers a cost-effective solution for energy technologies thanks to its carbon-negative properties and versatile use.

Keywords

• Biomass
• Biochar
• Pyrolysis
• Energy
• Sustainability

References

1. [1] Yameen MZ, Naqvi SR, Juchelková D, Khan MNA. Harnessing the power of functionalized biochar: progress, challenges, and future perspectives in energy, water treatment, and environmental sustainability. Biochar 2024; 6: 25.
2. [2] Saletnik A, Saletnik B. Technology–economy–policy: biochar in the low-carbon energy transition-A Review. Applied Sciences 2025; 15 (11): 5882.
3. [3] Panwar NL, Pawar A, Salvi BL. Comprehensive review on production and utilization of biochar. SN Applied Sciences 2019; 1: 168.
4. [4] Shan R, Han J, Gu J, Yuan H, Luo B, Chen Y. A review of recent developments in catalytic applications of biochar-based materials. Resources, Conservation and Recycling 2020; 162: 105036.
5. [5] Ramos R, Abdelkader-Fernández VK, Matos R, Peixoto AF, Fernandes DM. Metal-supported biochar catalysts for sustainable biorefinery, electrocatalysis, and energy storage applications: A Review. Catalysts 2022; 12 (2): 207.
6. [6] Guo S, Li Y, Wang Y, Wang L, Sun Y, Liu L. Recent advances in biochar-based adsorbents for CO2 capture. Carbon Capture Science & Technology 2022; 4: 100059.
7. [7] Tisserant A, Cherubini F. Potentials, limitations, co-benefits, and trade-offs of biochar applications to soils for climate change mitigation. Land 2019; 8 (12): 179.
8. [8] Zulfiqar F, Moosa A, Nazir MM, Ferrante A, Ashraf M, Nafees M, Chen J, Darras A, Siddique KHM. Biochar: An emerging recipe for designing sustainable horticulture under climate change scenarios. Frontiers in Plant Science 2022; 13: 1018646.

9. [9] Amalina F, Razak ASA, Krishnan S, Sulaiman H, Zularisam AW, Nasrullah M. Biochar production techniques utilizing biomass waste-derived materials and environmental applications – A review. Journal of Hazardous Materials Advances 2022; 7: 100134.
10. [10] Saraugi SS, Asare F, Gazo R, Routray W. Advances in sustainable production of biochar and biochar-based nanocomposites: A critical review. Journal of Cleaner Production 2025; 514: 145752.
11. [11] Safarian S. Performance analysis of sustainable technologies for biochar production: A comprehensive review. Energy Reports 2023; 9: 4574-4593.
12. [12] Siddiqui S. Unlocking the environmental potential of biochar: production, applications, and limitations. Frontiers in Sustainable Food Systems 2025; 9: 1569941.
13. [13] Kumar Mishra R, Jaya Prasanna Kumar D, Narula A, Minnat Chistie S, Ullhas Naik S. Production and beneficial impact of biochar for environmental application: A review on types of feedstocks, chemical compositions, operating parameters, techno-economic study, and life cycle assessment. Fuel 2023; 343: 127968.
14. [14] Manikandan S, Vickram S, Subbaiya R, Karmegam N, Woong Chang S, Ravindran B, Awasthi MK. Comprehensive review on recent production trends and applications of biochar for greener environment. Bioresource Technology 2023; 388: 129725.
15. [15] Chen B, Zeng H, Yang F, Yang Y, Qiao Z, Zhao X, Wang L, Wu F. Functional biochar as sustainable precursors to boost the anaerobic digestion of waste activated sludge from a circular economy perspective: a review. Biochar 2024; 6: 60.
16. [16] Fakhar A, Canatoy RC, Galgo SJC, Rafique M, Sarfraz R. Advancements in modified biochar production techniques and soil application: a critical review. Fuel 2025; 400: 135745.
17. [17] Liu Y, Weng Z, Han B, Guo Z, Tian H, Tang Y, Cai Y, Yang Z. Recent studies on the comprehensive application of biochar in multiple environmental fields. Journal of Cleaner Production 2023; 421: 138495.
18. [18] Sajjadi B, Chen WY, Egiebor NO. A comprehensive review on physical activation of biochar for energy and environmental applications. Reviews in Chemical Engineering 2019; 35 (6):735-76.
19. [19] Luo P, Zhang W, Xiao D, Hu J, Li N, Yang J. Biochar-Based Fertilizers: Advancements, applications, and future directions in sustainable agriculture–A Review. Agronomy 2025; 15 (5): 1104.
20. [20] Sumalinog DAG, Capareda SC, De Luna MDG. Evaluation of the effectiveness and mechanisms of acetaminophen and methylene blue dye adsorption on activated biochar derived from municipal solid wastes. Journal of Environmental Management 2018; 210: 255-262.
21. [21] Visser ED, Seroka NS, Khotseng L. Catalytic properties of biochar as support material potential for direct methanol fuel cell: A Review. ACS Omega 2023; 8 (44): 40972-81.
22. [22] Zhang S, Li Y, Du Y, Ma X, Lin J, Chen S. Apple-pomace-based porous biochar as electrode materials for supercapacitors. Diamond and Related Materials 2022; 130: 109507.
23. [23] Liu Y, Su M, Li D, Li S, Li X, Zhao J, Liu F. Soybean straw biomass-derived Fe–N co-doped porous carbon as an efficient electrocatalyst for oxygen reduction in both alkaline and acidic media. RSC Advances 2020; 10 (12): 6763-6771.
24. [24] Barbosa Nogueira MJ, Chauque S, Sperati V, Savio L, Divitini G, Pasquale L, Marras S, Franchi P, Paciornik S, Zaccaria RP, Pandoli OG. Untreated bamboo biochar as anode material for sustainable lithium ion batteries. Biomass and Bioenergy 2025; 193: 107511.
25. [25] Ben Salem I, El Gamal M, Sharma M, Hameedi S, Howari FM. Utilization of the UAE date palm leaf biochar in carbon dioxide capture and sequestration processes. Journal of Environmental Management 2021; 299: 113644.
26. [26] Fang L, Huang T, Lu H, Wu XL, Chen Z, Yang H, Wang S, Tang Z, Li Z, Hu B, Wang X. Biochar-based materials in environmental pollutant elimination, H2 production and CO2 capture applications. Biochar 2023; 5: 42.
27. [27] Varkolu M, Gundekari S, Omvesh, Palla VCS, Kumar P, Bhattacharjee S, Vinodkumar T. Recent advances in biochar production, characterization, and environmental applications. Catalysts 2025; 15 (3): 243.
28. [28] Zhao J, Jiang Y, Chen X, Wang C, Nan H. Unlocking the potential of element-doped biochar: from tailored synthesis to multifunctional applications in environment and energy. Biochar 2025; 7 (1):77.
29. [29] Akay S. Removal of 5-fluorouracil from aqueous solution using biochar in ultrasonic medium: response surface modeling and optimization. Süleyman Demirel University Faculty of Arts and Science Journal of Science 2020; 15 (2):264–286.
30. [30] Kaya N, Yıldız Z, Ceylan S. Preparation and characterisation of biochar from hazelnut shell and its adsorption properties for methylene blue dye. Journal of Polytechnic 2018; 21 (4): 765-776.
31. [31] İmamoğlu M, Uzun S. Removal of Cu(II) ions from aqueous solutions using sunflower stalk biochar prepared with sulfuric acid. Turkish Journal of Analytical Chemistry. 2025; 7 (3):292-299.
32. [32] Jatav HS, Rajput VD, Minkina T, Singh SK, Chejara S, Gorovtsov A, Barakhov A, Bauer T, Sushkova S, Mandzhieva S, Burachevskaya M. Sustainable approach and safe use of biochar and its possible consequences. Sustainability 2021; 13 (18): 10362.
33. [33] Da Y, Xu M, Ma J, Gao P, Zhang X, Yang G, Wu J, Song C, Long L, Chen C. Remediation of cadmium contaminated soil using K2FeO4 modified vinasse biochar. Ecotoxicology and Environmental Safety 2023; 262: 115171.
34. [34] Sayğan E Pinar, Aydemir S, Bilgili A. Effects of biochar applications on plant development parameters in durum wheat (Triticum durum Desf.) under salinity stress. Harran Journal of Agricultural and Food Science 2025; 29 (3):438-447.
35. [35] Kutlay A, Demirbaş A. Effect of biochar application produced at different temperatures on corn plant yield, nutrient uptake and carbon mineralization. 2024; 13 (2):376-390.
36. [36] Igalavithana AD, Choi SW, Shang J, Hanif A, Dissanayake PD, Tsang DCW, Kwon JH, Lee KB, Ok YS. Carbon dioxide capture in biochar produced from pine sawdust and paper mill sludge: Effect of porous structure and surface chemistry. Science of The Total Environment 2020; 739: 139845.
37. [37] Hu J, Mao D, Duan P, Li K, Lin Y, Wang X, Piao Y. Green synthesis of ZnO/BC nanohybrid for fast and sensitive detection of bisphenol a in water. Chemosensors 2022; 10 (5): 163.
38. [38] Zou J, Liu J, Yu Q, Gao Y, Chen S, Huang X, Hu D, Liu S, Lu L. Facile synthesis of nitrogen self-doped porous carbon derived from cicada shell via KOH activation for simultaneous detection and removal of Cu2+. Molecules 2022; 27 (14):4516.
39. [39] Xiang Y, Liu H, Yang J, Shi Z, Tan Y, Jin J, Wang R, Zhang S, Wang J. Biochar decorated with gold nanoparticles for electrochemical sensing application. Electrochimica Acta 2018; 261: 464-473.
40. [40] Rahman MZ, Edvinsson T, Kwong P. Biochar for electrochemical applications. Current Opinion in Green and Sustainable Chemistry 2020; 23: 25-30.
41. [41] Tiwari SK, Bystrzejewski M, De Adhikari A, Huczko A, Wang N. Methods for the conversion of biomass waste into value-added carbon nanomaterials: Recent progress and applications. Progress in Energy and Combustion Science 2022; 92: 101023.
42. [42] Hu S, Tan Y, Feng C, Wang S, Sun Z, Wu H, Zhang G. Improving biomass-derived carbon with cobalt/cobalt oxide doping for oxygen reduction reaction. Journal of Solid State Electrochemistry 2019; 23 (8): 2291–2299.
43. [43] Sam DK, Li H, Xu YT, Cao Y. Advances in porous carbon materials for a sustainable future: A review. Advances in Colloid and Interface Science 2024; 333: 103279.
44. [44] Zhou Y, Leng Y, Zhou W, Huang J, Zhao M, Zhan J, Feng C, Tang Z, Chen S, Liu H. Sulfur and nitrogen self-doped carbon nanosheets derived from peanut root nodules as high-efficiency non-metal electrocatalyst for hydrogen evolution reaction. Nano Energy 2015; 16: 357-366.
45. [45] Erkol H. Electrocatalytic hydrogen gas production on biochar modified with gold nanoparticles. Master’s Thesis, Aksaray University, 2023.
46. [46] Khan TMA, Sarawade PB. Efficient hydrogen evolution of a low-cost novel green chickpea shell-derived carbon-metal composite in alkaline electrolytes. Journal of Porous Materials 2025; 32 (5):1791-800.
47. [47] Ertaş C, Balun Kayan D. Electrocatalytic activity of biochar-supported ZnCoNi nanocomposite for hydrogen production from water splitting. International Journal of Energy Studies 2025; 10 (3):1073-1089.
48. [48] Akgül G, Turan Z. Application of biochar derived from industrial tea waste into the fuel cell-a novel approach. Pamukkale University Journal of Engineering Sciences 2020; 26 (1):122-126.
49. [49] Li Z, Zhang L, Amirkhiz BS, Tan X, Xu Z, Wang H, Olsen BC, Holt CMB, Mitlin D. Carbonized chicken eggshell membranes with 3D architectures as high‐performance electrode materials for supercapacitors. Advanced Energy Materials 2012; 2 (4): 431-437.
50. [50] Kalinke C, de Oliveira PR, Bonacin JA, Janegitz BC, Mangrich AS, Marcolino-Junior LH, Bergamini MF. State-of-the-art and perspectives in the use of biochar for electrochemical and electroanalytical applications. Green Chemistry 2021; 23: 5272-5301.
51. [51] Liu WJ, Jiang H, Yu HQ. Emerging applications of biochar-based materials for energy storage and conversion. Energy & Environmental Science 2019; 12: 1751-1779.
52. [52] Deng Q, Liu H, Zhou Y, Luo Z, Wang Y, Zhao Z, Yang R. N-doped three-dimensional porous carbon materials derived from bagasse biomass as an anode material for K-ion batteries. Journal of Electroanalytical Chemistry 2021; 899: 115668.
53. [53] Simões Dos Reis G, Mayandi Subramaniyam C, Cárdenas AD, Larsson SH, Thyrel M, Lassi U, et al. Facile synthesis of sustainable activated biochars with different pore structures as efficient additive-carbon-free anodes for lithium- and sodium-ıon batteries. ACS Omega 2022; 7 (46):42570-42581.
54. [54] Tan YC, Jia S, Tan J, Leow Y, Zheng R, Tan XY, Dolmanan SB, Zhang M, Yew PYM, Ni XP, Zhu Q, Xu J, Loh XJ, Ramakrishna S, Kai D. Coconut husk-derived biochar for enhancing electrochemical conversion of CO2. Materials Today Chemistry 2023; 30: 101595.
55. [55] Fu S, Li M, De Jong W, Kortlever R. Tuning the properties of N-doped biochar for selective CO2 electroreduction to CO. ACS Catalysis 2023; 13 (15):10309-10323.
56. [56] Chen C, Zhang J, Qi Y, Zhang J, Guo T, Wang H. Locust leaves-derived biochar coupled CuxO composites for efficient electrocatalytic CO2 reduction. Fuel 2024; 372: 132245.