• Priyanka Wagh

Ensuring access to clean and safe water remains a critical sustainability challenge as global waste generation and water pollution continue to rise in parallel. Biochar, a carbon-rich material produced through the thermochemical conversion of biomass under oxygen-limited conditions, has emerged as a promising, low-cost, and environmentally sustainable material for water purification. This letter highlights the growing potential of biochar for removing a wide range of contaminants, including heavy metals, organic pollutants, and excess nutrients, while simultaneously supporting waste valorisation and circular economy objectives. Recent statistics indicate that approximately 4 billion tonnes of waste are generated globally each year, with 30–45 % comprising organic biomass suitable for conversion into biochar; however, less than 10 % of this resource is currently utilised through waste-to-biochar pathways. Typical biomass-to-biochar conversion yields range from ~22–60 %, depending on feedstock and process conditions, underscoring the scalability of this approach. Beyond pollutant removal, biochar production contributes to carbon sequestration and offers co-benefits for climate change mitigation. Despite these advantages, challenges related to material heterogeneity, long-term performance, and end-of-life management remain. Addressing these gaps through targeted research and policy support could accelerate the integration of biochar into sustainable and decentralized water treatment systems.

Biochar, sustainable, waste management, valorisation, water purification, circular bioeconomy

"Perspective: Role of Biochar in Sustainable Water Purification", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.13, Issue 1, page no.b396-b401, January-2026, Available :http://www.jetir.org/papers/JETIR2601157.pdf

"Perspective: Role of Biochar in Sustainable Water Purification", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.13, Issue 1, page no. ppb396-b401, January-2026, Available at : http://www.jetir.org/papers/JETIR2601157.pdf