Abstract Fingerprints are unique, permanent patterns on the human fingers, crucial in criminal investigations for linking individuals to crime scenes. Addressing the growing need for sustainable solutions in forensic science, this study examines the upcycling of Prosopis Juliflora, an invasive species, to develop fingerprint powder. The process involves converting Prosopis Juliflora biomass into activated charcoal through pyrolysis and chemical activation, which is then processed into a fine powder suitable for latent fingerprint detection. This method offers an eco-friendly and cost-effective alternative to traditional fingerprint powders. The upcycled powder, prepared in both standard and magnetic forms, was characterized using Scanning Electron Microscopy (SEM) to analyze surface morphology and particle distribution, which influence fingerprint adhesion. The powder was tested on various porous and non-porous surfaces like glass, plastic, wood, metal, and paper, to assess its effectiveness in latent fingerprint development. The results demonstrated clear and effective latent print development and successful print lifting from various surfaces, including uneven ones. This study underscores the potential of integrating sustainable development into forensic science, providing a solution to both environmental and forensic challenges.
Aswini et al. (Tue,) studied this question.