Technologies for arsenic removal from contaminated water: a systematic review of the literature (2022–2025)

Abstract

Arsenic is a priority contaminant in various water sources and poses a significant risk to public health. This study presents a systematic review of the literature on technologies for removing arsenic from contaminated water, considering publications from the period 2022–2025. The PRISMA methodology was applied and a search was conducted in the Scopus database, finally selecting 29 articles according to inclusion and exclusion criteria. The findings show that the most widely used technologies are adsorption and electrocoagulation, in addition to advanced oxidation processes and emerging approaches based on nanomaterials and combined technologies. Likewise, knowledge gaps are shown in relation to the regeneration and reuse of adsorbents, the management of generated waste, scaling up in real conditions, and the economic evaluation of the viability of the reported alternatives.