Application of manganese oxide-based materials for arsenic removal: A review

• Published in: The Science of the total environment 2024-03, Vol.918, p.170269-170269, Article 170269
• Main Authors: Younas, Muhammad, Bacha, Aziz Ur Rahim, Khan, Kaleem, Nabi, Iqra, Ullah, Zahid, Humayun, Muhammad, Hou, Jingtao
• Format: Article
• Language: English
• Subjects: Adsorbent; Arsenic; Manganese oxide; Mechanism; Removal
• ISSN: 0048-9697; 1879-1026
• DOI: 10.1016/j.scitotenv.2024.170269

In the context of growing arsenic (As) contamination in the world, there is an urgent need for an effective treatment approach to remove As from the environment. Industrial wastewater is one of the primary sources of As contamination, which poses significant risks to both microorganisms and human health, as the presence of As can disrupt the vital processes and synthesis of crucial macromolecules in living organisms. The global apprehension regarding As presence in aquatic environments persists as a key environmental issue. This review summarizes the recent advances and progress in the design, strategy, and synthesis method of various manganese-based adsorbent materials for As removal. Occurrence, removal, oxidation mechanism of As(III), As adsorption on manganese oxide (MnOx)-based materials, and influence of co-existing solutes are also discussed. Furthermore, the existing knowledge gaps of MnOx-based adsorbent materials and future research directions are proposed. This review provides a reference for the application of MnOx-based adsorbent materials to As removal. [Display omitted] •Effective adsorption performance for arsenic removal via manganese-based materials is explored.•Several manganese oxide-based materials are discussed in detail.•Physio-chemical properties and adsorption mechanism of arsenic have been reviewed.•The role of oxidation and adsorption capacity of manganese oxides have been highlighted.