Effective removal of boron from aqueous solutions by inorganic adsorbents: A review

Abstract

Increasing levels of boron in water exceeding acceptable thresholds have triggered concernsregarding environmental pollution and adverse health effects. In response, significant efforts arebeing made to develop new adsorbents for the removal of boron from contaminated water. Amongthe various materials proposed, inorganic adsorbents have emerged as promising materials due totheir chemical, thermal, and mechanical stability. This review aims to comprehensively examinerecent advances made in the development of inorganic adsorbents for the efficient removal of boron from water. Firstly, the adsorption performance of the most used adsorbents, such as magnesium, iron, aluminum, and individual and mixed oxides, are summarized. Subsequently, diverse functionalization methods aimed at enhancing boron adsorption capacity and selectivity are carefully analyzed. Lastly, challenges and future perspectives in this field are highlighted to guide the development of innovative high-performance adsorbents and adsorption systems, ultimately leading to a reduction in boron pollution.