Water contamination by heavy metal ions and other metallic species is a global environmental problem that requires efficacious solutions. This literature review article examines the use of activated carbon compounds and hydroxyapatite for the removal of metal ions in polluted waters. Key aspects such as the synthesis methods of these compounds, their adsorption capacity, and the mechanisms of metal ion removal are thoroughly analyzed. Additionally, the advantages and limitations of these compounds are discussed, along with their potential for large-scale application in water purification. It is concluded that activated carbon compounds and hydroxyapatite show promise for the elimination of metal ions, and future research areas are suggested to optimize their efficiency and applicability. This article provides an updated overview of the topic and is relevant for researchers and professionals involved in water management and environmental protection.
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