1 Petre Melikishvili Institute of Physical and Organic Chemistry at Ivane Javakhishvili Tbilisi State University, 31 Politkovskaya St., 0186, Tbilisi, Georgia.
2 R. Agladze Institute of Inorganic Chemistry and Electrochemistry at Ivane Javakhishvili Tbilisi State University, 11 Elizbar Mindeli St., 0186, Tbilisi, Georgia.
World Journal of Advanced Research and Reviews, 2026, 31(01), 1547–1552
Article DOI: 10.30574/wjarr.2026.31.1.1984
Received on 20 June 2026; revised on 25 July 2026; accepted on 28 July 2026
This study investigates the removal of Zn(II) and Cd(II) ions from aqueous solutions using local Georgian limestone as a natural adsorbent. Limestone is a cost-effective, readily available, mechanically durable, and environmentally friendly mineral. For the first time, the adsorption capacity of this specific mineral was systematically evaluated. The effects of key operational parameters, including adsorbent dosage, contact time, initial metal ion concentration, and solution pH, on the adsorption efficiency of zinc and cadmium were thoroughly examined. Optimal process parameters were identified, yielding adsorption efficiencies of 82% for zinc and 69% for cadmium. The corresponding maximum adsorption capacities were determined to be 28 mg/g for zinc and 2.30 mg/g for cadmium.
Limestone; Heavy Metals; Adsorption; Zinc; Cadmium; Degree of Adsorption
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Dali Ioseliani, Neli Kalabegashvili, Gulnara Balarjishvili, Nino Nonikashvili, Liana Samkharadze and Dali Dzanashvili. Removal of zinc and cadmium from an aqueous solution using limestone. World Journal of Advanced Research and Reviews, 2026, 31(01), 1547–1552. Article DOI: https://doi.org/10.30574/wjarr.2026.31.1.1984