Adsorbent comprising bisphenol, formaldehyde and hexadiamine terpolymer with adsorbed Pb
AssigneeKing Fahd University of Petroleum and Minerals
InventorsOthman Charles Sadeq AL HAMOUZ, Tawfik Abdo SALEH AWADH
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Abstract
A cross-linked terpolymer (BSDF) obtained by polycondensation of bisphenol-S, formaldehyde and 1,6-diammohexane. The terpolymer is highly efficient in eliminating lead ions from aqueous solutions. The adsorption of lead ions on BSDF was studied under different conditions such as: pH, contact time and temperature. The adsorption kinetics fits Lagergren second order kinetic model that are in agreement with the low surface area as a chemisorption process. Applying BSDF on non-spiked and spiked real wastewater samples under optimum conditions revealed the high efficiency of BSDF in removing toxic metal ions.
Claims6
A heavy metal adsorbent, comprising:
- a cross-linked terpolymer haying a formula (I) and Pb2+ ions adsorbed onto the cross-linked terpolymer:
- wherein:
- n is the number of repeating units and n is an integer from greater than 1 to 1,000,
- wherein the cross-linked terpolymer has a weight average molecular weight of 1,500-350,000 g/mol.
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Dependencies are inferred from the claim text.