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- W3202396710 abstract "Adsorption of Pb(II) on the adsorbent of orange (Citrus nobilis var. Microcarpa) waste modified by saponification has been studied. Saponification was done by using Ca(OH)2 solution to form saponified orange waste of Ca (SOW-Ca) and by using NaOH solution to form saponified orange waste of Na (SOW-Na). Saponification was carried out at pH 10, 10.5, 11, 11.5, 12 and 12.5. The SOW-Ca dan SOW-Na were characterized by using Fourier Transform Infrared Spectroscopy (FTIR) and were determined their ion exchange capacities through netralization titration using HCl solution. The results showed that the highest ion exchange capacity of SOW-Ca was achieved at pH 11.5, i.e. 2,39 mol/kg, while that SOW-Na was at pH 11.5, i.e. 1,53 mol/kg. Adsorption of Pb(II) on both SOW-Ca and SOW-Na was optimum at medium pH 5 and it followed pseudo second order with adsorption rate constants were 4,88 x 10-2 and 2,71 x 10-2 mM-1 min-1, respectively. Adsorption of Pb(II) on both adsorbent fitted well to Langmuir isotherm with capacity 195,84 mg/g for SOW-Ca and 164,58 mg/g for SOW-Na. By using biner solution Pb(II)- Zn(II), the abilities of SOW-Ca and SOW-Na in adsorbing Pb(II) increased significantly, while in biner solution Pb(II)-Cd(II) the abilities of both adsorbents in adsorbing Pb(II) were affected insignificantly." @default.
- W3202396710 created "2021-10-11" @default.
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- W3202396710 date "2012-01-01" @default.
- W3202396710 modified "2023-09-23" @default.
- W3202396710 title "KAJIAN ADSORPSI Pb(II) DENGAN ADSORBEN LIMBAHJERUK TERSAPONIFIKASI Ca(OH)2 DAN NaOH;ADSORPTION STUDY OF Pb(II) ON SAPONIFIED ORANGEWASTE WITH Ca(OH)2 AND NaOH" @default.
- W3202396710 hasPublicationYear "2012" @default.
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