CICIK SRI WULANDARI, 080942015 (2011) PENGOLAHAN LIMBAH LOGAM BERAT (Cu, Hg, Ni) SECARA ADSORPSI FLUIDISASI DENGAN TURUNAN KITOSAN-UREA. Thesis thesis, UNIVERSITAS AIRLANGGA.

Preview	Text (ABSTRAK) gdlhub-gdl-s2-2011-wulandaric-21078-tk0811-k.pdf Download (391kB) | Preview
	Text (FULL TEXT) gdlhub-gdl-s2-2011-wulandaric-17657-tk0811.pdf Restricted to Registered users only Download (1MB) | Request a copy

Abstract

This study aims to synthesize chitosan-urea which is used as an adsorbent to adsorb the waste solution containing heavy metals Cu, Ni, Hg using fluidization adsorption process. Chitosan-urea which has been crosslinked with formaldehyde and urea, menstabilitas adsorbent and adsorption capacity. Fluidization in the adsorption process waste containing metals Cu, Ni, Hg by using a variation of 30, 60, 90 minutes, a adsorbent chitosan-urea 250, 500, 1000, 1500 mg and the concentration of a solution of 500 mg / l. From the optimization results have been obtained in the study with a 30 minute contact time, adsorbent dose of 500 mg and the concentration of metal solution of Cu, Ni, Hg of 500 mg / l, then used to determine the order of the reaction, enthalpy, entropy and free energy by using variations in temperature 40, 50, 60, 70 oC. Then the results of the experiment the concentration levels of waste metals Cu, Ni, Hg was analyzed by AAS (Atomic Adsorption Spectroption) and chitosan-urea adsorbent which has absorbed metals was analyzed by FTIR showing differences that occurred in the absorption for C = O carbonyl bond. The results showed that chitosan-urea adsorbent dose of 500 mg, 30-minute contact time and metal concentration of Cu, Ni, Hg of 500 mg / l at a temperature of 50oC with fluidization adsorption process, have been able to produce the adsorption capacity of 9.896 mg/g, 9.996 mg/ g, 10.970 mg / g. Results of analysis the kinetics of adsorption data obtained half-order equation, results of analysis kinetics of adsorption data obtained half-order equation, the adsorption isotherm Freundilch enthalpy values (H) Cu = -0.4755 k. J K-1 mol-1, (H) Ni = -0.4309 kJ mol-1 K-1, (H) Hg = -0.4099 kJ mol-1 K-1 eksotherm reaction, whereas the free energy (G) Cu = 18 957 J mol-1,(G) Ni = 18 710 J mol-1, (G) Hg = 18 699 K-1 mol-1 and the value of entropy (S) Cu = - 59.05 J.Kmol-1, Ni = -58.50 J.Kmol-1, Hg = -58.43 J.K.mol-1

Actions (login required)

View Item