ISOTERM KESETIMBANGAN ADSORPSI TIMBAL PADA ABU SEKAM PADI

Bregas S T Sembodo

Abstract

One of methods to overcome lead pollution in water is adsorption process. Rice hull, an abundance agriculture side product in Indonesia, would turn to ash and use as an alternative adsorbent for lead adsorption. The objectives of this research were to explore how much lead could be adsorbed on rice hull ash and to determine a suitable adsorption isotherm model for this process. The batch sorption experiments were carried out in the 1 liters stirred glass vessel containing 5 ppm Pb(NO3)2 solution. The weights of adsorbent (rice hull ash) introduced into the vessel were 1 g, 5 g, 8 g and 15 g. The temperatures of solution were 35oC, 45oC and 55oC. After reaching equilibrium the solution was analyzed for the remaining Pb2+ by AAS. The results showed that the increase in temperature was followed by the increase in amount of Pb2+ adsorbed. The maximum sorption was at 55oC where 74.5% of initial Pb2+ was adsorbed or it was 0.12412 mg/g adsorbent. It was also found that the Freundlich isotherm model was superior to the others.

Full Text:

PDF

References

Al-Duri, B., 1995, “A Review in Equiliberium in Single and Multicomponent Liquid Adsorption System” , Review in Chemical Engineering, 11, p.p.101-143

Arifin, B., 2000, “Kinetika Adsorpsi Larutan Merkuri Menggunakan Partikel Kayu” , Prosiding Seminar Teknik Kimia Soehadi Reksowardojo, ITB, Bandung

Chang, Y.Y., Lin, C.I., and Chen, H.K., 2001, “Effect of Acid Activation on Sesame Oil Bleaching by Rice Hull Ash”, J. Chem. Eng. Japan, 34, pp. 1-6

Do, D.D., 1998, “Adsorption Analysis: Equillibra and Kinetics “, vol 1, Imperial Collegs Press, London

Kirk, R.E. & Othmer, D.F., 1994, “Encyclopedia of Chemical Technology”, 4th ed., vol 15, a Wiley Interscience Publisher Inc., New York

Prasad, M., Saxena, S., Amritphale, and Navin, C., 2000, “ Kinetics and Isotherm for Aqueous Lead Adsorption by Natural Minerals “, Ind. Eng. Chem. Res., 39, p.p. 3034- 3037

Proctor, A., Clark, P.K., and Parker, C.A., 1995, “Rice Hull Ash Adsorbent Performance under Commercial Soy Oil Bleaching Conditions”, J. Am. Oil. Chem. Soc., 72, pp. 459-462

Treybal, R.E., 1981, “Mass Transfer Operations”, International Student Edition, p.p. 565-567, 641, McGraw-Hill Book Company, Inc., Singapura

DOI: https://doi.org/10.20961/ekuilibrium.v4i2.49625

Refbacks

  • There are currently no refbacks.