ISOTERM KESETIMBANGAN ADSORPSI TIMBAL PADA ABU SEKAM PADI

Sembodo, Bregas S T (2005) ISOTERM KESETIMBANGAN ADSORPSI TIMBAL PADA ABU SEKAM PADI. EKUILIBRIUM, 4 (2). pp. 100-105.

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    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(NO 3 ) 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 35 o C, 45 o C and 55 o C. After reaching equilibrium the solution was analyzed for the remaining Pb 2+ by AAS. The results showed that the increase in temperature was followed by the increase in amount of Pb 2+ adsorbed. The maximum sorption was at 55 o C where 74.5% of initial Pb 2+ was adsorbed or it was 0.12412 mg/g adsorbent. It was also found that the Freundlich isotherm model was superior to the others. Keywords: adsorption, lead pollution, rice hull ash, isotherm adsorption model

    Item Type: Article
    Subjects: T Technology > TP Chemical technology
    Divisions: UNSPECIFIED
    Depositing User: mr azis r
    Date Deposited: 13 May 2013 19:00
    Last Modified: 13 May 2013 19:00
    URI: https://eprints.uns.ac.id/id/eprint/663

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