Esthi Kusdarini ¹, Agus Budianto ²

Affiliations
1 Mining Engineering Department, Adhi Tama Surabaya Institute of Technology, Surabaya, ID
2 Chemical Engineering Department, Adhi Tama Surabaya Institute of Technology, Surabaya, ID

Abstract

Objectives: Testing of a cation exchanger based water treatment apparatus and an Amberlite IR 120 Na resin medium to reduce the manganese content in the well-water is proposed. Methods/Statistical Analysis: Testing was done by wellwater treatment in a fixed bed cation exchanger in continuous flow. The variables used were the resin mass and flow rate and its effect on the manganese concentration in the outflow of the equipment. Manganese content was analyzed by Atomic Absorption Spectrophotometry (AAS) method. The isothermal adsorption equation was tested by the Freundich and Langmuir equations. Findings: The result of this research showed Amberlite resin IR 120 Na adsorbed manganese ion was about 96.3-98.9%; the optimal resin mass about 20 grams with a flow rate about 0.04 L.s-1 when viewed from an economic point. Resin absorption power to manganese increases with decreasing flow rate and increasing resin mass. Freundlich equation with constant n = 0.6539 and K_f = 4.6644 with correlation coefficient 0.7957. Langmuir equation with a constant A_s = -0.0927 and K_b = -6.3820 with a correlation coefficient -0.4314. Application/Improvements: Cation exchanger using Amberlite IR 120 Na resin media capable of remove manganese in well-water with efficiency > 96% and resin can be regenerated again.

Full Text