CATION EXCHANGE CAPACITY DETERMINATION OF QUARTZ, KAOLINITE AND CA-MONTMORILLONITE MIXTURE

• Main Author: Martino Y Sitinjak, Hans
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/67664
• Institution: Institut Teknologi Bandung

Chemical flooding of EOR (Enhanced Oil Recovery) is one of the method that usually done by oil industry for increasing the production of crude oil. One of the characteristic of clays that can determine the effectivity of the mixing of water, surfactant and oil is Cation Exchange Capacity (CEC). The CEC of clays could predict the ability of clay to absorb various subtances that presents in a system and the ammount of subtances that were absored by the clays will alter the effectivity of the mixing of oil and water. In this study, the CEC of often encountered clays in oil well Ca-montmorillonite and Kaolinite will be determined. These clays were mixed with quartz sand with a specific composition and then the CEC of every sample will be determined by titration and spectroscopy method. A-127 190918C surfactant is the source of surfactant that was being used for demineralized water and synthetic sea water, this surfactant was mixed in a mixing medium with concentration of 0%, 1% and 2% (weight/weight). NH4CH3COO 1M was used as a cation exchange agent. The CEC value that was obtained with tiration method shows no consistency and recognizeable pattern and the CEC value of quartz, kaolinite and Ca-montmorillonite using titration method consecutively are -0,67-1,67 mEq/100 g; -0,33-5,00 mEq/100 g; 2,00-8,00 mEq/100 g. For aquadest condition, using the AAS/AES method, the CEC of quartz, Kaolinite and Ca-montmorillonite consecutively are, 6,7 mEq/100 g -2.5 mEq/100 g and , 101 mEq/100g For sea water condition, the CEC of quartz, Kaolinite and Ca-montmorillonite consecutively are 1,2 mEq/100 g, 2 mEq/100g and 68 mEq/100g. The experiment shows that the range value of quartz, kaolinite and Ca-montmorillonite 1,2-6,7 mEq/100 g ; -2,5-2 mEq/100 g; 68-101 mEq/100 g. The presents of surfactant in the samples shows negative relation with the CEC of the sample and the effect of synthetic sea water on the CEC of each clay shows different correlation, positive correlation for Ca-montmorillonit and Quartz, and negative corellation for Kaolinite.