FEASIBILITY STUDY OF KAPPA-CARRAGEENAN EXTRACT FROM SEAWEED (EUCHEUMA COTTONII) AS AN ORGANIC INHIBITOR IN SULFURIC ACID ENVIRONMENTS

• Main Author: Robby Julianda Pratama, M
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/50068
• Institution: Institut Teknologi Bandung

Corrosion inhibitors are compounds or chemical substances that are added to an environment to minimize corrosion attacks. The use of inhibitors can be applied to prevent corrosion of the inner surface layer of a pipe. Up until now, there have been many studies on corrosion inhibitors, especially on the production of organic inhibitors to reduce the use of inorganic inhibitors that can cause environmental damage. Seaweed is a type of plant that has potential as an organic inhibitor. A publication explains that the inhibitor made from seaweed extract, especially kappa-carrageenan, has a good efficiency inhibition on magnesium metal, but this research has not been continued to be tested on other types of metals. In this research, a literature study was conducted from several previous research data to identify the potential of kappa-carrageenan as an organic inhibitor in API 5L X65 pipe in a sulfuric acid environment. The inhibition efficiency value of 71.73% obtained from the results of the immersion test on the API 5L X65 pipe specimen in the sulfuric acid environment for 24 hours after the addition of kappa-carrageenan inhibitor. The results of visual observations and SEM tests prove that kappa-carrageenan can be adsorbed and form a passive layer to minimize corrosion attacks on the metal surface of API 5L X65 in a sulfuric acid environment. These results are considered quite good because it can outperform the performance of several existing inorganic inhibitors.