Nugrahadi, Bayu Timothy and Widiputri, Diah Indriani and Kartawiria, Irvan S. (2021) Effect of Water Hyacinth Extract Addition to Different Types of Corrosion Media for Various Metals. Bachelor thesis, Swiss German University.

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Abstract

Metal materials are widely used in many different industries such as for building materials and industrial equipment. Recent researches started to develop green inhibitors to avoid toxic synthetic inhibitors to improve the metal’s strength from extensive exposure of corrosive media. From various organic materials, water hyacinth is one of them. The main focus of this work was to test the effect of the WH extract inhibitor in an extended period for iron, aluminum and stainless-steel. Previous researches have tested the inhibition efficiency of WH extract with gum arabic addition for 48 hours of immersion in corrosive media. Extended period of immersion could alter the efficiency in regards to the antioxidant activity. After 7 days of immersion, the highest efficiency for WH extract is 69.23% in tap water, 81.37% in saltwater, and 27.40% in vinegar (acetic acid) for iron while increasing the resistance by 0.3 ohm. Stainless-steel and aluminum suffered a very small to negligible weight loss with an increase of 0.1~2 ohm in electrical resistance for both. The addition of gum arabic successfully increased the efficiency for iron up to 99% and an increase of resistance by 1 ohm even after 7 days, 99.57% for stainless-steel and 100% for aluminum without any change in resistance.

Item Type:	Thesis (Bachelor)
Uncontrolled Keywords:	Antioxidant Activity, Corrosion, Corrosion Rate, Inhibitor, Metals, Phenolic Content, Water Hyacinth
Subjects:	Q Science > QK Botany > QK898 Anthocyanins T Technology > TJ Mechanical engineering and machinery > TJ807 Renewable energy sources T Technology > TP Chemical technology > TP155 Chemical engineering
Divisions:	Faculty of Life Sciences and Technology > Department of Sustainable and Energy Environment
Depositing User:	Faisal Ifzaldi
Date Deposited:	04 Jan 2022 12:20
Last Modified:	04 Jan 2022 12:20
URI:	http://repository.sgu.ac.id/id/eprint/2281

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