COMPARISON STUDY OF STAINLESS STEEL CYCLIC VOLTAMMOGRAMS IN VARIOUS NATURAL MEDIA ADDITION: PRODUCT AND VOLTAGE EFFICIENCY
Authors: Louise Isana Supiah Yosephine , Laksono Endang Widjajanti , Lestari Dewi Yuanita 
Published: December 2019

The cyclic voltammogram is widely used to analyse the electrolysis process. The use of various media, namely rambutan seed flour (Nephelium lappaceum), mango seed flour (Mangifera indica), breadfruit leaf powder (Artocarpus altilis), peria extract (Momordi charantia) and aloe vera extract (Aloe vera), in this study is to deliberately mimic the occurrence of those media in wastewater produced by several industries. The electrolysis analysis on the presence of several media would minimize the preparation steps on wastewater utilization for generating hydrogen as renewable energy. The research looks at the potential of wastewater as the raw material for the electrolysis process. In this research, stainless steel cyclic voltammograms were studied on water electrolysis. The electrolysis was done in base solution and adding various media, such as rambutan seed flour (Nephelium lappaceum), mango seed flour (Mangifera indica), breadfruit leaf powder (Artocarpus altilis), peria extract (Momordi charantia) and aloe vera extract (Aloe vera) in various concentrations, 0 - 10 g per litter of water. By reviewing the activity of a stainless steel electrode to decompose water molecules, the media generally caused the occurrence of covering by relatively large molecules around the electrode surface, resulting in decreased activity of the stainless steel electrodes. The optimum condition occurred with the addition of breadfruit leaf powder in all treatments with similar electrode activity as much as 1.68. The result could be implemented in a wastewater electrolysis processes containing the media to generate hydrogen gas.

ABSTRAK: Voltammogram berkitar banyak digunakan bagi menganalisis proses elektrolisis. Dalam kajian ini pelbagai jenis media telah sengaja digunakan seperti tepung biji rambutan (Nephelium lappaceum), tepung biji mangga (Mangifera indica), serbuk daun sukun (Artocarpus altilis), ekstrak peria (Momordi charantia) dan ekstrak lidah buaya (Aloe vera), bagi memimik terjadinya media-media tersebut dalam sisa air buangan yang terhasil daripada beberapa industri. Analisis elektrolisis pada pelbagai media dapat mengurangkan langkah-langkah persiapan pada penggunaan sisa air bagi menghasilkan hidrogen sebagai tenaga boleh baharu. Penilitian kajian ini bertumpu pada potensi sisa air sebagai bahan kasar bagi proses elektrolisis. Kajian ini adalah tentang elektrolisis air voltammogram berkitar pada keluli tahan karat. Proses elektrolisis telah dilakukan pada larutan dasar dan dengan menambah pelbagai media, seperti tepung biji rambutan (Nephelium lappaceum), tepung biji mangga (Mangifera indica), serbuk daun sukun (Artocarpus altilis), ekstrak petola (Momordi charantia) dan ekstrak lidah buaya (Aloe vera) dalam pelbagai kepekatan, 0 - 10 gram pada setiap liter air. Penurunan aktiviti elektrod keluli tahan karat telah disebabkan oleh aktiviti elektrod keluli tahan karat yang mengurai molekul air dan diliputi molekul-molekul besar pada permukaan elektrod. Keadaan optimum telah berlaku dengan penambahan serbuk daun sukun pada semua rawatan dengan aktiviti elektrod serupa sebanyak 1.68. Dapatan kajian dapat digunakan dalam proses elektrolisis sisa air yang mengandungi media bagi menghasilkan gas hidrogen.