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All Journal Jurnal Teknik International Journal of Engagement and Empowerment (IJE2)
Ananda, Lintang Rizkyta
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Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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EVALUATION GUIDANCE OF LIQUID WASTE PROCESSING SYSTEM IN ELECTROPLATING UMKM CV. XYZ Sobarsah, G. Awaludin; Ananda, Lintang Rizkyta; Rafiani, Alissya; Ulsak, Mohammad Ghimnastiar; Mukti, Rendi
International Journal of Engagement and Empowerment (IJE2) Vol. 5 No. 1 (2025): International Journal of Engagement and Empowerment
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/ije2.v5i1.207

Abstract

Development in the industrial sector on the one hand will produce goods and services that are beneficial for the welfare of the people, and on the other hand, industrial activities will produce waste. The problem of industrial waste is increasingly worrying, especially the waste produced generally contains toxic and hazardous chemicals. One of them is waste containing heavy metals. This community research aims to assist in the evaluation of the electroplating liquid waste processing process at UMKM CV. XYZ with parameters of Cr, Zn, Cd, CN-, total suspended solids (TSS) and acidity values ​​(pH). The method used is to apply SK. MENLH. No. KEP-51 / MENLH / 10/1995, if the waste is directly disposed of into the environment it will cause pollution to other living things. Therefore, the process of reducing the concentration of metals is carried out by neutralization and coagulation, so that the metals that are discharged are in accordance with the quality standard. The results of the application concluded that the inlet concentration of chromium metal was 0.48 µg/L, zinc 1.83 mg/L, cyanide compound 0.02 mg/L, total suspended solids (TSS) 195.3 and the degree of acidity (pH) 10.6 and decreased to chromium metal 0.19 µg/L, zinc 1.48 mg/L, cyanide compound 0.0043 mg/L, total suspended solids (TSS) 52.6 and the degree of acidity (pH) 9 at the outlet that is discharged into the environment. So that the efficiency level of each parameter is obtained: TSS 73.11%, pH 12.36%, chromium metal 43.75%, zinc 19.13% and cyanide compound 78.5%.
An Overview of The Open-Circuit Voltage Thermodynamics on Vanadium Redox Flow Battery and Zn-Air Redox Flow Battery Ulsak, Mohammad Ghimnastiar; Ananda, Lintang Rizkyta; Sobarsah, G. Awaludin; Titani, Fena Retyo
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 25 No 1 (2026): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol25no1.795

Abstract

The open circuit voltage's Nernst equation, which was first developed Walther Nernst more than a hundred years earlier, is essential to the study of electrochemical systems. Regretfully, adapted to complex methods (such as interactions with mixed potentials or ion-exchange membranes), the equation takes on erroneous forms due to the assumptions that underlie its derivation being frequently ignored in the literature. Regardless of how the electrochemical processes are expressed, these errors may be prevented by using an accurate thermodynamic derivation. In particular, the Nernst equation must be correctly derived in order to describe zinc-air batteries and vanadium redox flow batteries. Non-equilibrium thermodynamics is where the rigorous route where the Nernst equation's formulation starts.
Co-Authors Gustiana Awaludin Sobarsah Mukti, Rendi Rafiani, Alissya Titani, Fena Retyo Ulsak, Mohammad Ghimnastiar