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All Journal Journal of Physics: Theories and Applications Equilibrium Journal of Chemical Engineering
Deni Kurniawan
Universitas Sebelas Maret
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Materials Science & Nanotechnology Physics

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Performance of natural chlorophyll Amaranthus and Carica Papaya dye on TiO2 coating in the making of dye sensitized solar cell (DSSC) through the spin coating method Fernince Ina Pote; Agus Supriyanto; Fahru Nurosyid; Deni Kurniawan
Journal of Physics: Theories and Applications Vol 3, No 2 (2019): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (934.466 KB) | DOI: 10.20961/jphystheor-appl.v3i2.38292

Abstract

The natural dye extracted from Amaranthus dye and Carica Papaya dye which has been prepared in ethanol solution as a sensitizer on DSSC. The Spin coating method is used so that the deposition on TiO2 gets a homogeneous thin layer on the active area of the FTO substrate. The dye solution was tested for characterization using the Elkahfi I-V Meter and UV-Vis 1601 while the FTO structure substrate that had been prepared as a sandwich was tested using Keithley I-V type 2602A. The result of absorbance of dye is at a wavelength of 400 nm - 800 nm and there is also a shift in wavelength and peak absorption of the dye. The greatest efficiency was obtained from chlorophyll amaranthus which is 0.730% while chlorophyll Carica papaya obtained an efficiency of 0.432%. In the combination of Amaranthus dye and Carica papaya dye, the efficiency was 0.526%. High efficiency on TiO2 electrodes shows good performance on Dye-sensitized solar cells.
Optimizing Bioky Performance Using Super Small Vessel in Wastewater Treatment Installation at PT. X in Klaten Joko Waluyo; paryanto paryanto; Raihan Alamsyah; Deni Kurniawan; Ibnu Singgih Pranoto; Yulinar Pramesti Cahyani
Equilibrium Journal of Chemical Engineering Vol 8, No 1 (2024): Volume 8, No 1 July 2024
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v8i1.84831

Abstract

One of the causes of environmental pollution is liquid waste generated by industries, especially the printing industry. PT Macanan Jaya Cemerlang is one of the printing industries producing liquid waste that does not meet the quality standards. The purpose of this research is to optimize the performance of Bioky bacteria using the Super Small Vessel in the wastewater treatment plant at PT X Klaten. Treatment involves testing variables such as residence time and bacteria quantity's impact on TSS, MBAS, COD, BOD, pH, and ORP.The study employs anaerobic treatment with observed variables: residence time of 1; 2; and 3 days, and bacteria quantity of 2.4; 3.2; and 4 liters. Samples from each variable are then analyzed for pH, ORP, and TSS. COD, BOD, and MBAS are tested after obtaining the best TSS results from each variable.The research results indicate that longer residence time and increased bacteria quantity lead to greater reduction in TSS, COD, BOD, and MBAS, while pH approaches neutrality. Optimal conditions occur at a 3-day residence time with 4,0 liters of bacteria, resulting in a reduction of TSS, COD, BOD, and MBAS against the inlet by 99.75%, 95.47%, 94.84%, and 26.72%. Although the treated waste doesn't meet the established standards, it effectively reduces the pollution levels in PT X's wastewater. Keywords:Anaerobic, Efficiency, Printing Industry Liquid Waste, Super Small Vessel
Co-Authors Agus Supriyanto Fahru Nurosyid Fernince Ina Pote Ibnu Singgih Pranoto Joko Waluyo Paryanto Paryanto Raihan Alamsyah Yulinar Pramesti Cahyani