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All Journal Elektron Jurnal Ilmiah TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of Engineering and Technological Sciences JURNAL NASIONAL TEKNIK ELEKTRO Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Indonesian Journal of Electrical Engineering and Computer Science Andalasian International Journal of Applied Science, Engineering, and Technology Prosiding Seminar Nasional Sisfotek (Sistem Informasi dan Teknologi Informasi) Jurnal Andalas: Rekayasa dan Penerapan Teknologi Jurnal Rekayasa elektrika
Ariadi Hazmi
Andalas University
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Other

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Journal : Journal of Engineering and Technological Sciences

 1 
Removal of Microorganisms in Drinking Water using Pulsed High Voltage Hazmi, Ariadi; Desmiarti, Reni; Waldi, Eka Putra; Darwison, D.
Journal of Engineering and Technological Sciences Vol 45, No 1 (2013)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (224.392 KB) | DOI: 10.5614/j.eng.technol.sci.2013.45.1.1

Abstract

A pulsed high voltage was used to remove microorganisms in drinking water. The effects of the pulsed high voltage on pH, conductivity, temperature and oxidation reduction potential (ORP) of the drinking water were investigated. The observed results show that the removal efficiency with respect to fecal coliforms and total coliforms increased with the increase of the pulsed high voltage. The removal efficiency for microorganisms such as fecal coliforms and total coliforms was in the range 25-100% and 44-100%, respectively, after the water was exposed to a pulsed high voltage of 5-10 kV for 60 minutes. An increase of the pulsed high voltage caused a decrease in the conductivity and ORP with operational time.
Preliminary Study on Treatment of Palm Oil Mill Effluent (POME) by Sand Filtration-DBD Plasma System Hazmi, Ariadi; Desmiarti, Reni; Waldi, Eka Putra; Emeraldi, Primas
Journal of Engineering and Technological Sciences Vol 48, No 1 (2016)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (240.445 KB) | DOI: 10.5614/j.eng.technol.sci.2016.48.1.3

Abstract

In the palm oil industry, open ponding, aerobic and anaerobic digestion, physicochemical treatment and membrane filtration are generally applied as conventional treatments of palm oil mill effluent (POME). In this study, a sand filtration-dielectric barrier discharge (DBD) system was investigated as an alternative process for treating POME. This system can reduce land usage, processing time and costs compared to conventional systems. The removal efficiency of chemical oxygen demand (COD), biological oxygen demand (BOD5), and oil-grease in relation to the applied voltage were studied. Furthermore, the pH and temperature profiles were investigated. The obtained results indicate that the removal efficiency of COD, BOD5, and oil-grease increased with an increase of the applied voltage. The electrical energy consumption needed is about 10.56 kWh/L of POME.
Disinfection Performance against Salmonella Typhi in Water by Radio Frequency Inductive Couple Plasma System Desmiarti, Reni; Hazmi, Ariadi; Li, Fusheng
Journal of Engineering and Technological Sciences Vol 49, No 6 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.975 KB) | DOI: 10.5614/j.eng.technol.sci.2017.49.6.3

Abstract

The disinfection performance of the radio frequency inductively coupled plasma (RFICP) system against Salmonella Typhi in water was examined using continuous flow experiments. The evaluation was based on disinfection efficiency, death rate constant, disinfection yield, and energy consumption. For all experiments the electromagnetic flux generated in the plasma reactor varied from 4 to 6 W/cm2. The disinfection efficiency and death rate constant of Salmonella Typhi decreased with the increase of the initial number of Salmonella Typhi bacteria. The disinfection yield increased from 784 to 1889 CFU/KWh and the energy consumption decreased from 0.28 to 0.07 KWh/L with the flowrate increasing from 5 to 20 mL/minute. The flowrate is an important parameter in predicting disinfection performance against pathogenic bacteria in water to design drinking water treatment plants.
Removal of Microorganisms in Drinking Water using Pulsed High Voltage Ariadi Hazmi; Reni Desmiarti; Eka Putra Waldi; D. Darwison
Journal of Engineering and Technological Sciences Vol. 45 No. 1 (2013)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2013.45.1.1

Abstract

A pulsed high voltage was used to remove microorganisms in drinking water. The effects of the pulsed high voltage on pH, conductivity, temperature and oxidation reduction potential (ORP) of the drinking water were investigated. The observed results show that the removal efficiency with respect to fecal coliforms and total coliforms increased with the increase of the pulsed high voltage. The removal efficiency for microorganisms such as fecal coliforms and total coliforms was in the range 25-100% and 44-100%, respectively, after the water was exposed to a pulsed high voltage of 5-10 kV for 60 minutes. An increase of the pulsed high voltage caused a decrease in the conductivity and ORP with operational time.
Disinfection Performance against Salmonella Typhi in Water by Radio Frequency Inductive Couple Plasma System Reni Desmiarti; Ariadi Hazmi; Fusheng Li
Journal of Engineering and Technological Sciences Vol. 49 No. 6 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.6.3

Abstract

The disinfection performance of the radio frequency inductively coupled plasma (RFICP) system against Salmonella Typhi in water was examined using continuous flow experiments. The evaluation was based on disinfection efficiency, death rate constant, disinfection yield, and energy consumption. For all experiments the electromagnetic flux generated in the plasma reactor varied from 4 to 6 W/cm2. The disinfection efficiency and death rate constant of Salmonella Typhi decreased with the increase of the initial number of Salmonella Typhi bacteria. The disinfection yield increased from 784 to 1889 CFU/KWh and the energy consumption decreased from 0.28 to 0.07 KWh/L with the flowrate increasing from 5 to 20 mL/minute. The flowrate is an important parameter in predicting disinfection performance against pathogenic bacteria in water to design drinking water treatment plants.
Co-Authors . Darwison Abral, Hairul Akbar Abadi, Akbar Andrew Kurniawan Vadreas Arief Hadiwibowo Aulia Aulia Budi Sunaryo Budi Sunaryo, Budi Corio, Dean Dasrinal Tessal Desmiarti, Reni Edwardo Edwardo Eka Putra Waldi Fusheng Li Hamdi, Khairil Hanalde Andre Harahap, Partaonan Li, Fusheng M. H. Ahmad Minoru Sasaki Mohd Hafizi Ahmad Muhammad Imran Hamid Muhammad Rusydi H. Mulyadi, Syaifa Novizon, Novizon Pratama, Rizki Wahyu Primas Emeraldi Reni Desmiarti Reni Desmiarti Riza Widia Rudy Fernandez Rusydi, Muhammad Ilhamdi Seftiani, Yudia Meka Syukri Arief Tessal, Dasrinal Timor, Agus Rahmad Yuhefizar Yuhefizar Yulastri . Zulka Hendri