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All Journal Sainteks: Jurnal Sain dan Teknik
Galu Murdikaningrum
Universitas Bandung Raya
Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering

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Journal : Sainteks: Jurnal Sain dan Teknik

 1 
Sistem Pengolahan Air Limbah Elektroplating Berbasis Nikel Galu Murdikaningrum; Djaenudin Djaenudin; Kenny Kencanawati; Wendi Hermawan
Sainteks: Jurnal Sain dan Teknik Vol 1 No 2 (2019): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v1i2.126

Abstract

In line with industrial development and scientific and technological advancement, the use of metals cannot be separated from human life. Aside from benefits, the rapidly increasing industrial developments also give negative impact from their heavy metal waste. Some electroplating waste treatment methods are studied in this research, specifically electrodeposition method, electrocoagulation, and pH 9 hydroxide coagulation method. This research aimed to determine the most effective method and conditions from the 3 methods mentioned above in reducing contents of nickel in the wastewater. The artificial wastewater was made to have the same concentration to waste from electroplating industry; specifically 2154.20 mg/L. The most effective reduction of nickel for this method occurs at 6 volts with final concentration of 404.86 mg/L. The treatment result from electrodeposition was then further processed through two different processes, a electrocoagulation method and pH 9 hydroxide coagulation method. Electrocoagulation process was done for 1 hour with variation in voltage at 5; 7, 5; and 10 volts. Metal Al was used at the anode, while metal Cu was at the cathode. The optimum voltage for this process occurs at 10 volts with final concentration of nickel at 164,98 mg/L, nickel elimination efficiency was at 59.25 %, specific energy at 1.0777 kWh/kg and current efficiency at 32.3 %. Sample from electrodeposition which was processed further with pH 9 coagulation process produced final nickel concentration at 25.59 mg/L, nickel elimination efficiency was at 93.68 %. Keywords: electrocoagulation; electrodeposition; electroplating; hydroxide coagulation; nickel.
Utilization of Sludge from Textile Wastewater Treatment Plants as Raw Material for Iron Coagulant Galu Murdikaningrum; Kenny Kencanawati; Bagus R Ramdhani; Rizal Ramdani
Sainteks: Jurnal Sain dan Teknik Vol 4 No 2 (2022): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i2.454

Abstract

Treatment of liquid waste using iron coagulant produces a by-product in the form of sludge which requires large handling costs. To reduce environmental pollution and sludge treatment costs, the sludge will be used as raw material for the manufacture of iron coagulant. This study aims to determine whether the sludge from textile WWTP can be used as raw material for iron coagulant. To determine the effectiveness of coagulants made from sludge, this study will compare the results of the coagulation-flocculation process using commercial iron coagulants and iron coagulants made from sludge as well as mixed coagulants with ratios of commercial iron coagulants to iron coagulants made from sludge of 70%, 60%, 50%, 40%, and 30%. The water quality resulting from the coagulation-flocculation process was indicated by pH, color turbidity, Total Dissolved Solid (TDS) and Total Suspended Solid (TSS). The results showed that the water quality of the coagulation-flocculation process was worse when mixed coagulant was used with a smaller ratio of commercial iron coagulant to iron coagulant made from sludge. A mixture of commercial iron coagulant and iron coagulant made from sludge that meets the quality standard for the TSS parameter is a mixed coagulant with a v/v ratio of 70%, while those less than 70% do not meet the quality standard.
Co-Authors Bagus R Ramdhani Djaenudin Djaenudin Kenny Kencanawati Kenny Kencanawati Rizal Ramdani Wendi Hermawan