Pengaruh Penambahan Medan Magnet Terhadap Kinerja Proses Elektrokoagulasi Pada Pengolahan Distillery Spent Wash

Putri, Gestika Charisma Tri and Martasari, Amelia (2026) Pengaruh Penambahan Medan Magnet Terhadap Kinerja Proses Elektrokoagulasi Pada Pengolahan Distillery Spent Wash. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Air limbah distillery spent wash umumnya berwarna gelap, berbau tidak sedap, serta mengandung bahan organik yang dihasilkan setelah proses distilasi etanol. Limbah ini memiliki karakteristik pencemar yang tinggi salah satunya pada konsentrasi Chemical Oxygen Demand (COD) yaitu berkisar antara 48.200 - 173.000 mg/L. Tanpa pengolahan yang memadai, kandungan COD yang tinggi dapat menyebabkan penurunan kadar oksigen terlarut di perairan dan berpotensi menimbulkan kerusakan lingkungan. Tujuan dari penelitian ini, yaitu menganalisis pengaruh kuat arus dan waktu kontak terhadap nilai COD, turbidity, dan TDS pada distillery spent wash menggunakan proses elektrokoagulasi, mengevaluasi pengaruh penambahan medan magnet terhadap kinerja proses elektrokoagulasi dalam pengolahan limbah distillery spent wash dan menentukan kondisi operasi optimal proses elektrokoagulasi dalam pengolahan limbah distillery spent wash. Metode yang digunakan dalam penelitian ini adalah pengolahan limbah menggunakan proses elektrokoagulasi dengan penambahan medan magnet serta pengujian COD menggunakan metode reflux tertutup. Hasil penelitian menunjukkan bahwa peningkatan kuat arus dan waktu kontak mampu meningkatkan efisiensi penyisihan polutan. Pada proses tanpa medan magnet, kondisi terbaik diperoleh pada kuat arus 30 A selama 120 menit dengan penurunan COD dari 2038 ppm menjadi 377,1 ppm, turbidity dari 8,79 NTU menjadi 0,79 NTU, dan TDS dari 5300 ppm menjadi 285 ppm. Penambahan medan magnet mampu meningkatkan kinerja elektrokoagulasi, dengan hasil terbaik COD sebesar 302,7 ppm pada 30 A selama 120 menit, turbidity sebesar 0,62 NTU pada 10 A selama 90 menit, dan TDS sebesar 247 ppm pada 30 A selama 120 menit.
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Distillery spent wash is generally dark in color, emits an unpleasant odor, and contains high levels of organic after etanol distillation process. This wastewater exhibits severe pollutant characteristics, particullary Chemical Oxygen Demand, with concentrations ranging from 49,200 to 173,000 mg/L. Without proper treatment, high COD can deplete dissolved oxygen and cause significant environmental degradation. The objectives of this study are to analyze the effects of electric current intensity and contact time on COD, turbidity, and TDS in distillery spent wash using the electrocoagulation process, to evaluate the impact of magnetic field addition on the performance of electrocoagulation in treating distillery spent wash, and to determine the optimal operating conditions of the electrocoagulation process for distillery spent wash treatment. The method employed in this study involves wastewater treatment using electrocoagulation assisted by a magnetic field, with COD analysis conducted using the closed reflux method. The results showed that increasing the current intensity and contact time improved pollutant removal efficiency. In the electrocoagulation process without magnetic field addition, the best condition was obtained at 30A for 120 minutes, with COD decreasing from 2038 ppm to 377.1 ppm, turbidity decreasing from 8.79 NTU to 0.79 NTU, and TDS decreasing from 5300 ppm to 285 ppm. The addition of a magnetic field enhanced the electrocoagulation performance, with the best COD removal reaching 302.7 ppm at 30A for 120 minutes, the best turbidity value reaching 0.62 NTU at 10A for 90 minutes, and the best TDS value reaching 247 ppm at 30A for 120 minutes.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	COD, Distillery Spent Wash, Elektroda Aluminium, Elektrokoagulasi, COD, Distillery Spent Wash, Aluminium Electrode, Electrocoagulation
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD375 Turbidity--Measurement. T Technology > TD Environmental technology. Sanitary engineering > TD420 Water pollution T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants T Technology > TD Environmental technology. Sanitary engineering > TD455 Chemical precipitation. Coagulation. Flocculation. Water--Purification--Flocculation. T Technology > TD Environmental technology. Sanitary engineering > TD899 Waste control in special industries, plants, processes, etc
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering
Depositing User:	Amelia Martasari
Date Deposited:	29 Jul 2026 06:11
Last Modified:	29 Jul 2026 06:11
URI:	http://repository.its.ac.id/id/eprint/139278

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