Pengolahan Limbah Cair Kegiatan Bengkel Menggunakan Metode Elektrokoagulasi

Hutami, Arifa Dias and Lisanto, Ricco Primario (2022) Pengolahan Limbah Cair Kegiatan Bengkel Menggunakan Metode Elektrokoagulasi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Semakin hari populasi kendaraan bermotor semakin meningkat, bahkan hampir setiap orang memilikidan membutuhkan kendaraan bermotor. Kepadatan aktivitas di jalan menuntut kenyamanan, sehinggakendaraan yang dipakai harus selalu siap dalam keadaan baik. Agarkendaraan selalu dalam keadaan baik maka diperlukan perawatan, serviceberkala dan perbaikan-perbaikan pada bagian yang rusak dari kendaraan.Dengan bertambahnya jumlah bengkel, baik bengkel yang berskala kecil dan besar, kegiatan kegiatannya akan dapat menghasilkan limbah. Salah satudari aktivitasperbengkelan yaitu kegiatan pencucian mesin ataupun cuci tangan yang dibuang ke lingkungan perairan atau badan air sungai tanpa dikelola terlebih dahulu.Untuk menanggulangi masalah tersebutperlu dilakukan upaya pengolahan limbah cair sebelum dibuang kelingkungan secara langsung. Pengolahan menggunakan metode elektrokoagulasi dapat menjadi alternatif untuk pengolahan limbah cair kegiatan bengkel. Metode elektrokoagulasi merupakan metode pengolahan air secara elektrokimia dimana pada anoda terjadi oksidasi atau pelepasan koagulan aktif berupa ion logam ke dalam larutan (biasanya aluminium atau besi), sedangkan pada katoda terjadi reaksi elektrolisis berupa reduksi yang menyebabkan pelepasangas hidrogen. Pada penelitian ini dilakukan pengolahan limbah cair kegiatan bengkeldengan metode elektrokoagulasi dengan menggunakan elektroda alumunium. Variabel yang digunakan yaitu variasijumlah plat menggunakan 4 dan 8 elektroda, waktu tinggal sebesar0, 15, 30,45, 60, 90dan 120 menit, dan variasi densitas arus sebesar 1125, 1250, dan 1437.5A/m2. Pada densitas arus 1125 A/m2terhadap nilai COD didapatkan nilai removal tertinggi sebesar 91% menggunakan 8 plat elektroda, untuk nilai turbiditas didapatkan nilai removal tertinggi sebesar 88% menggunakan 4 plat elektroda, dan untuk nilai logam berat besi (Fe) didapatkan nilai removal tertinggi sebesar 100% menggunakan 8 plat elektroda, pada densitas arus 1250 A/m2terhadap nilai COD didapatkan nilai removal tertinggi sebesar 90% menggunakan 8 plat elektroda, untuk nilai turbiditas didapatkan nilai removal tertinggi sebesar 86% menggunakan 8 plat elektroda, dan untuk nilai logam berat besi (Fe) didapatkan nilai removal tertinggi sebesar 100% menggunakan 8 plat elektroda, dan pada densitas arus 1437.5 A/m2terhadap nilai COD didapatkan nilai removal tertinggi sebesar 93% menggunakan 8 plat elektroda, untuk nilai turbiditas didapatkan nilai removal tertinggi sebesar 96% menggunakan 8 plat elektroda, dan untuk nilai logam berat besi (Fe) didapatkan nilai removal tertinggi sebesar 99% menggunakan 8 plat elektroda.
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The number of vehicles is increasing day by day, in fact almost everyone has and needs a vehicle. Because high activity on the road demands comfort, so the vehicle used must always be ready in good condition. In order for the vehicle to always be in good condition, maintenance, periodic service and repairs are needed on the damaged parts of the vehicle. With the increase in the number of workshops, both small and large scale workshops, their activities will be generate waste. Waste water from workshop activities, one of which is machine washing or hand washing, is dumped into the aquatic environment or river water bodies without being managed first. To overcome this problem, it is necessary to make efforts to treat liquid waste before being discharged into the environment directly. Processing using the electrocoagulation method can be an alternative for wastewater treatment for workshop activities.The electrocoagulation method is an electrochemical water treatment method where oxidation occurs at the anode or the release of active coagulant in the form of metal ions into solution (usually aluminum or iron), while at the cathode an electrolysis reaction occurs in the form of reduction which causes the release of hydrogen gas. In this study, wastewater treatment for workshop activities was carried out using the electrocoagulation method using aluminum electrodes. The variables used are variations in the number of plates using 4 and 8 aluminum (Al) electrodes, residence time of 0, 15, 30, 45, 60, 90 and 120minutes, and variations in current density of 1125, 1250, and 1437.5 A/m2.At a current density of 1125 A/m2 to the COD value, the highest removal value was 91% using 8 electrode plates, for the highest turbidity value removal value was 88% using 4 electrode plates, and for the value of heavy metal iron (Fe), the highest removal value was obtained 100% by using 8 electrode plates, at a current density of 1250 A/m2with the highest COD removal value obtained by 90% using 8 electrode plates. For the turbidity value, the highest removal value was 86% using 8 electrode plates, and for the value of heavy metal iron (Fe) the highest removal value was 100% using 8 electrode plates, and at a current density of 1437.5 A/m2to the COD value, the COD value was obtained. the highest removal was 93% using 8 electrode plates, for the turbidity value the highest removal value was 96% using 8 electrode plates, and for the value of heavy metal iron (Fe) the highest removal value was 99% using 8 electrode plates.

Item Type:	Thesis (Other)
Additional Information:	RSKI 628.162 2 Hut p-1 2022
Uncontrolled Keywords:	Aluminum, Electrocoagulation, Bike Repair Shop, Aluminium, Elektrokoagulasi, Limbah Cair Kegiatan Bengkel
Subjects:	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 Technology
Depositing User:	Anis Wulandari
Date Deposited:	08 Nov 2022 02:13
Last Modified:	08 Nov 2022 02:13
URI:	http://repository.its.ac.id/id/eprint/95062

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