Hartatik, Deviani Dwi (2019) Proses Elektrooksidasi Menggunakan Anoda Boron Doped Diamond (BDD) Dan Dimensionally Stable Anode (DSA) Untuk Meningkatkan Indeks Biodegradabilitas Lindi. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
03211540000010-undergraduated thesis_Deviani Dwi Hartatik.pdf Download (5MB) | Preview |
Abstract
Pengolahan lindi TPA Ngipik dengan proses biologis berupa Anaerobic Baffled Reactor (ABR) sulit menurunkan polutan organik recalcitrant. Akibatnya effluen yang dihasilkan masih belum memenuhi baku mutu. Oleh karena itu, diperlukan pre-treatment untuk menurunkan polutan organik tersebut. Metode fisik-kimia berupa elektrooksidasi merupakan alternatif pengolahan awal yang tepat karena memiliki efisiensi tinggi. Proses elektrooksidasi dipengaruhi oleh kerapatan arus, pH serta jenis elektroda. Tujuan dari penelitian ini adalah untuk menganalisis pengaruh variasi kerapatan arus dan volume efektif reaktor terhadap efisiensi proses elektrooksidasi lindi dengan anoda boron-doped diamond (BDD) dan dimensionally stable anode (DSA). Efisiensi dari proses ini dinilai berdasarkan peningkatan rasio konsentrasi BOD5/COD (indeks biodegradabilitas) dan konsumsi energi spesifik. Penelitian ini dilakukan dalam skala laboratorium menggunakan reaktor elektrooksidasi yang terbuat dari akrilik dengan volume efektif 80 mL. Anoda yang digunakan yaitu borondoped diamond (8 cm2) dan dimensionally stable anode (6 cm2) serta katoda stainless steel dengan luas yang sama. Sistem yang digunakan yaitu sistem batch recirculation, waktu operasi 4 jam dengan pengkondisian pH 3 dan penambahan 0,05 M NaCl. Penelitian ini terdiri dari penelitian pendahuluan dan penelitian utama. Pada penelitian pendahuluan dilakukan uji karakteristik awal lindi dan penentuan debit operasional reaktor. Pada penelitian utama dilakukan variasi volume efektif reaktor (1/12,5, 1/18,75 dan 1/25) dan variasi kerapatan arus (10 mA cm-2, 30 mA cm-2 dan 50 mA cm-2). Parameter yang dianalisis meliputi
COD, BOD5, rasio BOD5/COD serta dilakukan monitoring terhadap pH, TDS dan Cl-. Hasil penelitian menunjukkan bahwa target peningkatan indeks biodegradabilitas telah tercapai. Indeks biodegradabilitas sebesar 0,5792 (8 kali lipat) dicapai oleh anoda boron-doped diamond (BDD) pada kerapatan arus 30 mA cm-2 dan rasio volume efektif 1/12,5. Pada kerapatan arus dan rasio volume efektif yang sama setelah 15 menit operasional reaktor tercapai penyisihan massa COD sebesar 48% (0,72 g) dengan konsumsi energi spesifik 0,0004 kWh g-1
===============================================================================================================================
Leachate treatment at Ngipik Landfill with the biological process of Anaerobic Baffled Reactor (ABR) is difficult to reduce recalcitrant organic pollutants. As a result, the effluent produced does not comply with the quality standard. Therefore, a pre-treatment is required. The physico-chemical method such as electrooxidation is an appropriate pre-treatment alternative because it has high efficiency in removing such pollutants. The efficiency of electrooxidation process is influenced by pH, electrode type, and current density. The purpose of this study was to examine the effect of current density and reactor effective volume ratio on the efficiency of leachate electrooxidation process using boron-doped diamond (BDD) anodes and dimensionally stable anode (DSA). The efficiency of the process is assessed based on the enhancement of BOD5/COD ratio (biodegradability index) and the specific energy consumption. This research was carried out on a laboratory scale using an electrooxidation reactor made of acrylic with an effective volume of 80 mL. The anodes used were BDD (8 cm2) and DSA (6 cm2) while the cathode was stainless steel with the same area. The system was run in a batch recirculation mode with 4 hour-operation time. The initial pH was set to 3, and 0.05 M NaCl was added as the supporting electrolyte. This research consists of preliminary research and main research. In the preliminary step, the initial leachate characteristics were analyzed and the the operational flow rate was determined. The main study evaluate the effect of effective volume ratio (1/12.5, 1 / 18.75, and 1/25) and current density (10, 30, and 50 mA cm-2). The parameters analyzed were COD, BOD5, and BOD5/COD ratio. Besides, pH, TDS, and Cl- were monitored. The results showed that the highest increase in the biodegradability index of leachate (up to 0.5792 or 8 times higher) was achieved by BDD anode at current density of 30 mA cm-2 with an effective volume ratio of 1/12.5. Under the same operational condition the best removal efficiency of COD was also achieved (48%, 0.72 g) with specific energy consumption 0.0004 kWh g- 1 after 15 minutes operation.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Biodegradability, boron-doped diamond, dimensionally stable anode, electrooxidation, leachate |
| Subjects: | 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 > TD480.5 Electrodialysis T Technology > TD Environmental technology. Sanitary engineering > TD795.7 Sanitary landfills. Leachate--Purification. |
| Divisions: | Faculty of Civil Engineering and Planning > Environment Engineering > 25201-(S1) Undergraduate Thesis |
| Depositing User: | Deviani Dwi Hartatik |
| Date Deposited: | 18 Jul 2024 03:25 |
| Last Modified: | 18 Jul 2024 03:25 |
| URI: | http://repository.its.ac.id/id/eprint/66080 |
Actions (login required)
 |
View Item |