Hidayati, Arum Sofiana (2019) Oksidasi Elektrokimia dengan Menggunakan Anoda BDD, Ti/IrO2, dan Ti/Pt pada Lindi Terolah secara Biologis. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Komposisi lindi yang beragam seperti zat organik-inorganik yang beberapa diantaranya merupakan senyawa refraktori dan beracun, akan menimbulkan masalah bagi lingkungan. Oleh karena itu, penting untuk dilakukan pengolahan agar efluen yang dihasilkan mampu memenuhi baku mutu lindi. Alternatif pengolahan lindi yang terintegrasi meliputi proses biologis-fisik-kimia salah satunya yaitu, Moving Bed Biofilm Reactor (MBBR) dikombinasikan dengan oksidasi elektrokimia. Pengolahan awal secara biologis bertujuan untuk menurunkan beban organik sehingga dapat mengurangi konsumsi energi pada pengolahan selanjutnya. Metode berbasis fisik-kimia berupa oksidasi elektrokimia merupakan alternatif yang tepat karena mampu mendegradasi polutan non-biodegradable, menghilangkan warna lindi, dan memiliki efisiensi penyisihan yang tinggi dalam waktu singkat. Proses oksidasi elektrokimia tersebut dipengaruhi oleh beberapa faktor, diantaranya jenis anoda, kerapatan arus, debit, dan pH. Tujuan penelitian ini adalah menentukan kuat arus optimum pada pengolahan elektrokimia menggunakan anoda BDD, Ti/IrO2, dan Ti/Pt untuk penyisihan polutan organik beserta amonium pada lindi yang telah terolah dengan MBBR. Kemudian, dihitung konsumsi energi untuk mengetahui efisiensi pengolahan. Penelitian ini dilakukan dalam skala laboratorium menggunakan reaktor elektrokimia yang terbuat dari akrilik berukuran 4 x 10 x 2 cm (80 mL). Anoda yang digunakan yaitu Boron-Doped Diamond (BDD), Titanium/Iridium-Oksida (Ti/IrO2), dan Titanium/Platina (Ti/Pt) dengan ukuran masing-masing 6 cm2, sedangkan untuk katodanya adalah stainless steel dengan ukuran 4 x 1,5 cm. Jenis konfigurasi reaktor adalah undivided cell dengan sistem aliran batch recirculation yang dijalankan selama 10 jam pada debit 5 mL s-1 untuk mengolah 2 L lindi. Pada penelitian utama dilakukan variasi kuat arus pada tiap jenis anoda. Parameter yang dianalisis meliputi pH, COD, BOD, TDS, klorida, klorin, nitrit, nitrat, amonium, dan TKN. Hasil menunjukkan bahwa kerapatan arus optimum pada anoda Ti/Pt adalah 400 mA dengan penyisihan COD sebesar 78% dan konsumsi energi 56,7 Wh g-1. Sementara, untuk anoda Ti/IrO2 dan BDD kuat arus 350 mA merupakan arus optimum dengan penyisihan COD masing-masing sebesar 76% (58,9 Wh g-1) dan 85% (36,9 Wh g-1).
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Refractory and toxic compounds contained in the landfill leachate lead to environmental problems. Thus, it is essential to apply effective treatment and capable of deal with the effluent quality standard. Application of biological processes integrated with electrochemical oxidation (EO) is one of alternatives. Biological process is applied as pretreatment, decreasing the organic load and consequently lowering the energy consumption on EO that acted as post-treatment technology. The physica chemical based method of electrochemical oxidation is the best alternative that can degrade non-biodegradable pollutant, eliminate color, and has a high removal efficiency within a short duration of process. The electrochemical oxidation process is influenced by several factors, including the type of anode, current density, flowrate, and pH. The aims of this study was to determine the optimum current density in EO process using several anodes i.e BDD, Ti/IrO2, and Ti/Pt to remove organic pollutants and amonium that has been treated with MBBR. Then, energy consumption is calculated to determine processing efficiency. This research was conducted on a laboratory-scale using undivided electrochemical reactor made of acrylic with effective volume 80 mL (4 × 2 × 10 cm). The anodes used are BDD, Ti/IrO2, and Ti/Pt while the cathode is stainless steel with each surface area 6 cm2. A 2 L landfill leachate was treated in the electrochemical reactor operated in batch recirculation at 5 mL s-1 for 10 hours, applying different current (350, 400 and 450 mA). The parameters analyzed were including pH, COD, BOD, TDS, chloride, chlorine, nitrite, nitrate, ammonium, and TKN. The results showed that the optimum current on the Ti/Pt anode was 400 mA to reduce 78% COD need 56.7 Wh g-1 of an energy consumption. While for anodes Ti/IrO2 and BDD have 58.3 350 mA as the optimum current with COD removal of 76% (58.9 Wh g-1) and 85% (36.9 Wh g-1), respectively.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Boron-Doped Diamond (BDD), Kuat Arus, Lindi, Oksidasi Elektrokimia, Titanium/Iridium-Oxides (Ti/IrO2), Titanium/Platinum (Ti/Pt) |
| 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, Environmental, and Geo Engineering > Environmental Engineering > 25201-(S1) Undergraduate Theses |
| Depositing User: | Arum Sofiana Hidayati |
| Date Deposited: | 18 Jul 2024 03:51 |
| Last Modified: | 18 Jul 2024 03:51 |
| URI: | http://repository.its.ac.id/id/eprint/65939 |
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