Napitupulu, Michelle Maria Magdalena and Dr. Ir. A. Tunggul Sutan Haji,, MT and Dr. Eng. Akhmad Adi S., STP, M.Eng (2022) Pengaruh Tegangan terhadap Penurunan Kandungan Besi (Fe) pada Air Lindi Menggunakan Metode Elektrokoagulasi. Sarjana thesis, Universitas Brawijaya.
Abstract
Sampah adalah limbah dari aktivitas manusia yang umumnya berbentuk padat. Sampah yang menumpuk di Tempat Pemrosesan Akhir (TPA) dapat mengakibatkan tercemarnya lingkungan dan berisiko terhadap kesehatan penduduk setempat karena dekomposisi sampah dan masuknya air hujan ke dalam tumpukan sampah sehingga menghasilkan air lindi (leachate). Air lindi adalah bahan pencemar yang mengandung berbagai polutan seperti ammonia, senyawa organik dan anorganik, organisme biologis, senyawa beracun dan logam berat seperti (Cd, Cu, Fe, Zn, Mn dan lain-lainnya). Jika air lindi meresap ke dalam tanah, maka dapat mencemari air tanah sebagai sumber kehidupan masyarakat. Oleh karena itu, dibutuhkan pengolahan air lindi yang dapat menurunkan kadar polutan yang terkandung dalam air lindi. Salah satu metode alternatif pengolahan air lindi adalah elektrokoagulasi. Penelitian ini bertujuan untuk menganalisis pengaruh tegangan terhadap penurunan kandungan logam besi (Fe) pada air lindi menggunakan metode elektrokoagulasi. Penelitian ini diawali dengan penelitian pendahuluan kemudian dilanjutkan penelitian perlakuan variasi tegangan. Pada penelitian pendahuluan, percobaan dilakukan dengan variasi pH (3, 6, dan pH default) dan waktu proses elektrokoagulasi selama 15, 30, dan 45 menit. Setelah didapat pH dan waktu kontak terbaik, dilanjutkan percobaan dengan variasi jenis elektroda (anoda-katoda) Al-Al, Al-Fe, Fe-Al, dan Fe-Fe. Penelitian perlakuan variasi tegangan menggunakan tegangan sebesar 12, 24, 36, dan 48 volt. Setelah proses elektrokoagulasi, dilakukan pengendapan selama 10 menit kemudian disaring dan dilakukan pengujian berdasarkan parameter, sehingga didapat data hasil penelitian yaitu besarnya penyisihan Total Suspended Solid (TSS), Total Dissolved Solid (TDS), dan kandungan Besi (Fe) serta pH air hasil proses elektrokoagulasi. Berdasarkan hasil penelitian pendahuluan, perlakuan variasi terbaik dalam proses elektrokoagulasi pada air lindi yaitu kondisi pH awal sampel 3 dengan waktu proses elektrokoagulasi selama 15 menit menggunakan elektroda aluminium (Al-Al). Variasi tersebut digunakan sebagai acuan dalam penelitian perlakuan variasi tegangan. Berdasarkan hasil penelitian perlakuan variasi tegangan, nilai pH pada setiap variasi tegangan 12, 24, 36, dan 48 volt berturut-turut yaitu 8,06, 8,20, 8,50, dan 8,77. Efisiensi penurunan kandungan Fe (%) variasi tegangan 12, 24, 36, dan 48 volt berturut-turut adalah 95,29%, 95,51%, 96,01%, dan 97,58%. Efisiensi penyisihan konsentrasi TSS (%) variasi tegangan 12, 24, 36, dan 48 volt berturut-turut adalah 98,57%, 99,23%, 99,56%, dan 98,68%. Efisiensi penyisihan konsentrasi TDS (%) variasi tegangan 12, 24, 36, dan 48 volt berturut-turut adalah 14,11%, 5,52%, -2,69%, dan -10,04%. Penambahan tegangan berpengaruh signifikan terhadap penetralan pH, penurunan konsentrasi TSS, penaikan konsentrasi TDS, serta penurunan kandungan Fe. Tegangan optimal dalam menurunkan kandungan Fe hingga nilai toleransi 10% dibawah baku mutu yaitu besar tegangan 12 volt dengan waktu proses elektrokoagulasi selama 9,77 menit. Sedangkan tegangan optimal dalam menurunkan konsentrasi TSS hingga nilai toleransi 10% dibawah baku mutu yaitu besar tegangan 12 volt dengan waktu proses elektrokoagulasi selama 1,85 menit.
English Abstract
Garbage is waste from human activities which is generally in solid form. Garbage that accumulates in the Final Processing Site (TPA) can result in environmental contamination and pose a risk to the health of the local population due to the decomposition of waste and the entry of rainwater into the pile of garbage to produce leachate. Leachate is a pollutant that contains various pollutants such as ammonia, organic and inorganic compounds, biological organisms, toxic compounds and heavy metals such as (Cd, Cu, Fe, Zn, Mn and others). If leachate seeps into the ground, it can contaminate groundwater as a source of community life. Therefore, leachate treatment is needed that can reduce the levels of pollutants contained in leachate. One alternative method of leachate treatment is electrocoagulation. This study aims to analyze the effect of voltage on the decrease in iron (Fe) metal content in leachate using the electrocoagulation method. This research begins with preliminary research and then continues with the main research. In the preliminary study, experiments were carried out with variations in pH (3, 6, and the default pH) and the electrocoagulation process for 15, 30, and 45 minutes. After obtaining the best pH and contact time, the experiment was continued with various types of electrodes (anode-cathode) Al-Al, Al-Fe, Fe-Al, and Fe-Fe. The main research was carried out using a Completely Randomized Design (CRD) with variations in the voltage used of 12, 24, 36, and 48 volts. After the electrocoagulation process, it was deposited for 10 minutes then filtered and tested based on parameters, so that the data obtained from the research are the amount of removal of Total Suspended Solid (TSS), Total Dissolved Solid (TDS), the content of Iron (Fe) and the pH of the water resulting from the electrocoagulation process. Based on the results of preliminary research, the best variation in the electrocoagulation process in leachate is the initial pH condition of sample 3 with an electrocoagulation process time of 15 minutes using aluminum (Al-Al) electrodes. This variation is used as a reference in the study of stress variation treatment. Based on the results of the voltage variation treatment, the pH values for each voltage variation were 12, 24, 36, and 48 volts, respectively, namely 8,06, 8,20, 8,50, and 8,77. The efficiency of reducing Fe content (%) for voltage variations of 12, 24, 36, and 48 volts was 95,29%, 95,51%, 96,01%, and 97,58%, respectively. The removal efficiency of TSS concentration (%) for 12, 24, 36, and 48 volt voltage variations were 98,57%, 99,23%, 99,56%, and 98,68%, respectively. The removal efficiency of TDS concentration (%) for 12, 24, 36, and 48 volt voltage variations were 14,11%, 5,52%, -2,69%, and -10,04%, respectively. The addition of voltage has a significant effect on pH neutralization, decreased TSS concentration, increased TDS concentration, and decreased Fe content. The optimal voltage in reducing the Fe content to a tolerance value of 10% below the quality standard is 12 volts with an electrocoagulation process time of 9,77 minutes. The optimal voltage in reducing the TSS concentration to a tolerance value of 10% below the quality standard is 12 volts with an electrocoagulation process time of 1,85 minutes.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0522100393 |
| Uncontrolled Keywords: | Air lindi, Besi (Fe), Elektrokoagulasi, Pengaruh Tegangan,Electrocoagulation, Iron (Fe), Leachate, The Effect of Voltage |
| Subjects: | 600 Technology (Applied sciences) > 630 Agriculture and related technologies |
| Divisions: | Fakultas Teknologi Pertanian > Keteknikan Pertanian |
| Depositing User: | soegeng sugeng |
| Date Deposited: | 31 Jan 2023 02:28 |
| Last Modified: | 31 Jan 2023 02:28 |
| URI: | http://repository.ub.ac.id/id/eprint/197138 |
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