Perpindahan Massa Fase Cair Pada Pengolahan Lindi Tpa Sampah Kota Dalam Bioreaktor Anaerobik

Kahar, Abdul (2017) Perpindahan Massa Fase Cair Pada Pengolahan Lindi Tpa Sampah Kota Dalam Bioreaktor Anaerobik. Doctoral thesis, Institut Teknologi Sepuluh Nopember.

[img]
Preview
Text
3313301001-Disertation.pdf - Published Version

Download (6MB) | Preview

Abstract

Lindi TPA sampah kota merupakan limbah cair heterogen yang mengandung substrat organik dan anorganik kompleks terlarut yang biodegradable dan non-biodegradable. Perpindahan massa merupakan fenomena penting dalam rekayasa bioproses, yang tidak dapat diselesaikan secara lengkap dengan metode teoritis atau metode matematik. Penelitian ini bertujuan menganalisis perpindahan massa fase cair dan menentukan korelasi empirik koefisien perpindahan massa fase cair pada pengolahan lindi dalam bioreaktor anaerobik. Penelitian ini adalah eksperimen skala pilot dengan sistem batch. Perpindahan massa fase cair dianalisis menggunakan konsentrasi substrat yang diekspresikan sebagai COD. Difusi zat terlarut diekspresikan sebagai VFA. Penelitian ini menggunakan bioreaktor anaerobik dengan volume total 160L. Setelah dilakukan karakterisasi dan analisis kualitas lindi, selanjutnya perancangan bioreaktor anaerobik dengan desain sesuai kebutuhan penelitian. Kemudian dilakukan uji kebocoran dan kalibrasi dari sistem bioreaktor anaerobik. Perbandingan volume lindi:biogas pada bioreaktor adalah 70:30. Mikroorganisme yang digunakan berasal dari rumen sapi dan lindi dengan perbandingan 1 : 3 dan disaring untuk diambil ekstraknya. Seeding dan aklimatisasi dilakukan, masingmasing selama 10 hari. Kemudian dilanjutkan dengan pengolahan anaerobik selama 21 hari. Seeding, aklimatisasi dan pengolahan lindi dilakukan dalam bioreaktor anearobik pada variasi temperatur ambient, temperatur 35°C dan temperatur 45°C, variasi pH: ambient, 7.2 dan 8.0 dan variasi laju alir resirkulasi lindi 0 L/menit, 6L/menit dan 24L/menit. Pengambilan data dan analisis parameter dilakukan setiap dua hari sekali. Proses pengolahan lindi dihentikan jika persentase penurunan COD (CODremoval) telah mencapai 60-80 %. Pada penelitian ini diperolah adanya ketergantungan terhadap konsentrasi substrat (COD) terlarut dalam lindi. Perubahan konsentrasi substrat akan mempengaruhi densitas, viskositas, tekanan biogas, BOD, VFA, laju perpindahan massa fase cair; rkL dan laju difusi zat terlarut; rDL. Oleh karena itu, konsentrasi substrat merupakan gaya dorong pada perpindahan massa fase cair. Kinerja biorekator anaerobik penelitian ini mampu menurunkan COD pada perlakuan pH, Q, T, dan kombinasi pH, Q, T berturut-turut adalah 81.43%, 81.55%, 81.73% dan 85.31%. =============================================================================================== Leachate is liquid waste resulted from physical, biological, and chemical decomposition of waste landfill. Leachate is the heterogeneous liquid waste containing dissolved complex organic and inorganic substrate that is biodegradable and non-biodegradable. Anaerobic treatment, in principle, utilizes anaerobic bacteria to degrade the dissolved organic materials. Mass transfer is an important phenomenon in bioprocess engineering, which cannot be solved completely by theoretical or mathematical methods. This study is to analyze the mass transfer of liquid phase and determine the empirical correlation of mass transfer coefficient of liquid phase in leachate treatment in anaerobic bioreactor. This study was a pilot-scale experiment using batch systems. The mass transfer of liquid phase was analyzed using substrate concentrations expressed as COD. Diffusion of the solute was expressed as VFA. This study used anaerobic bioreactors with a total volume of 160L. After it was performed characterization and analysis of leachate quality, the next was designing anaerobic bioreactor with the design appropriate to the research needs. Then, it was performed leak test and calibration of anaerobic bioreactor system. Seeding and acclimatization was performed respectively 10 days. Further, it was followed by anaerobic treatment for 21 days. Seeding and acclimatization were conducted in anaerobic bioreactor at ambient temperature with pH variations: ambient, 7.2 and 8.0. The ratio of leachate and biogas volume is 70:30. Microorganisms used were from cow’s rumen and leachate with a ratio of 1: 3 then filtered to take the extract. Data collection and parameter analysis were performed once every other day. Leachate treatment process was terminated if the percentage of COD (CODremoval) reduction reached 60-80%. In this study, it is obtained dependence on substrate (COD) concentration dissolved in leachate. Changes in substrate concentration will affect the density, viscosity, biogas pressure, BOD, VFA, liquid phase mass transfer rate; rkL and rate of diffusion of solutes; rDL. Therefore, the substrate concentration is a thrust force in the mass transfer of liquid phase. In this study, anaerobic bioreactor performance is able to decrease the COD at the treatments of pH, Q, T, and the combination of pH, Q, T respectively 81.43%, 81.55%, 81.73% and 85.31%.

Item Type: Thesis (Doctoral)
Uncontrolled Keywords: perpindahan massa, lindi, viskositas, densitas, bioreaktor anaerobik
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculty of Civil Engineering and Planning > Environment Engineering > 25001-(S3) PhD Thesis
Depositing User: Abdul Kahar
Date Deposited: 15 Aug 2017 02:55
Last Modified: 05 Mar 2019 03:44
URI: http://repository.its.ac.id/id/eprint/48561

Actions (login required)

View Item View Item