Astutik, ApriliaDwi (2015) Pemanfaatan Ampas Kopi Sebagai Adsorben Pada Penurunan BOD, dan COD Dalam Limbah Cair Domestik. Sarjana thesis, Universitas Brawijaya.
Abstract
Limbah cair domestik merupakan air limbah yang berasal dari sisa buangan aktivitas rumah tangga, yang meliputi dapur, kamar mandi, MCK, permukiman (real estate), perkantoran, perniagaan, apartemen, asrama dan restaurant. Kotorankotoran tersebut merupakan campuran dari zat-zat bahan mineral dan organik dalam banyak bentuk. Arang aktif merupakan senyawa karbon amorf yang sebagian besar terdiri atas karbon bebas serta memiliki permukaan dalam (internal surface) yang mempunyai luas permukaan antara 300-3500 m2/gram dan hal ini berhubungan dengan struktur pori internal yang menyebabkan arang aktif mempunyai daya serap (adsorben) yang baik. Adsorben adalah padatan berpori yang menghisap (adsorption) dan melepaskan (desorption) suatu fluida. Proses adsorpsi dapat berlangsung jika suatu permukaan padatan dan molekul-molekul gas atau cair dikontakkan dengan molekul-molekul tersebut. Bahan baku yang berasal dari bahan organik dapat dibuat menjadi arang aktif karena bahan baku tersebut mengandung karbon, termasuk ampas kopi. Pada penelitian terdahulu menyebutkan bahwa arang aktif dari ampas kopi mampu menyerap ion besi sampai 99, 43% dan logam merkuri mencapai 99%. Air limbah domestik yang digunakan dalam penelitian ini berasal dari MCK Terpadu Tlogomas. MCK Terpadu Tlogomas ini terletak di Jl. Tirta Rona RT 03 RW 07. Limbah cair dari MCK Terpadu Tlogomas ini yang nantinya akan diturunkan nilai BOD, dan CODnya dengan menggunakan arang aktif. Arang aktif dari ampas kopi yang digunakan telah memenuhi Syarat Mutu Arang Aktif SNI No. 06-3730-1995. Karakteristik arang aktif dari ampas kopi yang meliputi rendemen (12,8%), kadar air (2,3%), kadar abu (1,5%), dan daya serap terhadap iodium (750,61 mg/gr). Penelitian ini menggunakan fungsi eksponensial untuk dapat menentukan dosis optimum dan waktu kontak dalam menurunkan BOD, dan COD limbah cair domestik. Perhitungan penurunan BOD diperoleh dosis optimum adalah pada dosis 30 gram/l, dan waktu kontak 5,7 jam. Penurunan COD optimum pada dosis 30 gram/l, dan pada waktu kontak 5,66 jam. Dosis optimum dan waktu kontak tersebut menunjukkan arang aktif dapat bekerja secara optimum dalam menurunkan BOD, dan COD pada limbah cair domestik di MCK Terpadu Tlogomas
English Abstract
Domestic wastewater is wastewater generated from domestic activities a waste product, which includes a kitchen, bathroom, toilet, settlement (real estate), offices, commercial, apartments, dormitories and restaurant. Dirt is a mixture of mineral substances and organic ingredients in many forms. Activated charcoal is an amorphous carbon compound which is composed largely of carbon-free and has the inner surface (internal surface) which has a surface area of between 300-3500 m2 / g and it is related to the internal pore structure of activated charcoal has led to absorption (adsorbent) the good one. The adsorbent is porous solids that suck (adsorption) and release (desorption) of a fluid. The adsorption process can take place if a solid surface and the molecules of gas or liquid is contacted with the molecules. Raw materials originating from organic material can be made into charcoal as raw material contains carbon, including coffee grounds. In the previous study mentioned that the activated charcoal from coffee grounds is able to absorb iron ions to 99, 43% and 99% metallic mercury. Domestic waste water used in the study came from the MCK Terpadu Tlogomas. MCK Terpadu Tlogomas is located on Jl. Tirta Rona RT 03 RW 07. Wastewater from MCK Terpadu Tlogomas which will be derived value of BOD, and COD using activated charcoal. Activated charcoal from used coffee grounds have met the Active Charcoal Quality Requirements SNI No. 06- 3730-1995. Characteristics of activated charcoal from coffee grounds which include yield (12.8%), moisture content (2.3%), ash (1.5%), and the absorption of iodine (750.61 mg/g). This study uses an exponential function to be able to determine the optimum dosage and contact time in reducing BOD and COD of domestic wastewater. Decrease BOD calculation obtained optimum dose is the dose of 30 gram/l, and the contact time of 5.7 hours. Optimum COD removal at a dose of 30 gram/l, and the contact time of 5.66 hours. The optimum dosage and the contact time showed active charcoal can work optimally in reducing BOD and COD in domestic wastewater in MCK Terpadu Tlogomas.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FTP/2015/114/051503372 |
| Subjects: | 300 Social sciences > 338 Production > 338.1 Agriculture |
| Divisions: | Fakultas Teknologi Pertanian > Keteknikan Pertanian |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 20 May 2015 07:38 |
| Last Modified: | 21 Oct 2021 07:07 |
| URI: | http://repository.ub.ac.id/id/eprint/149996 |
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