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PENURUNAN KANDUNGAN PHOSPHAT PADA LIMBAH CAIR INDUSTRI PENCUCIAN PAKAIAN (LAUNDRY) MENGGUNAKAN KARBON AKTIF DARI SAMPAH PLASTIK DENGAN METODE BATCH DAN KONTINYU (Studi Kasus : Limbah Cair Industri Laundry Lumintu Tembalang, Semarang) Wisnu Wardhana, Irawan; Siwi Handayani, Dwi; Ika Rahmawati, Dessy
TEKNIK Volume 30, Nomor 2, Tahun 2009
Publisher : Diponegoro University

Increasing the number of laundry industry influences on the increasing of detergent utilizzation. Thedominant substance contained in the detergent is Natrium Tripolyphosphat, a builder and surfactant.Therefore the waste contains Phosphate. Most of the laundry industry throw their waste without treatmentfirst. The waste would cause Eutrofication where the water body became rich of dissolved nutrient,descending of the dissolved oxygen and capability of water body assist power to water biota. Lumintu isone of the laundry industries which located in Tembalang district. According to the result of preexperiment,industrial waste water containes 10,21 mg/l phosphate. This value exceeds standard quality ofPerda Prov. Jateng no. 10 year 2004 about maximum value for total of phosphate is 2 mg/l. One ofwastewater treatment method is adsorption using the active carbon from plastic rubbish kind ofPolyethylene. This reseach purposes to know the capability of active carbon from plastic rubbish inreducing phosphate content with batch and column operation. The batch operation use 1,2 and 3 gramvariation weight active carbon from plastic rubbish for 30 - 60 mesh and 100 - 200 mesh variation mediasize. The batch operation has 45,45 % from the highest phosphate efficiency lowering on the 3 gram.Otherwise, column operation need 1 inch column diameter with 50 ml/minute and 100 ml/minute debitvariation. Continue trial had 54,75 % from the highest phosphate efficiency lowering on the 50 ml/minute.Constant value speed (k1) is 0,0108 ml/mg.s with capacity of adsorption (qo) 0,677 mg/g.

PENGARUH PENGENCERAN DAN PENGADUKAN LIMBAH INDUSTRI IKAN NILA TERHADAP PENINGKATAN PRODUKSI BIOGAS DENGAN MENGGUNAKAN RUMEN SAPI SEBAGAI STARTER Muhammad Fachri Maulana; Sudarno Sudarno; Irawan Wisnu Wardhana
Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Tilapia fish industry solid waste is resulting from the process of weeding, washing, and preparation. Tilapia fish industry solid waste has a high content of organic material. This would give to environmental issues when waste disposed into the environment. Therefore, an alternative processing by converting solid waste into biogas from Tilapia fish industry solid waste with anaerobic process. This research aims to enhancement of biogas production from Tilapia fish industry solid waste by using a rumen as a starter. The treatment was by dilution and stirring intencity in a samples with crushed and without crushed. This research is an experimental-laboratoris, where research is done in a scale laboratory. Methods used to research is a batch reactor using in anaërobic fermentation process. The results of this research show that Fish tilapia industry solid waste can generate biogas after rumen fluid with anaerobic processes continuously until 20 days. On the variable of the total volume production results in dilution of wastewater occur at the highest addition of water 150 ml with the treatment without chrushed i.e. 816 ml. On the variable total production volume result of stirring biogas high occur in stirring 3 x 150 ml with the dilution of the treatment without chrushed i.e. 1057 ml. On these variables was determine the influence measurement of chemical oxygen demand (COD) allowance against the production of biogas produced. The efficiency removal of COD occur at the highest stage without stirring sample A 100 ml a dilution that is 91%. The whole pH measurements on a variable decrease from the initial pH values 7 to pH 5.

STUDI PENURUNAN BESI (Fe) DAN MANGAN (Mn) DALAM AIR TANAH DENGAN MENGGUNAKAN CLAY FILTER Khairul Amri; Ganjar Samudro; Irawan Wisnu Wardhana
Jurnal Teknik Lingkungan Vol 2, No 4 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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The use of groundwater as a source of fresh water to the people would become a problem when it contains of Fe and Mn. This happens because in the ground water there is no directly contact with the air outside and the weathering of rocks, so that Fe and Mn in the ground water is still soluble. Meanwhile the amount of Fe and Mn in the ground is never the same in every location. This case could be some impacts to people’s kidney health. In this study, content of Fe and Mn in the ground water will be reduced by using Clay filter media. This study uses 3 wells water samples character with different level of Fe and Mn in sample A is 0.001 mg / l Fe, 0.16 mg / l Mn, sample is B 0.019 mg / l Fe, 0.05 mg / l Mn, and sample C is 3,242 mg / l Fe, 0.27 mg / l Mn. The height level of water influence to the Clay filter becomes the consideration in this study, they are 50 cm, 100 cm and 150 cm. Clay Filter is operated for 12 hours continuously with taking the reuslt of filtration sampling per 2 hours. Based on the research, this study finds the operating time to decrease the concentration of Fe and Mn with Clay Filter optimally from the three height levels in all kinds of different water samples and its categorization has reached 100% at the fourth hours.

PENGARUH PENGENCERAN DAN PENGADUKAN LIMBAH DAPUR DAERAH BULUSAN (STUDI KASUS RASIO C/N 17 : 1) TERHADAP PENINGKATAN PRODUKSI BIOGAS DENGAN MENGGUNAKAN EKSTRAK RUMEN SAPI SEBAGAI STARTER Pradana Sahid Akbar; Irawan Wisnu Wardhana; Sudarno Sudarno
Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Soaring oil prices affect economic activity in the world, including Indonesia, it would encourage the government to develop renewable energy including biogas. Kitchen wastes has the potential to be a source of renewable energy, namely biogas. Waste food scraps and kitchen activities in sufficient quantities of the restaurants in the area were collected Bulusan, was treated like refinement and homogenization, the extract phase and its substrates include cattle as a source of rumen anaerobic bacteria into the reactor with the addition of water and stirring as a variation. From the results it is concluded, that the addition of water and stirring affect the amount of gas produced. It is known that waste as much as 150 ml of water is added, is able to produce more gas volume than others. In the study indicated a decrease and an increase in gas production. This is due to the formation of gas phase occurs, starting from the stage of hydrolysis, acidogenesis, acetogenesis, and methanogenesis.

PENGARUH PENGENCERAN DAN PENGADUKAN TERHADAP PRODUKSI BIOGAS PADALIMBAH INDUSTRI KECIL PENGASAPAN IKAN DENGAN MENGGUNAKAN EKSTRAK RUMEN SAPI SEBAGAI STARTER Pranata Anggakara; Sudarno Sudarno; Irawan Wisnu Wardhana
Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Fish waste is a problem arising from the activities of the fishing industry. In General, fish waste containing organic compounds are high, therefore, sewage treatment needs to be done to minimize waste. One of the technology for processing waste, namely by means of the creation of biogas by anaerobic. The advantage of this treatment is to produce a little mud than reprocessing in aerobics. This research aims to analyze the influence of addition of rumen of biogas production, the influence of dilution of biogas production and biogas production influence of stirring. This research was conducted in laboratory scale by using a typical analysis for digester capacity 500 mL. The sample used is a waste of the Stingray fish smoking industry, using a sample of mashed and not mashed as well as extracts of bovine rumen as a starter. Water used for dilution in the study is well water with salinity levels of 7.6 ppt. on variable dilution, yield the most high biogas contained on the dilution of 37.5 mL. For the addition of rumen biogas results higher than without the rumen. Stirring 3 times more effective for producing biogas is higher compared to without stirring and stirring 1 time.

PENGARUH PENGENCERAN DAN PENGADUKAN LIMBAH DAPUR DAERAH NGESREP TERHADAP PENINGKATAN PRODUKSI BIOGAS DENGAN MENGGUNAKAN EKSTRAK RUMEN SAPI SEBAGAI STARTER Mohammad Rama Fadillah Soeroso; Sudarno Sudarno; Irawan Wisnu Wardhana
Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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The increase of oil prices affects economic activity in the world including Indonesia, it would encourage the government to develop renewable energy including biogas. Kitchen wastes have the potential to be a source of renewable energy, namely biogas. Food waste and kitchen activities in sufficient quantities from the cafeteria collected, and treated such as refining and homogenizing, then enter a stage of the substrate and its extracts as a source of rumen anaerobic bacteria into the batch reactor with the addition of water as a variation. From the results of the study concluded that the addition of water affects the amount of gas produced. It is proven through the reactor which produces biogas most is reactor with 150 ml dilution (A) (pieces shape) which were stirred three times a day, this reactor is capable of producing up to 1394 ml within 24 days. Based on the time of production, the level of water and mixing also affects the length of time in the production of biogas. Biogas production without a stirring process is capable of producing biogas up to 19-20 days, while the stirred reactor were capable of producing biogas up to 25-26 days.

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