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STUDI PENURUNAN KONSENTRASI KROMIUM DAN SENG DALAM LIMBAH CAIR ELEKTROPLATING ARTIFICIAL DENGAN METODA ELEKTROKOAGULASI Christianna, Ryanti; Samudro, Ganjar; Handayani, Dwi Siwi
Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Electrocoagulation is selected method to decrease concentration of heavy metal Cr and Zn, because it is easy in operation without using chemical addition that harmful for human. The purpose of this research studied the influence of efficiency toward the loading of concentration and the performance of electrode during electrocoagulation process used on continuous system. This experiment used three types of artificial wastewater, they were waste 1 contained 30.11 mg/L of Cr, 50.61 mg/L of Zn, 50.14 mg/L of Cu, waste 2 contained 41.08 mg/L Cr, 105.30 mg/L Zn, 103.25 mg/L Cu, and waste 3 contained 50.07 mg/L of Cr, 202.58 mg/L of Zn, 208.61 mg/L of Cu. This experiment used aluminum electrode with dimension of 10 cm x 15 cm, voltage of 12 volt, current strength of 5 ampere, and the operating time was 360 minutes by taking sample every 30 minutes.  There was the washing of electrode every 120 minutes to increase the performance of electrode. Based on the research had been obtained the optimum time at each sample was 120 minutes which research up to 97% of efficiency and the optimum time of using electrode was 240 minutes. The best reduction of Zn reached 97.68% with the initial concentration of 50.61mg/L.
STUDI PENURUNAN PARAMETER TSS DAN TURBIDITY DALAM AIR LIMBAH DOMESTIK ARTIFISIAL MENGGUNAKAN KOMBINASI VERTICAL ROUGHING FILTER DAN HORIZONTAL ROUGHING FILTER Tyas Fitri, Imaning; Samudro, Ganjar; Sumiyati, Sri
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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This study used a combination of vertical roughing filter (VRF) and horizontal roughing filter (HRF) to reduce the content of Total Suspended Solid (TSS) and Turbidity in domestic wastewater. Variations study was only performed on the reactor VRF. Variations used of waste water discharge Q1 = 0.2778 l/hr, Q2 = 0.1389 l/hr, and Q3 = 0.0926 l/hr; and types of media used is charcoal and gravel with coarse size (ø?20-10 mm), medium (?15-6 mm), and fine (?10-3 mm). Optimum conditions in the reactor decreased TSS and turbidity at small flow rate or Q3 = 0.0926 l/hr, with a charcoal filter media type, the size of the fine filter media (?10-3 mm), with an efficiency of 98,58% and 99,71%.
STUDI PENURUNAN KROMIUM DAN NIKEL DALAM PENGOLAHAN LIMBAH CAIR ELEKTROPLATING DENGAN METODE ELEKTROKOAGULASI Retna Prihartanti, Wenny Dwi; Samudro, Ganjar; Junaidi, Junaidi
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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ABSTRACTEnvironmental pollution that caused by electroplating waste disposal into the environment can cause harmful effects for human life. Before it is discharged into the environment need the method to treatment this waste. Electro coagulation is one of the wastewater treatment methods which are interchangeable to treat the electroplating industrial waste. This electroplating waste contain heavy metals such as chromium (Cr), Nickel (Ni) and Copper (Cu). Electro coagulation experiments have been conducted with the independent variable which are the type of plate alumunium (Al) and Iron (Fe), and also Current density 40 mA/cm2, 50 mA/cm2, 60 mA/cm2 and 70 mA/cm2. This study uses a powerful current 5 Amperes, time operation 120 minutes, with the sampling time every 15 minutes, number of plate 4 pieces, 2 cm distance between electrodes. Based on experiments have been conducted that obtained best results at the highest current density removal efficiency of chromium allowance  99,60 % for using iron electrodes. Whereas for nickel removal, the best results at the highest current density removal efficiency of nickel allowance  96,20 % for using alumunium electrodes. Other measurements in this study that may affect the process of electro coagulation include pH, temperature, TSS, TDS and turbidity.
STUDI PENURUNAN PARAMETER BOD, COD DAN BOD/COD MENGGUNAKAN GABUNGAN VERTICAL ROUGHING FILTER DAN HORIZONTAL ROUGHING FILTER PADA LIMBAH CAIR DOMESTIK ARTIFICIAL Resti Utami, Flora; Samudro, Ganjar; Sumiyati, Sri
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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ABSTRACTDomestic wastewater treatment is necessary given the high levels of pollutants such as BOD and COD content. In Indonesia there have been domestic wastewater treatment technology but the application is not yet efficient enough, India and African implement a technology that is roughing filter water treatment using filtration mechanism. This study aims to determine the reduction in BOD, COD and BOD / COD using a combination of vertical roughing filters (VRF) and horizontal roughing filter (HRF) in domestic wastewater. This study uses VRF and HRF series of three variations of flow of 277.7 ml/h, 138.8 ml/h and 92.5 ml/h, three variations of the filter media size, coarse with diametres ?20mm, ?15mm, ?10mm , medium size ?15mm, ?10mm, ?6mm and fine size ?10mm, ? 6mm, ?3mm and two variations of types filter media are gravel and charcoal. From research result obtained a removal parameters of BOD and COD optimum flow variation are 277.7 ml/h for the BOD by 90% eficiency and the variation of flow 138.8 ml/h for removals parameters COD by eficiency 99 %. Variations of filter media types for the removal parameters BOD and COD is gravel, while the optimum filter media size for the parameters BOD is coarse and optimum filter media size for COD is medium.
STUDI PENURUNAN KANDUNGAN TOTAL COLIFORM DENGAN MENGGUNAKAN KOMBINASI VERTICAL FLOW ROUGHING FILTER (VRF) DAN HORIZONTAL FLOW ROUGHING FILTER (HRF) PADA AIR BUANGAN DOMESTIK ARTIFISIAL Suryanti, Irma; Samudro, Ganjar; Sumiyati, Sri
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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ABSTRACTThis research is aims to reduce the content of total coliform bacteria in domestic wastewater using a combination of vertical flow roughing filter (VRF) and horizontal flow roughing filter (HRF) for each variation of flow rate, the type and the size of filter media. Domestic wastewater influent is used as an artificial wastewater containing total coliform bacteria sample 2400 MPN/100 ml. The results of the best drop reaches 0 MPN/100 ml sample contained in VRF combination with medium-sized fine charcoal filter (10 mm,6mm and 3mm) on the flow rate 0.0926 liters/hour.Variations in discharge and the size of filter media for total coliform bacteria indicates a decrease inversely proportional relationship, where the smaller size of the discharge and the filter media decreased total coliform bacteria. As for the type of filter media, charcoal filter media types work better than gravel to reduce the content of total coliform bacteria.
STUDI PENURUNAN KONSENTRASI NIKEL DAN TEMBAGA PADA LIMBAH CAIR ELEKTROPLATING DENGAN METODE ELEKTROKOAGULASI Nofitasari, Rachmanita; Samudro, Ganjar; Junaidi, Junaidi
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract Electroplating industrial wastewater containing heavy metals that are harmful so that need treatment in order to minimize impact on the environment. Most industries treat their wastewater by coagulation - flocculation. It is easy in the processing but the cost and the resulting large amount of mud, especially in metal-based industries. The experiments were conducted in batches of 1 liter for 120 minutes, direct current of 5 A and a voltage of 3 V at current densities of 40, 50, 60, and 70 mA/cm2 and type electrode Aluminum and Iron. From the experimental values obtained electrocoagulation efficiency is 95% Ni and Cu were 98% in current density 70mA/cm. Comparison between electrocoagulation and coagulation do to get a new alternative technology in electroplating wastewater treatment. In terms of cost and processing electrocoagulation technique has many advantages than coagulation. Therefore the best treatment alternative selection is electrocoagulation
STUDI PENURUNAN BESI (FE) DAN MANGAN (MN) DALAM AIR TANAH DENGAN MENGGUNAKAN CLAY FILTER Amri, Khairul; Samudro, Ganjar; Wisnu Wardhana, Irawan
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 DOSIS RAGI DAN BEBAN ORGANIK TERHADAP KINERJA DCMFCs DAN GAC-DCMFCs DALAM PRODUKSI LISTRIK DAN EFISIENSI PENURUNAN COD Samudro, Ganjar; Sumiyati, Sri; Ramadan, Bimastyaji S.; Iradati, Lintang
Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Vol 1, No 1 (2015): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 6 2015
Publisher : Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik

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Penelitian skala laboratorium ini dilakukan untuk menganalisis perbandingan kinerja DCMFCs dan GAC-DCMFCs dalam produksi listrik dan efisiensi penurunan COD yang dipengaruhi oleh dosis ragi dan perbedaan beban organik. DCMFCs disusun dengan dua kompartemen anoda dan katoda yang masing-masing dihubungkan dengan jembatan garam yang telah dipreparasi larutan 1 M NaCl, sedangkan GAC-DCMFCs disusun dengan penambahan media GAC pada ruang anoda. Kompartemen anoda dikondisikan anaerob dan katoda diisi larutan elektrolit 0,15 M KMNO4, yang dibuat dari plastik dengan volume kerja 600 mL. Dosis ragi divariasikan (1,5; 3; 4,5) g/L. Beban organik divariasikan (0,4; 0,8; 1,2) mg/menit. Rancangan penelitian dibuat secara paralel dengan total sebanyak 18 reaktor dengan pengambilan sampel duplikat. Hasil penelitian didapatkan bahwa dosis ragi 3 g/L dan beban organik 0,8 mg/menit pada kondisi optimum, total kinerja produksi listrik diatas 185 mW/m2 dan efisiensi penurunan COD diatas 90%  lebih tinggi pada DCMFCs dibandingkan GAC-DCMFCs. Media GAC dalam chamber anoda DCMFCs yang dipengaruhi oleh adanya ragi dapat meningkatkan efisiensi penurunan COD dan nilai resistensi terhadap transfer elektron. Kata kunci: COD, DCMFCs, GAC-DCMFCs, listrik, ragi
KAJIAN PENENTUAN METODE PENGOLAHAN SAMPAH BERDASARKAN TIMBULAN, KOMPOSISI, DAN KARAKTERISTIK SAMPAH DI UNIVERSITAS DIPONEGORO (STUDI KASUS: FSM, FIB, DAN D3 TEKNIK) Christina R.M, Etika; Cyntia, Cyntia; Samudro, Ganjar; Handayani, Dwi Siwi
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2016): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 7 2016
Publisher : Prosiding SNST Fakultas Teknik

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Jumlah timbulan sampah di FSM, FIB dan D3 Teknik mencapai 0,08 kg/orang/hari dengan sumber sampah gedung, taman/jalan, dan kantin. Jumlah sampah yang dapat digunakan sebagai bahan untuk pengomposan dan briket bioarang adalah FSM 944,61 L, FIB 127,06 L, dan D3 Teknik 101,07 L. Hasil uji karakteristik sampah didapatkan nilai kadar air FSM 36,6% FIB 28,79 % dan D3 Teknik 50,58 % . Nilai kadar abu FSM 10,5% , FIB 4,35%, dan D3 Teknik 4,09%. Rasio C/N untuk FSM  27,45 : 1, FIB 30,7 : 1 dan D3 Teknik 30,4 :1. Kadar kalori dari sampah FSM 4.089 kkal/kg, FIB 4.274 kkal/kg, dan D3 Teknik 3.743 kkal/kg. Rumus empiris sampah organik (sisa makanan dan daun) di FSM C222H477O221N7S, FIB C242H513O237N7S, dan D3 Teknik C210H446O206N6S. Pada penelitian ini berdasarkan hasil timbulan, komposisi, dan karakteristik sampah yang dihitung di FSM, FIB dan D3 Teknik , kemudian dihubungkan dengan standar karakteristik sampah dari berbagai referensi didapatkan hubungan timbulan, komposisi dan karakteristik sampah terhadap metode pengolahan secara anaerobic digestion, pengomposan, briket bioarang, insenerasi dan recycle.   Kata kunci: analisis karakteristik, pengolahan, kompos, sampah, timbulan.
KONSERVASI ENERGI BERBASIS RENEWABLE ENERGY TECHNOLOGY DENGAN PEMANFAATAN TEKNOLOGI MICROBIAL Samudro, Ganjar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 13, No 2 (2016): September 2016
Publisher : Departemen Teknik Lingkungan

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Abstract

Penggunaan energi yang besar meningkatkan emisi CO2 yang terlepas ke atmosfer. Upaya konservasi energi terus dilakukan dalam rangka meningkatkan kebutuhan energi. Bentuk konservasi energi berbasis renewable energy technology dengan pemanfaatan teknologi microbial merupakan bentuk ideal back to nature dan lebih ramah lingkungan untuk masa depan lingkungan yang lebih baik. Penelitian-penelitian berbasis teknologi microbial dengan basis modifikasi teknologi konvensional dengan advanced menjadi pilihan terbaik dalam capture energi besar, kebutuhan energi nol, revenue listrik tinggi dan biaya operasional yang rendah. Pilihan inovasi teknologi ini membuka wacana pengembangan inovasi teknologi microbial lainnya dan memberikan kontribusi pengurangan emisi CO2 dari suatu proses. Hasilhasil penelitian terbaru dengan reaktor MFCs sebagai salah satu teknologi microbial didapatkan kecenderungan positif dalampemanfaatannya dalam skala yang lebih besar dan aplikatif.