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KONSENTRASI LOGAM BERAT DI PERAIRAN, SEDIMEN DAN BIOTA DENGAN FAKTOR BIOKONSENTRASINYA DI PERAIRAN BATU BELUBANG, KAB. BANGKA TENGAH Wahyuni, Hasti; Sasongko, Setia Budi; Sasongko, Dwi P
METANA Vol 9, No 02 (2013): Desember 2013
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (313.266 KB) | DOI: 10.14710/metana.v9i02.7612

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Abstract   The reduction of land that used for land-based mining caused the shift of mining from land-based mining to off-shore mining, that used to namedFloating Inkonvensional Mining. This type of mining caused waters quality degradation.This research aimed to analyze Pb, Cd, and Zn content in water, sediment, and biota so that the value of the bio-accumulation factor can beanalyzed.The locations determination was conducted by using purposive random sampling method and the implementation was using GPS Garmin 60 in June 2013. The sea water sampling was using the water sampler, the sediment sampling was using paralon pipe, the plankton sampling was using the plankton-net, the shellfishes sample was collected from the fishermen, and the chavies and squids sample was got from Baganin the waters of Pulau Panjang.The analysis of the metal in water and sediment was refer to the prosedur standard method (APHA, 2005), while the analysis of the heavy metal in the planktons and the tissue of the biota was refer to SNI 2354.5:2011. The content of metal was compared with the quality standard that have been determined.The Cd and Zn content in water was under the sea water quality standard for sea biota. The Pb in the waters have been exceeded the quality standard that have been determined in Kepmen LH no. 51 Tahun 2004.The Pb, Cd, and Zn content in sediment was  lower and far away from the quality sandard that have been determined by Norwegia and Irlandia. The heavy metal content in Anadara granosa, Stolephorus, sp, and Loligo chinensis, gray which were got chaught in the waters of Batu Belubang was lower thanthe national quality standard (SNI 2731.1:2010). The value of bio-concentration factor (BCFs-w) showed that the highest ability of sediment to accumulate Pb was existed in station number 2, i.e. 10,037 l/kg. The value of bio-concentration factor (BCFo-s) showed the plankton ability to accumulate Pb in sediment (1,26) was higher than its ability to accumulate Zn in sediment (1,22), while its ability to accumulate metal in water (BCFo-w) was as high as 8,275 in station number 2. The value of bio-concentration factor (BCFo-s) showed that the shellfish, chavies, and squid ability in accumulating metal in sediment was as high as 0,713; 0,564 and 0,703. The value of bio-accumulation of shellfish in sediment was higher because sediment was the habitat of shellfish.Floating Inkonvensional Mininghave contribution in spreading heavy metal, that was contained in the soil, to the waters. This condition needs supervision to control TI Apung growth in this location so that does not pollute the waters. Kata kunci : Lead(Pb), Cadmium (Cd), Zink (Zn), Water, Sediment,Plankton, Shellfish, Chavies,Squid, Batu Belubang, Floating Inkonvensional Mining, Bio-concentration Factor (BCF).  
PENGEMBANGAN PIRANTI LUNAK SISTEM PROSES BERSIFAT USER FRIENDLY DENGAN SCILAB (Open Source Software) Sasongko, Setia Budi
METANA Vol 5, No 2 (2007): Desember 2007
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5655.258 KB) | DOI: 10.14710/metana.v5i2.1904

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Abstract Requirement of software is necessary for the process system-computer simulation. ln reality, costly of software is one of restriction for the software development. However, the costly constraint can be solved using open source software such as Scilab and OpenOffice. The goa lof this article formulates user friendly program of the process system. Scilab program by Graphical User Interface (GUI) and interaction with Open Office-Cale for the data-base physical property. Scilab program has been listed in this article and algorithme of rhe program as the methodology has been presented in this article. Results of the simulation program indicate goodfinding for the process system.   Kata kunci : scilab; open office, simulasi komputer; oss (open source sortuare), Antar Muka Pcngguna - Graphical User Interface (GUI).
Kinetic Study on Ultrasound Assisted Biodiesel Production from Waste Cooking Oil Widayat, Widayat; Hadiyanto, H; Sasongko, Setia Budi
Journal of Engineering and Technological Sciences Vol 47, No 4 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (212.602 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.4.3

Abstract

The objective of this research was to study  a kinetic model of biodiesel production from waste cooking oil assisted by ultrasound power. The model considered the biodiesel production process as a 2nd order reversible reaction, while its kinetic parameters were estimated using MATLAB, based on data extracted from Hingu, et al. [1]. The data represented experiments under low-frequency ultrasonic wave (20 kHz) and variations of temperature, power, catalyst concentration, and alcohol-oil molar ratio. Statistical analysis showed that the proposed model fits well to the experimental data with a determination coefficient (R2) higher than 0.9.
ANALISIS KUALITAS AIR DAN STRATEGI PENGENDALIAN PENCEMARAN AIR SUNGAI BLUKAR KABUPATEN KENDAL Samudro, Sudarno; Agustiningsih, Dyah; Sasongko, Setia Budi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 9, No 2 (2012): Vol 9, No 2 (2012)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.895 KB) | DOI: 10.14710/presipitasi.v9i2.64-71

Abstract

Sungai Blukar yang merupakan Sungai Utama di DAS Blukar, yang berfungsi sebagai tempat pengaliran air kondisinya tidak dapat dipisahkan dari aktivitas manusia di Daerah Aliran Sungai. Kondisi Sungai Blukar saat ini diperkirakan telah mengalami penurunan kualitas air disebabkan berbagai aktivitas manusia yang berada di daerah tangkapan airnya. Penelitian ini bertujuan untuk menganalisis kualitas air Sungai Blukar berdasarkan baku mutu kualitas air sungai menurut PP Nomor 82 Tahun 2001 dan merumuskan prioritas strategi pengendalian pencemaran air sungai yang perlu dilakukan. Sungai sebagai daerah penelitian ditetapkan sepanjang 18,70 km. Kualitas air sungai diukur dan diamati pada 7 titik pengambilan sampel. Analisis kualitas air dilakukan dengan menggunakan metode indeks pencemaran. Analisis prioritas strategi pengendalian pencemaran air dengan AHP. Hasilnya adalah (1) parameter BOD di titik 3,4,5,6 dan 7 serta parameter COD di titik 7 telah melebihi baku mutu air sungai Kelas II menurut PP nomor 82 Tahun 2001. ( 2) Telah terjadi penurunan kualitas air Blukar dari hulu ke hilir yang ditandai dengan nilai indeks pencemaran yang cenderung semakin meningkat berdasarkan kriteria sungai Kelas II menurut PP nomor 82 Tahun 2001. Nilai indeks pencemaran berkisar antara 0,49 sampai 3,28. Status mutu air sungai Blukar telah tercemar dengan status cemar ringan. (2) untuk menjaga kualitas air pada kondisi alamiahnya diperlukan strategi pengendalian pencemaran air sungai yang difokuskan pada  (a) peningkatan peran masyarakat baik masyarakat umum, petani maupun industri dalam upaya pengendalian pencemaran air. (b) peningkatan koordinasi antar instansi yang berkaitan dengan pengendalian pencemaran air, serta (c) mengintegrasikan kebijakan pengendalian pencemaran air dalam penataan ruang.
PULAU BAHANG KOTA (URBAN HEAT ISLAND) DI KOTA YOGYAKARTA DAN DAERAH SEKITARNYA HASIL INTERPRETASI CITRA LANDSAT OLITIRS TAHUN 2013 Wicahyani, Suksesi; Sasongko, Setia Budi; Izzati, Munifatul
Jurnal Geografi Vol 11, No 2 (2014): July 2014
Publisher : Jurnal Geografi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Urban heat island is a phenomenon that urban have higher temperature thansurrounding area. Factors that influence the temperature consist of factors thatcan be controlled by humans, including the city design and structure, totalpopulation , and factors that can not be handled by human, like season, cloudcover, and atmospheric dynamics (Rizwan et al., 2008). The purposes of thestudy were to determine urban heat island in Yogyakarta and its surroundingarea, temperature range, and the role of land cover to the temperature. Urbanheat island type that identified in this study was surface urban heat island. Theheat island was obtained from interpretation of Landsat Imagery catched onSeptember 12, 2013. This image were used to determine the type of land coverbeside temperature. Heat island occurred at Yogyakarta and surrounding area.The heat focused in Yogyakarta City and extended to the north-east of the city.Range the temperature were 5 up to 10°C. Land cover associated with the lowtemperature was vegetation while the land cover associated with hightemperature was building area.
PENGAMBILAN MINYAK KEDELAI DARI AMPAS TAHU SEBAGAI BAHAN BAKU PEMBUATAN BIODIESEL Buchori, Luqman; Sasongko, Setia Budi; Anggoro, Didi Dwi; Aryanti, Nita
Jurnal Ilmu Lingkungan Vol 10, No 2 (2012): Oktober 2012
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.317 KB) | DOI: 10.14710/jil.10.2.49-53

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ABSTRAK Kedelai adalah komoditi terbesar setelah padi di Indonesia. Kebutuhannya mencapai 2,3 juta ton per tahun. Dari jumlah tersebut 50% dikonsumsi berupa tempe, 40% berupa tahu, dan 10% berupa minyak kedelai. Dari produksi tahu, dihasilkan limbah ampas tahu. Dalam penelitian ini, lemak pada ampas tahu diekstraksi untuk mendapatkan minyak kedelai yang dijadikan bahan baku biodiesel. Hasil ekstraksi kemudian dianalisa untuk dibandingkan dengan standar bahan baku biodiesel. Penelitian ini bertujuan untuk menghitung berat lemak yang terekstrak dari ampas tahu terhadap lama waktu ekstraksi dan jenis solven yang digunakan, serta mengetahui komposisi minyak ampas tahu tersebut. Hasil penelitian menunjukan bahwa waktu ekstraksi dan jenis solven mempengaruhi jumlah lemak yang dapat terekstrak. Benzene merupakan solven yang dapat mengekstrak minyak lebih baik daripada solven toluene dan n-heksane. Solven benzene memiliki waktu optimum lima jam untuk mengekstrak lemak yang terdapat di dalam ampas tahu. Dari hasil analisa, diketahui bahwa kadar FFA minyak kedelai yang menggunakan solven benzene sebesar 4,8%, lebih kecil daripada menggunakan solven toluene (5,4%) dan n-heksan (5,8%). Sedangkan bilangan penyabunan diperoleh 184,22 mgKOH/gr untuk benzene, 193,55 mgKOH/gr untuk toluene dan 184,22 mgKOH/gr untuk n-heksan. Kandungan posfor yang didapat sebesar 0,19 untuk benzene, 0,23 untuk toluene dan 0,12% untuk n-heksan. Nilai ini masih dalam kategori besar sehingga harus melewati pretreatment terlebih dahulu sebelum melewati proses transesterifikasi menjadi biodiesel. Kata Kunci: ampas tahu; biodiesel; kedelai; minyak kedelai; transesterifikasi ABSTRACT Soybeans are the largest commodity after rice in Indonesia. Needs to reach 2.3 million tons per year. Of this amount 50% is consumed in the form of tempeh, 40% in the form of knowing, and 10% of soybean oil. From tofu production, tofu waste generated. In this study, fat on tofu extracted for soybean oil used as biodiesel feedstock. The results are then analyzed for compared to standard biodiesel feedstock. This study aimed to calculate the weight of fat extracted from the tofu waste to extraction time and the type of solvent and determines the composition of the oil tofu. The results showed that the extraction time and the type of solvent affects the amount of fat that can be extracted. Benzene is a solvent that can extract oil better than the solvents toluene and n-hexane. Benzene had five hours optimum to extract the fat in the tofu. From the analysis, it is known that the FFA content of soybean oil using benzene was 4.8%, smaller than toluene (5.4%) and n-heksane (5.8%). While these numbers obtained by saponification 184.22 mgKOH/gr for benzene, 193.55 mgKOH/gr for toluene and 184.22 mgKOH/gr for n-heksane. The content of phosphorus of 0.19 for benzene, 0.23 for toluene and 0.12% for n-heksane. This value is still in the major categories that must be passed before pretreatment process trough transesterification into biodiesel. Keywords: tofu waste; biodiesel; soybean; soybean oil; transesterification
KAJIAN DAMPAK LINGKUNGAN PENERAPAN TEKNOLOGI BIOFLOK PADA KEGIATAN BUDIDAYA UDANG VANAME DENGAN METODE LIFE CYCLE ASSESSMENT Ma'in, M; Anggoro, Sutrisno; Sasongko, Setia Budi
Jurnal Ilmu Lingkungan Vol 11, No 2 (2013): Oktober 2013
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (727.655 KB) | DOI: 10.14710/jil.11.2.110-119

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ABSTRAKPenerapan teknologi bioflok pada kegiatan budidaya vaname perlu dievaluasi, terkaitpenggunaan sumberdaya alam dan energi listrik yang berpotensi mengakibatkan dampaklingkungan disertai biaya investasi yang tinggi. Tujuan penelitian ini adalah menganalisisdampak lingkungan dan menentukan strategi pengelolaan budidaya udang berbasis teknologibioflok. Penelitian ini merupakan penelitian deskriptif kuantitatif dengan menggunakanmetode penaksiran daur hidup. Kajian dibatasi pada kegiatan pembesaran di tambak “cradleto farm gate”, unit yang digunakan adalah produksi 1 ton udang vaname. Hasil penelitian inimenunjukkan teknologi bioflok mampu meningkatkan produksi per satuan luas lahan yangdigunakan dengan ukuran panen ± 16,4 gr/ekor, nilai FCR 1,3, SR 86 - 92%, dan SGR 15,6%.Produksi per ton udang vaname menghasilkan dampak: acidification (Acd); 63.39 ± 15.37 kgSO2eq, eutrophication (Eut); 14.10 ± 3.28 kg PO4eq, ; global warming potential (GWP); 7336.77± 1,46 kg CO2eq, ; dan cumulative energy use (CEU) sebesar 101,64 ± 18.84 GJ. Strategipengelolaan perlu dilakukan dengan perbaikan manajemen pemberian pakan berbasis kualitasair, pengurangan konsumsi energi listrik, menerapkan panen bertahap dan menambahkankolam pengolahan limbah.Kata Kunci : kajian, lingkungan, bioflok, budidaya udang,
TATUS TROFIK WADUK MANGGAR KOTA BALIKPAPAN DAN STRATEGI PENGELOLAANNYA Samudro, Sudarno; Sasongko, Setia Budi; Susanti, Ira Tri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 9, No 2 (2012): Vol 9, No 2 (2012)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.967 KB) | DOI: 10.14710/presipitasi.v9i2.72-78

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Kondisi air waduk Manggar yang merupakan sumber air baku bagi Kota Balikpapan hingga tahun 2009  dalam keadaan eutrofik sedang. Salvinia molesta yang merupakan gulma yang hidupnya mengambang di air, mengindikasikan kondisi perairan waduk Manggar yang eutrofik. Adanya aktivitas masyarakat disekitar waduk dan permasalahan di dalam waduk sendiri yaitu akasia yang terendam dan tumbuhan air salvinia sp, mempengaruhi kualitas air waduk sebagai air baku. Penelitian ini bertujuan untuk: Menganalisa tingkat trofik waduk Manggar dan menentukan strategi dalam pengelolaan waduk. Metode penelitian yang digunakan dalam penentuan status trofik dengan pengambilan sample pada 3 (tiga) lokasi yang dianggap mampu memberi gambaran tentang kondisi waduk Manggar dilihat dari kandungan Nitrogen, Phospat dan Khlorofil a. Hasil penelitian dengan menggunakan perhitungan Indeks Kesuburan (Tropik Status Index/TSI) Carlson’s dan menggunakan tabel TSI Carlson’s  memperlihatkan bahwa waduk masuk dalam kategori mesotrophik dan eutrophik ringan yang artinya perairan tersebut telah mengalami penyuburan. Penentuan strategi dalam pengelolaan waduk melalui wawancara mendalam dengan para ahli dan dengan menggunakan metode AHP.  didapatkan beberapa kriteria yang memiliki bobot penting dalam pengelolaan serta strategi dalam pengelolaan waduk Manggar.
STUDI PENGARUH BAHAN PENUTUP ATAP TERHADAP KONDISI TERMAL PADA RUANG ATAP Rahmat, Amat; Prianto, Eddy; Sasongko, Setia Budi
Jurnal Arsitektur ARCADE Vol 1, No 1 (2017): Jurnal Arsitektur ARCADE Juli 2017
Publisher : Prodi Arsitektur UNIVERSITAS KEBANGSAAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (890.136 KB) | DOI: 10.31848/arcade.v1i1.12

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Abstract:. The uncomfortable thermal conditions in the building are complained of by the inhabitants due to the inappropriate selection of roofing materials, thus making the building unable to achieve the expected thermal conditions. Selection of appropriate roofing material will help in air cooling process and minimize energy use for cooling space. This study was conducted to determine the thermal conditions of roof space generated from various types of roofing materials that have been determined. The study object of this study is the roof space in residential buildings with a saddle roof shape with a slope of 30O roof angle. Roofing material is tile, asbestos and zinc. The results data show that the average thermal spaces of roof space on tile roofs are 1.91OC-2.31OC lower than the asbestos roof and zinc. Roof tile is also more able to withstand the sun's heat radiation. The average surface tile roof temperature is 0.28˚C lower than the surface temperature of the asbestos roof and 1.55˚C lower than the zinc roof surface temperature. However, the average profile of the lowest roof surface temperature during the daytime is on the asbestos roof (38.71˚C). Keyword: Roofing material, Thermal condition, Roof room Abstrak: Kondisi termal yang tidak nyaman pada bangunan banyak dikeluhkan oleh penghuni karena pemilihan material atap yang tidak sesuai, sehingga menjadikan bangunan tidak dapat mencapai kondisi termal yang diharapkan. Pemilihan material penutup atap yang tepat akan membantu di dalam proses pendinginan udara serta meminimalisir penggunaan energi untuk pendinginan ruang. Penelitian ini dilakukan untuk mengetahui kondisi termal ruang atap yang dihasilkan dari berbagai jenis bahan material atap yang sudah ditentukan. Objek studi dari penelitian ini adalah ruang atap pada bangunan rumah tinggal dengan bentuk atap pelana dengan kemiringan sudut atap 30O. Bahan penutup atap adalah genteng, asbes dan seng. Data hasil penelitian menunjukkan bahwa rata-rata termal ruang atap pada atap genteng lebih rendah 1.91OC-2.31OC dari atap asbes dan seng. Atap genteng juga lebih dapat menahan radiasi panas matahari. Rata-rata nilai temperatur permukaan atap genteng lebih rendah 0.28˚C dari temperatur permukaan atap asbes dan 1.55˚C lebih rendah dari temperature permukaan atap seng. Namun rata-rata profil temperatur permukaan atap terendah saat siang hari adalah pada atap asbes  (38.71˚C).Kata Kunci: Bahan penutup atap, Kondisi termal, Ruang atap
PULAU BAHANG KOTA (URBAN HEAT ISLAND) DI KOTA YOGYAKARTA DAN DAERAH SEKITARNYA HASIL INTERPRETASI CITRA LANDSAT OLITIRS TAHUN 2013 Wicahyani, Suksesi; Sasongko, Setia Budi; Izzati, Munifatul
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 11, No 2 (2014): July 2014
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v11i2.8027

Abstract

Urban heat island is a phenomenon that urban have higher temperature thansurrounding area. Factors that influence the temperature consist of factors thatcan be controlled by humans, including the city design and structure, totalpopulation , and factors that can not be handled by human, like season, cloudcover, and atmospheric dynamics (Rizwan et al., 2008). The purposes of thestudy were to determine urban heat island in Yogyakarta and its surroundingarea, temperature range, and the role of land cover to the temperature. Urbanheat island type that identified in this study was surface urban heat island. Theheat island was obtained from interpretation of Landsat Imagery catched onSeptember 12, 2013. This image were used to determine the type of land coverbeside temperature. Heat island occurred at Yogyakarta and surrounding area.The heat focused in Yogyakarta City and extended to the north-east of the city.Range the temperature were 5 up to 10°C. Land cover associated with the lowtemperature was vegetation while the land cover associated with hightemperature was building area.