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All Journal The Journal of Experimental Life Sciences (JELS) Jurnal Sumberdaya Alam dan Lingkungan Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Teknologi Pertanian Jurnal Sains dan Teknologi Pangan Jurnal Pertanian Terpadu JURNAL REKAYASA KIMIA & LINGKUNGAN
Ruslan Wirosoedarmo
Program Studi Teknik Lingkungan, Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Mechanical Engineering Medicine & Pharmacology Neuroscience

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Pendekatan Teori Fractal untuk Menentukan Kurva Retensi Air pada Vertisol dan Alfisol Hasil Olah Tanah Wirosoedarmo, Ruslan
Jurnal Teknologi Pertanian Vol 5, No 3 (2004)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The water retention in the soil is determined by distribution of soil particle measurement.  The growth of the plants are influenced by the soil characters such as the structure, strength of the soil it self, the soil resitance to water The retention of the water can be estimated exactly by using the distribution data of particle measurement. So far, the determination of the water retention curve used is by using pressure plate, which is set in any pF, so it needs longer time. Model of the water retention characteristic is based on fractal model of soil structure. Up to now, soil structure is difficult to be quantitative or on the other hand, it is stated in qualitative, but by using fractal theory of soil structure, it can be quantitative. Fractal approach to set the water retention characteristic is based on water structure named Pore Solid Fractal (PSF). The model shows water retention characteristic related on water structure parameter, which means not only use the distribution of soil solid measurement related with model scaling. The calculation results using mass and measure are obtained the value of fractal mass dimension (Dm) which is estimated for alfisol = 2.555 ± 0.454, alluvial soil = 2.403 ± 0.332  and vertisol = 2.624 ± 0.419.  The corve of water resistance model is obtained in good result for alfisol with D value of 2.71, alluvial soil with D value of 2.735, and vertisol with D value of 2.878.  Based on the mechanical soil analysis, it could get the alfisol volume weight = 1.248 gr/cm2, alluvial soil = 1.107 gr/cm2, and vertisol = 2.63 gr/cm2, alfisol specific weigt = 2.915 gr/cm3, alluvial soil = 2.42 gr/cm3, and vertisol 2.63 gr/cm3, and alfisol porosity = 0.487m3/m3, alluvial soil = 0.501 m3/m3 and vertisol 0.605 m3/m3 Vertisol has the biggest D value, while alfisol has the smallest one.  Vertisol has the biggest water composition value, while alvisol has the smallest one.  It’s because there is much pliable composition in vertisol.  The D value correlation is in line with the water composition, i.e. the higher of water composition, the higher of D value.   Key Words :  fractal theory, model of soil structure, vertisol, alfisol
Study on Form, Drainage Network, and Watershed Hydrograph by Using SIMODAS (Case Study on Sabu Island - Nusa Tenggara Timur) Wirosoedarmo, Ruslan; Haji, A. Tunggul Sutan; Pramesti, Erlita Meidya
Jurnal Teknologi Pertanian Vol 11, No 2 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Watershed management includes the identification of linkages between land use, soil, and water; between the upstream and downstream area; and a system in the hydrology which consists of the system input and system output. The system output from one river basin system is the flood discharge river which is the integrator that influenced by catchment area. River flood discharge is affected by wheather Watershed acts as a regulator of the process especially in terms of hydrology.  Hydrograph form, in general, is strongly influenced by the nature of the rainfall, the length of the main stream slope, the direction and shape of the watershed.  Research was conducted in Sabu Island, Nusa Tenggara Timur. The method used was the spatial analysis and flood hydrographs. Data processing was done by displaying spatial data in Arc View to perform the cutting process Daieko watershed, Ladeke and Rainkore. Then, it was processed in data Elevetion Model (DEM) of each watershed by Arc View.  The results showed that Ladeke Watershed is the most potential to flooding from the Daieko and Rainkore with the flood peak was always high. Form of bird feathers watershed flood peak discharge value was small with relative long time. Form a broad basin with a river pattern of spread (radial) tended to produce values of flood peak discharge. Radial form of the most sensitive watersheds and smallest form parallel to the change of land was due to increasing flood discharge.Keywords: shape of watershed, the hydrograph, SIMODAS
Effect on Sedimentation Behavior and Performance of Irrigation Channel at Waru-Turi Kanan Kediri Wirosoedarmo, Ruslan; Haji, Alexander Tunggul Sutan; Kristanti, Estin D.
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objectives of this research were to determine the rate of sedimentation in the primary, secondary, and tertiary channel; to determine channel dimension changes caused by sediment, and the effect of sedimentation to determine the cross section channel’s specific energy. This research consisted of two stages. First stage was data collection i.e. sediment sampling, measurement of flow velocity, and measurement of channel dimensions. Second stage was laboratory analysis. Each stage was replicated three times in 2-week intervals. Sediment sampling was done directly on the primary, secondary, and tertiary irrigation channel networks. Sedimentation rate in primary irrigation channel at dry season was 54.99x10-6 tons/day, while at the secondary was 0.88x10-6 tons/day, and at the tertiary was 0.65x10-6 tons/day. Primary channel with channel cross sectional area of 56.734 m2 reduced into 46.541 m2 due to 10.913 m2 area sedimentation. Secondary channel with channel cross sectional area of 3.086 m2 reduced into 2.732 m2 due to 0.354 m2 area of sedimentation. At tertiary channels with channel cross-sectional area of 1.398 m2 reduced into 1.341 m2 due to 0.057 m2 area sedimentation. The rate of sedimentation in the irrigation channel caused changes in the performance of the channel, namely the primary channel; the channel only worked for 76.93%, the secondary channel was 94.2%, and 91.47% in tertiary canals. Keywords: sedimentation, irrigation channel, subsection
Financial Evaluation Study on Maintenance Project of Irrigation Facilities (Case Study on Sumber Kedung Kandang Irrigation Sector, Kademangan Village, Gondang Legi, Malang) Suharto, Bambang; Wirosoedarmo, Ruslan; Kurniawan, Achmad
Jurnal Teknologi Pertanian Vol 2, No 1 (2001)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Irrigation development as a completed process, need monitoring and evaluation mechanism. It is use to help and to learn development dynamics. This research aimed for financial evaluation of irrigation project and to know economic efficiency of maintenance and operation irrigation facilities. Financial evaluation study did in Sumber Kedung Kandang irrigation sector, Kademangan village on November 2000. Completely randomized sampling did on 40 : 60 proportion, 95% probability limit and standard error 15%. From this condition, respondent must be interviewed is 41 person. This result showed production increase after irrigation facilities established, i.e. 5 – 7%. Financial evaluation showed it is feasible project, from the IRR value, i.e. 12% and the NPV value, i.e. Rp. 2.041.687.650,31. The BEP time of irrigation structure is 5 years, 6 months, and 11 days. The depreciation of it is Rp. 420.000 on 25 years period and residue value is Rp. 4.500.000. the operation and maintenance activities economically good enough, with IPL value after project increase for corn, sugar cane and rice from 0,10 to 0,11; 0,0127 to 0,0161 and 0,059 to 0,069 respectively.   Keywords: irrigation facilities, financial evaluation, irrigation development
The Effect of Water Content to Soil Tillage Wirosoedarmo, Ruslan
Jurnal Teknologi Pertanian Vol 6, No 1 (2005)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The aim of the research was to find out the effect of water content on the soil friability and to determine the appropriate soil water content for tillage. The soil samples were taken from Balai Benih Induk Palawija, Bedali, Lawang, Malang Regency and measurements of parameters were carried out at the Laboratory of Agricultural Power and Machinery, Faculty of Agricultural Technology, Brawijaya University, Malang from June until July 2002. The parameters used are the compression strength of soil taken from a number of soil volumes and the water contents. The results indicated that the soil strength was significantly affected by the water content as well as a combination of the water content and the volumes of soil aggregates. The reduction of volumes of soil aggregates due to decreasing of soil water content caused an increase in the soil strength. The value of soil strength ranges from 7,19 kPa to 166,39 kPa. The friability of Bedali soil was achieved in the range of soil water content: 20 – 26 % with a soil friability index (k) of 0,25-0,27.
EVALUASI KINERJA SALURAN DRAINASE PEMUKIMAN DENGAN MENGGUNKAN PERANGKAT LUNAK EPA SWMM 5.1 (Studi Kasus Perumahan Sawojajar Kota Malang, Indonesia) Wirosoedarmo, Ruslan; Rahadi, J. Bambang; Tunggul S. H, Alexander; Andi, Nur Syamsi Muhammad
Jurnal Sains dan Teknologi Pangan 2017: PROSIDING SEMINAR NASIONAL FKPT-TPI 2017
Publisher : JURUSAN ILMU DAN TEKNOLOGI PANGAN, UNIVERSITAS HALU OLEO

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Abstract

Alih fungsi lahan dari lahan pertanian menjadi lahan permukiman  menyebabkan perubuhan jumlahsaluran drainase, demensi saluran drainase, berkurangnya lahan resapan, perubahan tata guna lahan danmeningkatnya aliran air permukaan. Demikian pula yang terjadi di daerah permukiman Sawojajar Malangyang mempunya luas 283 ha.  Permukiman Sawojajar mempunyai 23 saluran drainase setelah alih fungsi lahan. Menggunakan perangkat lunak EP SWMM 51 untuk membuat pemodelan kinerja kapasitas drainasedan persamaan matematika. Hasil pemodelan didapatkan bahwa dari 23 saluran drainase yang ada maka 10diantaranya tidak dapat menampung air hujan dengan kata lain mengalami banjir pada musim penghujan.Sepuluh saluran yang tidak dapat menampung tersebut adalah C1, C3, C4, C9, C11, C12, C13, C16, C17 danC18 sehingga perlu dilakukan perencanaan ulang demensi supaya tidak terjadi banjir. Perencanaan dilakukan dengan menggunakan kala ulang 10 tahun. Hasil perhitungan di dapatkan Q sebesar 30,14 m3/detik, dan hasil simulasi SWMM sebesar 29,81 m3/detik. Kata kunci: Perencanaan ulang, drainase, EPA SWMM, kala ulang.
Analisis Nomografi Suhu, Laju Penguapan Dan Tekanan Udara Pada Alat Desalinasi Tenaga Surya Dengan Pengaturan Vakum Tyas, Martina W; Sutan Haji, A. Tunggul; Wirosoedarmo, Ruslan
Jurnal Sumberdaya Alam dan Lingkungan Vol 1, No 3 (2014)
Publisher : Brawijaya University

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Abstract

Krisis air bersih pada beberapa tahun lalu melanda banyak daerah di Indonesia, sedangkan penyaluran air bersih belum mampu memenuhi kebutuhan penduduk, sehingga masyarakat kesulitan air terlebih pada musim kemarau panjang. Teknologi desalinasi air laut sangat diharapkan untuk menghasilkan air tawar dengan produksi tinggi dan energi murah oleh karena itu di buatlah alat desalinasi air laut menggunakan tenaga surya dengan energi matahari sebagai sumber panas utama untuk penguapan.Tujuan dari penelitian ini adalah mendapatkan hubungan antara intensitas radiasi matahari dan suhu air laut terhadap besarnya laju penguapan air laut pada berbagai tekanan. Metode yang digunakan adalah dengan deskriptif kuantitatif yaitu mendeskripsikan hubungan antara intensitas radiasi matahari, suhu, energy kalor dan laju penguapan berdasarkan data pengamatan dan perhitungan. Dengan mengetahui nilai suhu dan intensitas matahari dapat di ketahui nilai laju penguapan untuk penggunaan alat desalinasi tenaga surya. Hasil pengamatan dan perhitungan didapatkan nilai intensitas radiasi matahari antara 584 Watt/m2 sampai 680 Watt/m2, suhu bahan rata-rata didalam alat desalinasi adalah 34.950C. Energi kalor matahari berada pada kisaran 353.41 Watt – 454.46 Watt, laju penguapan tertinggi di dalam ruang vakum adalah 611.52 mLhari-1. Hubungan radiasi matahari, suhu, tekanan vakum berbanding lurus terhadap laju penguapan Kata kunci : desalinasi, laju penguapan, intensitas radiasi matahari, energi kalor matahari
Analisa Perubahan Tata Guna Lahan dan Pengaruhnya Terhadap Pencemaran di Brantas Hulu, Kota Batu, Jawa Timur. Wirosoedarmo, Ruslan; Sutan Haji, Alexander Tunggul; Zulfikar, Fani
Jurnal Sumberdaya Alam dan Lingkungan Vol 3, No 1 (2016)
Publisher : Brawijaya University

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Abstract

Perubahan tata guna lahan akibat peningkatan jumlah penduduk di perkotaan mengakibatkan perubahan tata guna lahan terbuka menjadi permukiman. Areal permukiman telah mengakibatkan terjadinya penurunan kulitas air di DAS Brantas. Bahan pencemar berasal dari limbah domestik, limbah pertanian, limbah taman rekreasi, limbah pasar, limbah rumah sakit, dan limbah industri. Oleh karena itu, identifikasi pola perubahan tata guna lahan dibutuhkan untuk menganalisis pengaruh perubahan tata guna lahan dan pencemaran di DAS Brantas. Penelitian ini menggunakan ArcView 3.3 untuk mengidentifikasi perubahan tata guna lahan yang terjadi di Kota Batu. Indeks Pencemaran (IP) digunakan untuk mengetahui tingkat pencemaran yang terjadi di DAS Brantas hulu dan mengevaluasi pengaruh perubahan tata guna lahan terhadap pencemaran menggunakan rumus indeks kualitas lingkungan hidup dan membandingkan nilai IP pada tahun 2008 dan tahun 2015. Luas total perubahan lahan di Kota Batu tahun 2008 - 2015 sebesar 2080.94 Ha, IP di wilayah Sumber Brantas meningkat dari 0.48 menjadi 0.87 pada tahun 2015. Di wilayah Coban Talun nilai IP meningkat dari 0.78 menjadi 1.43. Di wilayah Sidomulyo nilai IP 1.48 meningkat menjadi 2.15. Di wilayah Temas nilai IP 1.71 meningkat menjadi 2,2. Di wilayah Pendem nilai IP 1.49 meningkat menjadi 1.72. Nilai Indeks Kualitas Lingkungan Hidup (IKLH) secara keseluruhan pada DAS Brantas Hulu yaitu cukup tahun 2008 dengan nilai IKLH 66.84 dan tahun 2015 dengan nilai IKLH 66.84. Kata kunci : DAS Brantas Hulu, indeks pencemaran, perubahan tata guna lahan.
Komposisi Sampah dan Potensi Emisi Gas Rumah Kaca pada Pengelolaan Sampah Domestik: Studi Kasus TPA Winongo Kota Madiun Kiswadayani, Aliftya Vicky; Susanawati, Liliya Dewi; Wirosoedarmo, Ruslan
Jurnal Sumberdaya Alam dan Lingkungan Vol 2, No 3 (2015)
Publisher : Brawijaya University

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Abstract

Aktivitas pengelolaan sampah dapat menghasilkan emisi GRK yang berbeda-beda, metode penimbunan sampah dapat mengakibatkan berton-ton gas metana (CH4) sedangkan aktivitas pengomposan sampah yang bisa dikatakan bermanfaat ternyata juga menyumbang emisi CH4 dan N2O. Tujuan Penelitian ini yaitu untuk mengetahui besarnya emisi gas yang dihasilkan dari masing–masing pengelolaan sampah di TPA Winongo saat ini dan proyeksi hingga 10 tahun mendatang, untuk mengetahui jumlah timbulan sampah dan komposisi sampah di TPA Winongo saat ini dan proyeksinya hingga 10 tahun mendatang. Persamaan yang digunakan dalam perhitungan ini yaitu mengacu pada Intergovernmental Panel on Climate Change (IPCC 2006 Guideline). Kemudian hasil perhitungan tersebut diproyeksikan dengan mempertimbangkan data hasil proyeksi jumlah penduduk dan timbulan sampah di TPA Winongo Kota Madiun. Hasil proyeksi emisi gas rumah kaca selanjutnya dibuat ekivalen dalam basis CO2 eq thn-1 menggunakan indeks Global Warming Potential (GWP) dan dijumlahkan. Hasil penelitian menunjukkan bahwa nilai emisi gas rumah kaca di TPA Winongo Kota Madiun dari aktivitas penimbunan dan pengomposan antara lain tahun 2015 sebesar 5905.59658 ton CO2 eq thn-1 dan pada tahun 2025 sebesar 7461.38442 ton CO2 eq thn-1. Hal ini telah membuktikan bahwa emisi gas rumah kaca di TPA Winongo Kota Madiun setiap tahunnya mengalami kenaikan yang cukup signifikan. Kata kunci: domestik, emisi, timbulan sampah
Perbedaan Laju Infiltrasi Pada Lahan Hutan Tanaman Industri Pinus, Jati Dan Mahoni Budianto, Pranciska Trisnawati Handayani; Wirosoedarmo, Ruslan; Suharto, Bambang
Jurnal Sumberdaya Alam dan Lingkungan Vol 1, No 2 (2014)
Publisher : Brawijaya University

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Abstract

Salah satu faktor yang dapat meningkatkan laju infiltrasi adalahadanya vegetasi pada lahan. Salah satu contoh lahan yang penggunaannya didominasi oleh vegetasi tertentu adalah Hutan Tanaman Industri (HTI). Tujuan penelitian:(1) mengetahui tekstur, berat isi, permeabilitas dan kadar bahan organik tanah pada lahan, dan (2) mengetahui vegetasi lahan HTI yang memiliki nilai laju infiltrasi tertinggi. Penelitian ini dilakukan padalahan HTI dengan vegetasi pinus (Pinus merkusii), jati (Tectona grandis) dan mahoni (Swietenia macrophylla). Analisa ragam menggunakan Tipe RAK. Uji infiltrasi setiap lahan diambil 3 titik lokasi dan data diolah dengan metode infiltrasi Horton.Berdasarkan hasil perhitungan infiltrasi Horton diperoleh lahan HTI pinus memiliki laju infiltrasi tertinggi sebesar 24.96 cmh-1, kemudian lahan HTI mahoni sebesar 8.69 cmh-1 dan lahan HTI jati sebesar 4.06 cmh-1. Lahan HTI pinus menunjukkan korelasi positif antara sifat fisik tanah (tekstur tanah dan permeabilitas) dengan laju infiltrasi aktual, sedangkan lahan HTI jati dan lahan HTI mahoni tidak menunjukkan korelasi positif,lahan HTI pinus memiliki laju infiltrasi tertinggi karena termasuk kelas tekstur lempung berdebu yang tergolong standar laju infiltrasi sedang dan nilai permeabilitas tertinggi sebesar 28.33 cmh-1yangtergolong laju infiltrasi sedang. Berdasarkan hasil uji korelasi dan uji regresi antara laju infiltrasi aktual dan laju infiltrasi Horton diperoleh hubungan yang sangat nyata, sehingga metode infiltrasi Horton dapat digunakan untuk memperkirakan laju infiltrasi pada ketiga lahan HTI. Kata kunci: Double ring infiltrometer, Hutan tanaman industri, Infiltrasi Horton, Laju infiltrasi  
Co-Authors Achmad Kurniawan Akhmad Adi Sulianto, Akhmad Adi Alexander Tunggul Sutanhaji Andi, Nur Syamsi Muhammad Ardika, Adriel Juan Azizah, Sari Aulia Bambang Rahadi Bambang Rahadi Widiatmono Bambang Suharto Bambang Suharto Cendra Irawan Devianto, Luhur Dita Ermayanti Erlita Meidya Pramesti Estin D. Kristanti Eunice, Samella Evi Kurniati Fajri Anugroho, Fajri Ghulam Arsyad Addibi Haji, Alexander Hasanah, Fatmawati Uswatun Hidayati, Erina Aprilia Ifa Fajarika J. Bambang Rahadi J. Bambang Rahadi W. Kiswadayani, Aliftya Vicky Laksmana, Saktia Indra Lilik Imron Naimah Liliya Dewi Susanawati Lissa Rullis Syiama Melisa Dwi Desi Findiana Mentari Kinasih Nasfhia, Siti Desiree Novia Lusiana Pranciska Trisnawati Handayani Budianto Riananda, Zavira Satwika Desantina Muktiningsih, Satwika Desantina Seto Sugianto Tunggul S. H, Alexander Tyas, Martina W Usman Apriadi Wulan Ruhunnatiqah Hijriyati Zulfikar, Fani