Articles
Plants Growth Rate in Evapotranspiration continuous system reactors as the 2nd Treatment at Anaerobic-evapotranspiration system with High Strength Ammonium in Leachate Influent
Badrus Zaman;
Purwanto Purwanto;
Sarwoko Mangkoedihardjo
International Journal of Science and Engineering Vol 7, No 1 (2014)
Publisher : Chemical Engineering Diponegoro University
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DOI: 10.12777/ijse.7.1.48-51
Ammonium is one of parameter which responsible to leachate toxicity. Preliminary research was shown that the Fimbristylis globulosa (water plant), Alocasia macrorrhiza (terrestrial plant) and Eleusine indica (terrestrial grass) were potential plants for used as object in evaporation reactor system with high strength ammonium concentration in leachate treatment. This research was integrated of anaerobic system with evapotranspiration system with continuous influent using ammonium concentration in leachate was 2000 mg/l NH4-N. Plants growth rate was analyzed for 25 days operated. The result shown that average of thallus growth rate of Fimbristylis globulosa was 17,5 cm d-1. The average of leaf and thallus growth rate of Alocasia macrorrhiza was 18,1 cm d-1 and 3,2 cm d-1 respectively. The average of blade and thallus of Eleusine indica were same that was 4,7 cm d-1.This research conclude that integration system of anaerobic and evpotranspiration was be potential used for high strength ammonium in leachate treatment.
Faba Bean: a Promising Crop for Realizing a Healthier Potato Cropping System in the Dieng Highlands
Dina Rotua Valentina Banjarnahor
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 1, No 2 (2016): June 2016
Publisher : Universitas Atma Jaya Yogyakarta
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DOI: 10.24002/biota.v1i2.997
Dataran tinggi Dieng di Jawa Tengah menjadi pusat produksi kentang yang ternama di Indonesia karena kondisi iklimnya yang sangat mendukung. Kentang diperkenalkan ke petani setempat sekitar empat dekade yang lalu dan telah menjadi tanaman utama sejak saat itu. Setelah masa produksi yang panjang dan terus menerus, persoalan-persoalan agroekologis yang memicu turunnya hasil panen muncul di lahan. Di dalam tulisan ini akan dibahas potensi kacang babi (Vicia faba L.) sebagai salah satu kekayaan lokal Dieng untuk membangun sistem pertanaman kentang Dieng yang lebih sehat. Kacang babi umumnya dibudidayakan sebagai salah satu produk makanan ringan bagi wisatawan, tetapi pamornya masih kalah dibandingkan kentang. Tanaman ini, ketika bersimbiosis dengan bakteri Rhizobium dan cendawan mikoriza, memiliki kemampuan untuk mengikat nitrogen dari atmosfer dan meningkatkan ketersediaan fosfor (P) dan kalium (K) di tanah. Tanaman ini tahan dingin sehingga dapat menjadi pilihan budidaya yang tepat selama periode dingin di Dieng: yaitu pada bulan Juli dan Agustus. Selain itu, budidaya kacang babi berpotensi mengurangi pencucian hara tanah karena kebutuhan dan serapan hara P oleh tanaman relatif tinggi. Integrasi tanaman kacang babi ke dalam sistem pertanaman kentang, baik dalam bentuk tumpang sari ataupun rotasi, dapat membawa manfaat bagi tanah dan tanaman lainnya. Tantangan di masa yang akan datang dalam mewujudkan inovasi sistem pertanaman ini adalah pemahaman yang lebih dalam tentang dinamika unsur hara pada kondisi klimatik dan variasi tanah Dieng, kontribusi agroekologis tanaman-tanaman lain yang telah ada di lahan, serta persepsi dan sumber daya petani setempat.
Strategies for Paint Waste Minimization in the Packaging Industry
Ari Dina Permana Citra;
Purwanto Purwanto
Waste Technology Vol 8, No 1 (2020)
Publisher : Diponegoro University
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DOI: 10.14710/8.1.18-21
Cosmetic packaging painting using an alkyd resin compound is to make a smooth, glossy surface and attract the attention of consumers. The generated waste is handed over to a third party and has not been utilized as a product, so it requires a high enough cost. This research aims to develop a waste management strategy from its source to its utilization into a product. The research method uses a block diagram of the production process to identify waste generation and opportunities for prevention and reduction. Waste arising from alternative uses is created into a product leading to zero waste. This approach provides economic and environmental benefits for the cosmetics packaging industry.
Life Cycle Assessment on Cement Treated Recycling Base (CTRB) Construction
Sudarno Sudarno;
Purwanto Purwanto;
Pratikso Pratikso
Waste Technology Vol 2, No 2 (2014)
Publisher : Diponegoro University
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DOI: 10.14710/2.2.31-40
LCA is one of the few environmental management techniques that are used to perform a risk assessment, environmental performance evaluation, environmental auditing, and environmental impact assessment and must be applied to the construction CTRB. The purpose of this study was to determine the amount of energy consumption is used and determine the amount of emissions (CO2) in the implementation of the Foundation Layer Top (base course) with the former asphalt pavement aggregate blended cement / Recycling Cement Treated Base (CTRB). This study uses: (i) Compilation and data inventory of relevant inputs and outputs of a product system; (ii) Evaluating the potential environmental impacts associated with the data input and output; (iii) Interpret the results of the inventory analysis and impact assessment in relation to the research objectives. The results showed that Energy consumption in the implementation of recycling pavement (CTRB) is 225.46 MJ / km of roads and the resulting GHG emissions 17,43Ton CO2 / km of roads. Previous researchers to calculate the energy consumption of road works on the implementation of conventional (hotmix) is 383.46 MJ / km of roads and the resulting GHG emissions 28.24 Ton CO2 / km of roads. If the calculated difference between a job and Hotmix CTRB and then a comparison is made CTRB energy consumption is 158 MJ / km of road, this happens 70.07% savings and GHG emissions resulting difference is 10.81 tons of CO2 / km of road, resulting in a decrease in 62,02%.
BIAS GENDER DALAM AKSES KREDIT PERBANKAN (Studi pada Pengusaha Mikro dan Menengah di Salatiga)
Linda Ariany Mahastanti;
Yeterina Widi Nugrahanti
Modus Vol. 25 No. 2 (2013): MODUS
Publisher : Faculty of Business and Economics Universitas Atma Jaya Yogyakarta
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DOI: 10.24002/modus.v25i2.559
Women-owned business are often thought to face difculties in applying for and securing bank loans. They face any systematic non-economic discrimination in applying for credit. We test two question related to the success of women owned business in accessing commercial bank fnancing. First, are women-owned business less likely to apply for bank loan than business owned by man?, second if approved on their most recent application, are they more likely to receive a smaller loan?. Using quantitative methodologies with logit and multiple regression analysis, this study explores bias gender in applying bank loan at SMEs in Salatiga. We found gender to be related the size of the loan but not to be to the application for bank loan. These fnding may due to an omitted variable that could capture women’s concerns about maintaining control over their business.Keywords : Women-owned business, small and medium business, bank, credit availability, gender
Pemanfaatan Limbah Ternak Kelinci untuk Pembuatan Pupuk Organik Padat dan Cair
Nurhidayati Nurhidayati;
Abdul Basit
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 6, No 4 (2020): Desember
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada
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DOI: 10.22146/jpkm.53322
Universitas Islam Malang memiliki desa binaan yang terletak di Desa Codo, Kecamatan Wajak, Kabupaten Malang. Mayoritas masyarakat desa ini beraktivitas di bidang pertanian dan peternakan. Beberapa tahun terakhir, peternak di Desa Codo mengembangkan peternakan kelinci hingga terbentuk kelompok peternak kelinci. Namun, peningkatan jumlah peternak kelinci memunculkan permasalahan baru, yaitu melimpahnya limbah kotoran kelinci. Penanganan yang tepat diperlukan untuk mengatasi masalah limbah tersebut. Hal ini mendorong UIM untuk melaksanakan program pengabdian masyarakat dalam rangka transfer teknologi pembuatan pupuk organik padat dan cair yang berasal dari kotoran kelinci. Kegiatan dibagi dalam tiga tahap pelaksanaan, yaitu penyuluhan tentang pentingnya penggunaan pupuk organik untuk kesuburan tanah dan diskusi perihal berbagai masalah kesuburan tanah di lahan pertanian. Kegiatan kedua dan ketiga adalah pelatihan pembuatan kompos padat dan cair. Kegiatan ini dimulai pada Agustus–November 2019 dengan melibatkan mahasiswa sebagai fasilitator. Hasil kegiatan menunjukkan bahwa pelatihanpemanfaatan kotoran kelinci sebagai pupuk organik padat dan cair dapat memberikan pengetahuan tambahan bagi peternak kelinci. Peternak kelinci juga mendapatkan informasi tentang kualitas kompos kotoran kelinci dan kompos campuran serta dampaknya terhadap kesuburan lahan pertanian. Luaran kegiatan ini adalah 83% masyarakat telah mampu membuat pupuk organik dari kotoran kelinci dan menghasilkan produk pupuk organik padat dan cair dengan komposisi kimia yang berbeda.
KINERJA KOMISI D DEWAN PERWAKILAN RAKYAT DAERAH PROVINSI RIAU TAHUN 2015
Muhammad Afdal;
Isril "
Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Vol 3, No 2: WISUDA OKTOBER 2016
Publisher : Fakultas Ilmu Sosial dan Ilmu Politik Universitas Riau
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This study entitled "Performance of Commission D of the Regional Representatives Council Riau Province Year 2015", the study is based on a Regulation of the DPRD Riau Province No 30 of 2014 on the Rules of Conduct DPRD Riau Province decisive concerning the composition, status, rights, duties, functions, powers , as well as fittings DPRD Riau Province. The regulation also mentioned about the duties and functions of the Commission D as fittings remain DPRD Riau Province is also implementing a legislative function, budgetary, and oversight. Issues contained in this thesis is about the still low and not maximal performance of Commission D in its function as a legislative body area. As a legislative function is not running, the budget function is not maximized, and the implementation of the supervisory function is still not achieve the targets that have been planned throughout 2015. The method used in this study is a qualitative method that describes the data descriptively. Data collection techniques used were interviews, observation and document tracking. While the source of the data used are primary data obtained from the test site and supported by secondary data.Based on the results of research conducted there are several factors inhibiting the performance of Commission D in their duties the internal and external factors.Keyword: Performance, Commission D DPRD Riau Province
PEMANFAATAN LIMBAH IKAN NILA SEBAGAI FISHBONE HYDROXYAPATITE PADA PROSES ADSORPSI LOGAM BERAT KROM PADA LIMBAH CAIR
Gita Lokapuspita;
Mirza Hayati;
P Purwanto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,
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The contaminant substance such as heavy metal is a serious environmental problem because its toxicity and nondegredable characteristic neither in biological or chemical way. Chrom (Cr) is one of the pollutant in a liquid waste that poisionous. Hydroxyapatite (Ca5(PO4)3(OH)) is a phospat crystal from calcium which has a hydroxyl ion and great capability as an ion exchanger and heavy metal adsorber. Fishbone hydroxyapatite is the natural hydroxyapatite from fishbone. This research investigates the fishbone hydroxyapatite adsorption capacity of the chrom (Cr3+) in a laboratory study. The fishbone of nila burnt in a high temperature; 3000C and 6000C then grained and strained on 200 mesh measurement. The adsorption capacity of each fishbone hydroxyapatite, then be compared. The Langmuir’s adsorption isotherm equation Freundlinch’s adsorption isotherm equation can be used to get the characteristic and the maximum adsorption capacity of Cr3+. The difference of heat temperature influence the adsorption characteristic, adsorption power and adsorption capacity. At 300oC, the maximum adsorption Cr3+ capacity is 4,393 mg/gr and at 600oC, the maximum adsorption Cr3+ capacity is 5,540 mg/gr.
PENGAMBILAN ZAT WARNA ALAMI DARI KAYU NANGKA
Dany Eka Parasetia;
R Ritaningsih;
P Purwanto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,
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Textile dyes are divided into two, namely natural dyes and synthetic dyes. Natural dyes derived fromanimals and plants while the synthesis of dyes can be produced from these chemicals. Jackfruit plants is one type ofplant that can be utilized as a source of natural dyes for textiles by the wood extract. Manufacture of dyes from thejackfruit wood performed by the method of continue extractionoe with a soxhlet.Extraction results in the ratio 1: 15 that is the longer the extraction time the higher the yield obtained. Theoptimum time for extraction is 5 hours with a yield of 2.62% obtained for wood powder and shavings in 1:31% forwater content in the material 10%. While on the water content of 50% results in a material obtained by extraction of2.08% for wood powder and 1.08% for the shavings. In the ratio 1: 10 gained 1.68% yield for wood powder andshavings to 0.94% for water content in the material 10%. While on the water content of 50% results in a material is1.43% to 0.89% sawdust and shavings for.A very influential variable is the size of material and moisture content in the material. In the extraction ofdyes, solvents with a ratio of 1:15, the water content of 10% and the size of 100 mesh material produced the greatestyield of 2.62% obtained by linear regression is Y = 1.328 + 0256 x with a percent error of 0.16%.In the test fabric made with two methods ie with loundrymeter method for washing and methods crockmeterfor the desecration. Results of analysis of the fabric that has been colored later in the match with a grayscale andstainning scale.
Pengolahan Limbah Cair Yang Mengandung Minyak Dengan Proses Elektrokoagulasi Dengan Elektroda Besi
Agung Prabowo;
Gagah Hasan Basrori;
P Purwanto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,
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Abstract Electrocoagulation is a coagulation method using direct electric current through an electrochemical event. This study aims to determine the possible use of electrocoagulation method as an alternative in wastewater treatment industry. This experiment uses waste oil content with the observed parameter is the change in concentration of organic material (COD. study was conducted on laboratory scale in batch by using a 3 iron plate measuring 3x5 cm 2 as anode and 3 aluminum plates of the same size as the cathode. Variations performed on current density, electrocoagulation time and distance .. Distance electrode plate electrodes used were 2 and 3 cm. Analysis of the samples carried out after the first sample was deposited for 30 minutes. Laboratory analysis refers to the SNI 06-6989.2-2004 for the parameters COD,. The analysis shows that there allowance for the highest percentage COD is 29, 83% occurred at minute 120, 32 A/dm2 current density, with an electrode distance of 2 cm .. In general these experiments show on a laboratory scale in batch conditions, electrocoagulation method effective enough to treat waste compared oil content with conventional coagulation process.