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Yuli Pratiwi
Institut Sains & Teknologi AKPRIND Yogyakarta
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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REKAYASA PEMBUATAN MESIN PERAJANG RUMPUT UNTUK KELOMPOK PETERNAK SAPI DI KABUPATEN SLEMAN DAN BANTUL MENGGUNAKAN PROGRAM APLIKASI AUTOCAD Waluyo, Joko; Pratiwi, Yuli; Sodikin, Imam
JURNAL GAUNG INFORMATIKA Vol 9 No 2 (2016): Jurnal Gaung Informatika Vol. 9 No. 2 Juli 2016
Publisher : JURNAL GAUNG INFORMATIKA

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Abstract

Cattle Breeders Group Kandang Sedyo Makmur in Dukuh Ngemplak, Desa Umbul Martani, Kecamatan Ngemplak Kabupaten Sleman, raising 250 cattle with 10 tons / day feed requirement, and dan Cattle Breeders Group Catur Andini in Dukuh Wonocatur, Desa Banguntapan Kabupaten Bantul, raising 80 cows with 3.2 tons / day feed requirement. Problems that exist in these two groups of cattle ranchers is during the rainy season grass needs can be met and excessive amount of grass supplies, while during the dry season grass supplies are still less consequent needs of the grass can not be fulfilled.Based on the above, it is necessary to engineer the grass chopper machine to optimize the animal feed which during the rainy season is abundant to be cut, processed and stored and can be used for animal feed needs during the dry season. This machine is also able to cut corn stems and stems of sugar cane crops so that it can be used as animal feed, especially to increase the supply of animal feed in the dry season so that the needs of animal feed can be met. Because based on the facts on the ground, cutting corn stalks of corn and sugarcane are quite hard, can not be done manually with a cutting tool like a sickle. The working principle of grass chopper machine is corn stalk, stalk of sugar cane and straw and elephant grass inserted at entrance at tool, then cutting tool rotate and directly cut the stem of plant that has been entered, so happened cutting process, then result of cutting out through the exit of the machine that has been prepared bagor bag so that pieces can go directly into the bag so it is not scattered. This activity can be realized because of obtaining grant for Science and Technology for Society financed by Kemenristek Dikti. Based on the results of grass cutter machine testing, it was able to cut the grass elephant, corn stalks and sugar cane as much as 10 kg / menit or 600 kg / hour with homogeneous pieces and small size, whereas if done manually using human labor with tools cut the sickle, it was only able to cut as much as 1kg / minute with the cutout results are not homogeneous. By making grass chopper machine,sugarcane stalk and corn stalk, it can reduce the need for labor so that operational costs can be reduced and the income of the cattle breeder group can increase.
PERBANDINGAN EFEKTIVITAS PENYERAPAN Pb DAN CO DI UDARA PADA TANAMAN ANGSANA (PTEROCARPUS INDICUS) DAN GLODOGAN TIANG (POLYALTHIA LONGIFERA) SEBAGAI UPAYA BIOFILTER UDARA (Studi Kasus di Jalan Affandi Yogyakarta) Hastutiningrum, Sri; Pratiwi, Yuli
Jurnal Teknologi Technoscientia Vol 10, No 2 (2018): Vol 10 No 2 Februari 2018
Publisher : IST AKPRIND YOGYAKARTA

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Abstract

Affandi Street is one of the main Street that uses plant in every road (green line) in an effort to reduce air pollution. Angsana and Glodogan Tiang plants have a role in reducing air pollution. The purpose of this study was (1) to compare the effectiveness of Lead absorption and Carbon Monoxide in the air between Angsana plant and Glodogan Tiang, (2) knowing the point of the highest contamination of the plants and (3) to know the leaf position which has the most effective absorption.The research was conducted on October 2017-February 2018. The method used was the lower and upper leaf sampling on Angsana and Glodogan Tiang at 3 points along Affandi Street that is, the point 1 intersection of Condong Catur, the 2nd point in front of Mirota Gejayan , and point 3 on Demangan market. Repeat sampling three times in one month, then the sample was tested using Atomic Absorption spectrophotometer (AAS) and Spektrofotometer UV-Vis method at Balai Besar Teknik Kesehatan Yogyakarta, and data analysis using ANAVA and MANAVA method with SPSS application. The results showed that plants greatly affect the absorption of air pollutants in the Affandi Street, from the results it is known that the Glodogan Tiang plant is a better plant in absorbing Pb and CO with average absorbing 3.51189 mg/kg, while the average Angsana absorbs 3,38519 mg/kg. The highest point of pollution location is at location point 3, Demangan market. The more effective leaves position in absorbing Pb is the lower leaf plant and the more effective leaf position absorbs the CO that is the upper leaves of the plant.
IbM KELURAHAN GULUREJO (KAWASAN PENGRAJIN BATIK) UNTUK MENGATASI MASALAH PENCEMARAN LINGKUNGAN AKIBAT LIMBAH CAIR BATIK Pratiwi, Yuli; Santoso, Gatot; Waluyo, Joko
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.092 KB) | DOI: 10.34151/technoscientia.v7i1.608

Abstract

Batik wastewater in the hamlet Mendiro and Sembungan, Village Gulurejo, District LendahKulonProgo Regency is still a problem for batik craftsmen and society. Contamination of well water and river water in the Village Gulurejo due batik effluent, causing adverse health effects and cause a skin disease such asItchingand other skin disorders.The purpose of this IbM program is to increase knowledge about the technology and batik effluent treatment procedures batik so that the quality of effluent discharged to the environment according to the Liquid Waste Quality Batik is valid and does not pollute the environment. To achieve these objectives there should be a batik wastewater treatment equipment that is easy in operation and can be used interchangeably by batik craftsmen. Achieved results or findings is the realization of sewage treatment plants in the form of batik assemblies elektrokoagulan engineering technology with a method that is effective, efficient, easy in operation and requires a power source of120 watts. Wastewater treatment plant that includes batik: batik waste tank capacity of 500 liters; elektrokoagulan tub capacity of 100 liters; 2 bath deposition capacity of 4,000 liters; 3 bath filtration capacity of 6000 liters which includes coral filter media, split and sand & activatedcharcoal.
REKAYASA RANCANGAN MESIN TEMPA RAMAH LINGKUNGAN GUNA MENINGKATKAN KAPASITAS PRODUKSI PADA KELOMPOK PANDE BESI Waluyo, Joko; Pratiwi, Yuli; Parwati, Cyrilla Indri
JURNAL GAUNG INFORMATIKA Vol 12 No 1 (2019): Jurnal Gaung Informatika Vol.12 No 1 Januari 2019
Publisher : JURNAL GAUNG INFORMATIKA

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Abstract

This study purpose to design an environmentally friendly forging machine in the group of "DL" and "PRT" pande besi who are partners in the Village of Palbapang, PandakDistrict, Bantul Regency. So far, the two partners have made agricultural equipment manually by treating raw materials or heated iron forged repeatedly using a hammer according to the desired form of agricultural equipment. For this process, 3 workers are needed, even though the current condition of the two groups of pande besi is the difficulty of finding workers, so that market demand related to agricultural equipment cannot be fulfilled.The research method is carried out after all data and information have been collected by designing an environmentally friendly forging machine with the help of showhare autocad, then looking for materials and tools that will be used to make the design of the forging machine, and making environmentally friendly forging machinesaccording to the specifications obtained . Before being submitted to partners, testing of the number of punches per minute, as well as the noise level. The results that have been achieved in this study are the creation of an environmentally friendly forging machine design with the capacity to forge machetes roughly 5 pieces / hour, as well as a one-time blow to the depressed workpiece depth of 2 to 3 mm with the number of blows produced 200 to 250 punch a minute, with the noisecaused to the forging machine at 60 dBA. From these results there was a 45% reduction in the noise figure from the previous one using a 110.17dBA manual tool to 60 dBA.The capacity of agricultural equipment production in the two partners of the iron court group increased to 2 to 3 times when compared to using human labor, and in the end could improve the welfare of the partner iron-iron group and the iron-iron society in general.
PENGOLAHAN LIMBAH CAIR RUMAH TANGGA DENGAN LUMPUR AKTIF YANG DIPACU ACLIMATED ARTIFICIAL SEWAGE Pratiwi, Yuli
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 10 Edisi Khusus September 2005
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.927 KB) | DOI: 10.34151/technoscientia.v0i0.1930

Abstract

This research is to know the effectivities of household processing biological with active mud pushed by acclimated artificial sewage, it is done by observing parameter DO (Disolved Oxygen), BOD (Biological Oxygen Demand), COD (Chemical Oxygen Demand), SS (Suspended Solid) and plankton as proponent data and then it is compared with quality standard included on SK Gubernur DIY No.281/KPTS/1998 about liquid waste. Household which is used for researching is from installation unit of waste water Sewon-Bantul. Waste is treatment with active mud pushed by acclimated artificial sewage concentration 0 % (control), 15 %, 30 %, 45 % with time of observation 0 hour, 2 hours, 4 hours, 6 hours, 24 hours. To know concentration of active mud to improve waste quality, it is used SPSS that is anava and Tukey test. The result of this research has shown that processing of household with active mud pushed by acclimated artificial sewage concentration 30 % is the most optimal and it can be improved: DO (63,64 %), BOD (74,06 %), COD (71,96 %), SS (65,57 %), where as the number of identified plankton is 24. The result of waste processing has been also suitable with quality standard of liquid waste included on SK Gubernur DIY No.281/KPTS/1998
PENGOLAHAN LIMBAH CAIR INDUSTRI ELEKTROPLATING DENGAN FITOREMEDIASI MENGGUNAKAN AZOLLA MICROPHYLLA Pratiwi, Yuli; Sunarsih, Sri; Dewi, Kurnia Puspa
Jurnal Teknologi Vol 12 No 1 (2019): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.3415/jurtek.v12i1.2151

Abstract

Air limbah industri elektroplating umumnya banyak mengandung logam-logam berat, diantaranya adalah logam kromium (Cr) yang dapat membahayakan lingkungan dan kesehatan. Penelitian ini bertujuan untuk mengetahui pengaruh waktu tinggal dan berat basah Azolla microphylla dalam menurunkan kadar BOD, COD dan Cr-Total pada limbah cair pelapisan logam. Waktu tinggal antara 2, 4, 6, 8, 10 hari dan berat basah tanaman antara 70, 90, 110, 130 dan 150 gram terhadap parameter yang diuji yaitu BOD, COD dan Cr-Total air limbah elektroplating. Hasil penelitian menunjukkan waktu tinggal paling baik pada pengolahan ini adalah enam hari dengan nilai BOD 22,26 mg/L dan efisiensi penurunan sebesar 65,74%. Nilai COD 61 mg/L dan efisiensi penurunan sebesar 72,79%. Nilai Cr-Total 2,98 mg/L dengan efisiensi penurunan sebesar 93,23%. Berat basah tanaman yang paling baik menurunkan kadar BOD, COD dan Cr-Total adalah 150 gram. Nilai BOD yaitu 24,07 mg/L dan efisiensi penurunan sebesar 62,97 %. Nilai COD 67,87 mg/L dan efisiensi penurunan sebesar 69,72%. Nilai Cr-Total 4,13 mg/L dan efisiensi penurunan Cr-Total sebesar 90,58 %. Menurut Peraturan Gubernur Daerah Istimewa Yogyakarta No. 7 Tahun 2016 hanya BOD dan COD yang memenuhi baku mutu, sedangkan Cr-Total tidak memenuhi baku mutu.
PENGGUNAAN SIG UNTUK OPTIMASI POLA PENGUMPULAN DAN PENGANGKUTAN SAMPAH DARI TEMPAT PEMBUANGAN SEMENTARA (TPS) KE TEMPAT PEMBUANGAN AKHIR (TPA) Pratiwi, Yuli; Dwi Sukmawati, Paramita; Ramdhan Andriana, Dede
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 14 No 1 Agustus 2021
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v14i1.3617

Abstract

Transportasi sampah bertujuan membawa sampah dari lokasi pemindahan atau dari sumber sampah secara langsung menuju Tempat Pembuangan Akhir (TPA). Penelitian ini bertujuan untuk 1)mengetahui sebaran Tempat Pembuangan Sementara (TPS) pada 5Kecamatan yang terdapat di Kabupaten Karawang, 2)mengetahui jalur eksisting pengangkutan sampah di Kabupaten Karawang dengan bantuan Sistem Informasi Geografis (SIG), 3)menganalisis dan mengevaluasi efektivitas dan efisiensi rute pengangkutan sampah yang ada saat ini di Kabupaten Karawang dan 4)menghitung tingkat kebutuhan kendaraan pengangkutan sampah yang dibutuhkan di Kabupaten Karawang. Penelitian dilaksanakan di Kecamatan Karawang Barat, Karawang Timur, Telukjambe Barat, Telukjambe Timur dan Klari di Kabupaten Karawang pada bulan Januari – Februari 2020. Untuk melakukan optimasi pola pengumpulan dan pengangkutan sampah menggunakan Sistem Informasi Geografis (SIG) dengan metode Network Analyst. Metode ini menentukan rute yang optimal sehingga dapat efektif dan efisien dalam sistem pengangkutan sampah. Data yang digunakan adalah lokasi poll, TPS dan TPA, jumlah TPS, waktu dan jarak perjalanan yang ditempuh, rute angkutan eksisting, jarak antara pool dengan TPS-TPS dan jarak antara TPS-TPA, jumlah kendaraan. Garbage transportation vehicles needed as many as 128 units which means that additional vehicles need as many as 90 units. Hasil penelitian pada 5 Kecamatan di Kabupaten Karawang kendaraan pengangkutansampah yang beroperasi sebanyak 38 unit dan 111 TPS. Jalur eksisting pengangkutan sampah, rata-rata jaraknya 91,08 km dan waktu tempuh 3,63 jam sedangkan jalur pengangkutan sampah yang sudah dianalisis didapatkan jarak rata-rata 43,94 km dan waktu tempuh 2,32 jam. Jadi mempunyai selisih jarak 53,94 km dan waktu tempuh 1,31 jam pada 38 pengangkutan sampah. Estimasi timbulan sampah yang dihasilkan 1.532,234 m3/hari. Pada saat ini jumlah kendaraan yang terdapat di pool sebanyak 38 unit. Kendaraan pengangkutan sampah yang dibutuhkan sebanyak 128 unit yang artinya perlu tambahan kendaraan sebanyak 90 unit. Biayakonsumsi bahan bakar kendaraan pada rute eksisting sebesar Rp. 4.133.735 per hari sedangkan sesudah dilakukan analisis menjadi Rp. 2.633.879 per hari, jadi penurunan sebanyak Rp. 1.479.856 per hari berarti bisa menghemat biaya operasional pengangkutansampah.
Kajian Pengaruh Pelumatan dan Penambahan Aktivator terhadap Produksi Biogas dari Sampah Sisa Makanan Restoran Yuli Pratiwi; Angge Dhevi Warisaura
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

This research to determine the effect of grinding and addition of activator on biogas production from restaurant foodwaste. Variations that were used in this study is grinded and not grinded. The second variations is by adding Green Phoskko® 0%, 0,1%, 0,25%, and 0,5%. Each variation is load 7 liters substrate. The study was conducted for 30 days. Parameters observed during the study are Chemical Oxygen Demand, pH, temperature, moisture content, Total Solid,Volatile Solid and volume of biogas in manometer. At the end of the study, biogas tested by Gas Chromatography to determine methane gas. The best reactor conditions on producing biogas is substrate with grinded materials and 0,25% of activator added. Materials that grinded has plenty volume of biogas and a fairly methane content.  It was showed in the highest cumulative volume of biogas produced by the reactor B1 with a volume of 202.41 mL, methane content 42 μL / 1mL and B3 with a volume of 171.666 mL, methane content 1,12 μL / 1mL. Grinded material and addition of activator has effect but not significant on the biogas production. This occurs because of an imbalance of anaerobic processes caused by the rate of pH decrease. Using of Green Phoskko® as an activator is not enough to provide optimal results.
Uji Toksisitas Limbah Cair Industri Tepung Tapioka Sebelum dan Sesudah Dilakukan Pengolahan Menggunakan Metode Ozonasi Terhadap Ikan Nila (Oreochromis niloticus) Sri Hastutiningrum; Yuli Pratiwi; Lelly Nursanti
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2019: PROSIDING SNTKK 2019
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

PENENTUAN TINGKAT PENCEMARAN LIMBAH INDUSTRI TEKSTIL BERDASARKAN NUTRITION VALUE COEFICIENT BIOINDIKATOR Yuli Pratiwi
Jurnal Teknologi Vol 3 No 2 (2010): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

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Abstract

Industri tekstil menghasilkan limbah cair berwarna yang dapat menyebabkan pencemaran air dan bersifat toksis bagi bioindikator (ganggang dan ikan). Penelitian ini menggunakan ikan sebagai bioindikator untuk menentukan tingkat pencemaran limbah industri yang dibuang ke sungai. Tujuan penelitian adalah untuk mengetahui tingkat pencemaran air di Sungai Blader di Cilacap setelah menerima limbah industri tekstil, berdasarkan koefisien nilai nutrisi (NVC: Nutrition Value Coeficient) ikan yang hidup di sungai ini, serta mengetahui kualitas air sungai tersebut berdasarkan parameter fisik dan kimia. Lokasi Penelitian adalah di Sungai Blader Cilacap yang merupakan tempat pembuangan limbah cair industri tekstil. Penelitian ini dilakukan dalam tiga tahap selama tiga bulan. Tahap pertama adalah penentuan koefisien nutrisi bioindikator (ikan uji) dan pemeriksaan kualitas air Sungai Blader yang dilakukan di lokasi penelitian. Tahap kedua adalah analisis limbah industri tekstil di Laboratorium Teknik Lingkungan IST AKPRIND Yogyakarta. Tahap terakhir adalah analisis data dan pembuatan laporan penelitian. Hasil Penelitian menunjukkan bahwa limbah cair industri tekstil yang dibuang di Sungai Blader Cilacap, dapat menurunkan koefisien nilai nutrisi ikan uji (ikan betik / Anabas testudineus, BL) menjadi 1,53- 1,63 yang berarti tidak memenuhi syarat untuk dikonsumsi manusia. Dilihat dari parameter temperatur, pH, CO2, kekeruhan dan O2 terlarut kualitas air Sungai Blader di lokasi pembuangan limbah industri tekstil, mengalami pencemaran lebih berat dibandingkan lokasi pengamatan lain. Limbah industri tekstil yang dibuang di Sungai Blader Cilacap, sebagian parameternya masih memenuhi syarat baku mutu air limbah yang berlaku di Jawa Tengah, hanya ada tiga parameter yang melebihi standar baku yaitu COD, pH air, dan ammonia bebas.
Co-Authors Angge Dhevi Warisaura, Angge Dhevi Cyrilla Indri Parwati Dewi, Kurnia Puspa Dwi Sukmawati, Paramita Fisher Inco Rande Bunga Gatot Santoso Hadi Saputra I Gusti Bagus Wiksuana Imam Sodikin Jamhari Jamhari Joko Waluyo Lelly Nursanti Lestari, Nidi Nidia Lestari Ramdhan Andriana, Dede Ravi Mardiyan SATRIYAS ILYAS Sri Hastutiningrum Sri Hastutiningrum Sri Sunarsih