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All Journal JURNAL TEKNOLOGI LINGKUNGAN JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI STRING (Satuan Tulisan Riset dan Inovasi Teknologi) International Journal of Applied Sciences and Smart Technologies Jurnal Teknologi Kimia Mineral Scientica: Jurnal Ilmiah Sains dan Teknologi
Ariyanti, Dhita
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Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Kinerja Membran Plat Berpori Berbasis Selulosa Asetat yang Disintesis Secara Inversi Fasa untuk Ultrafiltrasi Bakteri E.coli di PDAM Surabaya Ariyanti, Dhita; Widiastuti, Nurul; Safarina, Nourma
Jurnal Teknologi Lingkungan Vol. 21 No. 2 (2020)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.054 KB) | DOI: 10.29122/jtl.v21i2.3945

Abstract

ABSTRACTThe lack of consumable water in urban and industrial-dense areas encourages research on clean water treatment methods. Some current treatment methods, such as precipitation, adsorption, and UV light irradiation are ineffective for water with high levels of suspended solids, organic matter, and turbidity.  Therefore, alternative approaches are required to support the availability of clean and consumable water. The membrane technology is an alternative filtration method proposed in the East Surabaya's municipal waterworks area. The membrane filtration method is quite simple and easy to operate. This study aimed to determine the performance of cellulose acetate-based porous plate membranes synthesized by phase inversion for E. coli bacteria's ultrafiltration. As a raw material, cellulose acetate is preferred because of its high hydrophilicity and good biocompatibility. Membrane synthesis was carried out through the phase inversion method with acetone solvents and non-solvent water in the coagulation bath. The positive test for E. coli bacteria was carried out through the MPN (Most Probable Number) method on the municipal waterworks water samples before and after filtering with membranes. The results showed that the synthesis of cellulose acetate membrane had good homogeneity. This result was supported by the results of ANOVA single factor statistical data analysis. Also, cellulose acetate membrane had good permeability and flux performance as ultrafiltration of E. coli bacteria with a flux of 37.25 L/m2.hour.bar at a sufficient pressure of 5 bar. Test results for the presence of E. coli bacteria in PDAM water samples using the MPN method gave an initial indication that the water sample after filtration with cellulose acetate membrane was negative. Keywords: membrane, cellulose acetate, permeability, water fluxABSTRAKMinimnya air bersih yang layak konsumsi di daerah perkotaan dan padat industri mendorong penelitian tentang metode pengolahan air bersih. Kurangnya efektivitas metode pengolahan sebelumnya seperti pengendapan, adsorbsi, dan penyinaran dengan sinar UV untuk air dengan kadar suspended solids, zat organik, dan kekeruhan yang tinggi, diperlukan metode alternatif untuk mendukung ketersediaan air bersih layak konsumsi. Metode filtrasi alternatif yang ditawarkan di PDAM di kawasan Surabaya Timur. Metode filtrasi dengan membran sangat sederhana dan mudah dalam operasionalnya. Penelitian ini bertujuan untuk mengetahui kinerja membran plat berpori berbasis selulosa asetat yang disintesis secara inversi fasa untuk ultrafiltrasi bakteri E.coli. Selulosa asetat dipilih sebagai bahan baku membran karena selulosa asetat merupakan bahan polimer yang memiliki hidrofilitas tinggi dan biokompatibilitas yang baik. Sintesis membran dilakukan melalui metode inversi fasa dengan pelarut aseton dan nonpelarut air dalam bak koagulasi. Uji positif bakteri E.coli dilakukan melalui metode MPN (Most Probable Number) pada sampel air PDAM sebelum dan sesudah difiltrasi dengan membran. Hasil penelitian menunjukkan bahwa sintesis membran selulosa asetat memiliki homogenitas baik yang ditunjukkan oleh hasil analisis data statistika ANOVA single factor. Selain itu, membran selulosa asetat memiliki kinerja permeabilitas dan fluks yang baik sebagai ultrafiltrasi bakteri E.coli dengan ketercapaian fluks sebesar 37,25 L/m2.jam.bar pada tekanan efektif sebesar 5 bar. Hasil uji keberadaan bakteri E.coli pada sampel air PDAM dengan metode MPN memberikan indikasi awal bahwa sampel air setelah filtrasi dengan membran selulosa asetat adalah negatif.Kata kunci: membran, selulosa asetat, permeabilitas, fluks air 
Pengaruh Dosis Iradiasi Gamma terhadap Pengurangan Bobot Cabai Rawit sebagai Teknologi Pengawetan Makanan Ariyanti, Dhita; Megasari, Kartini; Ridho, Ridho; Adeska, Rieka Arkaninto; Akbar, Sulhamdi
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 2 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i2.17523

Abstract

Food technology as a source of human needs must receive a special attention. Various methods in pursuing food preservation technology are carried out in order to have a long shelf life. This study aims to reduce the percentage of weight loss of cayenne pepper through gamma irradiation technology. The research method used in the process of preserving pepper is gamma exposure irradiation at varying doses (1; 1.5; 2; and 2.5 kGy). Based on the research results, it can be concluded that gamma irradiation at doses of 1; 1.5; 2; and 2.5 kGy affected the weight loss of cayenne pepper. The 8th to 10th days of observation showed the highest percentage of weight loss which ranged from 5.58% to 18.71%, from the original (31.69% without gamma irradiation). Intracellularly, this means that there is a disruption of the fungal membrane in cayenne pepper which causes leakage of sugar and protein from damaged cells. In addition, irradiation disrupts the metabolic function of malate dehydrogenase (MDH) and succinate dehydrogenase (SDH) in the tricarboxylic acid cycle (TCA). This study was tested statistically with a single ANOVA, showing that gamma irradiation affected the weight loss of cayenne pepper as proved by the result of Fcrit (6.725) > Ftable (3.8852).
PEMULIAAN TANAMAN CABAI DENGAN IRADIASI GAMMA Kurniawan, Muhammad Haidar; Ariyanti, Dhita
Scientica: Jurnal Ilmiah Sains dan Teknologi Vol. 2 No. 4 (2024): Scientica: Jurnal Ilmiah Sains dan Teknologi
Publisher : Komunitas Menulis dan Meneliti (Kolibi)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.572349/scientica.v2i4.1191

Abstract

Pemuliaan tanaman cabai dengan iradiasi gamma. Iradiasi gamma telah menjadi salah satu teknik yang digunakan untuk memperoleh variasi sifat serta genetik yang lebih unggul sesuai dengan kebutuhan. Metode pemuliaan tanaman dengan iradiasi gamma diindonesia cukup umum dilakukan oleh badan tenaga nuklir nasional (batan) dalam upaya meningkatkan produktivitas, kualitas, dan ketahanan tanaman trhadap factor lingkungan dan penyakit. Pada penelitian ini melibatkan perlakuan iradiasi pada biji cabai menggunakan irradiator gamma dengan variasi dosis, diikuti dengan pemantauan pertumbuhan tanaman selama periode pengamatan untuk mengkaji dampak iradiasi gamma terhadap jumlah daun, lebar daun dan tinggi tanaman. Berdasarkan pengamatan yang dilakukan menunjukkan dampak signifikan pada tanaman yang diberi iradiasi gamma terhadap pertumbuhan tinggi tanaman, lebar daun, dan jumlah daun pada tanaman cabai. Dosis optimal untuk pemuliaan tanaman cabai berdasarkan pengamatan ialah pada dosis 2 kgy. Pertumbuhan tanaman pada dosis 2 kgy mengalami pertumbuhan yang lebih baik dibanding perlakuan yang lain dari segi jumlah daun, lebar daun dan tinggi tanaman. Iradiasi gamma untuk pemuliaan tanaman berpotensi dapat hasilkan varietas unggul apabila penelitian ini dilakukan secara luas dan berkelanjutan.
STUDI KINETIKA ADSORPSI ION STRONSIUM MENGGUNAKAN ZEOLIT TERPILAR TITANIUM DIOKSIDA Basuki, Kris Tri; Fatuzzahroh, Muni; Ariyanti, Dhita; Saputra, Andri
JURNAL TEKNOLOGI KIMIA MINERAL Vol 1 No 1 (2022): JURNAL TEKNOLOGI KIMIA MINERAL
Publisher : Unit Penelitian dan Pengabdian Kepada Masyarakat Politeknik ATI Makassaar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.236 KB) | DOI: 10.61844/jtkm.v1i1.22

Abstract

Aktivitas pertambangan dapat berpotensi menimbulkan keberadaan Technologically Enhanced Naturally Occuring Radioactive Material (TENORM). Salah satu radionuklida yang terkandung dalam TENORM adalah stronsium pada air produksi sebagai radionuklida terlarut. Jika masuk dalam tubuh, stronsium bisa menyebabkan penyakit kanker tulang, tumor, dan leukimia. Pada penelitian ini stronsium dihilangkan dari larutan dengan teknik adsorpsi secara batch menggunakan zeolit terpilar titanium dioksida. Penelitian ini bertujuan untuk mempelajari kinetika adsorpsi stronsium oleh zeolit terpilar titanium dioksida menggunakan tiga model kinetika, yaitu pseudo orde satu, pseudo orde dua, dan model kinetika Langmuir-Hinshelwood. Berdasarkan studi kinetika yang telah dilakukan maka diperoleh kesimpulan bahwa adsorpsi stronsium oleh zeolit terpilar titanium dioksida mengikuti model kinetika pseudo orde dua dengan nilai k2 sebesar 0,6022 (g/mg.menit) dan qe secara teoritis sebesar 9,5785 mg adsorbat/g adsorben.
The Effect of Gamma Irradiation as A Food Preservation Technology on The Shelf Life and Quality of Fresh-cut Watermelon Adeska, Rieka Arkaninto; Octaviany, Nur; Saragih, Renaldy Bernardo; Andrianti, Retno; Ridho, Ridho; Darojati, Harum Azizah; Ariyanti, Dhita
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 2, December 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i2.9256

Abstract

Several methods for preserving food, particularly fresh fruit, aim to extend shelf life without compromising nutritional value. Food preservation technology utilizing irradiation techniques ensures food safety and stability by eliminating microbes and microorganisms while preserving nutrients. This study investigates the food preservation process using gamma irradiation, analyzes the physical changes in irradiated food over time, and examines the effects of varying gamma irradiation doses on the weight loss and shelf life of fresh-cut watermelon. The research method involves gamma irradiation at doses of 1, 1.5, 2, 2.5, and 3 kGy. Findings indicate that gamma irradiation at these doses affects the weight loss of fresh-cut watermelon. The highest weight loss, approximately 87.36%, was observed at a dose of 3 kGy, indicating significant cellular and membrane damage. Furthermore, high-dose irradiation leads to nutrient degradation and accelerates water loss, resulting in physical changes in fresh-cut watermelon, such as increased softness, wateriness, and odor.Keywords: Food irradiation, Food preservation, Watermelon.
Evaluation of Tartrazine Solution as a Potential Gamma Dosimeter Material Arumbifa, Farhansyah Yunandani; Kurniawan, Deni; Diani, Desalsa Anggoro; Praja, Dika Bhakti; Ajri, Fauziah Ulfah; Dewi, Ariyani Kusuma; Ariyanti, Dhita
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 2, December 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i2.9283

Abstract

Radiation dosimetry plays a crucial role in various fields, including medical, industrial, and environmental applications. Accurate and reliable dosimeters are essential for measuring and controlling radiation exposure. This study aims to evaluate the stability of the food dye tartrazine as a potential gamma radiation dosimeter. The need for accessible and cost-effective dosimetric materials motivates the exploration of tartrazine's capabilities in this regard. This research investigates the response of tartrazine solutions under varying gamma radiation doses (0 to 3.118 kGy) using UV-Vis spectrophotometry to measure absorbance at a wavelength of 424 nm. The results demonstrate a significant decrease in absorbance with increasing radiation doses, indicating decolorization due to oxidative reactions triggered by hydroxyl radicals (OH·) generated during irradiation. Tartrazine, which imparts a yellow color through its diazenedyl (-N=N-) bonds, undergoes bond cleavage upon gamma radiation exposure, resulting in a permanent color change. Further analysis reveals that tartrazine-based dosimeters exhibit optimal stability for less than four weeks. Therefore, tartrazine solution can serve as an effective gamma radiation dosimeter for short-term applications. This study provides a foundation for developing new dosimetric materials, emphasizing the importance of ongoing research to enhance radiation safety and measurement accuracy.Keywords: Dosimeter, Gamma Irradiation, Radiation, Stability, Tartrazine.
Determining Optical Band Gap Energy of Chitosan Biopolymer Film as the Effect of Gamma Rays Irradiation Ariyanti, Dhita; Megasari, Kartini
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10 No 1 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v10i1.8508

Abstract

Dosimeter is one of the apparatus needed by radiation workers. From a dosimeter, radiation workers can control the absorbed dose. This research aims to investigate the properties characteristics of chitosan film for dosimeter usage. Thin-film chitosan polymer blended starch and methyl orange were prepared by phase inversion methods. The spectra were investigated by UV-Visible spectrophotometric in the wavelength range of 400-500 nm, while the optical band gap energy was investigated by the Tauch plot method. The increase in gamma rays irradiation dose affected the optical bandgap energy. It was observed that the value of band gap energy within the direct transition, indirect transition, and direct forbidden transition decreased along with the increase of gamma rays irradiation 3 and 7 kGy doses. These results indicated that gamma-ray irradiation could cause structural defects due to the excitation of non-bonding electrons. These structural defects could reduce the value of band gap energy because of the width localized states.
Co-Authors Adeska, Rieka Arkaninto Adeska, Rieka Arkaninto Ajri, Fauziah Ulfah Akbar, Sulhamdi Andrianti, Retno Ariyani Kusuma Dewi, Ariyani Kusuma Arumbifa, Farhansyah Yunandani Darojati, Harum Azizah Deni Kurniawan, Deni Diani, Desalsa Anggoro Fatuzzahroh, Muni Kris Tri Basuki Kurniawan, Muhammad Haidar Megasari, Kartini Megasari, Kartini Nurul - Widiastuti Octaviany, Nur Praja, Dika Bhakti Ridho, Ridho Ridho, Ridho RR. Ella Evrita Hestiandari Safarina, Nourma Saragih, Renaldy Bernardo