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All Journal INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Jurnal Abdi: Media Pengabdian Kepada Masyarakat Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Unesa Journal of Chemistry
Nita Kusumawati
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Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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PEMANFAATAN LIMBAH KULIT UDANG SEBAGAI BAHAN BAKU PEMBUATAN MEMBRAN ULTRAFILTRASI Nita Kusumawati
INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Vol 13, No 2 (2009): Volume 13, Nomor 2, Agustus 2009
Publisher : LPPM UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ino.v13i2.41

Abstract

AbstractThis research was aimed to study the made of chitosan membrane.The chitosan membrane was made from industrial waste of prawn packingfactory. The prawn husk was extracted to become chitin before it was thentransformed to chitosan. In order to make a membrane, the chitosan wasmixed with an acetic acid solution using magnetic stirrer. The mixed ofchitosan and an acetic acid solution was doing for 24 hour to make sure thesolution are homogenic. After that, chitosan solution was stored to glassplate 10x10 cm. The glass plate that have been with chitosan solution thendried for 48 hours. A Chitosan Membrane that have made was keeped withthe plate until it used.Keywords: chitosan membrane, industrial waste
PEWARNAAN BATIK TULIS MENGGUNAKAN PEWARNA ALAMI DAN BAHAN FIKSASI KITOSAN PADA KELOMPOK BATIK TULIS ASIH MATAHARI KOTA BLITAR Dina Kartika; Siti Tjahjani; Nita Kusumawati
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v4n2.p55-58

Abstract

Development on batik production processes inovation including dyeing process and pattern design become one of important factors that increase selling and production. Blitar city has unique batik product namely koi fish batik. The product is less popular among others batik from different city, so training on dyeing process with natural dye are essential to do. The objective of the training were to improve skill of dyeing process. The training for batik tulis group partner which Asih Matahari group included introduction of natural dye for batik dyeing and introduction of eco friendly fixation agent for dyeing process and use of padder tools to improve efficiency of dye coating process. The result of the training showed that batik group can use natural dye and do the dyeing with fixation agent Chitosan . Response of the training member showed high enthusiasm and interested toward training..
Penggunaan Bioinsektisida dari Ekstrak Daun Tephrosia Vogelii untuk Mengatasi Hama Wereng di Desa Tanggaran, Trenggalek Yovi Ocktaviani; Sigit Trimayanto; Sovranita Ramadhani Setiawan Putri; Nita Kusumawati
Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) 2018: Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (881.245 KB)

Abstract

Petani di desa Tanggaran sering dirugikan karena tanaman padi diserang hama wereng. Penggunaan pestisida sintetik seperti kabofuran telah banyak memberikan dampak negatif terhadap manusia, maka dari itu penelitian ini bertujuan untuk mengetahui kemampuan ekstrak daun Tephrosia vogelii dengan pelarut etil asetat sebagai bionsektisida yang ramah lingkungan dalam mengatasi hama wereng (N. lugens) pada tanaman padi. Pada penelitian ini, pengujian dilakukan dengan metode residu pada bibit padi berumur kurang lebih 2 minggu atau 14 hari. Pengujian dilakukan pada 4 macam konsentrasi larutan berbeda yaitu 0 mg/L (sebagai kontrol), 10 mg/L, 100 mg/L, dan 1000 mg/L. Pengujian dilakukan dengan 2 kali pengulangan (duplo). Parameter yang diamati adalah mortalitas hama wereng (N. lugens). Hasil pengujian menunjukkan rata-rata mortalitas hama wereng dari konsentrasi ekstrak paling kecil berturut-turut adalah 6.6667%, 28.5714%, 46.4286%, dan 93,3333%. Analisis diolah menggunakan perhitungan LC50 (analisis probit) dengan metode persamaan garis linier pada aplikasi Microsoft Office Exel. Berdasarkan perhitungan, nilai LC50 diperoleh sebesar 1,8148 mg/L. Artinya nilai LC50 ekstrak daun T. vogelii berada pada tingkat toksisitas sangat toksik.
Karakterisasi Abu Sekam Padi dengan Menggunakan XRD samik samik; Nita Kusumawati; Maria Monica Sianita; Dina Kartika Maharani; Amalia Putri Purnamasari; Mukhlash Imaduddin; M Iqbal Al Ghifari
Unesa Journal of Chemistry Vol 11 No 3 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (781.735 KB) | DOI: 10.26740/ujc.v11n3.p153-159

Abstract

Rice husk ash is a material that mostly contains silica (SiO2). Silica can be used as a raw material for various industries. This research is an experimental study, covering the synthesis of rice husk ash with various calcination temperatures, namely 800 oC, 900 oC, and 1000 oC. The purpose of this study was to identify the type of solid and crystalline phases of RHA so that the results of this study could be used as a basis for further research on the use of RHA. The results of the synthesis produced four types of samples, namely samples calcined at a temperature of 800 oC (coded S-800), calcined at 900 oC was gray (S-900 A), calcined at 900 oC was white (S-900 P), and samples were calcined at a temperature of 1000 oC (S-1000). Characterization using X-Ray Diffraction (XRD) showed that all samples included crystalline solids with the tridymite crystal phase and cristobalite were detected in samples S-800, S-900 P, S-900 A, and S-1000. Cristobalite and tridymite are silica mineral polymorphs with the same chemical formula as quartz, SiO2, but have different crystal structures. The percentage of crystallinity of the sample was calculated by comparing the sample which has the highest peak intensity (S-1000). The crystallinity results for S-1000, S-900 P, and S-900 A were 100%, 96%, 79%, and 32%. The lower the calcination temperature, the smaller the percentage of crystallinity. Keywords: rice husk ash, calcined, silica, XRD, crystalline solid
Co-Authors Amalia Putri Purnamasari Dina Kartika DINA KARTIKA MAHARANI M Iqbal Al Ghifari Maria Monica Sianita Mukhlash Imaduddin Samik Samik Sigit Trimayanto Siti Tjahjani Sovranita Ramadhani Setiawan Putri Yovi Ocktaviani