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All Journal Jurnal Pendidikan Vokasi INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni International Journal of Renewable Energy Development Jurnal Penelitian Pendidikan Matematika dan Sains Matematika dan Sains Science and Technology Indonesia Indonesian Journal of Chemistry Communications in Science and Technology Martabe : Jurnal Pengabdian Kepada Masyarakat Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmu Hukum KYADIREN Jurnal Abdi: Media Pengabdian Kepada Masyarakat Sains dan Matematika International Journal of Science and Society (IJSOC) Abimanyu: Journal of Community Engagement Jurnal Pijar MIPA International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Molekul: Jurnal Ilmiah Kimia Journal of Engineering and Technological Sciences
Nita Kusumawati
Jurusan Kimia FMIPA Unesa
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Peningkatan Kualitas Pembelajaran Kimia Dasar I Pokok Bahasan Kesetimbangan Kimia dengan Model Pembelajaran Kooperatif Tipe Jigsaw Rinaningsih, ; Titik Taufikurohmah, ; Nita Kusumawati,
Jurnal Penelitian Pendidikan Matematika dan Sains Vol 15, No 1 (2008)
Publisher : Jurnal Penelitian Pendidikan Matematika dan Sains

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Abstract

Penelitian Tindakan Kelas ini dilakukan dengan tujuan untuk: (1). Mengembangkan perangkat pembelajaran Kimia Dasar I dengan pokok bahasan Kesetimbangan Kimia di tingkat Universitas, yang bercirikan model pembelajaran kooperatif tipe Jigsaw, dan (2) Mengetahui kualitas proses dan hasil belajar kimia dasar melalui penerapan perangkat pembelajaran kooperatif tipe Jigsaw. Penelitian dilakukan melalui dua tahap, yaitu (1) Tahap Pengembangan Perangkat, dan (2) Tahap Pembelajaran nyata. Perangkat Pembelajaran yang dikembangkan adalah Materi Ajar, Rencana Pembelajaran, Lembar Kegiatan Siswa, dan Instrumen Hasil Belajar. Hasil penelitian menunjukkan : (1) Aktivitas dosen dan mahasiswa dalam pembelajaran menunjukkan kegiatan pembelajaran yang berpusat pada mahasiswa, hasil rata-ratanya sudah baik, (2). Mahasiswa melaksanakan kegiatan keterampilan kooperatif selama proses pembelajaran, (3) Kemampuan dosen secara keseluruhan dalam mengelola pembelajaran dengan menggunakan model pembelajaran kooperatif tipe Jigsaw sudah cukup baik, (4) Respon mahasiswa terhadap model dan perangkat pembelajaran kooperatif tipe Jigsaw pada umumnya merasa senang, merupakan hal  baru dan berminat untuk mengikuti pembelajaran selanjutnya dengan model yang sama, (5) Hasil yang dicapai mahasiswa dalam belajar dengan menggunakan model pembelajaran kooperatif tipe Jigsaw sangat baik dan konsisten dengan adanya peningkatan proporsi jawaban benar mahasiswa. Secara umum Pembelajaran Kimia Dasar I pokok bahasan Kesetimbangan Kimia dengan menggunakan model pembelajaran kooperatif tipe Jigsaw, dapat meningkatkan kualitas perkuliahan dan prestasi belajar mahasiswa.
UJI KESTABILAN KALIUM FERAT Nur Hayati, ; Nita Kusumawati, ; Bertha Yonata,
Matematika dan Sains Vol 16, No 1 (2009)
Publisher : Matematika dan Sains

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Abstract

The synthesis of potassium ferrate and the optimazion as green chemistry degradator had been studied. The purpose of research was to study the influence of pH and reaction time to potassium ferrate stability. This research was started by synthesis and characterization of potassium ferrate. Some parameters influencing degradation process by ferrate ion, such as pH and molar reaction time have been studied, and the decomposition result was quantization by spectrophotometry UV-Vis. Based on the XRD spectra, it was found that the solid phase potassium ferrate had a tetrahedral structure with a space group of D2h(Pnma). The potassium ferrate solution had a maximum stability at pH 9-10. Decomposition result of ferrate indicated that kinetic constant was stable at spanning time 24-72 hours.2h(Pnma). The potassium ferrate solution had a maximum stability at pH 9-10. Decomposition result of ferrate indicated that kinetic constant was stable at spanning time 24-72 hours.
PEMBUATAN DAN PEMANFAATAN KALIUM FERRAT DALAM PENGOLAHAN LIMBAH ZAT PEWARNA PROCIAN RED MX 8B Yani Ekwandi Wibowo, ; Nita Kusumawati,
Matematika dan Sains Vol 16, No 2 (2009)
Publisher : Matematika dan Sains

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Abstract

The purpose of this research is to investigate the degradation of procion red MX 8B contain pH effect and molar ratio to degradation it using pottasium ferrate. Synthesis and characterization of pottasium ferrate were performed before it was reacted with procian red MX 8B. The aqueous stability of pottasium ferrate at various pH values and some parameters which influenced the degradation process such as pH and molar ratio of dye:Fe(VI) have been studied. The progress of reaction was followed by UV-Vis spectrophotometry. The aqueous reaction of ferrate with procian red MX 8B was also investigated with a molar ratio of dye:Fe(VI) in the range of 1:1 – 1:5. The results showed that pottasium ferrate solution had a maximum stability at pH 9-10. The optimal pH for degradation of procian red MX 8B was 9.2 and molar ratio dye:Fe(VI) was 1:1. At this pH and molar ratio dye:Fe(VI) approximately 96.5% were degraded after 30 minutes. Degradation process of procian red MX 8B using pottasium ferrate was marked by the shifting of the wave lenght which it has shifted from 545 nm to 296.2 nm.
STUDI PENGARUH TEKANAN OPERASI DAN KOMPOSISI BAHAN PENYUSUN TERHADAP PERMEABILITAS MEMBRAN ULTRAFILTRASI UNTUK Nita Kusumawati,
Matematika dan Sains Vol 17, No 1 (2010)
Publisher : Matematika dan Sains

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Abstract

Detergent is a kind of liquid waste who can give a dangerous effect to environment. The increasing of detergent uses can make eutrofication effect that can block the sunsine dan decrease O2 in the water. A conventional Detergent waste treatment that have been doing all this time, such as aeration, adsorption with active carbon or bentonite and coagulation with salt of carbonate and sulfate give unstatisfied result cause of small reduction power and high operational cost. Because of that, membrane technology hoped can be alternative technology which is easier and cheaper for detergent separation. In this experiment, the ultrafiltration membrane is made of chitosan that was dissolved in formic acid with variation composition of chitosan 1-3 gram in 100 mL of solvent which after that the membrane was applicated to "dead-end" machine to testing membrane permeability in operational pressure 1-3 atm.. The result of experiments showed that increasing of operational pressure make the membrane permeability ascent. But, in the other side, increasing of chitosan composition make this ultrafiltration membrane permeability descent. The optimum conditions was obtained when membrane with chitosan composition 3 gram was applicated in operational pressure 3 atm, which is the value of fluks (permeability) reach out for 30,80 L/m2 day.2 in the water. A conventional Detergent waste treatment that have been doing all this time, such as aeration, adsorption with active carbon or bentonite and coagulation with salt of carbonate and sulfate give unstatisfied result cause of small reduction power and high operational cost. Because of that, membrane technology hoped can be alternative technology which is easier and cheaper for detergent separation. In this experiment, the ultrafiltration membrane is made of chitosan that was dissolved in formic acid with variation composition of chitosan 1-3 gram in 100 mL of solvent which after that the membrane was applicated to "dead-end" machine to testing membrane permeability in operational pressure 1-3 atm.. The result of experiments showed that increasing of operational pressure make the membrane permeability ascent. But, in the other side, increasing of chitosan composition make this ultrafiltration membrane permeability descent. The optimum conditions was obtained when membrane with chitosan composition 3 gram was applicated in operational pressure 3 atm, which is the value of fluks (permeability) reach out for 30,80 L/m2 day.
PEMBUATAN DAN UJI KEMAMPUAN MEMBRAN KOMPOSIT KITOSAN-PVA UNTUK PEMISAHAN ZAT WARNA RHODAMIN-B Elvina Rossa, ; Nita Kusumawati,
Matematika dan Sains Vol 18, No 2 (2011)
Publisher : Matematika dan Sains

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The aims of research were to know physical characteristic and performance of the chitosan-PVA composite membrane in separating rhodamin-B color with various PVA concentrations and operational pressure. The physical characteristic of membrane tested were tensil strength, stroke, morphology, and porous size. Membrane performance measured were flux value and rejection. Results showed that membrane had high load and high stroke at high concentration of PVA. Load value and stroke value obtained were 0.680-5.646 kgf and 1-9.25%, respectively. Result of SEM analysis showed that membrane produced was microfiltration membrane with porous size of 0.1-1.6 µm. The best flux value was resulted by R-1 membrane at pressure of 5 kg/cm2 namely 27.575 L/m2.hour. While the highest rejection coeficient value was resulted by membrane R-5 at pressure of 1 kg/cm2 namely 91.136%. The rejection coeficient value increased with increasing of PVA concentration, while it decreased with increasing of operational pressure.2 namely 27.575 L/m2.hour. While the highest rejection coeficient value was resulted by membrane R-5 at pressure of 1 kg/cm2 namely 91.136%. The rejection coeficient value increased with increasing of PVA concentration, while it decreased with increasing of operational pressure.
IPTEKS BAGI MASYARAKAT USAHA BUDIDAYA LELE “TIRTA ANUGERAH” MAOSPATI MAGETAN DAN UMKM OLAHAN PANGAN PERMATA ALAMI MADIUN Kusumawati, Nita; Muslim, Supari; Wahini, Meda
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol 1, No 2 (2016)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v1n2.p135-141

Abstract

Pada kegiatan ini telah dilakukan upaya pemberdayaan UMKM budidaya dan olahan pangan berbahan dasar lele, melalui introduksi teknologi pembuatan pellet dan pelatihan peningkatan citarasa produk abon dan nugget lele. Introduksi teknologi pembuatan pellet lele yang dilakukan melalui penggunaan mesin pembuat pellet lele telah berhasil meningkatkan produktivitas UMKM Budidaya Lele Tirta Anugerah Magetan. Peningkatan produktivitas usaha tersebut dikarenakan UMKM Tirta Anugerah telah mampu membuat sediaan pakan lele yang memiliki masa simpan 2-3 bulan, dengan panjang 1 cm dan diameter sebesar 3 mm. Tidak hanya itu, UMKM Tirta Anugerah juga telah mampu memproduksi pellet lele dengan ukuran panjang <1 cm, yaitu 1 mm, 2 mm, 4 mm dan diameter pellet 3 mm, yang diperuntukkan untuk anakan lele. Sementara itu, pelatihan peningkatan citarasa produk abon dan nugget lele UMKM Permata Alami telah mampu meningkatkan tingkat kesukaan terhadap kedua produk olahan pangan tersebut.
PELATIHAN BUDIDAYA CACING TANAH (Lumbricus rubellus) BAGI PARA TANI DESA SUMBERDUKUN, NGARIBOYO, MAGETAN Rusmini, Rusmini; Kusumawati, Nita; Prahara, Mirwa Adi; Wikandari, Prima Retno
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol 1, No 2 (2016)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v1n2.p114-120

Abstract

Telah dilakukan kegiatan pelatihan budidaya cacing tanah (Lumbricus rubbelus) kepada para tani Desa Sumberdukun, Kecamatan Ngariboyo, Kabupaten Magetan sebagai upaya pengembangan sumber daya daerah. Metode yang digunakan berupa kegiatan pelatihan dengan pemberian materi dan praktek serta pendampingan dan monitoring dari tim pelaksana PKM. Kegiatan pelatihan diamati dengan lembar observasi keterlaksanaan pelatihan, lembar observasi ketrampilan berbudidaya, dan angket respon peserta. Kegiatan PKM diakhiri dengan pemberian bibit cacing tanah sebagai modal untuk memulai berbudidaya. Hasil PKM melaporkan bahwa keterampilan peserta dalam berbudidaya cacing tanah sudah ditunjukkan mulai persiapan media, pembuatan kandang, pembuatan pakan, dan tehnik panen. Seluruh peserta pelatihan tertarik dan menyatakan bahwa pelatihan budidaya cacing tanah ini bermanfaat meskipun ada 20% peserta yang menyatakan pernah mendapatkan pelatihan serupa dan menyatakan jika budidaya cacing tanah tidak mudah dilakukan. Hasil pendampingan dan monitoring menunjukkan bahwa 9 peserta (45%) mengalami perkembangan dalam berbudidaya cacing tanah dan 11 peserta (55%) belum berhasil.
IPTEKS BAGI MASYARAKAT KELOMPOK USAHA TANI AGRO JAMUR MA’ISYATANA MADIUN Muslim, Supari; Bahar, Asrul; Kusumawati, Nita
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol 1, No 2 (2016)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v1n2.p125-129

Abstract

 Secara umum, kegiatan ini bertujuan untuk meningkatkan pendapatan usaha budidaya jamur tiram yang dikembangkan oleh Agro Jamur Ma’isyatana (AJM) Madiun. Secara lebih khusus, kegiatan ini diarahkan untuk dapat meningkatkan produktivitas dan minimalisasi gagal panen pada budidaya jamur tiram, melalui introduksi teknologi, khususnya pada tahapan sterilisasi medium tanam (baglog) jamur tiram. Selain itu, pada kegiatan ini juga telah dilakukan upaya pembuatan Standar Operasional Prosedur (SOP) budidaya jamur tiram dengan teknologi sederhana. Introduksi teknologi pada tahapan sterilisasi baglog jamur tiram telah dilakukan melalui introduksi mesin boiler sterilisator. Melalui introduksi mesin boiler – sterilisator, didapatkan peningkatan kapasitas produksi jamur tiram sebesar 100%, dimana dengan menggunakan drum bekas, proses sterilisasi dapat dilakukan terhadap 100 buah baglog per proses. Sementara, setelah menggunakan mesin boiler-sterilisator, proses sterilisasi dapat dilakukan terhadap 200 buah baglog per prose Secara umum, kegiatan ini bertujuan untuk meningkatkan pendapatan usaha budidaya jamur tiram yang dikembangkan oleh Agro Jamur Ma’isyatana (AJM) Madiun. Secara lebih khusus, kegiatan ini diarahkan untuk dapat meningkatkan produktivitas dan minimalisasi gagal panen pada budidaya jamur tiram, melalui introduksi teknologi, khususnya pada tahapan sterilisasi medium tanam (baglog) jamur tiram. Selain itu, pada kegiatan ini juga telah dilakukan upaya pembuatan Standar Operasional Prosedur (SOP) budidaya jamur tiram dengan teknologi sederhana. Introduksi teknologi pada tahapan sterilisasi baglog jamur tiram telah dilakukan melalui introduksi mesin boiler sterilisator. Melalui introduksi mesin boiler – sterilisator, didapatkan peningkatan kapasitas produksi jamur tiram sebesar 100%, dimana dengan menggunakan drum bekas, proses sterilisasi dapat dilakukan terhadap 100 buah baglog per proses. Sementara, setelah menggunakan mesin boiler-sterilisator, proses sterilisasi dapat dilakukan terhadap 200 buah baglog per prose Secara umum, kegiatan ini bertujuan untuk meningkatkan pendapatan usaha budidaya jamur tiram yang dikembangkan oleh Agro Jamur Ma’isyatana (AJM) Madiun. Secara lebih khusus, kegiatan ini diarahkan untuk dapat meningkatkan produktivitas dan minimalisasi gagal panen pada budidaya jamur tiram, melalui introduksi teknologi, khususnya pada tahapan sterilisasi medium tanam (baglog) jamur tiram. Selain itu, pada kegiatan ini juga telah dilakukan upaya pembuatan Standar Operasional Prosedur (SOP) budidaya jamur tiram dengan teknologi sederhana. Introduksi teknologi pada tahapan sterilisasi baglog jamur tiram telah dilakukan melalui introduksi mesin boiler sterilisator. Melalui introduksi mesin boiler – sterilisator, didapatkan peningkatan kapasitas produksi jamur tiram sebesar 100%, dimana dengan menggunakan drum bekas, proses sterilisasi dapat dilakukan terhadap 100 buah baglog per proses. Sementara, setelah menggunakan mesin boiler-sterilisator, proses sterilisasi dapat dilakukan terhadap 200 buah baglog per prose
Effect of natural dye combination and pH extraction on the performance of dye-sensitized photovoltaics solar cell Estiningtyas, Indri Wasa; Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari; Rahayu, Nunik Tri; Safitri, Riska Nur; Zakiyah, Nafisatus; Fachrirakarsie, Fadlurachman Faizal
International Journal of Renewable Energy Development Vol 12, No 6 (2023): November 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.56172

Abstract

Dyes are significant components in Dye Sensitized Solar Cell (DSSC) performance because they act as photosensitizers. Natural dye-based DSSC system fabrication innovations continue to be produced in an effort to improve DSSC performance efficiency. In this study, a DSSC system was developed using double components of natural dyes as natural photosensitizers to enhance DSSC efficiency. This method of making natural dye-based DSSC uses a combination of dye extracts from two different dye sources that have the potential as natural photosensitizers in DSSC. The research aims to investigate the impact of the combined use of two natural dyes and pH variations on DSSC performance. DSSC performance measurements encompass the short-circuit current (Isc), open-circuit voltage (Voc), and DSSC efficiency parameters. The obtained results indicate efficiency values for dyes (a) sappan wood/ethanol and turmeric/methanol; (b) turmeric/methanol and beetroot/ethanol; and (c) beetroot/ethanol and turmeric/distilled water. At neutral pH, the efficiency values are 2.09%, 2.10%, and 2.19%, respectively. Meanwhile, at acidic pH of 2.59%; 2.39%; and 2.71%. Notably, the dye efficiency values at acidic pH surpass those found at neutral pH conditions. The highest efficiency is observed in the combination of dye (c) beetroot/ethanol and turmeric/distilled water with efficiency reaching 2.71% at acidic pH.
Optimization Thickness of Photoanode Layer and Membrane as Electrolyte Trapping Medium for Improvement Dye-Sensitized Solar Cell Performance Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari; Hafidha, Qonita Arky; Cahyani, Sinta Anjas; Fachrirakarsie, Fadlurachman Faizal
Science and Technology Indonesia Vol. 9 No. 1 (2024): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.1.7-16

Abstract

Dye-Sensitized Solar Cells (DSSC) are photovoltaic devices that contain a dye that acts as a solar light acceptor. The use of dyesensitized solar cells to solve increasing energy demand and environmental problems still results in low efficiency values. In this study, optimization of DSSC components was carried out to increase DSSC efficiency by varying the thickness of the titanium dioxide (TiO2) semiconductor photoanode layer, polyvinylidene fluoride (PVDF) trap electrolyte membrane, and polyvinylidene fluoride nanofiber (PVDF NF) to obtain the optimum thickness. Scanning Electron Microscope (SEM) results of membrane thickness variation and titanium dioxide (TiO2) semiconductor photoanode coating showed the formation of nanofiber fibers composed of three-dimensional, porous, and diameter networks connected to the PVDF NF membrane. The increase in density and decrease in pore size, along with an increase in thickness and cracking as the TiO2 photoanode semiconductor layer increases, affect the electron transport rate of the DSSC. The higher particle density level will inhibit the electron transport rate, so it can reduce the efficiency of DSSC. The optimum thickness of the TiO2 semiconductor layer and PVDF NF electrolyte membrane of 0.20 mm and 0.35 mm can produce values, voltage, fill factor current density, and electrical efficiency of 500 mV, 2.7 x 10−3 mA.cm−2, 1.80%, and 2.40%, respectively.
Co-Authors A'yun, Qurrota Ach. Yasin Al Hafidl, Achmad Naufal Ashabul Kahfi Ashabul Kahfi, Ashabul Asrul Bahar Auliya, AR. Sella Berlian, Binar Bertha Yonata Cahyani, Sinta Anjas Dewi Saputri, Ratih Dina Kartika Maharani Dzulkarnain, Shod Abdurrachman Elvina Rossa Erina Rahmadyanti 2) Estiningtyas, Indri Wasa Fachrirakarsie, Fadlurachman Faizal Fatma Listiandari, Intan Hafidha, Qonita Arky Hapsari, Veronica Lita Hasanah Jusman, Nur Hery Widijanto Indah, Novita K. Isyrak, Luthfiyah Iwan Permadi Khafidlah, Ianatul Kurniawan, Muhammad Ridho Hafid Mahanani Tri Asri Maria Monica Sianita Maria Monica Sianita Basukiwardojo MEDA WAHINI Monica, Maria Mugiyanto, Agus Nabila, Mutiara Azfa Nafisatus Zakiyah Naulia, Kaila Nuniek Herdyastuti Nur Hayati Nurrohman Sidiq, Muhammad Nurzulla, Weka Firda Rizki OCKTAVIANI, YOVI Phra Harini, Novitasari Dian Pinto, Floriana A. Pirim Setiarso Prahara, Mirwa Adi Prima Retno Wikandari Putri, Marinda Mayliansarisyah Putri, Sovranita Ramadhani Setiawan Rahayu, Nunik Tri Rahmadyanti, Erina Rahmawati, Khofifatul Ramadanti, Awanda Halida Restuti, Hermasari Rhamdiyah, Fastabiqul Khairati Rinaningsih Riska Nur Safitri, Riska Nur Rita Ismawati Rudi Setiawan, Ahmad Rus, Ridwan Che Rusmini Rusmini Safitri, Rizka Dwi Samik Samik Sanjaya, IGM Sari Edi Cahyaningrum Setiawan, Ferdiansyah Sinta Anjas Cahyani Sri Handajani Supari Muslim Supari Muslim Sutoyo, Suyatno Titik Taufikurohmah TRIMAYANTO, SIGIT Yani Ekwandi Wibowo Yulianto, Egy Henry Zakiyah, Nafisatus