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All Journal Jurnal Ilmu Dasar BERKALA SAINSTEK Pelita Perkebunan UNEJ e-Proceeding ALCHEMY Jurnal Penelitian Kimia J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Social, Humanities, and Educational Studies (SHEs): Conference Series Jurnal Pengabdian Masyarakat IPTEKS JIIP (Jurnal Ilmiah Ilmu Pendidikan) Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) JOLLT Journal of Languages and Language Teaching Journal of Agriculture and Applied Biology Journal of Agriculture and Applied Biology ( JAAB) Studies in English Language and Education Indonesian Chimica Letters InSTEM al Kimiya : Jurnal Ilmu Kimia dan Terapan Jurnal Ilmiah Bisnis, Manajemen, dan Akuntansi
Dwi Indarti
Jurusan Kimia Fakultas MIPA, Universitas Jember
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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PENGARUH PENAMBAHAN SURFAKTAN ANIONIK SODIUM DODESIL SULFAT TERHADAP KARAKTERISTIK MEMBRAN SELULOSA ASETAT Buana, Eka Surya; Indarti, Dwi; Asnawati, Asnawati
BERKALA SAINSTEK Vol 2, No 1 (2014)
Publisher : My Home

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Abstract

Penelitian ini telah dilakukan tentang pengaruh penambahan surfaktan anionik sodium dodesil sulfat terhadap: sifat fisik membran selulosa asetat (densitas, derajat swelling), sifat kimia membran selulosa asetat (IR, sudut kontak), kinerja membran selulosa asetat (koefisien permeabilitas dan koefisien rejeksi dekstran). Selulosa asetat (CA) dimodifikasi dengan menambahkan SDS (sodium dodecl sulphate) yang befungsi sebagai agen pembentuk pori dan meningkatkan sifat hidrofilisitas membran. Preparasi membran selulosa asetat dilakukan dengan metode inversi fasa. Modifikasi membran selulosa asetat dilakukan melalui dua tahap, meliputi: Preparasi membran selulosa asetat dengan menambahkan SDS ke dalam larutan polimer membran dan karakterisasi membran selulosa asetat. Hasil penelitian ini menunjukkan membran hasil modifikasi dengan komposisi 2% SDS, 16% CA mempunyai pori yang lebih rapat. Hasil pengukuran kerapatan, derajat swelling, Uji FTIR, sudut kontak fluks dan rejeksinya berturut-turut sebagai berikut: 0,3916 gr/cm3, 4, 96 %, hasil uji IR menunjukkan adanya interaksi ikatan van der waals antara CH3-CH3 dan ikatan hidrogen antara OH-SO4,, 62o(sedikit hidrofilik), 7,6191 (L/m2.jam) dan 65,02 %. Kata Kunci: Selulosa Asetat, SDS, Sudut Kontak, Inversi Fasa
PENGARUH VARIASI KONSENTRASI DAN pH ASAM LARUTAN SODIUM DODESIL SULFAT TERHADAP PROSES PEMISAHANNYA PADA MEMBRAN SELULOSA ASETAT Farida, Elis Nur; Indarti, Dwi; Oktavianawati, Ika
BERKALA SAINSTEK Vol 2, No 1 (2014)
Publisher : My Home

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Penelitian ini telah dilakukan dengan mempelajari pengaruh konsentrasi dan pH larutan asam surfaktan anionik natrium lauril sulfat terhadap pemisahanya pada membran ultrafiltrasi terhadap: kinerja membran selulosa asetat (fluks NaLS dan rejeksi NaLS). Preparasi membran selulosa asetat dilakukan dengan metode inversi fasa. Konsentrasi NaLS yang digunakan di bawah KKM (0,001-0,003M) dan pH asam(3-6). Hasil pengukuran KKM pada pH 3, 4, 5, 6 adalah sebagai berikut: 0,00398 M; 0,00469 M; 0,00571 M; 0,00669 M. Hasil uji kinerja membran tertinggi fluks, koefisien rejeksi dan massa teradsorb berturut-turut adalah sebagai berikut: NaLS 0,001 M pH 3 0,855 (L/m2jam); 0,003 M pH 6 99,646 %: 0,0408 g. Kata kunci: natrium lauril sulfat, konsentrasi kritis misel, selulosa asetat
Optimalisasi Adsorpsi Zat Warna Rhodamin B Pada Hemiselulosa Dalam Sistem Dinamis Putri, Sella August; Asnawati, A.; Indarti, Dwi
BERKALA SAINSTEK Vol 7 No 1 (2019)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v7i1.9912

Abstract

Adsorben hemiselulosa digunakan sebagai alternatif untuk adsorpsi zat warna tekstil Rhodamin B. Parameter penelitian seperti massa adsorben dan pH larutan influen telah dilakukan untuk memperoleh kapasitas adsorpsi adsorben hemiselulosa. Banyaknya zat warna Rhodamin B yang teradsorpsi pada adsorben hemiselulosa mengalami peningkatan dengan bertambahnya massa adsorben dan pH larutan influen mendekati pH 7. Hasil penelitian dikaji dengan model Thomas. Hasil penelitian menunjukkan bahwa adsorben hemiselulosa dapat menyerap zat warna Rhodamin B paling baik pada massa adsorben 0,5 gram dan pH larutan 7,34, dengan banyaknya zat warna Rhodamin yang diserap oleh adsorben hemiselulosa sebesar 0,047 mg/g. Hasil penelitian adsorpsi ini menunjukkan bahwa adsorben hemiselulosa dapat digunakan sebagai salah satu alternatif dalam pengurangan zat warna Rhodamin B dalam larutan. Kata Kunci: Adsorben, hemiselulosa, rhodamin B, adsorpsi.
KELOMPOK TERNAK SAPI POTONG Firdaus, Muhammad; Indarti, Dwi
Jurnal Pengabdian Masyarakat IPTEKS Vol 4, No 2 (2018): JURNAL PENGABDIAN MASYARAKAT IPTEKS
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.99 KB) | DOI: 10.32528/pengabdian_iptek.v4i2.1843

Abstract

Pengabdian ini berjudul ?PKM Kelompok Ternak Sapi Potong di Desa Tanjung Rejo, Kecamatan Wuluhan, Kabupaten Jember, Provinsi Jawa Timur?. Permasalahan utama berkaitan dengan ketersediaan pakan yang dihadapi usaha ternak sapi potong ini adalah: (1) menjaga ketersediaan pakan hijauan, khususnya  di musim penghujan, (2) membuat pakan dari bahan di sekitar mereka. Berdasar permasalahan tersebut, maka solusi yang ditawarkan  adalah penyuluhan dan atau praktek tentang: (1) pemanfaatan sela-sela pekarangan/sawah yang dimiliki dengan menanam rumput terutama rumput gajah, (2) pembuatan fermentasi jerami untuk mengganti pakan hijauan, (3) pembuatan pakan konsentrat. Metode yang dipakai dalam  pencapaian  tujuan  tersebut adalah : (1) Metode Pendekatan Personal kepada ketua dan anggota kelompok, (2) Metode Penyuluhan, dan (3) Metode Pendekatan Praktek. Hasilnya, Tim Pelaksana Pengabdian Kemitraan Masyarakat (PKM) telah melakukan penyuluhan dan praktek sehingga peternak mampu:  (1) memanfaatkan di sela-sela pekarangan/sawah yang dimiliki dengan menanam rumput terutama rumput gajah, (2) pembuatan fermentasi jerami untuk mengganti pakan hijauan, (3) membuat pakan konsentrat dengan menggunakan bahan baku yang ada di sekitar mereka dengan penambahan probiotik, untuk menghasilkan pakan ternak berkualitas  tinggi.Kata Kunci: PKM, Ternak, Sapi Potong, Pakan
Filtration of Protein in Tempe Wastewater Using Cellulose Acetate Membrane Dwi Indarti; Badrut Tamam Ibnu Ali; Tri Mulyono
UNEJ e-Proceeding 2016: Proceeding The 1st International Basic Science Conference
Publisher : UPT Penerbitan Universitas Jember

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Abstract

The protein content in the wastewater tempe high enough. Filtration of tempe wastewater  can use cellulose acetate membranes. Type cellulose acetate membranes used is ultrafiltration membranes. Pressure and protein concentration influenced on the flux, rejection, and fouling resistance. Membrane characteristics included flux, pore asymmetries, time compaction and permeability coefficient. The results showed that fouling resistance is influenced by the pressure and concentration of the feed solution. The higher the pressure will cause increased fouling resistance, while higher concentrations will cause fouling resistance decreases. The pressure and the higher the concentration of protein causes rejection decreasedFiltration of Protein in Tempe Wastewater Using Cellulose Acetate Membrane
Design of System Batch Injection Analysis (BIA) for Monitoring the Production of Alcohol (II) Tri Mulyono; Dwi Indarti; Rizqon Rizqon
UNEJ e-Proceeding 2016: Proceeding The 1st International Basic Science Conference
Publisher : UPT Penerbitan Universitas Jember

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Abstract

The main purpose of this work is to report the development of batch injection analysis (BIA) for monitoringvthe production of Alcohol. The activities focus on the concepts BIA and design of syringe pump and stepper pump.vBoth pumps were adjusted flow-rate and controlled by computer with microcontroller Arduino Uno R module usingvsoftware Labview 2013 . The results showed that both pump have a good performance. This was marked by relation coefficient 0,99 and a little variance < 5%.
Cellulose Acetate Membranes characters Due To Additions Additive Monosodium Glutamate (MSG) Dwi Indarti; I Nyoman Adi Winata; Heny Yunita Novianti
Jurnal ILMU DASAR Vol 14 No 1 (2013)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.762 KB) | DOI: 10.19184/jid.v14i1.479

Abstract

This study purposed to determine the effect of MSG on the character of cellulose acetate membranes. This membrane preparation using phase inversion technique. The results showed that the higher the concentration of MSG, which is the character of membrane permeability coefficients and higher water flux, whereas for the character of the membrane density test and 100-200 kDa dextran rejection further down. To test the FTIR proved that there are no additives or solvents are trapped in a membrane. Keywords : Cellulose Acetate, phase inversion, MSG, FTIR  
VARIATION OF SOLVENT COMPOSITION EFFECT ON PERFORMANCE AND PHYSICOCHEMICAL PROPERTIES OF CELLULOSE ACETATE MEMBRANE Dwi Indarti; Nanda Widayanti; Neran Neran
Jurnal ILMU DASAR Vol 13 No 1 (2012)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.462 KB) | DOI: 10.19184/jid.v13i1.631

Abstract

Performance Cellulose acetate (CA) were characterized by the variation of solvent composition (acetone and formic acid) with a mole ratio of 5/10; 6/9; 7/8; 8.7; and 9/6 and the addition of additives MSG 6%. Characterization was conducted on the membrane performance (flux, permeability coefficient,% rejection) and physicochemical properties include density test and analysis of membrane structure by FTIR. Membrane solvent variation results, 6/9 has the lowest density values. Results flux, permeability coefficient and the highest rejection is obtained when the composition of the 9/6. FTIR test results showed no difference between the polymer cellulose acetate cellulose acetate membrane solvent variation results.
Amperometric biosensor for glucose detection based-on immobilisation of glucose oxidase in acetic cellulose membrane using ferrocene as mediator Asnawati Asnawati; Dwi Indarti; Tri Mulyono; Gembong Kesuma B
Jurnal ILMU DASAR Vol 14 No 1 (2013)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1038.725 KB) | DOI: 10.19184/jid.v14i1.481

Abstract

The study reported the development of glucose ampherometric biosensor based on immobilization of glucose oxidase on cellulose acetate membrane with ferrocene as a mediator. Biosensor was designed with model Fc, GOx, CP / GOx / CA where ferrocene and the enzyme glucose oxidase on carbon paste in immobilizatin on the electrode body in the form of glass tubes and in other parts of the enzyme glucose oxidase in immobilizatin on cellulose acetate membrane with adsorption techniques are placed in electrode tip by using the o-ring. The presence of enzymes immobilization was determined quantitatively by enzyme immobilization was Km value. The results showed the composition of acetone-water in the optimum coagulation bath is 0:100% and 0,0008 g of Optimum ferrocene. Biosensor for measuring glucose in the area amperometri 0,1 to 3 mM with regression coefficient of 0,996, the detection limit of 0,01 mM, sensitivity of 0,989 μA / mM, the reproducibility of 0,07 to 0,3% and lifetime of 1 day. Keywords : Biosensor; glucose oxidase ; acetic cellulose; Ferrocene: Ampherometric.
Characterization of Nata De Coco-Benedict Film by Adsorption as Sensor for Glucose in Urine Sample Dwi Indarti; A Asnawati
Jurnal ILMU DASAR Vol 12 No 2 (2011)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (229.967 KB)

Abstract

Research on nata de coco utilization as a film to immobilize benedict reagent for glucose analysis has been conducted. Immobilization of benedict by nata de coco film was evaluated by using adsorption method and characterization i.e. physical characterization (morphology) and viability characterization of its sensors activity for glucose. Morphological characterization (SEM) showed that the benedict reagent has been absorbed by nata de coco film despite leaching activity of 14.7%, with optimum concentration of Benedict of 0.2682 M, 40 min dyeing time at maximum of 541 nm. Sensor characterization of cellulose nata-Benedict for glucose showed regression coefficient of 0.9895, the detection limit of 780 ppm with a sensitivity of 0.001 and adsorption reproducibility of 0.2013%. Glucose content measurement on urine sample by using Nata De Coco-Benedict based Film Nelson-Somogyi.
Co-Authors A Asnawati Agus Wedi Pratama Ahmad Turidi Amiyati, Dewi Rara Anak Agung Istri Ratnadewi Apriliana, Gepsa Apriliasari, Yekti Asnawati Asnawati Asnawati Asnawati Asnawati Asnawati, A. Badrut Tamam Ibnu Ali Bambang Bambang Ahmad Indarto Bambang Piluharto Bambang Piluharto Busroni, Busroni Christine Manara D. Iwan Setiawan Denny Trias Utomo, Denny Trias Dharmawan, Aditya Dwiki Diah Ayu Nur Sholehah Dwi Jayanti, Denik DWI SURYANTO Eka Surya Buana, Eka Surya Elis Nur Farida, Elis Nur Fatwa, Muhammad Iqbal Fauziyah, Kamelia Rizqi Firmanto, Hendy Fitri Dwi Jayanti Gembong Kesuma B HARDIAN SUSILO ADDY Henry Adi Syahputra Sidabutar Heny Yunita Novianti I Nyoman Adi Winata Ika Oktavianawati Irmawati, Nurisda Eva Khofifah, Marhamatul Komsiyah, Komsiyah Kristi, Maganda Ananda Marahayu, Mustika Muhammad Firdaus Muhammad Reza Nanda Widayanti Neran Neran Novita Andarini Novitasari Novitasari Nurlia, Vera Priza Pandunata Purwatiningsih Purwo Handoko, Donatus Setyawan Putri, Sella August Putri, Sella August Rizqon Rizqon S. Purwo Handoko, Donatus Siti Nur Jannah Siti Rofiqoh, Siti Sudarko Sulistyo, Yudi Aris Sulistyowati, Fitri Tanti Haryati Tinok Dwi Ananda Tri Mulyono Tri Mulyono Ula, Mohammad Munal Wuryanti Handayani Yeni Maulidah Muflihah Yudi Aris Sulistiyo, Yudi Aris Zulfikar Zulfikar