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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  
Effect of Addition of Monosodium Glutamate (MSG) on Coagulation Basin to Characteristics of Cellulose Acetate Membranes Siti Rofiqoh; Dwi Indarti; Bambang Piluharto
Jurnal ILMU DASAR Vol 17 No 2 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (252.307 KB) | DOI: 10.19184/jid.v17i2.2687

Abstract

The aim of recearch is study the effect of MSG in coagulation basin on cellulose acetat membranes properties. It was preparated by phase inversion technique. As the result showed that the higher the concentration of MSG in coagulation basin, which is character of membrane permeability coefficients and lower water flux. Dextran rejection of 11, 40, 100-200, and 500 kDa increased. The morphology analysis has shown that sub layer membranes structure with 2% MSG addition more uniform than 0,5% MSG addition.Keywords: cellulose acetat, phase inversion, MSG, coagulation basin
Utilization of Supported Liquid Membrane (SLM) in Separation of Pb(II) by Varying Concentration of Carrier and Feed Solution Dwi Indarti; Novitasari Novitasari; Yudi Aris Sulistyo
Jurnal ILMU DASAR Vol 18 No 2 (2017)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (641.499 KB) | DOI: 10.19184/jid.v18i2.4708

Abstract

Supported liquid membrane (SLM) was prepared by reacting host material with carrier compounds. Carrier compound was Polyethylene Glycol-400 (PEG-400) that have been used with the variation of concentration 0, 2, 4, and 6%. The effect of its variations in SLM was characterized by FTIR and the performance was examined by transporting feed solution Pb(NO3)2 with variation 1, 5, 10, 15, and 25 ppm for 3 hours in pH 3. FTIR spectra depicted that the increasing concentration of PEG would arise the intensity of typical PEG’s functional groups such as -OH, C-O-C, and CH2-CH2 sp3. The optimum transport Pb(II) was achieved by SLM with 6% PEG. Variation of feed solution concentration showed the main effect in SLM activity. The higher of feed solution concentration would decrease of transport activity. The % extract and % recovery 1 ppm was higher than 25 ppm with 72,5% and 70,27% than 6,1% and 3,59%, respectively. Keywords: supported liquid membrane, Pb(II), poly ethylene glycol, extraction and recovery, carrier compound
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

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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.
Protein Adsorption on Modified Bacterial Cellulose Bambang Piluharto; Fitri Sulistyowati; Dwi Indarti; Busroni Busroni
Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 1 (2020): May
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v3i1.26413

Abstract

The protein adsorption was interesting study, especially in the biological fluidic application. In the present study, we study the protein adsorption behavior on the bacterial cellulose and modified bacterial cellulose. In here, bacterial cellulose was modified by acid hydrolysis using hydrochloric acid. The contact time and pH were used as variable to study protein adsorption behavior on the modified bacterial cellulose. As the results, based on functional group analysis, there are not different between bacterial cellulose and modified bacterial cellulose. However, after modification, there was increasing of crystallinity of bacterial cellulose from 84.5% to be 87.7%. In the protein adsorption study, increasing the contact time increase percent adsorption until contact time of 90 minutes, however the further contact time relatively constant. The protein adsorption on both of bacterial cellulose and modified bacterial cellulose decreases, following the increase of pH.
PEMBERDAYAAN EKONOMI UNIT USAHA PRODUKSI ASAP CAIR DI DESA PATEMON, KECAMATAN TANGGUL, KABUPATEN JEMBER Bambang; Dwi Indarti; Asnawati Asnawati; Priza Pandunata
J-Dinamika : Jurnal Pengabdian Masyarakat Vol 6 No 2 (2021): December
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/j-dinamika.v6i2.2535

Abstract

CV Medipety Nusantara adalah mitra kegiatan yang merupakan unit usaha produksi asap cair yang berada di desa Patemon, kecamatan Tanggul, Kabupaten Jember. Produk asap cair yang dihasilkan mitra kegiatan masuk dalam katagori asap cair grade 2. Permasalahan utama unit usaha ini adalah terbatasnya segmen pasar dan minimnya varian produk berbasis asap cair. Dengan demikian diperlukan solusi untuk mengatasi permasahan dari mitra kegiatan ini. Kegiatan PKM ini secara umum bertujuan mengembangkan produk asap cair dari mitra kegiatan melalui teknik pemurnian asap cair. Secara khusus kegiatan ini bertujuan (1) memberikan pelatihan dan pendampingan tentang pemurnian asap cair untuk meningkatkan kualitas produksi asap cair dengan grade 1 sekaligus sebagai varian baru produk asap cair. (2) mengembangkan pemasaran produk asap cair berbasis web. Untuk mencapai sasaran kegiatan, metode yang dilakukan meliputi pelatihan pemurnian produk asap cair dan pengembangan strategi pemasaran melalui pemasaran berbasis web. Kegiatan pelatihan ini diikuti dengan pendampingan sebanyak tiga kali oleh tim kegiatan. Kegiatan pelatihan dan penyuluhan tentang penggunaan alat distilasi agar didapatkan produk grade 1 dilakukan di tempat mitra, sedangkan pelatihan tentang pengembangan web dan juga media penjualan online dialkukan di Jurusan Kimia oleh salah satu tim. Setelah pelatihan yang dilakukan di waktu berikutnya diadakan monitoring tentang penggunaan alat distilasi dan kendala di lapang.