Rame Rame, Rame
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SEL ELEKTROLISIS 3–KOMPARTEMEN UNTUK EKSTRAKSI MAGNESIUM DAN SULFAT DARI SISTEM LARUTAN MGSO4–KCL–H2O Rahmanto, Wasino Hadi; Asy?ari, Mukhammad; Rame, Rame; Marihati, Marihati
Jurnal Kimia Sains dan Aplikasi Vol 9, No 1 (2006): Volume 9 Issue 1 Year 2006
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.724 KB) | DOI: 10.14710/jksa.9.1.14-21

Abstract

Extraction of magnesium and sulfate from MgSO4?KCl?H2O solution system of 0.1 M salt concentration has been conducted. The 3?compartment electrolytic cell model was designed to fulfill the purpose. The cell is constructed from aquarium plastic box of 417 mL capacity divided into three compartments. Each compartment is separated by fixed plastic wall. One of the compartment with no electrode (mid compartment) was connected either to anodic (left) and cathodic (right) compartment using double filter paper strip of 2 x 6 (in cm) dimension. Electrolysis was performed in atmospheric environment under the 6 volt external electric potential using 7A Montana power supply. Experimental results show that electrolysis systems provide good separation of magnesium and sulfate from solution. Magnesium in the form of Mg(OH)2 and sulfate as H2SO4 has been obtained in about 92 % yield. Clear solution in the mid compartment show the absence of salt residues; both of cationic and anionic species migrate totally toward cathodic and anodic compartment respectively.
EFFICIENT CELL-WALL DISRUPTION OF MICROALGAE CHLORELLA VULGARIS IN WATER BY CATALYTIC OZONATION OVER MICROPOROUS CARBON-SUPPORTED TITANIUM OXIDE Rame, Rame; Nilawati, Nilawati; Silvy Djayanti, Silvy; Irnaning Handayani, Novarina; Purwanto, Agus; Ruliaty, Lisa; Dwi Harjanto, Ganang
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 9, No 2 (2018)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2018.v9.no2.p30-36

Abstract

This study investigated several parameters for cell-wall disruption from microalgae Chlorella vulgaris during catalytic ozonation over microporous carbon-supported titanium oxide, including flow ozone, catalytic time, and reactor capacity. At the same time, the cell-wall disruption yield and an active compound yield such as chlorophyll and carotenoid were evaluated for each pretreatment. The required delivered flow ozone to achieve 76,47% cell-wall disruption of Chlorella vulgaris was 1 minute at 4 LPM, which produced chlorophyll 56,75% and carotenoid 89,09%. Carbon-supported titanium oxide reduces the required O3 dose and catalytic time for cell-wall disruption; however, it limited chlorophyll yield did not exceed 75,67%. Pretreatment with 1 minute at 1 LPM in 2 liters produced carotenoid yield by approximately 98,18%, though it reduced chlorophyll to 59,45%. 
HIGH PERFORMANCE OF ENZYMATIC BIOPROCESS FOR PRODUCTION OF BIOMASSED-BASED BIOETHANOL OF SAGO PALM FIBER WASTE Harihastuti, Nani; Rame, Rame; Djayanti, Silvy
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 9, No 2 (2018)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2018.v9.no2.p37-45

Abstract

Biomass waste in the form of fiber dregs contains many components of lignocellulose and hemicellulose. Lignocellulose can be used to produce ethanol through enzymatic biotechnology processes. Sago palm fiber industry is one potential industry producing biomass waste in the form of solid waste of fiber dregs (about 30% from the weight of processed raw materials). Solid fiber waste contains crude fiber and lignocellulose compound consists of cellulose (35-50%), hemicellulose ( 20-35%) and lignin (12-20%). This study aimed to utilize solid waste of sago palm fiber as a raw material of bioethanol production through enzymatic biotechnology processes of delignification, saccharification and fermentation which was then purified by distillation process to get ethanol. Delignification,  saccharification, and fermentation stages are conducted using Phanerochaete chrysosporus Mushroom, Trichoderma viride fungus, and saccharomyces cerevisiae, respectively and then purified by distillation process (one level) to produce ethanol. The process of saccharification and fermentation process were done in an integrated manner (addition of Trichoderma viride and yeast saccharomyces cereviceae fungi done simultaneously). The weight of raw materials of solid waste fiber treated was about 6 kgs. Alcohol content obtained was about ± 4% (distillation). No water, air, and soil pollution inflicted, more added value, and sustainable were the main benefits of biotech process or bioprocess.
PENGOLAHAN AIR LIMBAH TEKSTIL BERBASIS OZONISASI KATALITIK DENGAN KATALIS BESI(III) OKSIDA (FE2O3) DAN ALUMINIUM OKSIDA (AL2O3) MENGGUNAKAN DIFUSER MIKRO Rame, Rame; Purwanto, Agus; Budiarto, Agung
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 8, No 2 (2017)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2017.v8.no2.p67-75

Abstract

Proses oksidasi lanjut (AOP) merupakan teknologi pengolahan air limbah industri tekstil yang sangat potensial. Kelemahan teknologi ini adalah pemakaian H2O2 yang berimplikasi pada biaya operasional dan peningkatan kadar keasaman. Teknologi ozonisasi katalitik terintegrasi katalis Fe2O3 dan Al2O3 dengan difuser mikroadalah alternatif solusi yang murah dan efisien. Ozonisasi katalitik dilakukan dengan variasi  dosis katalis 500 g, 1000 g, 1500 g dan flow ozon 1, 2, 3, 4 L/menit dengan volume air limbah 20 L. Optimalisasi proses ozonisasi katalitik dilakukan melalui variasi waktu kontak. Kinerja fungsi katalis diukur berdasarkan umur pemakaian. Indikator kinerja reaktor diukur dengan parameter warna, suhu, TSS, COD, dan BOD5. Kondisi ozonisasi  katalitik terbaik untuk dosis katalis 500 g Fe2O3, 500 g Al2O3, waktu ozonisasi  katalitik 20 menit dengan flow ozon 2 L/menit.
INTEGRASI TEKNOLOGI KOAGULASI-FLOKULASI DENGAN FILTER SILIKA-KARBON AKTIF UP FLOW SEBAGAI UNIT PENGOLAH AIR LIMBAH INDUSTRI KARPET Mukimin, Aris; Purwanto, Agus; Syahroni, Cholid; Moenir, Misbachul; Rame, Rame; Budiarto, Agung
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 8, No 1 (2017)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2017.v8.no1.p13-22

Abstract

Latek, kapur dan air merupakan bahan utama dalam proses produksi industri karpet. Komposisi dari ketiga bahan tersebut secara berurutan 30%, 50% dan 20% sehingga karakteristik air limbahnya dominan mengandung COD dan TDS. Integrasi koagulasi-flokuasi dengan filter silika-karbon aktif menjadi pilihan yang tepat sebagai unit pengolah polutan tersebut. Unit koagulasi dibuat dalam bentuk tabung silinder dengan kapasitas 2,5 m3, adapun filter silika-karbon aktif ditempatkan dalam dua tabung vertikal dengan kapasitas masing-masing 50 L . Proses koagulasi-fllokulasi dilakukan dengan sistem bacth menggunakan tawas dan anion yang dilanjutkan dengan sedimentasi dan aerasi. Filter vertikal silika-karbon aktif dioperasikan dengan sistem alir kontinyu secara up flow sebagai tahap akhir dari unit pengolahan. Reduksi COD dan DHL telah mampu mencapai 92% dan 74% dengan dosis tawas 1,96 Kg, kapur 0,857 Kg dan anion 1 g untuk volume limbah 2,45 m3 serta laju alir 6 L/menit di filter silika-karbon aktif.
LOW ENERGY BACTERIA PRESERVATION OF EXTREMELY HALOPHILIC ARCHAEA HALOFERAX LUCENTENSE AND HALOFERAX CHUDINOVII IMMOBILIZED USING NATURAL ZEOLITE Malik, Rizal Awaludin; Nilawati, Nilawati; Handayani, Novarina Irnaning; Rame, Rame; Djayanti, Silvy; Pratiwi, Ningsih Ika; Setianingsih, Nanik Indah; Nasuka, Nasuka
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 10, No 2 (2019)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2019.v10.no2.p16-28

Abstract

The methods of microbial cells preservation were already known by liquid drying, freeze-drying, and freezing. Those methods could preserve bacteria cells in a long period of time but its survivability was relatively low and used relatively high energy during preservation. Immobilization was known as entrapping, attaching or encapsulating bacterial cells in a suitable matrix. This research was conducted to know the suitability of zeolite as immobilization carrier and also as preservation matrix of two halophilic archaea Haloferax chudinovii and Haloferax lucentense. Variable of this research was the type of the carrier which was raw zeolite, 110oC and 300oC heat-activated zeolite carrier, parameters measured in this study was physical and chemical of zeolite such as chemical content, Si/Al ratio, surface area and pore volume, and biochemical assay, bacterial cells numbers after immobilization and bacterial cells after preservation as bacterial response to the immobilization and preservation. Heat activation was significantly affecting the chemical composition, carrier surface area, and pore volume. Highest surface area, pore volume, and Si/Al ratio were obtained in 110oC pretreated zeolite followed by 300oC pretreated zeolite. The bacterial cells obtained after immobilization process was 1,8x107 cfu/g, 3,0 x 107 cfu/g, and 2,1x107 for raw zeolite, 110oC pretreated zeolite and 300oC zeolite respectively. After 4 months preservation, the slight reduction of the bacterial cells was observed. Immobilization halophilic archaeae using zeolite as carrier was proven as low cost and effective preservation method due to relatively simple process and unspecific preservation temperature requirements.
PENGGUNAAN KHAMIR RHODOTORULA MUCILAGINOSA UNTUK BIOSENSOR BOD MENGGUNAKAN ELEKTRODA EMAS Rame, Rame
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 5, No 2 (2014)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2014.v5.no2.p37-44

Abstract

Aplikasi biosensor BOD pada dasarnya meningkat seiring dengan berkembangnya keperluan manusia dan kemajuan IPTEK. Tetapi secara umum tetap didominasi untuk aplikasi dibidang medis dan lingkungan hidup.Biosensor BOD berdasarkan metabolisme khamir dikembangkan dalam rangka mempersingkat waktu pengukuran nilai BOD untuk monitoring lingkungan. Pengembangan biosensor dibuat melalui imobilisasi khamir pada film tipis dalam matrik agarose dengan Nafion sebagai membran untuk proses pertukaran ion. Khamir diambil dari fermentasi Rhodotorula mucilaginosa. Film tipis kemudian dilekatkan pada emas sebagai elektroda kerja. Biosensor BOD  dikalibrasi  menggunakan larutan yang mengandung glukosa yang setara sebagai sampel standar. Kondisi optimum diamati dengan waktu tunggu pengukuran 20 menit pada potensial  500 mV (vs Ag/AgCl). Untuk analisis glukosa, waktu tunggu adalah 20 menit dengan batas deteksi 1 mg/l. Hubungan linier yang baik diperoleh dari larutan standar glukosa yaitu, 2 0.99 dan estimasi kesalahan pengukuran 2,45%. Nilai BOD yang diperoleh dari biosensor menunjukkan perbandingan yang baik dengan konvensional.
PENGGUNAAN KHAMIR RHODOTORULA MUCILAGINOSA UNTUK BIOSENSOR BOD MENGGUNAKAN ELEKTRODA EMAS Rame, Rame
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 5, No 2 (2014)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2014.v5.no2.p37-44

Abstract

Aplikasi biosensor BOD pada dasarnya meningkat seiring dengan berkembangnya keperluan manusia dan kemajuan IPTEK. Tetapi secara umum tetap didominasi untuk aplikasi dibidang medis dan lingkungan hidup.Biosensor BOD berdasarkan metabolisme khamir dikembangkan dalam rangka mempersingkat waktu pengukuran nilai BOD untuk monitoring lingkungan. Pengembangan biosensor dibuat melalui imobilisasi khamir pada film tipis dalam matrik agarose dengan Nafion sebagai membran untuk proses pertukaran ion. Khamir diambil dari fermentasi Rhodotorula mucilaginosa. Film tipis kemudian dilekatkan pada emas sebagai elektroda kerja. Biosensor BOD  dikalibrasi  menggunakan larutan yang mengandung glukosa yang setara sebagai sampel standar. Kondisi optimum diamati dengan waktu tunggu pengukuran 20 menit pada potensial  500 mV (vs Ag/AgCl). Untuk analisis glukosa, waktu tunggu adalah 20 menit dengan batas deteksi 1 mg/l. Hubungan linier yang baik diperoleh dari larutan standar glukosa yaitu, 2 0.99 dan estimasi kesalahan pengukuran 2,45%. Nilai BOD yang diperoleh dari biosensor menunjukkan perbandingan yang baik dengan konvensional.
LOW ENERGY BACTERIA PRESERVATION OF EXTREMELY HALOPHILIC ARCHAEA HALOFERAX LUCENTENSE AND HALOFERAX CHUDINOVII IMMOBILIZED USING NATURAL ZEOLITE Malik, Rizal Awaludin; Nilawati, Nilawati; Handayani, Novarina Irnaning; Rame, Rame; Djayanti, Silvy; Pratiwi, Ningsih Ika; Setianingsih, Nanik Indah; Nasuka, Nasuka
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 10, No 2 (2019)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2019.v10.no2.p16-28

Abstract

The methods of microbial cells preservation were already known by liquid drying, freeze-drying, and freezing. Those methods could preserve bacteria cells in a long period of time but its survivability was relatively low and used relatively high energy during preservation. Immobilization was known as entrapping, attaching or encapsulating bacterial cells in a suitable matrix. This research was conducted to know the suitability of zeolite as immobilization carrier and also as preservation matrix of two halophilic archaea Haloferax chudinovii and Haloferax lucentense. Variable of this research was the type of the carrier which was raw zeolite, 110oC and 300oC heat-activated zeolite carrier, parameters measured in this study was physical and chemical of zeolite such as chemical content, Si/Al ratio, surface area and pore volume, and biochemical assay, bacterial cells numbers after immobilization and bacterial cells after preservation as bacterial response to the immobilization and preservation. Heat activation was significantly affecting the chemical composition, carrier surface area, and pore volume. Highest surface area, pore volume, and Si/Al ratio were obtained in 110oC pretreated zeolite followed by 300oC pretreated zeolite. The bacterial cells obtained after immobilization process was 1,8x107 cfu/g, 3,0 x 107 cfu/g, and 2,1x107 for raw zeolite, 110oC pretreated zeolite and 300oC zeolite respectively. After 4 months preservation, the slight reduction of the bacterial cells was observed. Immobilization halophilic archaeae using zeolite as carrier was proven as low cost and effective preservation method due to relatively simple process and unspecific preservation temperature requirements.
INTEGRASI TEKNOLOGI KOAGULASI-FLOKULASI DENGAN FILTER SILIKA-KARBON AKTIF UP FLOW SEBAGAI UNIT PENGOLAH AIR LIMBAH INDUSTRI KARPET Mukimin, Aris; Purwanto, Agus; Syahroni, Cholid; Moenir, Misbachul; Rame, Rame; Budiarto, Agung
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol 8, No 1 (2017)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2017.v8.no1.p13-22

Abstract

Latek, kapur dan air merupakan bahan utama dalam proses produksi industri karpet. Komposisi dari ketiga bahan tersebut secara berurutan 30%, 50% dan 20% sehingga karakteristik air limbahnya dominan mengandung COD dan TDS. Integrasi koagulasi-flokuasi dengan filter silika-karbon aktif menjadi pilihan yang tepat sebagai unit pengolah polutan tersebut. Unit koagulasi dibuat dalam bentuk tabung silinder dengan kapasitas 2,5 m3, adapun filter silika-karbon aktif ditempatkan dalam dua tabung vertikal dengan kapasitas masing-masing 50 L . Proses koagulasi-fllokulasi dilakukan dengan sistem bacth menggunakan tawas dan anion yang dilanjutkan dengan sedimentasi dan aerasi. Filter vertikal silika-karbon aktif dioperasikan dengan sistem alir kontinyu secara up flow sebagai tahap akhir dari unit pengolahan. Reduksi COD dan DHL telah mampu mencapai 92% dan 74% dengan dosis tawas 1,96 Kg, kapur 0,857 Kg dan anion 1 g untuk volume limbah 2,45 m3 serta laju alir 6 L/menit di filter silika-karbon aktif.