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Analisis Logam Fe, Zn Dan Protein pada Kecap Industri Rumah Tangga dan Kecap Indofood Fatma Fatma; Tjurmin Ginting; Shinta Lestari
Jurnal Penelitian Sains No 4 (1998)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.927 KB) | DOI: 10.56064/jps.v0i4.235

Abstract

Telah dilakukan pengukuran kandungan besi, seng dan protein pada kecap industri rumah tangga merek Ayam, Ikan Mas dan sebagai pembanding juga dianalisa kecap merek Indofood. Terhadap air yang dipakai untuk merebus kacang kedelai dari kecap industri rumah tangga juga diukut kandungan logam besi dan sengnya. Kadar logam dalam kecap maupun air yang dipakai untuk merebus kacang kedelai diukur secara Spektro fotometri Serapan Atom melalui proses persiapan sampel secara destruksi basah dengan HNO3-H2SO4 dan H2O2, sedangkan penentuan protein dilakukan dengan metode semi mikro kjeddahl. Hasil penelitian untuk kecap indofood didapatkan kadar seng 4,35 ppm, besi tidak ada, protein 8,77%. Untuk kecap merek Ayam kadar besinya 28,01 ppm, Seng 44,054 dan protein 66,7%. Kecap merek Ikan Mas mengandung besi 118,45 ppm, seng 6,69 ppm dan protein 6,43%.
Penggunaan Koagulan Poly Alumunium Chloride (PAC) untuk Pengolahan Limbah Cair Industri Gambir Fatma Fatma; Poedji Loekitowati
Jurnal Penelitian Sains No 18 (2005)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (526.491 KB) | DOI: 10.56064/jps.v0i18.258

Abstract

Penelitian untuk mempelajari kemampuan Poly Alumunium Chloride (PAC) untuk menurunkan nilai kebutuhan oksigen kimia (KOK), total zat padat tersuspensi (TZPT) dan memperbaiki nilai pH telah dilakukan. Parameter yang ditentukan meliputi waktu kontak (0,5, 1,0, 1,5 dan 2,0 jam) dan berat PAC (5, 15, 25, 35 dan 50 mg). Hasil penelitian menunjukkan bahwa KOK awal limbah PAC pada kondisi optimum yaitu waktu kontak 1,5 jam, berat PAC 50 mg dengan volume limbah gambir 50 mL, nilai KOK menjadi 282,35 mg/L dengan efektif 69,90%, TZPT 133,3 mg/L dengan efektif 88,15% sedangkan pH menjadi 6,8. 
Penggunaan Lumut (Octoblepharum Albidum Hedw) Untuk Menyerap Fenol dari Limbah Pengeboran Minyak Bumi Fatma Fatma; Nova Yuliasari; Theresia Evy Yulianti Nedeak
Jurnal Penelitian Sains No 17 (2005)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5477.501 KB) | DOI: 10.56064/jps.v0i17.379

Abstract

Telah dilakukan penelitian tentang penggunaan lumut (Octoblepharum albidum Hedw) untuk penyerapan fenol dari limbah pengeboran minyak bumi. Kondisi optimum proses penyerapan didapatkan dengan menvariasikan waktu kontak, berat adsorben (lumut), dan pH larutan fenol. Pengukuran konsentrasi larutan fenol dilakukan secara Spektrofotometri UV-VIS pada panjang gelombang 504 nm. Hasil penelitian menunjukkan bahwa: proses penyerapan optimum pada waktu kontak 90 menit, berat adsorben 0,25 g dan pH 7, memberikan efisiensi penyerapan sebesar 65,41%. Aplikasi kondisi optimum terhadap limbah pengeboran minyak bumi memberikan efisiensi penyerapan sebesar 65,78%.
Pengaruh Usia Sumur Bor Terhadap Pelarutan Logam Timbal dan Kadmium dari Lumpur Bekas Pengeboran Minyak Prabumulih Sumatera Selatan Fatma Fatma; Miksusanti Miksusanti; Agus Syafriansyah
Jurnal Penelitian Sains No 13 (2003)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.088 KB) | DOI: 10.56064/jps.v0i13.306

Abstract

Telah dilakukan penelitian tentang pelarutan logam timbal (Pb) dan kadmium (Cd) dari lumpur bekas pengeboran minyal di daerah Prabumulih. Lumpur yang diteliti dengan variasi usia sumur yaitu 0,5; 1; 2 dan 3 tahun. Lumpur didestruksikan dengan aquaregia untuk analisis kandungan logam Pb dan Cd, sedangkan analisis pelarutan logam dari lumpur dilakukan dengan penambahan aquadimineral pada pH 6. Pengukuran kandungan logam dalam lumpur dan kandungan logam terlarut dilakukan secara Spektrometri Serapan Atom. Hasil penelitian menunjukkan bahwa terjadi penurunan konsentrasi Pb dan Cd dalam lumpur maupun yang terlarut seiring dengan bertambahnya usia sumur. Kadar logam Pb dan Cd dalam lumpur maupun yang terlarut dari setiap sumur bor yang diteliti sudah melewati ambang batas.
Pengaruh Proses Pengukusan Terhadap Daya Awet Rendang Daging Sapi yang Dikemas Julinar Julinar; Ester Lidya; Fatma Fatma
Jurnal Penelitian Sains No 18 (2005)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (761.63 KB) | DOI: 10.56064/jps.v0i18.254

Abstract

Penjelasan tentang pengaruh proses pengukusan terhadap daya awet rendang daging sapi yang dikemas telah dilakukan. Produk rendang dikemas dalam plastik tahan panas dan pengukusan dilakukan selama 60 menit. Penelitian dilakukan dengan menggunakan Rancangan Acak Lengkap (RAL), dengan 8 taraf lama penyimpanan yaitu 0, 1, 2, 3, 7, 14, 21, 28 dan 35 hari. Analisis nilai gizi produk rendang meliputi kadar air, kadar lemak dan kadar protein. Uji organoleptik juga dilakukan untuk mengetahui tingkat kesukaan panelis terhadap produk rendang yang dikukus dan disimpan. Dari analisis keragaman terhadap kadar air, lemak dan protei, menunjukkan bahea perlakuan pengukusan memberikan pengaruh nyata (P<0,05), tapi berdasarkan uni beda nyata jujur (BNJ) antara setiap perlakuan sebagian besar menunjukkan perbedaan yang tidak nyata, ini menunjukkan bahwa proses pengukusan cukup baik untuk mempertahankan mutu rendang daging sapi.
Studi Pemanfaatan Sabut Kelapa untuk Penyerapan Ion Kadmium dari Limbah Pabrik Pelapis Seng Fatma Fatma
Jurnal Penelitian Sains No 12 (2002)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4654.253 KB) | DOI: 10.56064/jps.v0i12.390

Abstract

Telah dilakukan penelitian penggunaan sabut kelapa sebagai material penyerap ion logam kadmium. Kondisi optimal proses penyerapan ditentukan dengan memberikan variasi ion larutan, ukuran partikel sabut, dan variasi konsentrasi ion logam. Pengukuran konsentrasi ion logam dilakukan dengan Spektrometri Serapan Atom. Hasil penelitian didapatkan penyerapan sabut kelapa optimum pada pH 5, ukuran partikel 80 mesh dan konsentrasi ion logam 20 ppm. Efisiensi penyerapan ion logam kadmium didapatkan 96,99% pada kondisi optimum, sedangkan efisiensi penyerapan untuk limbah pabrik pelapisan seng didapatkan 57,57%.
Pelatihan Pembuatan Hand Sanitizer Cair dari Ekstrak Kulit Jeruk Nipis di Kawasan Wisata Desa Burai Poedji Loekitowati Hariani; Fatma Fatma; Muhammad Said; Risfidian Mohadi; Salni Salni
Jurnal Gema Ngabdi Vol. 4 No. 1 (2022): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v4i1.225

Abstract

Burai village is located in Tanjung Batu sub-district, Ogan Ilir district. Burai Village is a tourism mainstay village in Ogan Ilir district. This village is known as the colorful village. As an ecotourism destination, water tourism and fishing programs have been developed, as well as environmentally friendly fish farming through organic feed. Other tourism potentials, such as the existence of traditional Bari houses that are more than 200 years old, and songket crafts. As patients with the COVID-19 virus have decreased, the number of tourists visiting Burai village has also increased. Health protocols are still needed, one of which is the use of hand sanitizer. This community service activity is to provide training on making liquid hand sanitizer from lime peel extract with the target audience being the Burai village community, especially tourism service providers. Lime plant is one of the plants cultivated by the people of Burai village. Orange peel extract contains essential oils that function to inhibit the growth of bacteria. In addition, orange peel extract has a fresh aroma. Activities are carried out by giving lectures, training on making hand sanitizers and packaging them. With this activity, it is hoped that the community will be able to provide hand sanitizers for both their own needs and tourists. The results of the activity showed high community participation in activities, more than 75% of the target audience liked the aroma of lime peel extract hand sanitizer.
Alumina-Activated Carbon Composite as Adsorbent of Procion Red Dye from Wastewater Songket Industry Poedji Loekitowati Hariani; Fatma Fatma; Zulfikar Zulfikar
The Journal of Pure and Applied Chemistry Research Vol 4, No 1 (2015)
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (863.408 KB) | DOI: 10.21776/ub.jpacr.2015.004.01.206

Abstract

Alumina-activated carbon composite has been synthesized and studied for adsorption procion red dye. Composite was prepared by precipitation method aluminium hydroxide on the surface of activated carbon followed by calcinations. The Fourier transform Infra Red (FTIR), Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS) and Brunaeur Emmet Teller (BET) surface are being used to characterize the adsorbent. Batch adsorption experiments were carried out for the adsorption of procion red dye. Effect of the mass of composite, stirrer speed, contact times and pH of the solution on the adsorption capacity were studied. The obtained optimum conditions applied to adsorp of procion red dye from wastewater songket industry. The result showed that the adsorption optimum at mass of alumina-activated carbon composite 0.1 g, stirrer speed 150 rpm, contact times 2 hours at pH of the solution 9. The adsorption isotherm data according to Langmuir isotherm. The alumina-activated carbon composite can be removal of procion red dye from wastewater songket industry with effectiveness adsorption of 88.21 %.
Effect of Calcination Temperature on The Synthesis of Silica from Bagasse Poedji Loekitowati Hariani; Fahma Riyanti; Desneli Desneli; Fatma Fatma; Sabila Yunita; Muhammad Said
The Journal of Pure and Applied Chemistry Research Vol 10, No 2 (2021): Edition May-August 2021
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2021.010.02.587

Abstract

Bagasse is the solid waste derived from the sugar-making process. A large amount of silica in bagasse is a potential source of silica. In this study, extraction of silica from bagasse was carried out in the following steps: pretreatment of bagasse using HCl solution, followed by calcination at varying temperatures (700℃, 800℃, and 900℃) using a furnace. Furthermore, extraction using NaOH solution and precipitation using HCl. Silica characteristics were obtained using X-Ray Diffraction (XRD), Scanning Electron Microscopy-Electron Dispersive Spectrometry (SEM-EDS), and BET surface area. The results showed that calcination temperature affected the characteristics of the silica produced. The silica extracted at 700℃ produced an amorphous phase with a broad peak at an angle of 2θ = 20-24°. It contained the most considerable silica content and surface area, 42.46% and 796.89 cm2/g, respectively. The extracted silica had an average diameter of 5.67 mm and a pore volume of 1.184 cm3/g.
Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material Poedji Loekitowati Hariani; Desnelli Desnelli; Fatma Fatma; Rizki Indah Putri; Salni Salni
The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.85 KB) | DOI: 10.21776/ub.jpacr.2018.007.02.393

Abstract

The iron oxide (Fe3O4) nanoparticles modified with polyethylene glycol (PEG) was synthesized by co-precipitation methods using ferric and ferrous ions as the precursors. Further, the antibacterial activity was performed against gram-positive and gram-negative bacteria. The Fe3O4-PEG was characterized using X-Ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), Scanning Electron Microscopy (SEM) with energy dispersive X-Ray analysis (EDAX) and Vibrating Sample Magnetometer (VSM). The particle size of Fe3O4-PEG calculated using XRD is 46.2 nm. The study confirmed that Fe3O4-PEG is superparamagnetic and has a saturation magnetization of 56.43 emu/g. The prepared Fe3O4-PEG gives the effect of both gram-positive and gram-negative pathogenic bacterial strains hence this material has potential utilization in the field of pharmaceutical and biomedical in the future.