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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Jurnal Sains Materi Indonesia IPTEK The Journal for Technology and Science JURNAL FISIKA Sainteknol : Jurnal Sains dan Teknologi Jurnal Spektra Jurnal Keramik dan Gelas Indonesia Omega: Jurnal Fisika dan Pendidikan Fisika Jurnal Teknologi Mineral dan Batubara INDONESIAN JOURNAL OF APPLIED PHYSICS Indonesian Mining Journal Indonesian Journal of Chemistry Jurnal Elektronika dan Telekomunikasi Jurnal Teknik Metalurgi Indonesian Physical Review Jurnal Riset Teknologi Industri Jurnal Keramik dan Gelas Indonesia Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK) Makara Journal of Science Makara Journal of Technology Jurnal Teknologi Mineral dan Batubara Jurnal Polimesin Jurnal Sains Materi Indonesia Indonesian Mining Journal
Azwar Manaf
Departemen FMIPA, Universitas Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : Makara Journal of Technology

 1 
Magnetic Field Effects on CaCO3 Precipitation Process in Hard Water Saksono, Nelson; Bismo, Setijo; Krisanti, Elsa; Manaf, Azwar; Widaningrum, Roekmijati
Makara Journal of Technology Vol. 10, No. 2
Publisher : UI Scholars Hub

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Magnetic Field Effects on CaCO3 Precipitation Process in Hard Water. Magnetic treatment is applied as physical water treatment for scale prevention especially CaCO3, from hard water in piping equipment by reducing its hardness. Na2CO3 and CaCl2 solution sample was used in to investigate the magnetic fields influence on the formation of particle of CaCO3. By changing the strength of magnetic fields, exposure time and concentration of samples solution, this study presents quantitative results of total scale deposit, total precipitated CaCO3 and morphology of the deposit. This research was run by comparing magnetically and non-magnetically treated samples. The results showed an increase of deposits formation rate and total number of precipitated CaCO3 of magnetically treated samples. The increase of concentration solution sample will also raised the deposit under magnetic field. Microscope images showed a greater number but smaller size of CaCO3 deposits form in magnetically treated samples, and aggregation during the processes. X-ray diffraction (XRD) analysis showed that magnetically samples were dominated by calcite. But, there was a significant decrease of calcite’s peak intensities from magnetized samples that indicated the decrease of the amount of calcite and an increase of total amorphous of deposits. This result showed that magnetization of hard water leaded to the decreasing of ion Ca2+ due to the increasing of total CaCO3 precipitation process.
Effects of Ph on Calcium Carbonate Precipitation Under Magnetic Field Saksono, Nelson; Yuliusman, Yuliusman; Bismo, Setijo; Soemantojo, Roekmijati W.; Manaf, Azwar
Makara Journal of Technology Vol. 13, No. 2
Publisher : UI Scholars Hub

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Magnetic field effect on CaCO3 precipitation is the key parameter in evaluating the effectiveness of Anti-scale Magnetic Treatment (AMT). The purpose of this study was to investigate magnetic fields influence on CaCO3 precipitation in high and low super-saturated CaCO3 solution by varied pH CaCO3 solution using circulation flow fluid system. The observation results in the high super saturated solution (pH 8.5) showed the increase of precipited CaCO3 in magnetized solutions compared to those in non-magnetic solution during circulation process. In the low super-saturated CaCO3 solution (pH 6.4) it was found that magnetic treatment increased CaCO3 precipitation after circulation process. In high super-saturated solution, magnetic field strengthens ion interactions, which reduce precipitation during circulation process. However, in low super-saturated CaCO3 solution, magnetic field weakens hydrate ion interaction which indicated by decreasing of the conductivity of solution. It increases the precipitation of CaCO3 after the circulation of magnetization process has completed.
Formation of CaCO3 Particle and Conductivity of Na2CO3 and CaCl2 Solution Under Magnetic Field on Dynamic Fluid System Saksono, Nelson; Bismo, Setijo; Widaningroem, Roekmijati; Manaf, Azwar
Makara Journal of Technology Vol. 15, No. 1
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Hard water causes the CaCO3 scale formation on the pipe walls and heat exchanger equipments in industrial or domestic water processes. A great number of experimental researches on the prevention of the CaCO3 precipitation process by magnetic field have been carried out. In this research, Na2CO3 and CaCl2 solutions was magnetized in the circulated flow condition (dynamic fluid system). The velocity of fluid and the circulation time was modified to examine its influences to the magnetization process. CaCO3 content was measured by titration method of EDTA complexometry. Conductivity test was conducted to find out hydrate ion bonding. The results showed that magnetization increased the CaCO3 formation and the optimum process reaches for 10 minutes circulation on 0.554 m/s of flow rate. Magnetic field decreases the conductivities of Na2CO3 and CaCl2 solution, hence reduced the ion hydrate bonding. These results showed that magnetization on Na2CO3 and CaCl2 ionic solution was effective in controlling the CaCO3 formation by increasing CaCO3 precipitation.
Co-Authors Abdul Jami Adi Ganda Putra Agus Sukarto Agus Sukarto Ahmad Royani Akmal Johan Andreas Andreas Arbi Dimyati Arie Fiandimas Arieko Abdillah Asep Yudi Hercuadi Asep Yudi Hercuadi, Asep Yudi Bahfie, Fathan Bambang Soegijono Birawidha, David C Budhy Kurniawan Cahaya, Adam Badra Daulay, Amru Dedi Dedi Diah Susanti Djoko HP Doansi Tarihoran Dwita Suastiyanti Eddy Siradj Edie Sasito, Edie Eko Sulistiyono, Eko Elda Rayhana Elfrida Ratnawati Elisabeth A. S. Elsa Krisanti Erfan Handoko Erik Prasetyo Fajar Nurjaman Fajar Nurjaman Fathan Bahfie firdiyono, F Hafni Lissa Nuri Handoko, Djati Hasan Fahad Idris Novianto Iskandar Muda Iskandar Muda Iskandar Muda Lingga Hermanto Mabe Siahaan Manawan, Maykel Manawan, Maykel Marliyadi Pancoko Mas Ayu Elita Hafizah Maykel Manawan Mujamilah Mujamilah Mulyaningsih, Neng Nenden Musfirah Cahya Fajrah, Musfirah Cahya Nanang Sudrajat Nelson Saksono Nelson Saksono Novizal Novizal, Novizal Novrita Idayanti Nurul Taufiqu Rochman Nurul Taufiqu Rochman Pontas Sialagan Priyono K. Priyono P Priyono Priyono Rafael F Maniur Ridwan Ridwan Roekmijati Soemantojo Roekmijati Soemantojo, Roekmijati Roekmijati W. Roekmijati W. Soemantojo, Roekmijati W. Roekmijati Widaningroem Roekmijati Widaningroem, Roekmijati Roekmijati Widaningrum Roekmijati Widaningrum, Roekmijati Rudi Subagja Saptari, Sitti Ahmiatri Setijo Bismo Setijo Bismo Setyo Purwanto Setyo Purwanto Sialagan, Pontas Sipahutar, Wahyu Solafide Sri Mulyaningsih Sri Mulyaningsih Sukmara, Sony Suprihatin Suprihatin Taufik A. Bonaedy Tito Prastyo Rahman Tito Prastyo Rahman, Tito Prastyo Tri Haryono Ulin Herlina Valency, Tiara Wakid Ali Muntoha Widi Astuti Widi Astuti Wisnu A. Adi Wisnu Ari Adi Wisnu Ari Adi Wisnu Ari Adi Wisnu Ari Adi Yana Taryana Yuliana Sari Yuliusman Yuliusman Yuliusman Yuliusman Yuyu Wahyu