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Mas'ud, Sifa'ul
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THE EFFECT OF ELECTRODE COATING FROM BISPHENOL-A-POLYCARBONATE CD-R WASTE FOR HYDROGEN PRODUCTION Sulaiman, Abdul Mudjib; Mas'ud, Sifa'ul; Daroini, Ahmad Najih; Purnami, Purnami
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 1 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.01.2

Abstract

Water electrolysis is a method that utilizes direct electric current to decompose water into O2 and H2. The productivity of hydrogen produced in the electrolysis of water is low. One of the main reasons for the low electrolysis efficiency of water is the resistance of the electrode material. The electrode that is often used in the electrolysis of water is a graphite electrode. The coating on graphite electrodes can be a solution to minimize material degradation at the electrodes. With the condition that the coating material is able to slow down the damage to graphite electrodes and is a good electrical conductor. In this study, we used polycarbonate material as a material for coating the electrodes. The polycarbonate material that will be used is obtained from electrical waste, namely CD-R. The polycarbonate was separated mechanically and then ground to a powder with a size of 400 m. Polycarbonate powder will be coated on the cathode surface by the thermal coating method. Polycarbonate contains Bisphenol A compound which has an aromatic ring. The presence of a magnetic field caused by the delocalization of electrons in aromatic compounds will affect the hydrogen bonding in water. The positively charged surface charge of Bisphenol-A-Polycarbonate is able to reduce the acidity of the solution and accelerate the decomposition reactions of H2 and O2 by the water electrolysis method. Bisphenol-A-Polycarbonate coating is a good inhibitor for graphite electrodes. Coated graphite electrodes have a lower corrosion rate than pure or uncoated graphite electrodes. The layer inhibits the degradation of the material caused by electrochemical events during the water electrolysis process. Bisphenol-A-Polycarbonate (BPA) layer, which acts as an inhibitor and a catalyst simultaneously during the water electrolysis reaction, causes hydrogen production to increase.
THE EFFECT OF ADDITION BISPHENOL-A-POLYCARBONATE FROM CD-R WASTE AS A CATALYST FOR HYDROGEN PRODUCTION Mas'ud, Sifa'ul; Sulaiman, Abdul Mudjib; Syahputra, Hogi; Purnami, Purnami
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 2 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.02.1

Abstract

In producing hydrogen, various methods can be used, one of which is the electrolysis of water. Electrolysis is a method for breaking water molecules into oxygen and hydrogen by using an electric current. Electrolysis does not require complicated equipment and systems, so it can be said to be the easiest method of producing hydrogen. But of the various methods for producing hydrogen, the electrolysis method is not widely used because of its low efficiency. Because of this, many efforts have been made with the aim of increasing hydrogen production in the electrolysis of water. In this paper, we use Bisphenol-A-Polycarbonate (BPA) compounds obtained from unused CD-R layers. BPA has aromatic compounds that have been tested by FTIR. Aromatic compounds can generate their own magnetic field; this magnetic field is used to disrupt hydrogen bonds in water so that the electrolysis process can be more optimal. It is also known that, on the surface of BPA, it has a tendency to be positively charged by FESEM testing. The predominantly positive BPA surface works effectively to attract OH- ions. This causes a lot of H+ ions to move freely so that the solution becomes more acidic, which results in easier mobility of electric currents. With the addition of 3 grams of BPA, it can produce 46% more ppm of hydrogen than conventional.  
THE EFFECT OF ELECTRODE COATING FROM BISPHENOL-A-POLYCARBONATE CD-R WASTE FOR HYDROGEN PRODUCTION Sulaiman, Abdul Mudjib; Mas'ud, Sifa'ul; Daroini, Ahmad Najih; Purnami, Purnami
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 1 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.01.2

Abstract

Water electrolysis is a method that utilizes direct electric current to decompose water into O2 and H2. The productivity of hydrogen produced in the electrolysis of water is low. One of the main reasons for the low electrolysis efficiency of water is the resistance of the electrode material. The electrode that is often used in the electrolysis of water is a graphite electrode. The coating on graphite electrodes can be a solution to minimize material degradation at the electrodes. With the condition that the coating material is able to slow down the damage to graphite electrodes and is a good electrical conductor. In this study, we used polycarbonate material as a material for coating the electrodes. The polycarbonate material that will be used is obtained from electrical waste, namely CD-R. The polycarbonate was separated mechanically and then ground to a powder with a size of 400 m. Polycarbonate powder will be coated on the cathode surface by the thermal coating method. Polycarbonate contains Bisphenol A compound which has an aromatic ring. The presence of a magnetic field caused by the delocalization of electrons in aromatic compounds will affect the hydrogen bonding in water. The positively charged surface charge of Bisphenol-A-Polycarbonate is able to reduce the acidity of the solution and accelerate the decomposition reactions of H2 and O2 by the water electrolysis method. Bisphenol-A-Polycarbonate coating is a good inhibitor for graphite electrodes. Coated graphite electrodes have a lower corrosion rate than pure or uncoated graphite electrodes. The layer inhibits the degradation of the material caused by electrochemical events during the water electrolysis process. Bisphenol-A-Polycarbonate (BPA) layer, which acts as an inhibitor and a catalyst simultaneously during the water electrolysis reaction, causes hydrogen production to increase.
THE EFFECT OF ADDITION BISPHENOL-A-POLYCARBONATE FROM CD-R WASTE AS A CATALYST FOR HYDROGEN PRODUCTION Mas'ud, Sifa'ul; Sulaiman, Abdul Mudjib; Syahputra, Hogi; Purnami, Purnami
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 2 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.02.1

Abstract

In producing hydrogen, various methods can be used, one of which is the electrolysis of water. Electrolysis is a method for breaking water molecules into oxygen and hydrogen by using an electric current. Electrolysis does not require complicated equipment and systems, so it can be said to be the easiest method of producing hydrogen. But of the various methods for producing hydrogen, the electrolysis method is not widely used because of its low efficiency. Because of this, many efforts have been made with the aim of increasing hydrogen production in the electrolysis of water. In this paper, we use Bisphenol-A-Polycarbonate (BPA) compounds obtained from unused CD-R layers. BPA has aromatic compounds that have been tested by FTIR. Aromatic compounds can generate their own magnetic field; this magnetic field is used to disrupt hydrogen bonds in water so that the electrolysis process can be more optimal. It is also known that, on the surface of BPA, it has a tendency to be positively charged by FESEM testing. The predominantly positive BPA surface works effectively to attract OH- ions. This causes a lot of H+ ions to move freely so that the solution becomes more acidic, which results in easier mobility of electric currents. With the addition of 3 grams of BPA, it can produce 46% more ppm of hydrogen than conventional.  
Co-Authors Daroini, Ahmad Najih Purnami Purnami Sulaiman, Abdul Mudjib Syahputra, Hogi