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Firdaus, Mochamad Adha
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Chemical Engineering, Chemistry & Bioengineering

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TiO2/Chitosan bioplastic as Antibacterial of Stephylococcus aureus for Food Preservation Kustiningsih, Indar; Barleany, Dhena Ria; Abriyani, Devi; Ridwan, Asep; Syairazy, Muhammad; Firdaus, Mochamad Adha
World Chemical Engineering Journal VOLUME 5 NO. 1 JUNE 2021
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v5i1.12115

Abstract

Nowadays, bioplastic development become hot trends to assess environmental issues. Many materials have been purposed to be the best resources for bioplastic manufacturing. Chitosan is one of the most abundant resources in which could derivates from biomaterial waste called chitin. TiO2 nanoparticles incorporation within biomaterial presumably not only enhance its mechanical properties but also improve biocompatibility of medical characteristic such as bacterial annihilation. From this study, it was shown that small amount of TiO2 nanoparticles within chitosan bioplastic prove improvement of both characteristic. Nevertheless, it was also slightly increasing material durability to degrade.
Syngas Production by the Gasification of Bayah’s Coal over Ca(OH)2 and Na2CO3 catalyst Heriyanto, Heri; Nahudin, Ahmad; Amyranti, Mutia; Firdaus, Mochamad Adha; Suhendi, Endang; Kosimaningrum, Widya Ernayati
World Chemical Engineering Journal VOLUME 4 NO. 1 JUNE 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i1.10589

Abstract

Official data of Indonesia’s coal reserve provided by government in 2014 approximately reached 104.8 billion tonnes. Bayah as a part of South Banten region has been stored quite amount of coal. Gasification is one solution to utilize Bayah’s coal potential. Coal Gasification is a conversion process of solid phase coal into synthetic gas mixture (CO, H2). Main reaction of the process involves Boundouard and Water-Gas-Shift reaction. The aim of experiment was to observes influence of several variables such as : Air Fuel Ratio (AFR), Temperature, and Catalyst at particular condition. Gasification process becomes beneficial when ratio of synthetic gas mixture (H2/CO) exhibits 2.0. Synthetic gas mixtures were analyzed by using gas chromatograph method. 300 grams of Bayah’s coal (14 – 18 mesh) were gasified in updraft type of fixed bed reactor using steam injection under Air Fuel Ratio varied between 1.5, 2.0, 2.5, temperature of 600°C, 700°C, 800°C and catalyst of Ca(OH)2 and Na2CO3 . Air Fuel Ratio of 1.5 and 800 with the help Ca(OH)2 catalyst tended to produce the optimum result for H2/CO ratio which obtained a value of 1.98. Synthetic gas composition  at this variation reached 33.8% for Hydrogen and 17.1% for Carbon Monoxide.
Co-Authors Abriyani, Devi Amyranti, Mutia Asep Ridwan Endang Suhendi, Endang Heriyanto, Heri Kosimaningrum, Widya Ernayati Kustiningsih, Indar Nahudin, Ahmad Syairazy, Muhammad