The research aims to identify structure of Na2MnPO4F/C as a sodium battery composite material has been successfully synthesized through solid state method with various carbon concetrations 0, 3, 5 and 7 wt% as conductive carbon. The source of carbon comes from citric acid (C6H8O7). The syntesized sample were characterized XRD, SEM-EDX, PSA and FTIR. X-Ray Diffraction (XRD) results show that all of samples have formed to monoclinic structure with space group P21/n and signal linked to residual carbon in not detected. The crystal size tends to decreasing with addition of carbon concentrations. The crystal size of Na2MnPO4F with 7 wt % carbon is 137,09 nm. SEM-EDX analysis shows that the higher of carbon concentration the carbon distribution tends to be more homogeneous. Base on particle size analyzers have shown that Na2MnPO4F/C particle size is getting smaller and the particle size distribution tends to be homogeneous along with the increasing of carbon concentration. Identification of the functional group with FTIR obtained Mn-O stretching, PO4 stretching, dan C-C stretching.
The fuel production machinery from used tire waste, is a device that works by utilizing the concept of pyrolysis. In the engine reactor, used tires made from polystyrene, which is a long chain hydrocarbon, will experience a cracking process into shorter chain hydrocarbons. The steam from the heating will then be distilled into the reactor. This fuel production machine from used tire waste can be a solution for alternative sources of liquid fuel energy production, in this case sourced from waste tires which are increasingly worrying. For this reason, with this oil processing machine, it is hoped that it will reduce the impact caused by this used tire waste. and besides that it can make a useful fuel.
3D Printing commonly is known as additive manufacturing. It works by adding layer by layer resulting in a three dimensional shape. Using color change filament materials are safe to use for medical purposes. The parameters used in this study are layer height, print speed and print temperature. The most percentage of contributions is affected in the taguchi experiment of dimensional accuracy namely; layer height (51.196%), and Brinell Hardness Number namely; print speed (61,097%). The optimal parameters resulting of the taguchi experiment's dimensional accuracy are layer height (0,10 mm), print speed (40 mm/s) and print temperature (195 o C). The optimal parameters resulting of Brinell Hardness Number are layer height (0,10 mm), print speed (20 mm/s) and print temperature (205 o C).
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