Riadini Wanty Lubis
Fakultas Teknik, Universitas Muhammadiyah Sumatera Utara

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Pemanfaatan Adsorben dari Tongkol Jagung sebagai Karbon Aktif untuk Mengurangi Emisi Gas Buang Kendaraan Bermotor Safri Gunawan; Hanapi Hasan; Ria Dini Wanty Lubis
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (679.526 KB) | DOI: 10.30596/rmme.v3i1.4527


This research utilizes corncob waste as activated carbon to be adsorbent. The objective of this research is to obtain the effect of corncob and sago powder as matrix composition in reducing vehicle exhaust gas emission. The composition used is 60 grams in every dough. It will be tested three times experimental which is 80:20, 70:30, 60:40 of corncob and sago powder variation of the composition, respectively. The result shows that the number of CO, HC, and CO2 decreases to 0.24%, 75.87%, and 5.9%, respectively. The conclusion from this research show that activated carbon from corncob greatly affect exhaust gas emissions in a vehicle.
Rancang Bangun Acwh Dengan Model Tanki Horizontal Dan Penambahan Pcm Sebagai Isolator Dari Sumber Panas Irham Rosadi; Chandra Amirsyahputra Siregar; Ahmad Marabdi Siregar; Riadini Wanty Lubis; Fahri Fadillah; Moranelo M
Rekayasa Material, Manufaktur dan Energi Vol 5, No 2: September 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i2.11722


Into several stages, namely design, material selection and manufacture. The design uses solidworks 2013 software which includes frame design, tank design, Helical-Coil heat exchanger design and the stage of uniting components designed to be able to flow refrigerant heat to water. The stage of making the tool follows from the design that has been made, namely the frame using angle iron (L) with dimensions of 750mm x 390mm x 1500mm, the tank uses a stainless steel plate and the addition of PCM around the tank with a capacity of 60 liters and an overhaul of the compressor outlet flow that is routed to the Helical-Coil heat exchanger made of copper with a diameter of 6.35mm with APK dimensions 150mm x 300mm or half of the tank height. From the test results, ACWH can work well as evidenced by not using PCM, increasing water temperature with the addition of PCM reaching 60.25 oC within 7 hours of testing, while not using PCM water temperature reaching 60.17 oC within 10 hours.
Analisis Kesetimbangan Massa Dan Rendemen Pada Sistem Distilasi Daun Nilam Menjadi Minyak Atsiri Muharnif Mukhtar; Riadini Wanty Lubis; Suherman .; Nanang Pat Sumantri Mariono
Rekayasa Material, Manufaktur dan Energi Vol 6, No 1: Maret 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i1.14504


Indonesia is one of the largest essential oil producing countries in the world and is supported by natural resources with climatic conditions, soil and plant species that are very suitable for the growth of patchouli plants. The use of essential oils today is not only as a raw material for fragrances and cosmetics but also in the health sector. One of the basic ingredients for producing essential oils is patchouli. The main thing that needs to be considered in the processing of this essential patchouli oil is the yield it produces. This study aims to analyze the mass balance and yield in the processing of patchouli essential oil in a distillation system with 5kg, 4kg, 3kg patchouli leaf raw material variations. Distillation of patchouli leaves was carried out using the steam and water distillation method with a temperature in the kettle not exceeding 100 oC for 6 hours. The main variables in the processing of patchouli leaves into essential oil are distillation efficiency and the yield obtained. The more mass of patchouli leaves used, the more it will increase the distillation efficiency of 79.7%, 82.1% and 82.4% as well as the yield of the resulting oil increased 1.67%, 1.7% and 1.78%