Browsing by Author "Amri, T. Ariful"
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Item EFEK VOLUME KOAGULAN CAIR DARI LEMPUNG ALAM DALAM PENGOLAHAN AIR GAMBUT(2017-01-06) Nurwenda; Muhdarina; Amri, T. ArifulCengar clay has been studied as a source of coagulant but did not provide satisfactory results. In this research the effectivity of liquid coagulant was studied by differences volume of liquid coagulant that given to amount of peat water. Liquid coagulant was made by calcination at 700°C for 2 hours and extracted with 0.2 mol H2SO4 solution at 80°C for 2 hours. The liquid coagulant was characterized using AAS. Coagulation of peat water was done using variation of coagulant volume (35,70 and 105 mL) by measuring parameters of color and turbidity. The results of peat water parameters after treatment were compared to PP No.82 of 2001 on Water Quality and Water Pollution Control and PERMENKES 416/ Health Minister/PER/IV/1990 about Drinking Water Quality. Characterization of liquid coagulant showed that the contents of Al(III) was 223.72 mg L-1 and Fe(III) was 10.38 mg L-1. The result of coagulation showed that K 35:700 gave higher removal percentage than the other with removal efficiency of color and turbidity were 88.9 % and 72.4 % respectively . The turbidity result was in accordance with the quality standards of clean water.Item REGENERASI KATALIS CaO DARI CANGKANG KERANG DARAH (Anadara granosa) KALSINASI 800 oC PADA PRODUKSI BIODIESEL(2016-05-10) Suryandari, Aprilia Hapsari; Nurhayati; Amri, T. ArifulCaO can be used as a catalyst in the synthesis of biodiesel. Biodiesel synthesis was strongly influenced by the activity and selectivity of the catalyst. This study find out activity data from CaO catalyst regeneration (derived from blood cockle shells) in the synthesis of biodiesel. Biodiesel synthesis was done on the reaction conditions: catalyst loading 4 g wt, reaction temperature of 60 °C, reaction time of 3 hours, and methanol to oil mole ratio of 6:1 by using CaO catalyst from blood cockle shells calcined at temperature of 800 oC. Catalyst regeneration carried out by washing the catalyst with methanol three times and dried at 105 oC for 12 hours, then the catalyst recalcined at the same temperature as previous treatment for 3 hours. The yield of biodiesel produces in the first reaction cycle using fresh catalyst reaches 84.72%. The second until fourth reaction cycle using used catalyst decreased the yield from 80,12; 75,38; to 69,38%, respectively. This catalyst employed in this work can be recycled very easily during four reaction cycles with high biodiesel yield, so it can reduce the production cost of biodiesel.