Browsing by Author "Zulfansyah, Zulfansyah"

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    Pembuatan Pulp Dari Rumput Gajah (Pennisetum Purpureum) Dengan Menggunakan Pelarut Organik Asam Formiat
    (wahyu sari yeni, 2019-01-09) Syahputra, Dede; Helwani, Zuchra; Rionaldo, Hari; Zulfansyah, Zulfansyah
    Elephant grass is lignocellulosic material that has the potential as raw material in pulping process. The objective of this research is to study effect of operational condition on the characteristic of pulp. Effect of the process condition were studied by Response Surface Methodology (RSM) with Central Composite Design (CCD). Pulping Experiment were carried out at the boiling temperature of cooking liquorat atmospheric pressure with 40 gram of elephent grass with a concentration of formic acid were 60%, 70%, and 80%, cooking time were 60 minutes, 120 minutes, and 180 minutes, solid to liquor ratio were 10/1, 15/1, and 20/1, and catalyst HCl was 0,1%. The result showed that pulp of the elephant grass have yield pulp of 53,6% - 73,7%, lignin content of 11% - 19,5%, with burst index of 2,38 – 4,24 kPa.m2/g, tear index of 2,57 – 21,95 mN m2/g, and tensile index of 47,93 – 205,491 Nm/g.
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    Pengaruh Kondisi Proses Terhadap Karakteristik Pulp Pada Fraksionasi Rumput Gajah (Pennisetum Purpureum) Menggunakan Asam Formiat
    (wahyu sari yeni, 2019-01-09) Dizikri, Dizikri; Helwani, Zuchra; Rionaldo, Hari; Zulfansyah, Zulfansyah
    Elephant grass (Pennisetum purpureum) is a lignocellulosic biomass which has not been utilized optimally. Fractination of elephant grass can be converted into valuable products, such as pulp. The objectives on this research is to study the effect of the process condition on pulp yield, cellulose and lignin contetnt in pulp. The effect of process condition were studied by Response Surface Methodology (RSM) using Central Composite Design (CCD). Fractionation of elephant grass performed on a normal boiling point of the solution with a concentration of formic acid (60%, 70% and 80%), the reaction time of 60-180 minutes, solid to liquid ratio of 10/1 to 20/1, 40 grams elephant grass, HCl catalyst 0.1% wt. The result shows that fractionation of elephant grass have yield pulp of 53.6% to 73.7%, cellulose pulp of 84.03% to 93.97% and lignin pulp of 11% to 19.5%. the concentration of formic acid and reaction time influence each response significantly
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    Performa Kompor Gasifikasi Champion Stove
    (wahyu sari yeni, 2019-01-09) Julita, Retna; Rionaldo, Hari; Andrio, David; Zulfansyah, Zulfansyah
    Energy requirements for houshold cooking needs still depend on LPG (Liquefied Petroleum Gas). However, the lack of LPG supply and poor distribution are still obstacles in the community. Biomass waste is one of the alternative fuels for society so that cooking energy needs can be met. The objective of research is to study the effect of type of biomass and biomass size on the performance of gasification stoves by using a water boiling test (WBT) analysis. The experiments were carried out in batches with two WBT phases, namely cold start and hot start. The first stage was a cold start, where the tester uses a stove at room temperature an a number of fuels to boil 2.5 liters of water in a standard pan. The second stage was called the hot start test, where water is boiled with a hot stove with the aim of identifying the difference in the stove’s power when it’s cold and when it’s hot. In addition, the flame temperature and stove operating time are the performance parameters of the stove champion gasification stove. Water content for each biomass used is between 10-13%. The thermal efficiency of gasification stove was in the range of 19-36%. The result showed that combustion rate was in the range of 12-23 gr/minutes and fire power of 3-7 kWth. The maximum flame temperature produced by the stove is 806 oC using mahogany wood. The longest operating time using acacia wood was 38.22 minutes.