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All Journal TEKNIK Program Kreativitas Mahasiswa - Karsa Cipta
Mudzofar Sofyan
Teknik Kimia, Fakultas Teknik, Universitas Diponegoro
Engineering Other

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DIPO PURE, ALAT PEMURNI AIR SEBAGAI SOLUSI PENANGANAN AIR ROB Heydar, Roqy; Sofyan, Mudzofar; Muslihudin, Mohammad; Putri, Prafitra Asih Rahmawati Sinar; Suhandono, Steven
Program Kreativitas Mahasiswa - Karsa Cipta PKM-KC 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.945 KB)

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Currently, the effort to overcome the tidal water disaster is merely raising the ground level which tend to be difficult and ineffective. The solution is done by using the water as drinking water with the help of water purifier. The purpose of this program is to characterize tidal water, prototyping tools, and characterize the resulting water. This water purifier is designed to use three kinds of macro filter namely silica sand, activated carbon, zeolite, and the membranes Reverse Osmosis. In addition, the tool is equipped with a photocatalyst that functions to neutralize organic compounds. Reverse Osmosis Membrane equipped with backflush process to extend the life of the membrane. Tidal water test results in Laboratory of PDAM TirtaMoedal shows some parameters that exceed drinking water quality standard, dissolved solids is 1848 mg/lt of quality standard of 500 mg/l, levels of Chloride is 1692 mg/l of quality standard of 250 mg/l, Ammonia levels is 1.28 mg/l of quality standard of 1.5 mg/l, levels of Manganese is 0.522 mg/l of quality standard of 0.1 mg/l. Then the results of lab tests show that the water output of this tool is potable, it’sindicated by dissolved solids was reduced to 10 mg/l, Chloride level is 5.98 mg/l, Ammonia level is 0.1 mg/l and Manganese level is 0,006 mg/l. Thus, it can be concluded this water purifier is capable of purifying water rob into potable water.Keywords: Tidal water, rob water, water purifier, reverse osmosis, potable water
OPTIMASI VARIABEL YANG PALING BERPENGARUH PADA PEMBUATAN BIODIESEL DARI MINYAK BIJI RANDU DENGAN PROSES TRANSESTERIFIKASI Sofyan, Mudzofar; Tanjung, Ilham; Santosa, Herry
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (895.753 KB) | DOI: 10.14710/teknik.v35i1.7028

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[Title: Biodiesel Production from Kapok Seed Oil with KOH Catalyst Using Two Steps Transesterification Process] Biodiesel is one of diesel fuel alternative made from renewable resources such as vegetable oils and animal fats. One of the natural ingredients that can be used as a material in the production of biodiesel is kapok seed. The existence of relatively abundant raw materials is a great opportunity to be developed into alternative energy options which developed on a commercial scale. Biodiesel from kapok seed oil can be made through a two-stage transesterification reaction which helped by using a base catalyst. This research aims to characterize the kapok seed oil, determine the most influential variables between temperature, the ratio of methanol-oil, and time against yield by the factorial design method, optimization variables that most influence on yield, and characterize the biodiesel. Two-stage transesterification process using KOH as the catalyst with changing variables: temperature, methanol-oil ratio, and time. The result showed that kapok seed oil has FFA content: 17.97% and a saponification number: 172.55 mgKOH/g. Most influential variable is the variable of time. At the variable optimization of time, the result were optimally obtained at the 105th minutes with yield: 77.39%. The characterization results of biodiesel’s product show from seven parameters of testing, four parameters are required in accordance with SNI.
Co-Authors Herry Santosa Ilham Tanjung Mohammad Muslihudin, Mohammad Prafitra Asih Rahmawati Sinar Putri, Prafitra Asih Rahmawati Sinar Roqy Heydar, Roqy Steven Suhandono, Steven