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Biogas for School Cafeteria

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JAKARTA - Katiana Din Doeana, Queen Sugih Ariyani, and Caecilia Sherina jumped with joy as they study the first declared the winner of L'Oreal Girls Science Camp, held at the Bella Campa, All days, late last month. "Yes! Yes! Yes!" third-grader shouted SMA Bina Nusantara XI Serpong it.

Of the 15 high school teams from Jakarta, Bogor, Yogyakarta, and Kalimantan, their study entitled "Biogas Goes to School" is considered the most feasible achieve savings amounting to Rp 5 million, trophies, certificates, and a collection of science books. Four winners of the competition National Fellow L'Oreal L'Oreal-UNESCO for Women in Science, which jury competition themed "Playing with Energy Smart", was agreed to choose a third study 16-year-old female student was the winner.

Katiana Research and two friends were originated from a rubbish heap of grass behind their school. "Our school has an area of parks and sports fields for more than one hectare," said Katiana. In two weeks, heavy garbage can reach 700 kilograms of grass.

During this school has been "mengkomposkan 'trash to make fertilizer. But they believe that garbage could be more useful for energy saving. "Gas in the grass can be used as a source of waste energy for the school canteen, for example," said the Queen.

With bright basic knowledge they gain from the Internet and the guidance of two teachers, Katiana, Queen, and Caecilia try to test the existence of gas content in the waste by making use of pot the former grass. Initially, the waste water poured tape grass mixed with the sugar composition of 25 liters of clean water, 2.5 kilograms of tape, and one kilogram of sugar. Rubbish which had been given water and sugar tape sealed with black plastic. "We try to be no room for air and sunlight during the fermentation process," said the Queen.

During the two-week fermentation process took place, no fiddling with the three pots of grass are garbage. "What we worry about only if there is a rat or a cat that tore open the pot lid. If that happens, drop our research," said Katiana.

All three girls are also doing a comparison study to obtain representative results using nonrumput compost mixed with water, sugar, and a tape with the same dose. "We want to see how big the success of biogas from waste grass research we do," said Katiana. "Research with compost nonrumput already been done. If using a trash grass, our knowledge no one has studied."

After the fermentation process is completed, they test the content of biogas by using a pipe that is inserted into pots and pots of compost garbage nonrumput grass. They then memantikkan fire to determine levels of biogas produced in the second pot. The result, the amount of biogas produced from compost more waste than the biogas from grass, when viewed from the large fire at the end of the pipe.

Caecilia assumes total weight of the biogas produced from 700 kilograms of waste grass can reach 35 pounds. "The results were based on assumptions from the literature," he said. "We have yet to measure with detailed kilogram weight. But concrete results."

L'Oreal victory in the competition has sparked enthusiasm in continuing their studies to measure the weight of the biogas produced from processed 700 kilograms of waste grass. "If the result is reached 35 kilograms of biogas, biogas is trying out our plans in the school canteen," said Caecilia.

In addition to further save costs, "will provide benefits for the school," he said.

When calculated based on cost, biogas is more efficient cs Katiana works when compared to LPG, because the biogas weighing 35 kilograms equals three 12 kilogram LPG cylinder size. Suppose that the price of one kilogram LPG cylinder 12 USD 70 thousand, then three LPG cylinder means USD 210 thousand. Whereas in making 35 kilograms of biogas from grass trash, they just do not spend more than USD 20 thousand to buy sugar and tape. "So this biogas can save costs by USD 190 thousand," said Caecilia.

Wiratni, researchers and lecturers from the University of Gajah Mada, who became one of the jury, stating very impressed with the original idea of Bina Nusantara High School Serpong. "We were very pleased when at the end of their presentation says, 'Imagine if other schools do it also, how much can we save energy." We're happy because my level Binus schools with serious attention to energy issues, "said the winner of the National Fellow in 2007 was L'Oreal.

Bina Nusantara High School guidance counselor Serpong, Maya Anggraini, very pleased to welcome siswinya's third victory. "Katiana, Queen, and Caecilia is student achievement. Katiana very communicative, Queen science ability is very good, and Caecilia excellent presentation skills. In addition, all three clearly have the academic ability above average," said Maya. Selection of research handed over entirely to three different girls class that originally did not know each other's. "We're just helping the extent necessary."

Binus addition, SMA Negeri 1 Mount Sindur, Bogor, and the second SMA Kandangan, South Kalimantan, became the second and third winners of this competition. "Fragrant Briquettes from Buffalo Dirt" and "Fish Oil from Waste Nonkolesterol Tauman," which became the title of the research from two schools that are considered to be applicable in conserving energy in everyday life.

Corporate Communications & Public Relations Manager of L'Oreal Indonesia Kridaman Melanie said it was pleased to see much enthusiasm from Indonesian teenager who follow this competition. "For the first time we are working with education offices in all districts and municipalities in Indonesia. As a result, there are 15 teams that became a finalist," he said. | AMANDRA Mustika M


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