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Environment Projects (6)

Sandra Dusolt
No Power, No Water, No Food, No Problem

The purpose of this experiment was to test whether a biofilter for growing food in a confined space can breakdown pollutants and remove harmful bacteria from both grey water and sewage so that the water can be reused. A second objective was to show that biofilters can clean water, grow food, produce energy, and clean the air.
Stand 27

Azza Abdel Hamid Faiad
Production of Hydrocarbon Fuel by Catalytic Cracking of High Density Polyethylene Wastes

It was estimated that the total consumption of plastics in Egypt is 1000,000 tones. This paper aims to present advantageous and environmentally friendly method of managing polyethylene plastic wastes, by converting them into fuel feed-stocks through catalytic cracking over different catalysts. Three experiments were designed with different three catalysts (clay-Y-zeolite-commercial aluminosilicate) with concentration 20% and the other parameters were fixed. Products were analyzed by gas chromatography. According to the results it was found that Commercial aluminosilicate catalyst gave the highest yields among these experiments while zeolite gave the lowest yields. This technology can provide an economically efficient method for production of hydrocarbon fuel namely: cracked naphtha of about 40,000 tons per year and hydrocarbon gases of about 138,000 tons per year equivalent to 78,000,000$.
Stand 28

Hassan Ahmed
The Miracle of Living by Termites

The project aims to use the ecological niche of termite colonies which feed on paper product wastes for the benefit of humans. The project proposed using termites to produce hydrogen as a renewable energy source. Experiments were conducted using a bio-reactor constructed to grow a colony of termites on cardboard and sugar cane straw as food sources, at different temperatures and constant moisture conditions. Bio-reactor Soil analysis showed high potassium, phosphor and nitrogen contents. Experiments results showed that a medium sized colony (about 2 million termites) can produce about 227 liters of hydrogen per day. It was concluded that many environmental problems can be solved using termite colonies: paper products waste can be managed through termite digestion; soil present in the bio-reactor can be used as fertilizer; the hydrogen produced can be used as a renewable source of energy.
Stand 29

Yomna Yasser Mohamed
A Biofuel for the Poor

The aim of this project is to produce a clean and green source of energy that could be easily accessible by the poor. And since most rural populations are farmers, my idea revolves around producing a bio-fuel, where all its ingredients could be manufactured locally. To stay away from the food chain, I have selected the Jatropha Plant to investigate whether its oil, methanol, and KOH, which are blended to make bio-diesel, could be produced using different parts of the plant. This project will also look into the design requirements of a local blending plant terminal, where the biodiesel could be produced around the Jatropha plantations.
Stand 30

Uku-Laur Tali
Growth Potential of Short Rotation Willow Cuttings

In current research the early growth of short rotation willow cuttings was studied, since competition in short rotation coppices (SRC) can effect early production of coppice greatly. Cuttings of 4 clones were grown in laboratory conditions. The results showed significance between cutting diameter and biomass production. No connection between clone and shoot production was determined, however clones showed different root production in early growth. The addition of fertilizer to the growth environment showed positive effect on rooting but addition of SRC soil had negative effect on both rooting and shoot growth. In conclusion the suggested cuttings used in coppices should have large volume. Clones that have faster rooting (e.g. Tora) and pre-fertilization could be used for positive effects. Further studies in this subject are required for more efficient use of short rotation coppices.
Stand 31

New Zealand
Bailey Lovett
Bacterial Bivalves

The subject of my project was investigating microbial contamination of shellfish in the Riverton/Aparima area in Southland, New Zealand. The project was instigated due to a significant number of complaints from the public concerning the quality of shellfish in the area, especially after heavy rainfall. My investigation focused specifically on Greenlip mussels and cockles in the area, which were heavily harvested by members of the Riverton community. My investigation concluded that the current shellfish gathering guidelines were unsuitable for the level of faecal contamination incurred after heavy rainfall, and so environmental regulations for shellfish gathering in the area were altered to ensure the health and safety of the public when gathering shellfish, a widely consumed food group in Southland.
Stand 32