EXTRACTION OF OIL FROM PLANT LEAVES
Plants for long have been useful to human beings in many ways,ranging from;
1.Being eaten as food
2.Used as fuel.
3.Used as curatives for diseases.
4.Used as perfumes .
5.Used as spices.
For this reason this project aims at extracting useful essential oils from plants ,for which the oils can be used as concetrates for treating diseases, providing flavours ie citric from oranges, mosquito repellents from lemon grass,cough and flu treatment from eucalyptus oil etc.
PROCESS FOR EXTRACTION
The process will involve designing the extractor using a pressure cooker , condenser unit,collector and separating funnel ie
Evaporator for steam — condenser unit — collector — separator.
Plant leaves are collected from gardens ,chopped into small pieces, placed in a pressure cooker which is then heated.By steam distillation, steam then passes through the leaves which escapes with the oil. The steam and the oil then passes through the condenser unit which condenses the steam into liquid ( water and oil). The liquid is then collected and separated with a separating funnel to obtain oil as a pure extract.
When the project takes shape the oli shall solve a number of problems in our society, which include;
1.Aquiring pure organic oils used as herbs.
2.Having useful oils which can be used as mosquito repellents.
3.Having natural flavours for the soft drinks.
All student projects include the consideration of safety elements.The students are putting on gaggles and lab coats to protect them from hot liquids.
The production of essential oils in
Wampeewo is a very good project but inorder for us to meet the demand of the clients we have to increase on the production of the oils.
This Project involves growing vegetables like cabbage ,eggplants spinach to help supplement the students diet at school.Urban farming involves utilizing polythene bags and sacks where soil.mixed up with manure is put and seedlings are put.Urban farming is very useful because it helps to preserve the environment and avoid littering.
. MAKING PAPERBAGS
video for paper bag making
In this video students make paper bags which are used are used for packing in goods to reduce on the polythene bags in the school. They are also sold to the parents at school and the money go from them is used to help fund
PROBLEM STATEMENT:There are increased cases of malaria around school this is due to the failure to fight mosquitoes in their adult stage by using mosquito nets . A quick method that can help get rid of mosquitoes at an earlier stage[larvae] could help reduce the malaria cases in schools. This is to be done by setting up mosquitoes traps.
OBJECTIVES:To design a mosquito trap using locally available materials.To collect data from the sick bay and from mosquito traps.To analyse the collected data.To senstise the community about the relevancy of mosquito traps using the collected data.
THE TRAP DESIGN
Empty plastic bottles.
Piece of sieve net
CellotapeRice water/ water mixed with yeast
Black polythene paper
One plastic bottle is cut at the bottom .Another plastic bottle is cut to make a funnel.
The mouth of the funnel is fitted with a piece of sieve net.The funnel is then fitted with the plastic bottle whose bottom was cut off.
The bottle is covered with black polythene paper to make the inside dark and this makes the mosquitoes feel safe to breed in the traps.
Rice water/water with yeast attracts mosquitoes since they produce carbondioxde.
The trap design is in such a way that rice water can be changed by use of the bottle cover at the bottom.
The mosquito traps are designed and placedat different spots around the school.
The data is collected using google forms and analysed by STEM members
PICTURE OF A MOSQUITO TRAP.
The graph shows that the malaria cases reduced with an increase in mosquito traps in the school showing that the project has been effective.
Samples of mosquito traps made by the STEM students (2020-2021)
The students trying to put the traps in the breeding places for the mosquitoes.
A water tank one of the breeding places of the mosquitoes.
PAPER RECYCLING PROJECT
. 80percent of the litter collected from classes is paper which makes our compound untidy. Paper being 100 percent recyclable, Recycling most of these papers collected as rubbish to make different items would help make the school tidy and also learn how to make different things from paper for other uses such as decoration,photo frames ,pen holders.etc.
PROJECT OUTLINE ( procedure)
Papercollection.Waste paper is collected from all classes and offices and kept in sacks by the students in STEM.
The paper is sorted accordingly regarding to whether paper is news print,white paper or card board.
After sorting,the different kinds of paper are torn into small pieces and socked in water differently for some time probably 18 hours.
SCREENING AND DRYING
. At this stage socked paper is put through screens( nets with small openings) to drain out the water.
. After most of the water is drained out,the screened paper is placed on a cotton cloth on a table and dried under the sun.
. After drying , the paper is folded into different products according to what is desired.
So far the project has produced paper pen holders,success cards and paper decorations.
These are sold to students and staff and the money collected is used to support students in STEM with scholastic materials.
- paper is recyclable.
- Paper takes 6-8 weeks to decompose
- Team work makes things better this was exhibited through all the processes involved in this project.
Sarah holding a pencil holder that has been made from recycled paper.