cr³8 project work slides

Project Title: Recycling of food Project Title: Recycling of food wastewaste

Cr³8(Group2 ) Cr³8(Group2 ) members:members:

>Wei Ywin>Wei Ywin

>Jasmine>Jasmine

>Hong Rui>Hong Rui

>Yong Quan>Yong QuanName of Name of Supervising Supervising Teacher:Teacher:>Mr Ng Yong >Mr Ng Yong ShengSheng

Content Content PointsPoints

Choice & ActionsChoice & Actions Choice: Recycling of food wasteChoice: Recycling of food waste Focus:Focus: Food compost Food compost Key Questions & research on themKey Questions & research on them

Choice & Choice & ActionsActions

Choice & FocusChoice & Focus

Choice: Recycling of food wasteChoice: Recycling of food waste

Focus: Food compostFocus: Food compost Actions to be takenActions to be taken

Making the artifactMaking the artifact

Making the visual/ graphic presentationMaking the visual/ graphic presentation

Choice: Recycling of Choice: Recycling of food wastefood waste

making compost from a wide range of food making compost from a wide range of food wastewaste

plan and/or perform investigation on its plan and/or perform investigation on its effect on growth of plants/ selected plantseffect on growth of plants/ selected plants

teach residents/ students on how to make teach residents/ students on how to make compost to be used at home or in gardens in compost to be used at home or in gardens in residential areasresidential areas

generate biogas from food wastegenerate biogas from food waste

Choice: Recycling of food wasteChoice: Recycling of food wastemaking compost from a wide range of making compost from a wide range of

food wastefood waste Materials used to make the artifactMaterials used to make the artifact>Tea bags>Tea bags

>Coffee powder>Coffee powder

>Banana skins>Banana skins

>Plastic container>Plastic container

>Egg shells>Egg shells

>Peanut shells>Peanut shells

>Soil>Soil*-plant seeds into the artifact*-plant seeds into the artifact

Week 1

Choice: Recycling of food wasteChoice: Recycling of food wastemaking compost from a wide range of making compost from a wide range of

food wastefood waste Properties of the materials used to make the Properties of the materials used to make the

artifactartifact>Tea bags>Tea bags


>Banana skins>Banana skins

>Plastic container>Plastic container

>Egg shells>Egg shells

>Peanut shells>Peanut shells

>Soil>Soil*-plant seeds into the artifact*-plant seeds into the artifact

Week 1

Focus: Food Focus: Food compostcompost

In order to In order to plan and/or perform investigation plan and/or perform investigation on its effect on growth of plants/ selected on its effect on growth of plants/ selected plantsplants, we need to know more about food , we need to know more about food compost.compost.

Compost can be Compost can be richrich in nutrients. in nutrients. It benefits for the land in many ways, It benefits for the land in many ways,

including as a including as a soil conditionersoil conditioner, a , a fertilizerfertilizer, , addition of addition of vital humusvital humus or or humic acidshumic acids and as and as a naturala natural pesticidepesticide for soil. for soil.

Choice: Recycling of food wasteChoice: Recycling of food wasteplan and/or perform investigation on plan and/or perform investigation on

its effect on growth of plants/ its effect on growth of plants/ selected plantsselected plants Investigation on “effect on growth of Investigation on “effect on growth of

plants/selected plants”plants/selected plants” With the food compost acting as a With the food compost acting as a soil soil

conditionerconditioner or a or a fertilizerfertilizer which eventually which eventually contain contain mineralsminerals, the plants will grow , the plants will grow healthierhealthier than plants without food compost. than plants without food compost.

Choice: Recycling of food wasteChoice: Recycling of food wasteplan and/or perform investigation on plan and/or perform investigation on

its effect on growth of plants/ its effect on growth of plants/ selected plantsselected plants

FactsFacts found out doing the “ found out doing the “experimentexperiment”” Effect on the growth of plants growing using Effect on the growth of plants growing using

food compostfood compost

Choice: Recycling of food wasteChoice: Recycling of food wasteteach residents/ students on how to make teach residents/ students on how to make

compost to be used at home or in gardens in compost to be used at home or in gardens in residential areasresidential areas How to make the artifact?How to make the artifact?

You will need the following items:You will need the following items:

>Tea bags tea inside the tea bags must be taken out)>Tea bags tea inside the tea bags must be taken out)


>Banana skins cut into tiny pieces)>Banana skins cut into tiny pieces)

>Plastic container not smaller than B3 size)>Plastic container not smaller than B3 size)

>Egg shells crashed into tiny pieces)>Egg shells crashed into tiny pieces)

>Peanut shells crashed into tiny pieces)>Peanut shells crashed into tiny pieces)

>Dry soil>Dry soil*-plant seeds into the artifact*-plant seeds into the artifact

Choice: Recycling of food wasteChoice: Recycling of food wasteteach residents/ students on how to make teach residents/ students on how to make

compost to be used at home or in gardens in compost to be used at home or in gardens in residential areasresidential areas How to make the artifact?How to make the artifact?

Step 1Step 1:mix the items together :mix the items together Step 2Step 2:place a thin layer of soil to act as the base in :place a thin layer of soil to act as the base in

the plastic container.the plastic container. Step 3Step 3:place a thin layer of the mix items on top :place a thin layer of the mix items on top

of the thin layer of the soil.of the thin layer of the soil. Repeat Repeat Step 2Step 2 and and Step 3Step 3 respectivelyrespectively till the till the

container is filled to the brim.**container is filled to the brim.***-the *-the last layer last layer on the top of the container must be a thin on the top of the container must be a thin

layer of layer of soilsoil..

*-water the seeds everyday and wait for the plants to grow *-water the seeds everyday and wait for the plants to grow for weeks.for weeks.


generate biogas from generate biogas from food wastefood waste AdvantagesAdvantages of biogas generated from food waste of biogas generated from food waste

Biogas could potentially help reduce global climate Biogas could potentially help reduce global climate change. change.

utilization of biogas would generate enough electricity to utilization of biogas would generate enough electricity to meet up to three percent of the continent's electricity meet up to three percent of the continent's electricity expenditureexpenditure

saving fossil fuels, time collecting firewood, money and saving fossil fuels, time collecting firewood, money and cooking timecooking time

protecting forestsprotecting forests using crop residues for animal fodder instead of fuelusing crop residues for animal fodder instead of fuel improving hygienic conditions, the rural standard of living, improving hygienic conditions, the rural standard of living,

and reducing air and water pollutionand reducing air and water pollution producing high-quality fertilizerproducing high-quality fertilizer enabling local mechanization and electricity productionenabling local mechanization and electricity production


generate biogas from generate biogas from food wastefood waste Examples of countries using of biogas Examples of countries using of biogas

generated from food waste generated from food waste North AmericaNorth America In North America, utilization of biogas would generate In North America, utilization of biogas would generate

enough electricity to meet up to three percent of the enough electricity to meet up to three percent of the continent's electricity expenditure. continent's electricity expenditure.

GermanyGermany Germany is Europe's biggest biogas producer as it is Germany is Europe's biggest biogas producer as it is

the market leader in biogas technology. the market leader in biogas technology.


generate biogas from generate biogas from food wastefood waste Examples of countries using of biogas generated Examples of countries using of biogas generated

from food waste from food waste United KingdomUnited Kingdom On the 5th October 2010, biogas was injected into the UK On the 5th October 2010, biogas was injected into the UK

gas grid for the first time. Sewage from over 30,000 gas grid for the first time. Sewage from over 30,000 Oxfordshire homes is sent to Didcot sewage treatment Oxfordshire homes is sent to Didcot sewage treatment works, where it is treated in an anaerobic digester to works, where it is treated in an anaerobic digester to produce biogas, which is then cleaned to provide gas for produce biogas, which is then cleaned to provide gas for approximately 200 homes.approximately 200 homes.

IndiaIndia In India, Pakistan and Bangladesh biogas produced in In India, Pakistan and Bangladesh biogas produced in

small-scale digestion facilities is called small-scale digestion facilities is called gobar gasgobar gas; it is ; it is estimated that such facilities exist in over two million estimated that such facilities exist in over two million households in India and in thousands in Pakistan, households in India and in thousands in Pakistan, particularly North Punjab, due to the thriving population of particularly North Punjab, due to the thriving population of livestock. livestock.


generate biogas from generate biogas from food wastefood waste Examples of countries using of biogas Examples of countries using of biogas

generated from food waste generated from food waste ChinaChina There are 30 million rural households in China that There are 30 million rural households in China that

have biogas digesters.have biogas digesters. United StatesUnited States With the many benefits of biogas, it is starting to be With the many benefits of biogas, it is starting to be

utilized in the United States more. In 2003, the United utilized in the United States more. In 2003, the United States consumed 147 trillion BTU of energy from States consumed 147 trillion BTU of energy from "landfill gas", about 0.6% of the total U.S. natural gas "landfill gas", about 0.6% of the total U.S. natural gas consumption.consumption.

Key Key QuestionsQuestions Can every food waste be made into compost?Can every food waste be made into compost? What is biogas?What is biogas? Are there any Are there any other effectother effect on food waste on food waste

when we do the decomposing of food when we do the decomposing of food waste? Are there other places to have waste? Are there other places to have decomposing of food waste taking place decomposing of food waste taking place besides the garden?besides the garden?

Give at least 5 examples and state clearly Give at least 5 examples and state clearly what you have found out. what you have found out.

Explain what will happen if small quantity of Explain what will happen if small quantity of weed killer is added into the food compost?weed killer is added into the food compost?

cr³8 project work slides

Business

food waste biogas

recycling of food waste

food waste advantagesof

food compost actions

food waste north america

plants investigation

plants factsfound

utilization of biogas