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Showing posts with label biology science fair projects. biology projects. Show all posts
Showing posts with label biology science fair projects. biology projects. Show all posts

Thursday, 15 March 2012

BioGas Plant Digester Home Experiments for students

BioGas Digester Home Experiments For Kids
BioGas Plant Digester Home Experiments for students


This is a contribution of home experiments, that is sure to be very useful:

Procedure:

1) use a container in square or cylindrical concrete, iron or clay and place it outdoors in the sun.

2) The lid of the container (concrete, iron or plastic) must be crossed by a tube to the outlet of the bio-gas. A water seal as shown in the figure does not let the gas escape.

3) Fill the container of wet products (manure, organic wastes such as straw, dead leaves, etc)

4) You must leave an empty space between the waste and cover, plus or minus 1 / 4 of total volume.

5) Keep it uncovered for 10 days, you should remove it every day.

6) Now, you must set the cap, starting the process of fermentationwithout air (anaerobic)

7) After ten days the methane gas (biogas) invade the space above the waste and can be used for 50 days for heating elements in the kitchen.

8) After this period, empty the digester will be charged again for another cycle.

9) The waste make excellent fertilizer for crops



Biogas Experiments For Kids - How does a biogas plant?

In the agricultural biogas plants are used to generate energy from waste.What happens there?

A biogas system in agriculture – an image which we see future perhaps more frequently

Are organic compounds made of air, then they begin to decompose, then they say, they “rot”. That may be dead plants, but also dead animals.These bacteria are responsible for decomposition, which have specialized to live without oxygen. Therefore they are called in experts “anaerobic” bacteria.

As products of this decomposition, a mixture of methane and carbon dioxide and other gases in small amounts. It is also formed less than 1% hydrogen sulphide.

The described decomposition process takes place everywhere in nature where naturally adjusts itself to an air termination, including swamps, or dunghill. In addition to the gases formed as a reaction product also digested sludge.

How does a biogas plant?

The natural decomposition processes in nature are the inspiration for modern biogas plants. The starting materials are first into a vat, or “digester” called. Remain in that fermenting the raw materials for several days. The bacteria do their work and degrade these substances, it constantly creates biogas. To increase the effectiveness, the starting materials in the fermentation tank are stirred.

The resulting biogas is cleaned and dried. To use, it must be saved. The speed of decomposition and thus the biogas production also depends on the temperature inside the digester, so it is heated to temperatures around 40 ° C. After the decomposition of biomass residues are fermented into a sludge tank.

What raw materials are used in a biogas plant?

There are basically all types of waste biomass. These include liquid manure (“manure”), solid manure, agricultural waste, slaughterhouse waste, green waste, food waste from restaurants or the content of the widespread urban organic waste bins.

What to do with the resulting biogas?

The methane in biogas is one caused by burning fuels dar. its energy is converted into heat energy. This allows combustion engines converted to operate, which in turn use a generator to produce electricity. The resultant residual heat (“heat”) can be used as domestic heating, agriculture, or used to heat the digester.

What happens to the Bioren from the sludge tank?

This biomass can be used in agriculture as fertilizer. Because it forms when spread on fields no longer smells, the acceptance of such fertilizers is very high. During the decomposition of the starting materials and the seeds of weeds are killed, what is the fertilizer with the remaining mass is desired.

Biogas plants also have disadvantages?

Yes. Biogas is very toxic and explosive. Improper handling of the biogas and non-compliance with requirements for plant safety are risk factors in the operation of such facilities. It came in the past to serious accidents in biogas plants, some of fatalities. Even the technology used in some cases not mature, it was already too explosions with injuries of those involved.

Biogas (Methane) Making Experiment

Advanced Experiment: Making Methane



The natural gas we use in our homes is composed mostly of methane that took millions of years to form from decomposing organisms deep underground. You can mimic the natural gas formation process by using decomposing vegetable matter to create biogas.
Biogas is different from natural gas. It contains methane and carbon dioxide, but not the wide variety of hydrocarbons found in natural gas. However, the conditions that create biogas most rapidly in your experiment are the same conditions that were most favorable for the creation of natural gas millions of years ago.

Materials:
  • 6 identical small-necked bottles (plastic water or soda bottles work well)
  • 6 large party balloons, not inflated
  • 1½ cups of soil
  • 2 cups of a mixture of vegetable scraps and grass clippings
  • Duct tape
  • Funnel
  • Measuring cup
  • Permanent marker
Directions:
  1. Mix the soil and vegetable scraps well. Divide up the mixture into six equal portions of about ½ cup each. Put one portion into each bottle.
  2. Stretch an uninflated balloon over the opening of each bottle and secure it with duct tape.
  3. Use the marker to indicate on each bottle the level of the mixture. Put the date by your mark.
  4. Place the bottles upright in the following places. (Be sure to let the adults in your home know what they are for so they won’t be disturbed!)
    • In the fridge
    • In the freezer
    • In direct sunlight
    • In artificial light
    • Under the kitchen sink
    • Near a heat source
  5. Observe the bottles every other day for 10 days. When you observe them, use the marker to indicate on each bottle the level of the mixture (put the date by your mark). Also measure the circumference of each balloon daily and record this along with the date.
  6. Chart your results.
  7. Dispose of the mixtures outdoors, away from flames.
Analysis:
  • What was the relationship between the levels of the mixtures and what happened to the balloons?
  • In which locations did the balloons grow biggest, and why? In which locations did the balloons grow the least, and why?
  • Compare your experiment’s results and the conditions that allowed for the formation of natural gas deposits millions of years ago.
Further Research:
Do some library or Internet research to find out where and how biogas is made, and what it is used for.

Saving Hot Water Science Fair Project

Saving Hot Water  Science Fair Project

Saving Hot Water
Grade Levels: K-3
Question:
Does it save more water to take a shower or a bath?
Hypotheses:
It takes more/less water to take a shower than a bath.
Materials: A bathtub with a shower Bath crayons - 2 colors (If a bath crayon is not available, tape may be used.)
Procedure:
1. Have each member of your family plug the drain when taking a shower for one week.
2. Measure the amount of water used by marking the water level on the side of the tub with the crayon. Use one color for marking shower levels.
3. The next week, have each person take a bath instead of a shower. Make sure the amount of water used in the same way. This time use the other bath crayon.
Analysis and Conclusions:
Compare the amount of water used for baths and showers for each member of your family. Which saved water and energy in your house?

kitchen waste biogas
Contact for Homemade kitchen waste biogas plant Projects
science fair projects
Free Winning Science Fair Projects Step-by-Step How-To-Do Resources Ideas, Urdu
Biogas Plant Blog
Biogas is alternative source of green energy our world future
Science Fair Projects Blog

Tuesday, 7 February 2012

Research based Biology Science Fair Projects


Germs and Us
Sathya Sai School of Canada  -  Toronto, ON
      
Lockheed Martin Canada
Summa Cum Laude Award -  $80.00
Primary Fluid Systems " Best in School" Award - $50.00
Abstract: To determine where germs thrive in our immediate environment and what is the effective way to avoid getting sick by them. I assumed that toilet seat will have most germs. However, Unclean money (coin) had the most amounts of bacteria instead of the toilet seat. Also, the most effective cleaning agent was the hand sanitizer. [ Pls listen to Audio 'Project Overview' ]
Project Number: 5046
Grades: 4-6   Biology
Comments:    Your experiment was both meticulously carried out and informative. Thank you.

 
Ascochyta Blight in Chickpea
Evan Hardy Collegiate  -  Saskatoon, SK
      
Enterprise Saskatchewan
Summa Cum Laude Award -  $500.00
Abstract: Some chickpea lines are either resistant or susceptible to ascochyta blight depending on the A. rabiei isolate. We plan to compare the rate of phytotoxin production in these incompatible and compatible interactions which may contribute to understanding of the pathogen’s race-structure.
Project Number: 5009
Grades: 10-12   Biology
Comments:   

 
Don't Drink From The Carton!
South Island Distance Education School  -  Victoria, BC
      
Enterprise Saskatchewan
Summa Cum Laude Award -  $80.00
Abstract: Often times my parents have reminded me to not drink directly from beverage container but instead to pour them into a cup. With this project I would like to find out if there is an increased amount of bacteria that enters a beverage when you drink it directly from the bottle or carton and if so how significant is it.
Project Number: 4792
Grades: 4-6   Biology
Comments:   

 
Living Dinosaurs
Simons Valley Elementary School  -  Calgary, AB
      
University of Regina - Faculty of Science
Summa Cum Laude Award -  $80.00
Primary Fluid Systems " Best in School" Award - $50.00
Abstract: This project will be about living dinosaurs of today. One example of these creatures is the Coelacanth.
Project Number: 4390
Grades: 4-6   Biology
Comments: An example of a very good VSF descriptive project. The image sources are given, a student make video is provided and a puzzle is included.    An attractive website and an interesting topic!. I like the blue colour choice for your background colour. You had a couple of words in pink that may be more difficult for people to see. The electrosensory mechanism you talked about is quite interesting. You have included a lot of good information in your project. Very few editing errors, especially for the length of your project. Your video loads quickly on a Mac but is slow to load on a P.C. The special effect background on your video is effective.

 
The Black-Tailed Prairie Dog
Spruce Ridge School  -  Estevan, SK
      
University of Regina - Faculty of Science
Summa Cum Laude Award -  $100.00
Transport Canada Award - $50.00
Abstract: This project describes the black-tailed prairie dog and its adaptations for survival in a grasslands habitat. The project also discusses some of the reasons prairie dogs disappeared as humans began to use and change its habitat. It also explores human actions resulting in the recover of prairie dog populations.
Project Number: 4425
Grades: K-3   Biology
Comments: Another great project from the students of Spruce Ridge School. Audio commentary in the movie would have been a nice addition.   
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