The Effectiveness of Small-Scale Anaerobic Digesters in Reducing Carbon Dioxide Emissions


Greetings Steemians and Stemgeeks!

Welcome to my #stemsunday edition here on the blockchain.

Quick Announcement

For those of you unfamiliar with my academic background, I studied conservation biology and that is primarily where my passions are concentrated. A requirement of my studies was to prepare a bachelors thesis on an approved topic, and submit it to the chair of the department to be approved in order to receive my degree once my studies had been completed.

My thesis was on the topic above and was very well received at the university so for the next few #stemsunday posts I would like to share my research with you. I spent countless hours researching empirical articles, gathering information, analyzing case studies, and interpreting statistical analysis from scientists and engineers.

Many of the graphics you will see were created by me any additional graphics used to enhance the paper will be sourced. All of my writing will be sourced at the end of each post as well.

I offer this thesis to the community to share knowledge, engage with you, and ultimately ensure that my work will be preserved here on the blockchain.

Each post will be modified from the original version to better suit stemgeeks readers and provide a more enjoyable experience instead of just copy and pasting my thesis. That would just be boring!

I hope you enjoy this project of mine and I look forward to any comments you would like to offer!

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Abstract

The use of anaerobic digesters reduces carbon dioxide emissions directly and indirectly by acting as an alternative energy source and by using the digested slurry as an alternative fertilizer, respectively.

The use of anaerobic digesters reduces the amount of solid waste that is put into landfills and also reduces the amount of waste that is incinerated. After a short period of time the benefits of using anaerobic digesters will be realized.

It will take 2.77 years of operation of a household sized digester to negate the total amount of carbon dioxide emissions created form its operation completely. It is estimated that after 20 years of using an anaerobic digester, the amount of carbon dioxide emissions reduced could be as large as 15198.90kg.

Net emissions over a 20 year cycle of using biogas versus conventional heating will result in a decrease of 25.06 tons of carbon dioxide emissions, the total emissions from the biogas production processes over 20 years is equivalent to that of 11.37% of what is emitted by coal burning plants over the same period of time.

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Introduction

As previously stated, this stemgeeks series will share my thesis with the community and show the effectiveness of small-scale biogas generators in their ability to reduce carbon dioxide (CO2) emissions.

There are many major environmental factors that play a role in the development of mankind in the near future. The availability of fossil fuels and natural resources, along with their consumption are decreasing which contributed to climate change.

Being equipped with the means and ability to do so, many more developed countries (MDCs) have begun efforts to look towards new, clean, and sustainable energy sources.

Implementation of biogas systems may not come so easily for developing countries that are just beginning to utilize fossil fuel combustion for energy and development. Less developed countries (LDCs) are faced with the challenge of improving energy efficiency, while at the same time advancing infrastructure and sustaining their surrounding environment to protect resources.

A few countries have already begun to implement biogas programs that have shown varied results of success.

Sources of Entire Thesis

Emissions of greenhouse gases in the United States. Hazardous Waste Consultant, 29(5):1.5-1.20.

H. Modeloni, M. Moletta-Denatj, O. Ramalhoj, C. Roussellei, S. Wenischc, and I. Zdanevitchk, 2011. Assessment of biogas potential hazards. Renewable Energy, 36(12):3445-3451.

Stem Sunday

Please check out the #stemsunday initiative by @stem.curate here.

Proud @stem.curate curator.

Comments 5


Thanks for share your thoughts

Posted using Partiko Android

24.11.2019 09:22
1

Post edit: I updated the post to show all sources used for the entire thesis for reference.

24.11.2019 09:28
1

Cool! I know this is research, but I hope you ultimately wrap it up with a how-to.

24.11.2019 11:06
1

your this work thesis will be helpful for all of us and my pray may Allah bless you with great success.

24.11.2019 12:26
0

Howdy sir badger! This is really interesting information! I'm not very clear on just what anaerobic digesters are though, tiny organisms?

30.11.2019 17:51
0