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Bio-Gas

Introduction

Wet Waste or Organic waste is increasing at an alarming rate which is posing a grave danger to the cities and its environment, not only in India but the world over. Municipal Corporations globally are grappling with the problem of ever-increasing organic waste.

Methane which is a by-product released when the organic waste is left untreated at landfills is a major cause for our environmental degradation. Methane gas is 21 times more potent than Carbon-dioxide emitted due to undeterred used of fossil fuels by humans.

At Gaia Green, we provide a total solution for converting wet or organic waste along with other waste like manure, sewage, municipal waste, plant material, and crops to Methane gas which then can be used for various purposes like cooking or even generating electricity, which prevents Methane gas to be released in the environment causing further damage to our already endangered environment.

OUR SERVICES

Small Scale Biogas Plant

In small-scale Biogas plants, food and vegetable waste come under decay waste which is a deliberate environmental and economical responsibility all around the world.

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Large Scale Biogas Plant

Industrialized countries commonly use biogas digesters where animal dung, and widely fuel crops are used as feedstock for large-scale biogas digesters.

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Biogas Technology

Biogas is a mixture of gases produced by the breakdown of organic matter in the absence of oxygen. Biogas is produced by anaerobic digestion with anaerobic bacteria or fermentation of biodegradable materials such as manure, sewage, municipal waste, wet or organic waste, plant material, and crops.

Benefits & Advantages of Bio-Gas

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1. Biogas is an Eco-Friendly

Biogas is a renewable, as well as a clean, source of energy. Gas generated through bio-digestion is non-polluting; it actually reduces greenhouse emissions (i.e. reduces the greenhouse effect). No combustion takes place in the process, meaning there is zero emission of greenhouse gasses to the atmosphere; therefore, using gas from waste as a form of energy is actually a great way to combat global warming.

 

2. Biogas Generation Reduces Soil and Water Pollution

Overflowing landfills don’t only spread foul smells- they also allow toxic liquids to drain into underground water sources. Consequently, yet another advantage of biogas is that biogas generation may improve water quality.

 

3. Biogas Generation Produces Organic Fertilizer

The by-product of the biogas generation process is enriched organic (digestate), which is a perfect supplement to, or substitute for, chemical fertilizers. The fertilizer discharge from the digester can accelerate plant growth and resilience to diseases, whereas commercial fertilizers contain chemicals that have toxic effects and can cause food poisoning, among other things.

 

4. It’s A Simple and Low-Cost Technology That Encourages A Circular Economy

THE BIOGAS CYCLE

The technology used to produce biogas is cost effective. It is easy to set up and needs little investment when on a small scale. Small biodigesters can be used right at home, utilizing kitchen waste and animal manure. A household system pays for itself after a while, and the materials used for generation are absolutely free. The gas manifested can be used directly for cooking and generation of electricity. This is what allows the cost of biogas production to be relatively low.

 

5. Healthy Cooking Alternative For Developing Areas.

Biogas generators save women and children from the daunting task of firewood collection. As a result, more time is left over for cooking and clean. More importantly, cooking on a gas stove, instead of over an open fire, prevents the family from being exposed to smoke in the kitchen. This helps prevent deadly respiratory diseases.

 

  • Advantages include less emission of the greenhouse gasses methane, CO2 and nitrous oxide..

 

  • Environment friendly recirculation of organic waste from industry and households.

 

  • Less odour when spreading slurry on the fields

 

  • Considerably less than normal slurry and the smell dissipates faster.

 

  • Plants absorb fermented slurry better, thus increasing the yield on the fields.

 

  • Protection of subsoil water causes improved nitrogen exploitation reducing leaching and thereby prevents drinking water contamination.

 

    • Reduced costs of artificial fertilizer.

 

  • It provides clean, gaseous fuel for cooking and lighting.

 

  • Chemical fertilizers can be done away with since the digested slurry obtained from the biogas plants can be used as enriched bio-manure.

 

  • It is good for the climate and solves sanitation problems since toilets can be linked directly with biogas plants.

FAQ’s About Bio-gas

Biogas is a consequent of the decomposition of organic matter by anaerobic bacteria. Biogas is typically composed of 60% methane and 40% CO2. It is similar to natural gas which is composed of 99% methane. Biogas is a clean and renewable energy that may be substituted for natural gas to cook, to produce vapor, hot water or to generate electricity. At room pressure and temperature, biogas is in gaseous form, not liquid like LPG (propane).
Organic waste is put into a sealed tank called as digester (or bioreactor). In the absence of oxygen, anaerobic bacteria consume the organic matter to multiply and produce biogas.
Any organic waste has the ability to produce biogas: human excreta, manure, animal slurry, fruit and vegetable waste, slaughterhouse waste, meat packing waste, dairy factory waste, brewery and distillery waste, etc.
1. Despite popular belief, the amount of waste going in the digester is almost equal to the amount coming out. However the quality of the waste is altered for the better (less odor, better fertilizer, organic load reduced, less polluting) 2. Waste coming out of the digester can be separated (solid/liquid): the solid part can be composted and the liquid part can be used as liquid fertilizer or can be treated further and disposed of.
It always costs money to get rid of waste. If it doesn’t cost you anything, you are probably creating an environmental hazard. By putting a digester in your waste treatment chain you introduce a potential revenue center.
No. There isn’t any odour emanating from a BioGas plant.
Methane is the principal gas in biogas.  Methane is also the main component in natural gas, a fossil fuel. Biogas can be used to replace natural gas in many applications including: cooking, heating, steam production, electrical generation, vehicular fuel, and as a pipeline gas.
Biogas production can reduce the pollution potential in wastewater by converting oxygen demanding organic matter that could cause low oxygen levels in surface waters.  Nutrients, like nitrogen and phosphorous are conserved in biogas effluents and can be used to displace fertilizers in crop production.
While combustion of biogas, like natural gas, produces carbon dioxide (CO 2 ), a greenhouse gas, the carbon in biogas comes from plant matter that fixed this carbon from atmospheric CO2.  Thus, biogas production is carbon-neutral and does not add to greenhouse gas emissions.  Further, any consumption of fossil fuels replaced by biogas will lower CO2 emissions.
Biogas can be made at home or at a business from food waste, yard and grass trimmings, and some organic solid wastes.  However, efficient use of biogas is more readily accomplished at larger scales. A typical home might cook for an hour per day on biogas from home waste sources.
Methane has a greenhouse gas (GHG) heating factor 21 times higher than CO 2 . Combustion of biogas converts methane into CO 2  and reduces the GHG impact by over 20 times. By extracting methane out of waste and using it to produce heat and/or electricity we ensure that the waste will not degrade in an open environment therefore reducing direct methane atmospheric emissions. Moreover, the energy provided by the biogas is likely to displace fossil fuel which is the main contributor to GHG emissions. Biogas energy is considered carbon neutral, since carbon emitted by its combustion comes from carbon fixed by plants (natural carbon cycle).
A biogas plant is like an animal. You must feed it every day and feed it the right stuff in the right amount. Just like an animal if you don’t take good care of it, it will become ill and will yield poor results.
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