Biogas is a renewable gas produced by the decomposition of organic waste materials in the absence of oxygen. This waste is called feedstock, consisting of organic materials like food waste, manure, plant material, wastewater, sewage, etc., and this process is called Anaerobic Digestion (AD). Biogas can further be upgraded into RNG, a pipeline-quality gas interchangeable with conventional natural gas, used for heating, electricity generation, or other applications. Learn more about how we help optimize your biogas production.

Anaerobic Digestion is the process where organic materials like agricultural residues, manure, and food waste are broken down by bacteria in a controlled, oxygen-free environment, producing biogas primarily composed of methane. The solid waste from biogas production is called Digestate. This is a nutrient-rich fertilizer. AD offers agricultural producers a sustainable waste management solution, renewable energy production, & soil quality enhancement. Determine the potential of your biogas plant with Anessa AD·A.

Biogas is produced during Anaerobic Digestion, wherein microorganisms break down organic waste materials inside a digester. It produces a mixture of mostly methane gas mixed with CO2. Generally, the steps are as follows:

Feedstock→ AD in Digestor → Capture Biogas→ Upgrade to RNG (optional)→ Digestate Fertilizer

This process also occurs naturally at the bottom of water bodies or swamps.

Anaerobic Digestion (AD) is the process through which Biogas is produced. Organic waste enters a digester, microbes in the absence of oxygen break it down (AD), biogas bubbles up and is captured.

Anessa Suite helps you evaluate feedstock mix, track temperature, monitor conditions, and maximize yield, helping you fine-tune conditions and produce sustainable biogas.

The synergy of Anessa’s digital-twin monitoring and data-driven analytics turns waste into a low-carbon energy you can monetize!

The sealed container inside which the process of AD happens is called a digester. It comes in different shapes and sizes depending on its use and the kind of organic material mix that is being processed.

Different kinds of waste can be processed through anaerobic digestion, like manure from farms, food leftovers from homes and restaurants, organic fractions of municipal solid waste, organic industrial waste, crop residues, and even oils and greases (FOG). Each type of waste has its own characteristics that affect how well it breaks down and what kind of biogas it produces.

Inside the anaerobic digester, different microorganisms break down the waste and create two main things: biogas and digestate.

Biogas is used for many things, popularly Biogas can be used to generate:

• RNG → Biogas can be upgraded to pipeline-quality methane for direct grid-injection (Green Fuel) or to be used as compressed fuel (CNG).

• Electricity → Biogas can generate enough electricity to power up businesses, turbines, and industrial facilities. It can also be used to power entire houses, especially in rural areas.

• Organic Fertilizer → Digestate, the solid waste left behind after biogas production, can be used to improve soil fertility, preventing nutrient loss for farms and creating circular economy

Renewable Natural Gas (RNG) is upgraded biogas that has been purified to conventional natural gas quality. It’s created by eliminating contaminants like carbon dioxide, hydrogen sulfide, and other remnants from biogas.

Once upgraded, RNG is 90% or more methane and can be combusted for heating, power generation, transportation fuel, or injected into the natural gas distribution grid. Compared to fossil fuels, RNG is a green fuel and is an effective solution for lowering GHG emissions to meet clean energy goals.

Biomethane is another term for RNG. It's the upgraded, high-purity methane rich fuel derived from biogas.

Biomethane can be substituted one-for-one for fossil Natural Gas and can be used in the same pipes, appliances, and engines, as a clean fuel on a much lower environmental cost.

In short:

Biogas = raw gas out of waste (about 60% methane).
Biomethane / RNG= upgraded gas (90%+ methane) suitable for grid or commercial use.

Biogas upgrading refers to the purification of produced biogas to Renewable Natural Gas (RNG) through removal of contaminants and non-methane compounds such as carbon dioxide (CO₂), hydrogen sulfide (H₂S), and moisture.

Raw biogas has up to 60% methane and 40% CO₂, plus trace gases. Upgrading increases the concentration of methane to greater than 90%, so that it's chemically identical to fossil-based natural gas and ready for grid injection, vehicle fuel, or industrial applications.

Upgraded biogas can be utilized just as standard natural gas but has a much lower carbon intensity score. It helps in clean energy transitions, increases biogas plant economic value, and provides access to carbon credit markets and renewable fuel standards.

A crucial part of the renewable energy mix is RNG. It works in parallel to other renewable energy sources to help lower air pollution, smog, and greenhouse gas emissions.

The benefits of RNG become even more important as increased global warming triggers more natural disasters and calamities that result in power failures. RNG is a dependable, storable energy resource that can be used in situations where other fuel sources are unavailable.

Apart from being a clean fuel alternative, RNG also helps expand local energy alternatives, ensuring that people always have access to clean power, especially those who live in remote areas. RNG doesn't require alterationsto a typical home's infrastructure, as some other clean energy sources (wind, solar, etc.) do. Further, it is also priced similarly to other energy sources. Individual households can lower their carbon footprint without making major lifestyle adjustments by switching to RNG.

Biogas can be described as a renewable energy source, due to its dual impact:

• It reduces greenhouse gas (GHG) emissions by capturing atmospheric methane that would otherwise be produced in uncontrolled landfills.

• Transforming waste into clean energy and a nutrient-rich digestate fuels a circular economy. This helps lower pollution and the dependence on synthetic fertilizers, thereby reducing soil erosion

Biogas, in contrast to fossil fuels, is carbon-neutral and, in most scenarios, carbon-negative. It positively contributes to emission reduction. When complemented with favourable technologies and policies, biogas can reach net-zero emissions, encourage independent energy generation, and contribute towards a better environment.

Yes, biogas is a renewable energy source. It creates a circular economy as it is produced from continuously generated organic waste that would otherwise end up in landfills. When utilized, it displaces fossil fuels, prevents landfill emissions and turns waste into energy and natural fertilizers.

Biogas has many environmental benefits, most importantly biogas reduces GHG emissions by capturing methane that would otherwise escape from landfills, wastewater, etc. When upgraded to RNG, it reduces the dependence on fossil fuel and is a clean fuel alternative.

Biogas also helps protect the environment by creating a circular economy as instead of organic waste ending up in landfills, it goes through AD and methane is captured. The residue left behind from this process, digestate, is used as a natural fertilizer replacing synthetic fertilizers. This enriches and protects soil health.

By controlling the production of biogas in enclosed digesters, it minimizes odours, lowers pathogens and reduces air pollution. This helps improve the air quality for local communities.

Biogas is generated by converting organic waste into a renewable energy source. Organic waste decomposes during AD, releasing a methane-rich gas, preventing atmospheric release.

Methane gas is then captured and utilized in the same manner as traditional natural gas: to generate electricity, provide heat, or serve as a fuel for cars. If it is converted to RNG, it can be put directly into the natural gas system. At the same time, digestate can be used as a natural fertilizer to replace chemical alternatives.

The beauty of AD is that it not only produces clean energy but also prevents methane from escaping into the atmosphere, which is a huge win for our planet’s health.

Thus, AD not only creates renewable energy but also creates a circular economy.

Biogas is a highly adaptable option for producing energy. It has multiple uses, including generating day-to-day electricity needs, providing low-carbon heating options, and can be upgraded for transportation fuel. It reduces emissions and alleviates climate change by reusing organic waste, producing renewable electricity, and restoring nutrients to the soil.

Biogas reduces overall emissions by replacing fossil fuels with clean, carbon-neutral (and often carbon-negative) energy, while also promoting a circular economy. Digestate reduces pollutants from artificial fertilizers, while biogas offers societies a consistent, local supply of renewable energy.

In a nutshell, biogas converts waste into an environmental solution, reducing emissions now while laying the groundwork for a more sustainable energy future.