Tanks for Biogas and Biomass Plants

KBK offers a custom line of tanks used in Biogas and Biomass plants.

These include:

  • Digesters
  • Reactors
  • Hydrolysis Tanks
  • Hydro Cyclone Batch Tanks
  • Process Water Tanks
  • Wastewater Tanks
  • Leachate Tanks
  • Effluent Tanks
  • Sludge Tanks

Key Options Include:

  • Manufactured from Carbon Steel, Fiberglass or Stainless-Steel
  • Sized up 18’ x 58’
  • Cone Bottoms
  • Mechanical Hydraulic Mixing w/ Pump
  • Top and Sidewall Mixers with custom mixing beams
  • Heater Panels and Immersion Heaters
  • Gas Tight Tanks
  • Insulation to maintain temperature

Biogas and Biomass Tanks

Biogas and biomass plants are key components in the production of renewable energy. They both utilize organic materials as feedstock but function through different processes. Tanks manufactured by KBK play crucial roles in these processes, serving as reactors, storage, or treatment vessels. Here’s a breakdown of how both types of plants work and the role of tanks in each:

How Biogas Plants Work

  • Feedstock Input: Biogas plants use organic waste materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, or food waste.
  • Anaerobic Digestion: The organic material is broken down by bacteria in an oxygen-free environment within a digester tank. This process produces biogas, primarily composed of methane and carbon dioxide, alongside other trace gases.
  • Biogas Purification: The biogas can be purified or scrubbed to remove impurities and increase its methane content, making it suitable for energy production or to be fed into the gas grid.
  • Energy Production: The purified biogas is then used to generate electricity and heat through combustion in gas engines, used directly for cooking and lighting, or processed into natural gas standards and used in vehicles.

Role of KBK Tanks in Biogas Plants

  • Digesters: These are the main reactors where anaerobic digestion occurs. They must be sealed to prevent oxygen from entering and to allow for temperature control to optimize the bacteria’s activity. Larger facilities typically utilize concrete digesters but in smaller facilities, KBK insulated steel and fiberglass tanks are often used.
  • Storage Tanks: After production, biogas can be stored in tanks until needed. These tanks need to be able to handle the pressure and composition of biogas.
  • Leachate Tanks: Some plants include tanks for storing leachate, the liquid by-product of digestion, which can be treated or used as a fertilizer.

How Biomass Plants Work

  • Feedstock Input: Biomass plants use organic materials like wood chips, agricultural waste, or other plant-based material as fuel.
  • Combustion/Processing: The biomass is either directly combusted to generate heat and power or processed into biofuels such as biodiesel or ethanol.
  • Energy Production: In combustion facilities, the heat generated is used to produce steam that drives turbines, generating electricity. In processing facilities, biomass is converted into liquid fuels that can be used for transport or heating.

Role of KBK Tanks in Biomass Plants

  • Storage Tanks: Before processing, biomass can be stored in large tanks or silos, especially if the biomass is in liquid form or if the plant produces liquid biofuels.
  • Process Tanks: These are used during the chemical processing of biomass into biofuels, where different reactions take place to convert the biomass into usable fuels.
  • Effluent Tanks: Biomass processing can produce wastewater, which is stored in tanks before treatment or disposal

In summary, KBK’s tanks are essential for the operation of biogas and biomass plants, serving a variety of purposes from digestion and storage to treatment. Their design and construction must consider the specific requirements of the materials they hold, such as corrosion resistance, structural integrity under pressure, and, in the case of biogas, gas-tightness.

Biomass Plants

Biomass plants, which convert organic materials into energy, offer numerous benefits across environmental, economic, and social spectrums. These benefits align with the broader goals of sustainable development and renewable energy adoption. Here’s a detailed look at the advantages of biomass plants:

Environmental Benefits

Renewable Energy Source

Biomass energy is produced from organic materials, making it a renewable resource. Unlike fossil fuels, biomass can be replenished through the cultivation of biomass crops, contributing to a sustainable energy cycle.

Reduction of Waste

Biomass energy can be generated from agricultural residues, food waste, and timber waste, reducing the amount of waste sent to landfills and incinerators, and minimizing methane emissions from waste decomposition.

Carbon Neutral Potential

When managed sustainably, biomass plants can be nearly carbon neutral. The carbon dioxide (CO2) emitted during the combustion of biomass is roughly equal to the CO2 absorbed by the plants during their growth, creating a balanced carbon cycle. However, this balance depends on sustainable harvesting and replanting strategies.

Improved Air Quality

By converting waste materials into energy, biomass plants can help reduce open burning of agricultural wastes and municipal solid wastes, decreasing air pollution and improving air quality.

Economic Benefits

Energy Independence

Biomass plants can contribute to reducing dependency on fossil fuels and imported energy, enhancing national energy security and stability.

Local Economic Development

The development of biomass plants can stimulate local economies through job creation in plant operation, maintenance, and in the supply chain related to biomass production and transport.

Diverse Products

Besides electricity, biomass plants can produce a variety of by-products, including biochar (which can improve soil health), heat for district heating systems, and liquid biofuels for transportation, creating multiple streams of income.

Social Benefits

Rural Development

Biomass plants often source materials from rural areas, providing farmers and landowners with additional income and opportunities for diversification, thereby supporting rural economies and communities.

Employment Opportunities

The biomass industry supports employment in various sectors, including agriculture, manufacturing, and energy, contributing to job creation and workforce development.

Energy Access

In remote or off-grid areas, small-scale biomass systems can provide a reliable and renewable source of energy, improving access to electricity and heating, which in turn can improve living conditions and reduce energy poverty.

Technological and Scientific Benefits

Innovation and Advancement

The growing interest in biomass energy has spurred research and development into more efficient and cleaner biomass conversion technologies, such as gasification and advanced biofuels production.


Biomass energy can be used in various forms – electricity, heat, and liquid fuels – making it a versatile option for different energy needs and applications.

Biogas plants offer a multitude of environmental, economic, and social benefits. By converting organic waste into energy, they contribute to renewable energy development, waste management, and even agricultural improvement. Here’s a detailed look at the benefits of a biogas plant:

Biogas Plants

Biogas plants offer a multitude of environmental, economic, and social benefits. By converting organic waste into energy, they contribute to renewable energy development, waste management, and even agricultural improvement. Here’s a detailed look at the benefits of a biogas plant:

Environmental Benefits

Waste Reduction

Biogas plants significantly reduce the volume of waste sent to landfills, decreasing methane emissions from waste decomposition in these landfills. This is crucial because methane is a potent greenhouse gas, far more impactful than carbon dioxide over a 20-year period.

Renewable Energy Production

They produce biogas, a renewable energy source, which reduces reliance on fossil fuels, thus lowering greenhouse gas emissions associated with energy production.

Nutrient Recycling

The by-product of the biogas production process, digestate, can be used as a nutrient-rich fertilizer, reducing the need for chemical fertilizers and promoting the recycling of essential nutrients back into the soil.

Carbon Sequestration

Through the cultivation of energy crops that can be used as feedstock for biogas production, carbon dioxide is captured from the atmosphere, contributing to carbon sequestration efforts.

Economic Benefits

Energy Savings

Biogas plants can generate significant energy savings for individuals and communities by providing a local, sustainable energy source for heating, electricity, and as a fuel for vehicles.

Revenue Generation

The sale of biogas, electricity, and digestate can provide additional income streams for farmers and plant operators. Furthermore, gate fees from accepting organic waste can also contribute to revenue.

Job Creation

The construction, operation, and maintenance of biogas plants create jobs in rural and urban areas, contributing to local economies.

Social Benefits

Improved Sanitation

Biogas plants can play a role in improving sanitation by processing human and animal waste, reducing the risk of waterborne diseases.

Energy Independence

By producing energy locally, communities can become more self-sufficient, reducing their dependence on imported fuels and enhancing energy security.

Agricultural Development

The use of digestate as a fertilizer can improve soil health and fertility, leading to better crop yields and the promotion of sustainable agriculture practices.

Technological and Scientific Benefits

Innovation and Research

The growing biogas sector drives technological innovation and research in renewable energy technologies, improving efficiency and expanding applications.

Flexibility in Feedstock

Biogas plants can process a wide range of organic materials, offering flexibility and the ability to adapt to different local conditions and available resources.

Overall, biogas plants represent a multifaceted solution to several pressing issues, including waste management, renewable energy production, and agricultural sustainability. They exemplify a circular economic approach, where waste is transformed into valuable resources, benefiting both the environment and society.

fiberglass tank
kbk biogas process tank
kbk biomass tank

Hydrolysis Tanks

A KBK hydrolysis tank is a crucial component in the process of anaerobic digestion, especially in biogas plants. It is designed for the hydrolysis stage, which is one of the initial steps in the breakdown of complex organic materials into simpler compounds that can be more easily digested by microorganisms to produce biogas.

How It Works

Initial Breakdown

In the hydrolysis stage, complex organic molecules such as lipids, proteins, and carbohydrates are broken down into simpler molecules like fatty acids, amino acids, and sugars. This process is facilitated by hydrolytic enzymes produced by hydrolytic bacteria.

Preparation for Methanogenesis

The products of hydrolysis are then available for other bacteria in subsequent stages of anaerobic digestion, including acidogenesis and acetogenesis, ultimately leading to methanogenesis, where methane is produced.

Importance in Biogas Production


Hydrolysis is a critical step for the efficient operation of a biogas plant because it determines the rate at which organic material is converted into biogas. Faster hydrolysis can lead to higher biogas yields.

Handling Complex Substrates

Hydrolysis tanks are particularly important when the feedstock includes materials that are difficult to break down, such as lignocellulosic biomass. By effectively breaking down these complex materials, the hydrolysis tank enhances the overall efficiency and effectiveness of the biogas production process.

Design Considerations


Hydrolysis can occur under mesophilic (around 30-40°C) or thermophilic (around 50-60°C) conditions, with the temperature affecting the rate of hydrolysis and the types of bacteria involved.

pH Levels

The tank’s environment, including its pH, is also managed to favor hydrolytic bacteria and optimize the breakdown of complex substrates.

Retention Time

The design considers the necessary retention time, which is the amount of time the feedstock needs to stay in the tank to ensure sufficient hydrolysis. This varies depending on the type of material being processed and the operational conditions.

Hydrolysis tanks are essential for maximizing the efficiency and throughput of biogas plants, especially those dealing with more complex or varied feedstocks. By optimizing the hydrolysis step, these plants can significantly improve the overall yield and effectiveness of biogas production.

KBK Hydrolysis Cone Bottom Tanks are heated and utilize mixing technology.

Contact Us Today

If you're looking for an experienced, reliable storage tank manufacturer for your project, KBK Industries is here to help. Contact us today and we'll be happy to answer any questions you have, and our expert team can provide you with a custom estimate.