Green gas from green waste

B-Four Agro is a company that grows different kind of lettuce for different supermarkets in the Netherlands. With the building of ‘B4-Energy’ it aims to produce two million Nm3 green gas per year. In due time 1,500 Dutch households in the area can benefit from it. B four-Agro consist of an anaerobic digester and an upgrading plant on its property in Warmenhuizen. For input and feedstock the digester will use 16,000 tons of biomass per year, coming from agricultural waste streams from B-Four Agro and agricultural companies in the area. After digesting, which takes about twenty days, the biogas will be upgraded by a CarborexMS biogas upgrading system to pure biomethane. This green gas will be injected in the localgrid to provide households as well as greenhouses and the B-Four Agro culture systems at the end of 2016. Nice detail: ‘Warmenhuizen’ stands for ‘warm houses’.

Agricultural residue is source of income

Sustainable energy from farm-based residue can be a valuable source of income for farmers. The feedstock can be waste from vegetables, food production, or manure from animals that can be used to make natural gasses by fermenting. After aenerobic digestion the biogas can be upgraded by a CarborexMS biogas upgrading system, and become biomethane. Biomethane can be sold and distributed as green gas for households or it can be compressed or liquefied for usage as vehicle fuel. As such, it can be an easy and reliable source of income for companies that are already successful in the agricultural sector.
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Many countries now actively promote biogas upgrading for use in the gas grid. DMT Environmental Technology chooses a robust design and a simple operation because it works best for farms. It is ‘plug and play’ and ‘it works all the time’, according to our clients. 24/7 Support further enhances the already very high level of reliability. Technological flexibility allows for a quick response to changing circumstances.


In this video you will see an explaination of the CarborexMS, by Natalia Frigka, who is Process Engineers at DMT. Natalia shows you the process of the CarborexMS in Lelystad, where DMT built a showcase to inform costumors and partners.