High-quality co-product lignin

The process also produces natural, unarnished lignin of a quality not available on the market today and which is an enabler of entirely new products generations / applications.

lx-process | major applications


The LX-Process cracks 2G biomass and can readily be adapted for large-scale 2G ethanol manufacturing but is also inversely scalable, enabling economic retrofit of smaller, decentralized biogas plants.


The LX-Process eliminates a principle hurdle faced in bio-processing, namely the presence / concentration of inhibitors, which are formed in all existing 2G pre-treatment methods.


The LX-Process produces an unparalleled quality of natural lignin as a co-product. This quality is not available today and promises to enable a host of new, disruptive technologies a variety of areas.

applications | summary

2G Biofuels

  • In today’s biogas plants, approximately half of the substrate ends up as fertilizer because the bacteria cannot metabolize it. The “LX-pretreatment-process” essentially cracks this digestate, making it available for fermentation and increasing efficiency / yields by up to 100%.
  • Economically viable in small-scale environment (> 500kWEL)
  • Retrofit of existing biogas plants easily done on a modular basis
  • Operating flexibility vastly improves as a whole range of new substrates, such as agricultural straws, can be fermented
  • Technology operates at low temperatures (70°C), enabling use of residual waste heat
  • Economics on a larger scale (e.g. 2G Bioethanol) are even more compelling
  • Potential for additional revenue stream from co-product (high-quality lignin)
  • Highly favorable ecological impact (“food vs. fuel”)

2G Biochemicals

  • 1st generation biochemical manufacturing processes (i.e. using food feedstocks instead of crude oil) are rapidly developing for many chemical intermediates and polymers.- Most bio-based products, such as 1,4 butandiol (BDO), succinic acid, acrylic acid and adipic acid, are considered to be “drop-in” replacements for their petrochemical counterparts.
  • Furthermore, unique bio-based polymers (without a petrochemical equivalent) are also developing quickly, with Polylactic acid (PLA) already being widely used today for a wide range of (biodegradable) products.
  • By implementing the LX-Process, all of these products (and many more) can be manufactured from 2G feedstocks!
  • All biochemical applications promise to profit immensely from increased operating flexibility as a whole range of new substrates, such as agricultural straws but also wood, can be used.
  • Potential for additional revenue stream from co-product high-quality lignin
  • Highly favorable ecological impact (“food vs. fuel”)

Natural Lignin

  • Lignin is a non-toxic, extremely versatile and highly abundant raw material with excellent adhesive and dispersant characteristics.
  • The lignin available today is mostly tarnished and of a low quality, i.e. the different production processes chemically alter the lignin and leave impurities (sulfur, carbohydrates) and inhibitors that cannot be economically removed.
  • The LX process allows for a virtually unparalleled grade of soluble, sulfur-free lignin with very little residual carbohydrates.
  • This opens the floodgate for entirely new generations of products to be developed, for example:
    1. as an additive for various plastics,
    2. as an additive in paints, resins and glues,
    3. as a raw material for carbon fiber,
    4. as a part replacement for phenol in phenol resins, and
    5. for the production of natural aromas, i.e. for the food industry.
technology | overview of process
technology | overview of process

LX Pretreatment Process

  • Lignin is the complex polymer responsible for the woodiness of plants and typically accumulates over time, filling the space between the cellulose strands and imparting the plant the strength to grow larger (in many ways similar to the role that concrete fills in a steel-reinforced structure).
  • The patented the proprietary “LX-Process” essentially cracks the lignin strands, exposing the cellulose and hemicellulose, both of which are essentially complex sugars, and makes all three components available and separable for further processing.
  • Technically, the LX-Process involves a chemical pretreatment cycle at normal atmospheric pressure and low temperatures (ca. 70°C), followed by precipitation of the cellulose and lignin and separation / filtration of each component.
  • The low temperatures make the technology perfectly suitable to take advantage of residual waste heat.
  • Low temperature and pressure allow for a virtually unparalleled grade of soluble, sulfur-free lignin with very little residual carbohydrates.
  • In total, 26 patents have been issued and 17 more applied for globally.
lx-integration | video

LX-Process – workflow and application

The film shows the basic steps in breakup of lignocellulosic biomass such as corn stover, cereal straws, bagasse, empty fruit bunches as well as the integration into a bio-methane production or a bio-refinery. The subsidiary of LXP Group GmbH for the biogas market is maxbiogas GmbH.