Cellulosic Ethanol

Lignocellulosic biomass is an abundant and inexpensive feedstock for the production of bio-products, ethanol, and other bio-fuels. Commercial biomass to ethanol has been hindered by production and technological barriers, including:

  1. Pretreatments that are ineffective, expensive, and toxic,
  2. Low product conversions and concentrations,
  3. High cellulase enzyme loading levels and costs,
  4. High process energy, chemical, and water usage,

Bio-Process Cellulosic Platform: Bio-Process has developed a set of integrated technologies and processes that allows for the efficient and profitable production of bio-ethanol from a wide variety of cellulosic biomass materials at minimal energy usage and operating costs, technologies include:

  1. A low cost, non-toxic, & highly effective, pretreatment process,
  2. Production of a variety of bio-products from 5-C xylose,
  3. Integrated reaction & hydrolysis system for enzyme recycle,
  4. Efficient reaction / separation systems to reduce energy use,

BPI Cellulosic Process Advantages:

  • Robust Process for All Types of Biomass,
  • Production of a Variety of Co-Products ,
  • Low Enzyme & Chemical Usage Rates,
  • High Conversion Yields & Efficiencies,
  • Lower Capital Investment Requirement,
  • Versatile Xylose / Arabinose Products,
  • Energy Efficient Product Separations,

Over the last 25 years, Bio-Process has developed, demonstrated, and improved the processes and technologies that allow the major barriers to cellulosic ethanol production to be overcome. These technologies have been optimized and co-developed to work in an integrated system, and include:

Low Temperature Steep Delignification (LTSD): The LTSD pretreatment is the most effective, economical, and efficient process available for the breakdown of biomass structure. This highly is effective at mild operating conditions and loading levels, has lower operating costs, and allows higher product yields than other toxic and costlier alternative pretreatments.

Continuous Reactor Separator (CRS): The CRS bio-reactor systems simultaneously hydrolyzes, ferments, and strips ethanol from biomass feedstocks, allowing 1) increased conversion rates & efficiencies, 2) decreased energy usage, and 3) recycle of nutrients, chemicals, and enzymes.

High Gravity Fermentation: BPI has developed reactors, process technologies, and organisms for the processing of high solid biomass mashes (10 – 15%) in the fermentation of high product solution concentrations (5 – 7%).

5C Sugar (Xylose) Utilization: BPI has developed and improved strains of yeast and bacterial able to utilize both glucose and xylose in fermentation to producing organic acids, chemicals, ethanol, and single cell protein & algae biomass.

Plug Flow Cellulase Reactor: BPI is currently developing a low-cost system for the on-site production of cellulase enzymes, in which a portion of the incoming biomass feedstock is diverted in the production of a ‘crude cellulase/biomass’ stream.

Low Energy Distillation: BPI has designed, developed, and commercialized low energy, non-fouling, distillation systems for the recovery and purification of bio-solvents. Associated energy savings for a 10 mmgy cellulosic ethanol facility would be in the $2 – $4 million per year range.

Through the utilization of the BPI cellulosic technologies in concert, the barriers to profitable commercial cellulosic ethanol production can be overcome. The BPI technology platform, changing economic conditions, environmental concerns about green house gasses, governmental support, and decreases in the price of commercial cellulase, have created opportunities for commercial production of ethanol and other bio-based products from lignocellulosic biomass.

To learn more about the Bio-Process cellulosic platform, process technologies, or system integration, please contact us.

Copyright Bio-Process 2013

Panorama Theme by Themocracy