Biofuel up to date

get updated about biofuels

Granbio’s Cellulosic Ethanol From Sugarcane Straw

Brazil’s Granbio is the producer of second generation ethanol from sugarcane straw on a commercial scale (Click here to know more about third and fourth generation biofuels). 10450151_680657768650710_5470902751896477621_nFounded in 2011, this biotech company is controlled by Gran Investimentos S.A. Headquartered in Sao Paulo, Brazil, the company also has an office in San Francisco, CA, USA. Granbio owns a synthetic biology research center and an experimental station to develop new sources of biomass.The Company uses Beta Renewables’ pretreatment technology Proesa®.


Granbio makes use of cane straw both left out and burnt in the cane fields. The company maintains alliances with first-generation factories for supplying its feedstock. Apart from this, sugarcane straw is collected from local fields too.

Some other giants in the field of cellulosic ethanol production are Beta renewables and Du Pont utilizing variety of agricultural residuesPOET-DSM and Abengoa Bioenergy utilizing mainly corn crop residues and INEOS Bio utilizing organic part of municipal solid waste,  industrial wastes and other lignocellulosic waste.

Granbio Technology

Granbio applies multiple technologies for pre-treatment, enzymatic hydrolysis and fermentation through which its feedstock undergoes transformation.

Pre Treatment Phase: The biomass is sent to the reactor where it is broken down to cellulose and hemi-cellulose fibres.

Enzymatic Hydrolysis: In the presence of enzymes which act as catalyst, the components are again broken down to easily fermented C5 and C6 sugars.

Fermentation: With the help of genetically modified microorganisms (Yeast), the sugars are fermented into ethanol.

Distillation-The fermented beer is finally distilled to produce near pure ethanol at the top of the column, and vinasse at the distillation bottoms.

Granbio’s Bioflex1 Plant

Granbio opened the southern hemisphere’s first cellulosic ethanol plant Bioflex 1 in Alagoas in 2014. The plant produces cellulosic ethanol from sugarcane bagasse and straw residues to produce 82 million liters (22 million gallons) of ethanol per year. The plant is located next to a first generation (1G) sugar mill and utilizes its sugarcane straw as a feedstock for production. For Bioflex 1, GranBio developed a system to harvest, store and process 400,000 metric tons of straw per year.

As per the company, the plant has the capacity to increase Brazilian ethanol production capacity per acre by 50% through the use of agricultural waste without meddling with the cane fields. For Proesa Technology, the company has partnership with Beta Renewables. The Dutch company DSM, and the Danish company Novozymes provide the plant with industrial yeast and enzymes consecutively. The lignin byproduct is combusted on-site along with additional bagasse from the neighboring sugar refinery to provide all of the steam and electricity needs of both the BioFlex cellulosic ethanol plant and the 1G ethanol/sugar refinery. Excess power is exported to the local electricity grid. Vinasse and boiler ash are applied to the sugarcane fields, reducing fertilizer consumption. The American agency Air Research Board has approved carbon footprint of ethanol produced by Granbio and labeled it as the most environment friendly fuel ever produced.




Leave a Reply

Your email address will not be published. Required fields are marked *

Biofuel up to date © 2019 Frontier Theme
Web Design MymensinghPremium WordPress ThemesWeb Development

Karnataka to get $50 million dollars for biofuel

In India the Karnataka States’ Biofuel Development Programme  is set to get a boost in the form of  $50 million dollars from International Fund for Agriculture Development (IFAD). The loan can be utilized in various activities such as plantation of biofuel crops and production. Biofuel Development Board of Karnataka has been active in promoting biofuels and  has established biofuel information and demonstration centres with about 100 l per day capacity in each district. These centres are being scaled up to 150-200 l capacity. The Board also owns a 500 litre biodiesel production plant at Hatti Gold Mines. The loan conditions include 1% interest with a 50-year repayment period.

China’s first commercial flight powered with biofuel was successfully completed

China's first commercial flight powered with biofuel was successfully completed between Shanghai and Beijing. The privately owned Hainan Airlines flight used biofuel made up from used cooking oil collected from the restaurants. The biofuel was supplied by China National Aviation fuel company and energy giant Sinopec. It was a Boeing 737 plane which used 50% biofuel blended in conventional jet fuel and carried more than 100 passengers to their destination.

India achieved only 1.4% ethanol blending this fiscal year

Problems between sugar mill owners and oil marketing companies have resulted in only 1.4% ethanol blending through february this fiscal year which is way less than the blending target of 5% and lesser than the last year's achieved blending level of 2%.The National Policy on Biofuels of India identifies the sugar cane molasses as the feedstock suitable under Indian conditions for ethanol production for blending purpose and that makes the sugarcane mills as the biggest suppliers of bioethanol. The high state-level levies on the biofuel and the requirement of obtaining permits from authorities have been sited as the major impediments for producing bioethanol by Sugar Mills. The government has set the selling price of ethanol for sugar mills @  Rs. 48.50/litre  if the depo of the oil marketing company is within 100 km from distillery and  @49.50/ litre  if the depo is beyond 300 km. The producers claim that the long distance transportation also reduces their margin. India needs approximately 115 crore litres of ethanol to meet the 5% target. Read more at