The reporter learned from Anhui Fengyuan Group Co., Ltd. yesterday that a major breakthrough has been made in the key technology for developing straw-based fuel ethanol. This innovation is expected to drive the pilot project of processing non-edible agricultural by-products into fuel ethanol. The new method uses crop residues such as rice straw and corn stalks as raw materials, offering a more cost-effective alternative compared to traditional corn-based production. It cuts costs by over 300 yuan per ton, while also avoiding competition with food crops and addressing waste management issues.
To reduce reliance on imported crude oil, China initiated pilot projects for fuel ethanol in 2002. The government approved four designated manufacturers, including Anhui Fengyuan Group, and launched vehicle fuel programs in provinces like Heilongjiang and Jilin. However, current domestic production still relies heavily on grain as a feedstock, raising concerns about food security and high production costs, which have limited the commercial viability of fuel ethanol.
In response to these challenges, Fengyuan Group, after being designated as a fuel ethanol manufacturer in 2002, began a comprehensive effort to innovate in both raw materials and production technologies. Their focus shifted toward using straw as a sustainable feedstock. Through collaboration with universities and research institutes, they developed advanced separation and fermentation processes. After years of systematic research, the National Engineering Center of Fermin Group successfully overcame two critical technical barriers: the development of cellulose hydrolase and the creation of specialized strains for five-carbon sugar fermentation.
According to test results, one ton of fuel ethanol can be produced from four tons of straw, such as corn stalks or wheat straw. At a cost of around 400 yuan per ton of straw, the total production cost is significantly lower than that of corn-based ethanol, making it highly competitive in the market. Moreover, China’s vast straw resources—estimated at over one billion tons of dry matter annually—could be converted into more than 300 million tons of oil equivalent, providing a significant energy boost.
Currently, many regions burn or discard straw during harvest season, leading to environmental pollution and wasted potential. With this new technology, Fengyuan Group aims to transform these agricultural by-products into valuable fuel. The company plans to launch its industrial-scale pilot plant later this year, marking a key step forward in the sustainable development of biofuel in China.
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