Archive for 五月, 2012

方真研究员担任 《生物燃料技术》副主编和《生物燃料,生物制品和生物精炼》编委

星期一, 五月 28th, 2012

近期,我园生物能源组(组长方真研究员接受邀请,担任<<Biotechnology for Biofuels>>副主编。作为副主编的职责是: (更多…)

Prof. ZhenFANG becomes an Associate Editor for Biotechnology for Biofuels, and Editorial Advisory Board Member for Biofpr (Biofuels, Bioproducts and Biorefining)

星期一, 五月 28th, 2012

  Prof. FANG Zhen of Xishuangbanna Tropical Botanical Garden (XTBG) has been recently appointed as an Associate Editor for peer-reviewed scientific journal Biotechnology for Biofuels (impact factor 4.15), after the role of being an Editorial Board Member of it for a few months. (更多…)

Hydrolysis of cellulose to glucose with nanocatalyst at low temperature (150℃)

星期一, 五月 28th, 2012

  Biomass resource is very rich. The annual global biomass production is equivalent to 10 times of world energy consumption. Almost all biomass is in the form of lignocellulose that contains about 50% cellulose (e.g., wood, grass and crop-straws). Therefore, how to effectively and economically convert cellulose to sugars is the key for biorefining of biomass to biofuels and chemicals. (更多…)

Organic Electrolyte Solution: New Pretreatment Method for Enzymatic Saccharification of Microcrystalline Cellulose

星期一, 五月 28th, 2012

  During the bioethanol production, pretreatment, serving as the process to de-crystallization of natural cellulose, is required to benefit the subsequent enzymatic saccharification and to increase the porosity of its surface. (更多…)

Producing biodiesel from Jatropha oil by solid acid catalyst

星期一, 五月 28th, 2012

  Recently, biodiesel has gained significant attention as it is a renewable, biodegradable, less pollutant emitting, non-toxic and more environmentally friendly fuel source as compared with the fossil diesel fuel available at present. Biodiesel can be used as a substitute for petrochemical diesel by blending with petrochemical diesel. In the past 10 years, global biodiesel market emerged stabile growth of biodiesel production. The raw materials for biodiesel production account for almost 60~80% of the total biodiesel cost. Therefore, a number of research projects have been carried out using non-edible oils such as Jatropha oil or fats, and other waste oils, to reduce the raw material cost. (更多…)

Using Jatropha hulls to produce 2,3-butanediol

星期一, 五月 28th, 2012

  Development of bio-refineries has recently attracted increasing attention as a means to provide sustainable alternative solutions to deplete environmental pollution and energy crisis. As more and more Jatropha seeds are used to extract crude oil for biodiesel, a large amount of hulls is generated. How to make full use of these hulls is important for Jatropha biodiesel industry. As Jatrophahulls are rich in carbohydrate (cellulose: 43%; hemicellulose: 15%), further studies are necessary to utilize these polysaccharides to produce sugars for value-added products, such as ethanol, acetic acid, 2,3-butanediol. 2,3-Butanediol is one of the important bio-based chemicals and liquid fuels that exhibits a wide range of potential utilizations in the manufacture of printing inks, perfumes, fumigants, moistening, plasticizers, foods and pharmaceuticals. (更多…)

Bio-Pretreatment of Lignocellulosic Biomass for Enzymatic Saccharification

星期一, 五月 28th, 2012

  In the saccharification of lignocellulosic materials, enzymatic hydrolysis is regarded as a green approach operating under mild reaction conditions with subsequent higher glucose yields. However, the hydrolysis rate can be declined by the presence of lignin, which acts as a physical barrier shielding cellulose from enzymatic attack. Lignin can also cause losses of enzymes (cellulases and β-glucosidases) through their binding to lignin, and deactivation of enzyme activities can occur from products arising from lignin degradation. In order to access the cellulose and reduce lignin before hydrolysis, some pretreatment methods can be developed by using white-rot fungi. (更多…)


星期一, 五月 28th, 2012

  近日,我园杨成源副研究员和方真研究员撰写的综述论文Review and Prospects of Jatropha Biodiesel Industry in China被国际能源类著名刊物Renewable & Sustainable Energy Reviews接收发表。这是我园第一次特邀在该刊物上发表生物能源的研究综述论文。 (更多…)


星期一, 五月 28th, 2012

  纤维素是一类由Beta-1,4糖苷键和氢键链接而成的葡萄糖聚合物,其水解后生成的葡萄糖,是燃料乙醇、生物质冶炼工业的最重要的原料。在天然的木质纤维素生物质中,纤维素被高度聚合的木质素成分包裹。这种结构阻碍了纤维素与水解催化剂的接触,严重地降低了反应效率。在水解反应前,预处理是有效地破坏木质素结构且膨化纤维素成分的必要步骤。但是,当前最有效的化学(酸、碱蒸煮)和物理化学(蒸汽爆破,氨纤维爆破)等预处理工艺的代价(反映在设备投资、生产运行、污染物排放治理等方面)非常高昂(预处理过程的花费最高,约占整个燃料乙醇生产成本的30-40%)。近年来,廉价、高效、绿色的预处理技术受到全球学术界和工业界的瞩目。 (更多…)

Using solid acid catalysts to hydrolyze biomass for producing biofuels

星期一, 五月 21st, 2012

  Owing to the depletion of fossil resources and the increasing demand on fuels, it is important to develop renewable resources to produce fuels and chemicals for energy security. Over the past century, much effort has been made to develop processes for the efficient conversion of carbohydrates to sugars and biofuels. However, the current world bio-ethanol production only accounts for 6.25% of the total potential bio-ethanol production. (更多…)