【摘 要】
：
In this work,a novel subcritical n-butane extraction(SNBE)of castor oil from cold pressed cake was investigated.On the basis of single-factor experiments,it
【机 构】
：
College of Chemistry & Chemical Engineering,Central South University,Changsha 410083,People's Repub
【出 处】
：
The 4th International Conference on Biomass Energy Technolog
论文部分内容阅读
In this work,a novel subcritical n-butane extraction(SNBE)of castor oil from cold pressed cake was investigated.On the basis of single-factor experiments,it was observed that the decrease of moisture content(0.59-10.41%)and particle size(>355μm)had a positive effect on extraction efficiency,on the contrary,the decrease of initial oil content(20.79-48.51%)had a negative effect,and optimum extraction conditions for extraction temperature,extraction time(one operation),and number of operations were found to be 60 ℃,50 min,and five times,respectively.Under these conditions,the actual yield was 99.12±0.33%.
其他文献
氮(N)在水稻产量和品质形成过程中起着关键作用,增施氮肥是水稻获得高产的必要措施之一。氮肥的利用率越高越有利于农业的可持续发展。了解氮素吸收转运及再分配的机理对于提高氮肥的利用率和指导农业上氮肥的施用具有重要意义。已有一些研究表明,氮素营养与细胞分裂素水平和叶片衰老之间有着非常紧密的联系,但是缺氮处理下细胞分裂素对水稻幼苗氮素吸收转运及再分配和叶片衰老的调控机制仍不清楚。本论文以籼稻9311为实验
Biodiesel production from waste cooking oil(WCO)catalyzed by Candida rugosa lipase in reversed micelles of bis(2-ethylhexyl)sodium sulfosuccinate(AOT)in iso
碳酸酐酶(EC 4.2.1.1)是一种广泛存在的金属酶,催化CO2的水合反应,是已知的催化速率最高的酶之一。研究发现碳酸酐酶可使灰岩溶解速率增加数倍。为了评价碳酸酐酶在生物岩溶中的作用,本文就岩溶地区典型植物碳酸酐酶的稳定性、主要环境因子对绿藻(Chlamydomonas reinhardtii)胞外碳酸酐酶表达的影响、绿藻胞外碳酸酐酶对石灰岩溶蚀的驱动作用以及高等植物碳酸酐酶、绿藻胞外碳酸酐酶对
Assuming xylan hydrolysis to xylose in sugarcane bagasse(SB)by liquid hot water(LHW)and xylose further degradation to furfural were two consecutive first-or
As one of non-edible oil sources for biodiesel production,oils from microalgae have gained great attention in recent years.To promote microbial oils as the
有机染料废水由于具有结构复杂、色度深,性质稳定,难生化降解等特性而备受关注。作为吸附剂的多孔炭微球由于具有比表面积大,表面官能团丰富和很好的吸附性能而引起了人们的兴趣。本文以廉价易得、来源广泛的酵母为原料,制备了两种复合材料,为染料废水的处理提供了新型的、环境友好的碳材料。(1)以酵母为原料,通过水热法制备出的酵母空心球由于具有突出的物理和化学特性(密度低、比表面积大、表面官能团丰富)而引起了人们
市、县广播电视播出机构职能转变的决策要求:市地州县的主要任务是切实保证中央台和省台节目的转播,市地州电视台自办节目频道压缩调整,县由自办频道转变为在公共频道中的插
In recent years,free lipase has been regarded as a promising biocatalyst for biodiesel production due to its cost efficiency and faster reaction rate.Free l
分子印迹技术(molecular imprinting technique，MIT)是一种制备合成对某一特定印迹分子(模板分子)具有选择性识别作用的聚合物的过程，所制得的聚合物为分子印迹聚合物(molecula
Lignocellulosic biomass represents a renewable resource for the production of biofuels.However,the complexity of lignin-hemicellulose structures,the crystal