Results 11 to 20 of about 153,597 (169)
蒙脱土对植物油脱色效果的综合评价Comprehensive evaluation of the bleaching effect of montmorillonite on vegetable oil
为了开发高效、环保的食用油脱色剂,以一种环保方法(半干法)生产的蒙脱土为研究对象,研究其在不同脱色条件(脱色温度、脱色时间和脱色剂添加量)下对大豆油、葵花籽油和菜籽油品质的影响。结果表明:该蒙脱土具有吸附色素和过氧化物从而降低油脂红值和过氧化值的作用,与脱色前相比,大豆油、葵花籽油和菜籽油的红值最大降幅分别为77.4%、92.3%和87.2%,过氧化值最大降幅分别为82.7%、83.2%和91.2%;蒙脱土用于3种植物油的脱色,植物油中总甾醇和总生育酚含量下降,而酸值总体上缓慢上升。进一步研究发现 ...
黄俊圻1,张海龙1,2,吕晓雅1,谌刚3,胡勇杰3, 李冰4,龚任4,齐玉堂1,2,张维农1,2 HUANG Junqi1, ZHANG Hailong1,2, LYU Xiaoya1, CHEN Gang3, HU Yongjie3, LI Bing4 , GONG Ren4, QI Yutang1,2, ZHANG Weinong1,2
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旨在为大豆油精炼中脱色剂的应用提供参考,以大豆碱炼油和3种常用脱色剂活性白土、凹凸棒土、中性膨润土为原料,考察了3种脱色剂对大豆油的脱色、脱皂和脱磷脂能力。结果表明:活性白土、凹凸棒土、中性膨润土添加量超过2%后,脱色率上升速率变慢;脱色剂添加量为3%时,活性白土、凹凸棒土、中性膨润土脱色率分别为92.1%、86.9%、90.7%;大豆碱炼油在426、450、479、665 nm波长处有吸收峰,可通过油样在上述4个波长处吸光度的变化来考察脱色剂的脱色能力;脱色剂添加量为1%时,活性白土、凹凸棒土 ...
王宏平,孙日飞,何立军,马莉,蒋甜燕,邵彦智WANG Hongping, SUN Rifei, HE Lijun, MA Li, JIANG Tianyan, SHAO Yanzhi
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以阳离子红X-GRL染料为模型污染物,研究了反应时间、气相氧气流量和水中是否存在溶解氧(DO)等条件对阳离子红X-GRL光降解脱色效果的影响.在缺氧条件下,阳离子红X-GRL染料的光降解脱色效果较差,脱色率仅为9.1%,染料的光降解脱色以光直接降解脱色为主,·OH脱色次之.在有氧条件下,阳离子红X-GRL染料的光降解脱色效果得到显著提高,脱色率由缺氧时的9.1%分别提高到氧气流量为40 L·h-1的27.6%和100L·h-1的38.8%.脱色率的提高主要归因于DO和气相氧气在184.9 ...
ZHAOWei-rong(赵伟荣) +2 more
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ABSTRACT The development of structurally stable anodes with high capacities and long cycle lives is essential for the development of potassium–ion batteries. Conversion‐type anodes have attracted considerable attention in potassium–ion batteries (PIBs) due to their high theoretical capacities.
Jeong Ho Na +7 more
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ABSTRACT LiBH4 has drawn significant attention due to its high theoretical hydrogen storage capacity of 18.5 wt%, yet its practical application is hindered by the harsh dehydrogenation conditions. This paper proposes a strategy integrating ensemble learning with density functional theory (EL–DFT) for rapidly screening modified LiBH4 systems that ...
Zishan Luo +11 more
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Abstract Currently, scholarship on education to foster connectedness with nature primarily focuses on children. As adults likewise face the disconnection from nature and play a key role in influencing children, it is important to understand how they perceive, engage in, and benefit from relevant programmes.
Xiaoxue Chen, Zuyi Lyu, Junxi Qian
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A High Capacity‐Long Cycling Concurrent Strategy of Ti3C2/MgH2 for Lithium Storage
ABSTRACT The excellent electrical conductivity and superior cycling stability render Ti3C2 MXene a promising Li ion battery anode. Nevertheless, the practical implementation of Ti3C2 MXene in commercial applications faces significant challenges, predominantly due to the low specific capacity.
Tingting Xu +9 more
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ABSTRACT Articular cartilage regeneration remains a significant challenge because of its limited intrinsic healing capacity and the inadequacy of conventional treatments for restoring structural and functional integrity. In this study, a novel injectable composite hydrogel scaffold was designed to mimic the extracellular matrix (ECM) of native ...
Zhong‐Lian Wu +13 more
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使用还原型脱色剂对直接染料染色废水进行脱色处理,重点研究了脱色剂用量、反应温度、pH和时间等因素对脱色反应的影响。并且将脱色后的染色废水回用于织物染色中,在染色织物的颜色特征和牢度方面进行了比较。结果表明,脱色温度的升高有利于染料的脱色,尤其对于水溶性较差的品种,脱色剂用量的增加能够促进染料的脱色率的升高。另外三种染料在自来水和回用水中的的染色织物的染色表面深度和牢度比较接近,而且染色织物之间的色差较小,这说明脱色废水可以回用于直接染料的染色中。
董永春, 王恩普
doaj
ABSTRACT Developing efficient catalytic thermal desorption systems is of great significance in the field of sustainable soil remediation. Herein, novel Mn–Ce solid solution modified Co3O4 nanocrystals were successfully prepared for the removal of perfluorooctanoic acid (PFOA) in soil.
Yu‐Hao Liu +8 more
wiley +1 more source

