Results 11 to 20 of about 46,291 (210)

4种黄曲霉毒素吸附剂对花生油综合品质的影响Effects of four aflatoxin adsorbents on the comprehensive quality of peanut oil

open access: yesZhongguo youzhi, 2023
黄曲霉毒素污染是影响花生油食用安全性的重要因素之一,为了优化黄曲霉毒素的吸附工艺,分别从吸附剂添加量、吸附时间、吸附温度及黄曲霉毒素B1(AFB1)污染水平等方面研究4种吸附剂(活性白土、膨润土、改性蒙脱土A、改性蒙脱土B)对花生原油中AFB1的吸附效果以及对花生油综合品质的影响。结果表明:添加量为0.1%~1.0%时,4种吸附剂对AFB1的吸附率随添加量增加而提高,达到一定水平后,吸附率维持动态平衡;吸附时间为20~60 min、吸附温度为45~115 ℃时 ...
姜德铭1,刘晓萌1,邹球龙1,印铁1,张晓琳1,张刚2,刘配莲2 JIANG Deming1, LIU Xiaomeng1, ZOU Qiulong1, YIN Tie1, ZHANG Xiaolin1, ZHANG Gang2, LIU Peilian2
doaj   +1 more source

The study of effect of activated carbon adsorbing volatile organic compounds under different conditions(不同条件对活性炭吸附挥发性有机物的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2013
以二氯甲烷和乙醇为模型,研究了活性炭对不同水溶性VOC气体的吸附效果以及改性炭对含水气体的吸附情况.结果表明,活性炭在吸附二氯甲烷时,当气体中水分含量过多时,吸附会受到干扰,并且会产生脱附现象,吸水饱和炭几乎没有吸附作用.而在处理乙醇时,乙醇中的水分对吸附量影响较小.使用改性炭处理二氯甲烷时,其吸附量虽有下降,约为原来的60%,但改性炭能减轻水分对二氯甲烷吸附的干扰和脱附.
ZHOUJian-feng(周剑峰)   +1 more
doaj   +1 more source

腐殖酸对蒙脱石吸附镉离子的影响机理研究

open access: yesShuitu Baochi Xuebao, 2007
实验研究了腐殖酸存在下重金属元素镉(Cd2 )在蒙脱石表面的吸附过程,对比研究了两种不同腐殖酸对吸附机理的影响。结果表明,重金属离子在蒙脱石表面的吸附作用受介质pH的影响。加入腐殖酸后吸附产生滞后现象,蒙脱石先吸附腐殖酸,之后转变为腐殖酸和蒙脱石共同吸附Cd2 作用,吸附量较单独吸附过程更大。吸附机理与腐殖酸的投加量和投加方式有关。
郝红英, 何孟常, 林春野
doaj   +2 more sources

The study of antimony(V) adsorption by commercial iron oxide red(氧化铁红对印染废水中锑(V)的吸附性能)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2022
印染行业锑(Sb)污染严重,常规除锑工艺难以达标,铁氧化物对水中锑及其化合物具有良好的吸附效果,选取氧化铁红110、138与190,分别记为T110、T138、T190,对模拟印染废水中的Sb(V)进行吸附去除。结果表明,当Sb(V)初始浓度为200 μg·L-1,投加量为0.2 g·L-1时,T138的除锑效果最佳,去除率可达99.44%。XRD图谱显示,氧化铁红的主要成分为α-Fe2O3。TEM与XPS图谱表明,T138的颗粒形状较不规则且相对粗糙,含还原态铁与丰富的羟基位点,有利于吸附Sb(V ...
ZHOUChuchen(周楚晨)   +5 more
doaj   +1 more source

A Comprehensive Review of Adsorbents for Rare Earth Separation: Design, Synthesis, Adsorption Performance, and Mechanisms

open access: yesRare Metals, EarlyView.
ABSTRACT Rare earth elements (REEs) play an irreplaceable role in modern technology and industry. However, due to the highly similar physicochemical properties among REEs, their separation remains a significant challenge. Additionally, REEs often exist in low‐concentration solutions, making efficient REE recovery an urgent task.
Miao‐Miao Huang   +6 more
wiley   +1 more source

Study on the Separation of 1,3-Propanediol from 1,3-Propanediol Broth Fermented by Clostridium butyricum [PDF]

open access: yes, 2013
1,3-丙二醇是一种重要的化工原料,发酵法生产1,3-丙二醇是一环境友好的生产方法,但由于发酵液成分复杂,导致下游分离成本较高。本论文的目的是利用阳离子树脂从丁酸梭菌的1,3-丙二醇发酵液中吸附分离1,3-丙二醇,主要研究了1,3-丙二醇的吸附机理和“絮凝-活性炭除色-阳离子树脂动态吸附/洗脱-减压蒸馏”的1,3-丙二醇分离提取新工艺,主要结果如下: (1)研究了12种树脂对1,3-丙二醇的静态吸附能力,发现001×7氢型树脂对1,3-丙二醇的吸附效果最好。研究了1,3-丙二醇在001 ...
代洪飞
core  

Bidentate Coordination by Graphene Oxide‐Enhanced γ‐Cyclodextrin for Synergistic Solvation and Stabilization of the Zn Anode

open access: yesRare Metals, EarlyView.
ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu   +8 more
wiley   +1 more source

Adsorption of CO2 by ionic liquids grafted on mesoporous MCM-41 [PDF]

open access: yes, 2016
为了提高离子液体(ILs)对二氧化碳的吸收能力,也为改善多孔材料对二氧化碳的选择性,将离子液体嫁接到多孔材料形成优良吸附剂是针对二氧化硅捕获的一个热点研究方向。本工作研究两种新的吸附材料,也就是把苄乙基三甲基氯化铵([VBTMA][Cl])和四庚基溴化铵([thepAm][Br])两种离子液体MCM-41材料,并研究所制备的吸附材料对CO2、H2、CO的吸附量以及对CO2的吸附选择性。 通过对MCM-41三种方法的预处理,以及表面嫁接MPMTS,FT-IR、TGA、BET、TEM和元素分析等表征结果表明,
NKINAHAMIRA FRANCOIS
core  

A High Capacity‐Long Cycling Concurrent Strategy of Ti3C2/MgH2 for Lithium Storage

open access: yesRare Metals, EarlyView.
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
wiley   +1 more source

Theoretical analysis of C Is near-edge X-ray absorption fine structure of CO/NiO(100)(CO在NiO(100)面上吸附的近边X射线吸收精细结构理论分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2001
用多重散射团簇(MSC)理论对CO在NiO(100)面吸附的碳Is近边X射线吸收精细结构(NEXAFS)实验谱进行了定量分析,研究了该系统可能出现的吸附模型.MSC方法分析表明CO是以C原子朝下,吸附在衬底的Ni—O键桥上,R-factor(可靠性因子)计算显示C原子的吸附位置距Ni原子0.09nm, CO分子中C原子距衬底的吸附高度为0.31±0.01nm.本文讨论了在NiO表面吸附的CO分子σ键的物理本质.与CO在过渡金属Ni,Cu等表面吸附不同,σ共振对于CO键长的依赖不明显.
ZHUANGFei(庄飞)   +4 more
doaj   +1 more source

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