英语翻译Further evidence of the important role of electrostaticinteractions in the adsorption process came from experimentsconducted at a fixed initial pH and increasing ionic strength(Fig.7).The amount of lysine adsorbed decreased stronglyas mor

英语翻译Further evidence of the important role of electrostaticinteractions in the adsorption process came from experimentsconducted at a fixed initial pH and increasing ionic strength(Fig.7).The amount of lysine adsorbed decreased stronglyas mor
英语翻译
Further evidence of the important role of electrostatic
interactions in the adsorption process came from experiments
conducted at a fixed initial pH and increasing ionic strength
(Fig.7).The amount of lysine adsorbed decreased strongly
as more sodium chloride was added to the initial lysine solution.
This confirms that electrostatics is an important factor
in adsorption under these conditions,as added electrolyte
results in increases in electrostatic shielding and competition
for binding sites on the silica surface.In fact,the amount
of lysine adsorbed at the highest added salt concentration
(0.1 M) was only 4 mol% of that adsorbed with no added
salt.
The adsorption capacity of the MCM-41 for lysine under
the conditions tested here is lower than that on some other
adsorbent materials,such as zeolite Beta (0.4 mmol/g) [27].
This is likely to be due to the relatively low acidity of the
siliceous MCM-41 surface [28].However,the capacity could
be increased by rehydrating the adsorbent after calcination to
increase the silanol group density [29] or by modifying the
surface to incorporate functional groups,such as sulfonic acid
groups,targeted for adsorption of the amino acid.The latter
approach has the added benefit that surface modifications can
be tailored to also enhance the stability of the mesoporous
molecular sieve in aqueous solutions [19].

英语翻译Further evidence of the important role of electrostaticinteractions in the adsorption process came from experimentsconducted at a fixed initial pH and increasing ionic strength(Fig.7).The amount of lysine adsorbed decreased stronglyas mor
进一步的证据的重要作用静电
互动中的吸附过程来自实验
进行了一个固定的初始pH值和离子强度增加
（图7 ） .数额减少赖氨酸吸附强烈
随着越来越多的氯化钠添加到最初的赖氨酸的解决办法.
这证实,静电是一个重要的因素
在吸附在这种情况下,作为补充电解质
结果在增加,静电屏蔽和竞争
制定具有约束力的网站上硅表面.事实上,这一数额
赖氨酸吸附在最高盐浓度增加
（ 0.1米）的摩尔只有4 ％的吸附没有增加
盐.
的吸附能力,MCM - 41的赖氨酸下
测试的条件是低于其他一些
吸附材料,如β沸石（ 0.4毫摩尔/克） [ 27 ] .
这可能是由于相对较低的酸度
硅MCM - 41表面[ 28 ] .然而,能力可以
增加补水后的吸附剂,以焙烧
增加密度silanol组[ 29 ]或修改
表面把功能组别,如磺酸
群体,有针对性的吸附氨基酸.后者
做法的另一个好处是可以修改面
针对增强的稳定性介
分子筛在水溶液中[ 19 ] .
(仅供参考)