Preparation of Tannin-immobilized Collagen/Cellulose Bead for Pb(II) Adsorption in Aqueous Solutions
Preparation of Tannin-immobilized Collagen/Cellulose Bead for Pb(II) Adsorption in Aqueous Solutions
复制标题
水溶液中吸附 Pb(II) 的单宁固定化胶原/纤维素珠的制备
DOI：
10.15376/biores.10.1.1773-1789
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发表时间：
2015-01
期刊：
影响因子：
1.5
通讯作者：
Huang, Liulian
中科院分区：
文献类型：
--
作者：
Zhang, Min;Ding, Cuicui;Chen, Lihui;Huang, Liulian
以胶原蛋白/纤维素共混物为原料，利用杨梅单宁与胶原蛋白的氨基反应，制备了杨梅单宁固定化胶原蛋白/纤维素生物吸附剂（BT-胶原蛋白/纤维素）。与未加单宁的胶原/纤维素微球相比，BT-胶原/纤维素微球具有更致密的结构和更高的热稳定性。此外，BT-胶原蛋白/纤维素中纤维素的晶体结构得到保留。研究了BT-胶原/纤维素对水溶液中Pb（II）的吸附性能，并与胶原/纤维素的吸附性能进行了比较。两种生物吸附剂对Pb（II）的吸附均在pH 5.5附近达到最大值。基于胶原蛋白的质量含量，根据Langmuir等温线，BT-胶原蛋白/纤维素在25 °C下的平衡吸附容量为1.352 mmol/g，其高于胶原蛋白/纤维素的平衡吸附容量（0.345 mmol/g）。在动力学研究中，两种生物吸附剂在~240 min内达到平衡，实验数据可以很好地拟合的伪二级速率模型。然而，BT-胶原/纤维素在三个吸附-解吸循环后具有更好的可重复使用性。
Bayberry tannin-immobilized collagen/cellulose bio-adsorbent (BT-collagen/cellulose) was prepared via the reaction of bayberry tannin with the amino group of collagen in collagen/cellulose blends. Compared with collagen/cellulose beads without tannin, BT-collagen/cellulose had a more compact structure and higher thermal stability. Furthermore, the crystalline structure of cellulose in BT-collagen/cellulose was preserved. The adsorption properties of BT-collagen/cellulose to Pb(II) in aqueous solution were investigated and compared with those of collagen/cellulose. The adsorption of Pb(II) on both of the two bio-adsorbents reached the maximum at pH near 5.5. Based on the mass content of collagen, the equilibrium adsorption capacity of BT-collagen/cellulose at 25 °C was 1.352 mmol/g, according to Langmuir isotherms, which was higher than that of collagen/cellulose (0.345 mmol/g). In kinetics studies, both of the two bio-adsorbents reached equilibrium within ~240 min, and the experimental data could be well fitted by the pseudo-second-order rate model. Nevertheless, BT-collagen/cellulose had a better reusability after three cycles of adsorption-desorption.
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影响因子：
6.3
作者：
Park S;Baker JO;Himmel ME;Parilla PA;Johnson DK
通讯作者：
Johnson DK
DOI：
10.1016/s0016-0032(17)90938-x
发表时间：
--
影响因子：
4.1
作者：
I. Langmuir
通讯作者：
I. Langmuir
影响因子：
8.8
作者：
Chiou, MS;Li, HY
通讯作者：
Li, HY
影响因子：
15.1
作者：
Oezacar, Mahmut;Sengil, I. Ayhan;Tuerkmenler, Harun
通讯作者：
Tuerkmenler, Harun
影响因子：
15.1
作者：
M. Mohapatra;S. Khatun;S. Anand
通讯作者：
M. Mohapatra;S. Khatun;S. Anand