Coagulation of humic acid by PACl with high content of Al13: The role of aluminum speciation
Coagulation of humic acid by PACl with high content of Al13: The role of aluminum speciation
复制标题
高含量 Al13 的PACl对腐植酸的絮凝:铝形态的作用
DOI:
10.1016/j.seppur.2009.09.020
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发表时间:
2009-12
影响因子:
8.6
通讯作者:
Huijuan Liu, Chengzhi Hu, He Zhao, Jiuhui Qu
中科院分区:
文献类型:
--
作者:
Huijuan Liu, Chengzhi Hu, He Zhao, Jiuhui Qu
The role of aluminum speciation in coagulation–flocculation of humic acid (HA) by polyaluminum chloride (PACl) with high content of Al13was investigated using27Al NMR spectroscopy, solid-state27Al NMR spectroscopy, electrospray ionization mass spectrometry (ESI-MS) and Al-Ferron method. Experimental results show that, in the coagulation process, the Al13polymers are the dominant species in acidic pH and some of them change to Al precipitates at higher pH. The mechanism of HA removal is directly related to the form of aluminum in solution. The maximum removal of the HA is found to occur in the pH range from 5.0 to 6.0, which means that charge neutralization by Al13polymer is the main mechanism of coagulation at slightly acidic pH. The results of zeta potential and solid-state27Al NMR spectroscopy of the flocs also confirm that positive polymers are very effective in charge neutralizing with HA molecules. Adsorption and sweep coagulation of HA by amorphous Al(OH)3(s) play an important role at pH>6.0 or over dosing.
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影响因子:
12.8
作者:
V. Kazpard;Bruno Lartiges;Céline Frochot;J. B. D. D. L. Caillerie-J.-B.-D.-D.-L.-Caillerie-2275097272;M. Viriot;Jean-Michel Portal;Tatiana Görner;J. Bersillon
通讯作者:
V. Kazpard;Bruno Lartiges;Céline Frochot;J. B. D. D. L. Caillerie-J.-B.-D.-D.-L.-Caillerie-2275097272;M. Viriot;Jean-Michel Portal;Tatiana Görner;J. Bersillon
DOI:
10.1002/j.1551-8833.1989.tb03258.x
发表时间:
1989-08
期刊:
--
影响因子:
--
作者:
S. Krasner;M. McGuire;J. Jacangelo;Nancy L. Patania;K. M. Reagan;E. M. Aieta
通讯作者:
S. Krasner;M. McGuire;J. Jacangelo;Nancy L. Patania;K. M. Reagan;E. M. Aieta
影响因子:
11.4
作者:
PARKER, DR;BERTSCH, PM
通讯作者:
BERTSCH, PM
影响因子:
12.8
作者:
Guan-zhong Lu;J. Qu;Hong-xiao Tang
通讯作者:
Guan-zhong Lu;J. Qu;Hong-xiao Tang
影响因子:
2.7
作者:
J. K. Edzwald
通讯作者:
J. K. Edzwald