Simultaneous removal of low concentrations of ammonium and humic acid from simulated groundwater by vermiculite/palygorskite columns

2013 ◽  
Vol 86 ◽  
pp. 119-124 ◽  
Author(s):  
Guocheng Lv ◽  
Xiaoyu Wang ◽  
Libing Liao ◽  
Zhaohui Li ◽  
Maoqian He
Keyword(s):  
Humic Acid ◽  
Simultaneous Removal ◽  
Low Concentrations ◽  
Simulated Groundwater

Removal of Low Concentrations of Ammonium and Humic Acid from Simulated Groundwater by Vermiculite/Palygorskite Mixture

2012 ◽  
Vol 84 (8) ◽  
pp. 682-688 ◽  
Author(s):  
Xiuli Zhang ◽  
Guocheng Lv ◽  
Libing Liao ◽  
Maoqian He ◽  
Zhaohui Li ◽  
...  
Keyword(s):  
Humic Acid ◽  
Low Concentrations ◽  
Simulated Groundwater

Simultaneous removal of Ag(I), Cd(II), Cr(III), Ni(II), Pb(II), and Zn(II) from wastewater using humic acid-coated aminopropyl silica gel

2015 ◽  
Vol 57 (37) ◽  
pp. 17411-17420 ◽  
Author(s):  
Apichat Imyim ◽  
Churairat Thanacharuphamorn ◽  
Amornrat Saithongdee ◽  
Fuangfa Unob ◽  
Vithaya Ruangpornvisuti
Keyword(s):  
Humic Acid ◽  
Silica Gel ◽  
Simultaneous Removal

Simultaneous Removal of NH4+ and PO43- at Low Concentrations from Aqueous Solution by Modified Converter Slag

2013 ◽  
Vol 85 (6) ◽  
pp. 530-538 ◽  
Author(s):  
Jinming Duan ◽  
Hongda Fang ◽  
Jinmei Lin ◽  
Jianqing Lin ◽  
Zhiyong Huang
Keyword(s):  
Aqueous Solution ◽  
Converter Slag ◽  
Simultaneous Removal ◽  
Low Concentrations

scholarly journals New Insights on the Simultaneous Removal by Adsorption on Organoclays of Humic Acid and Phenol

Water ◽  
2016 ◽  
Vol 8 (1) ◽  
pp. 21 ◽  
Author(s):  
Emese Szabó ◽  
Zsolt Pap ◽  
Gergő Simon ◽  
András Dombi ◽  
Lucian Baia ◽  
...  
Keyword(s):  
Humic Acid ◽  
Simultaneous Removal

Polyurethane foam membranes filled with humic acid-chitosan crosslinked gels for selective and simultaneous removal of dyes

2017 ◽  
Vol 505 ◽  
pp. 67-78 ◽  
Author(s):  
Hu-Cheng Yang ◽  
Ji-Lai Gong ◽  
Guang-Ming Zeng ◽  
Peng Zhang ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Humic Acid ◽  
Polyurethane Foam ◽  
Simultaneous Removal

Influence of ionic composition on NOM size and removal by ultrafiltration

2004 ◽  
Vol 4 (4) ◽  
pp. 197-204 ◽  
Author(s):  
W. Xi ◽  
W. Rong ◽  
A.G. Fane ◽  
W. Fook-Sin
Keyword(s):  
Light Scattering ◽  
Humic Acid ◽  
Removal Efficiency ◽  
Ionic Composition ◽  
Effective Size ◽  
Dominant Factor ◽  
Particle Sizes ◽  
Ion Interactions ◽  
Low Concentrations ◽  
Effective Particle

In this study, the effects of Na+ and Ca2+ on the apparent MWt distribution and removal efficiency of NOM by deadend ultrafiltration were investigated. NOM samples from Singapore (reservoir-based), IHSS (river-based standard) and Biohumic (soil-based) were used. The effective particle sizes and MWt distributions of the NOM, with and without ions, were analyzed by light scattering and HPSEC, respectively. The effective size of the NOM was significantly reduced by increasing the Na+ concentration. This was robably due to coil-to-globule conversion and polyelectrolyte interaction, changing the NOM conformation from linear to spherical. However, increasing the concentration of Ca2+ showed competing effects. At relatively low concentrations of Ca2+, the size of the NOM was reduced, presumably by the mechanism attributed to Na+. As the concentration of Ca2+ was further increased the NOM size increased, due to aggregation or chelation between humic acid in the NOM and Ca2+ becoming the dominant factor. Ion interactions with NOM also had a significant impact on removal by ultrafiltration. With addition of Na+, the Singapore NOM retention decreased from 52% to 29%. In contrast, the retention of Biohumic NOM increased from 45% to around 70% with an increase in Ca2+ concentration.

Sign in / Sign up

Export Citation Format

Share Document