Related Experiment Video
Updated: Aug 17, 2026

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
Published on: June 28, 2019
Removal of arsenic and humic substances (HSs) by electro-ultrafiltration (EUF)
Yu-Hsiang Weng1, Lin Han Chaung-Hsieh, Hsin-Hua Lee
1Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan, ROC.
Abstract:
A laboratory scale electro-ultrafiltration (EUF) system was developed and used to explore the removal of arsenic and humic substances (HSs) from water. As a negatively charged species, arsenate(V) was readily removed after applying voltage to the EUF cell. Arsenite(III) was removed via EUF after the pH of the water had been adjusted. Meanwhile, the rejection of HSs increased due to the presence of an electric field. This study also showed that the removal of arsenite(III) from water relies primarily on electrostatic and non-electrostatic mechanisms. In the presence of HSs, arsenate(V) complexed with the HSs and was then able to be removed by EUF. This study demonstrates that EUF is a highly promising means of removing arsenic from water.
More Related Videos
12:11A Modified EPA Method 1623 that Uses Tangential Flow Hollow-fiber Ultrafiltration and Heat Dissociation Steps to Detect Waterborne Cryptosporidium and Giardia spp.
Published on: July 9, 2012
12:55Quantification of Humic and Fulvic Acids in Humate Ores, DOC, Humified Materials and Humic Substance-Containing Commercial Products
Published on: March 18, 2022
Related Concept Videos
Precipitation and Co-precipitation
Ion-Exchange Chromatography
Extraction: Advanced Methods
Ion Exchange
Capillary Electrophoresis: Applications
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Downstream Processing