Proposed is a process for purification of yellow humic acid by heterophase cation-exchangemembrane. After electrophoresis, its purity was up to 95% and recovery, 88.47%.
And cationexchangemembrane only allow cationic through, does not allow anionic through.
而阳离子交换膜只允许阳离子透过，不允许阴离子透过。
3
The membrane potential of shaly sand was influenced by the cationexchange capacity, hydrocarbon saturation and concentration difference of the contacted solutions.