02 February 2017 3 9K Report

Dear all

I am conducting the experiment by using chitosan (gel= chitosan+acetic acid, 2%) to coat on surface biochar, but I do not know the way to remove the unreacted gel from the mixture of chitosan and biochar. I was using 'Bottle top vacuum filter system - 0.22um' and also put centrifuge machine, but not success. If possible, please give me any suggestion for that.

Kind regards

Hien

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