2. Experimental
2.1. Electrochemical treatment
Water samples were collected from a Finnish river and stored in
a cold room. The untreated samples had high NOM concentration
according to photometric and DOC measurements. The physicochemical
properties of the samples before and after EC treatment
are presented in Table 1. Water pH was adjusted before treatment
to the desired level using 0.1 M, 0.01 M and 0.001 M sulfuric acid
solutions (analytical grade). Studies were made in acidic initial