Very low biodegradability was observed, with BOD/COD values lower than 0.1; pH and conductivity were quite constant during the whole experimentation, with values of 8.3 0.1 and 2.1 0.2 mS cm1, respectively.
Very low biodegradability wasobserved, with BOD/COD values lower than 0.1; pH and conductivitywere quite constant during the whole experimentation, withvalues of 8.3 0.1 and 2.1 0.2 mS cm1, respectively.