C. Analytical Procedures
COD and MLSS were measured according to standard
methods [8]. After filtering the water sample using GF/C
filter glass paper, the soluble COD was measured by
potassium dichromate digestion method. Solid retaining on
the glass paper was used for measuring MLSS. Phenol was
measured by colorimetric method followed APHA et al.
(1998) [8]. The samples were measured using UV-VIS
spectrophotometer at wavelengths of 500 nm.
III. RESULTS AND DISCUSSION
A. Potential of Phenol Removal by AS
The experiment was conducted at the initial phenol
concentrations of 0 (control), 10 and 100 mg/L as results
shown in Fig. 1. No phenol was detected in the control test.
From the tests at the phenol concentrations of 10 and 100
mg/L, phenol continuously decreased for entire of the
experiment. At the end of the experiment, phenol was
removed for 100.00 and 7.30% from the tests at the phenol
concentrations of 10 and 100 mg/L, respectively.