| dc.description.abstract | The presence of Natural Organic Matter in a water source can affect the
performance of drinking water processes as well as the quality of the water
produced. It is caused by the properties of NOMs that act as pollutant carriers or
precursors in embedding disinfectant by-products. (DBP). Therefore, the reduction
of NOM concentration in drinking water supply through simple adsorption process
is necessary. The adsorption process in this study was carried out in batches using
an adsorbent of coconut and coal of 8 mesh size against a synthetic sample water
adsorbates in concentrations of 10 mg/L, 15 mg/l, and 20 mg/ L obtained from the
addition of fulvic acid compounds. To optimize this NOM reduction process, it is
important to measure and characterize NOM through Spectrofluorometric method
with emission-existence matrix (EEM) analysis technique in representing Fulvic
acid-like, Humic acid-like, Tyrosine-like, and Tryptophan-like. The optimum dose
in the reduction of NOM levels for both types of absorbents is at the mass of the
adsorbent 12.5 grams with a sample volume of 250 mL. Whereas the optimum
contact time for coconut and coal bars is 30 minutes and 120 minutes. The
fluorescence intensity of the adsorbent used will show the efficiency value. Based
on the three concentrations used, the fluorescence reduction efficiency was higher
for fulvic acid and humic than tyrosine and tryptophan. This is due to differences
in the nature of the fractions. And coal GAC adsorbent is more efficient than
coconut shell, this is because there is a difference in the pore size of the adsorbent
which determines the amount of NOM absorbed. | en_US |
