الفهرس 
Chapter one : IntroductionOnly 14 pages are availabe for public view
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Abstract
Elimination of salicylic acid was investigated using pulsed corona discharge by multipin-plate reactor. The corona discharge is an advanced oxidation technique that utilizes the production of highly active species like HO• to destroy Salicylic acid. Salicylic acid concentration of 10 mg/l was totally removed in 60 min of treatment while the concentrations of 20 and 30 mg/l were totally removed in 2 hr when 200 needles of stainless steel were utilized.
In batch system, numerous essential variables like pH, initial concentration, conductivity besides Na2SO4 dosage were studied to realize their influence on salicylic acid elimination. Salicylic acid elimination was enhanced with lowering the pH, the initial concentration, and the conductivity of the solution. Nearly 99% removal of salicylic acid was reached at pH 3, Liquid conductivity of 20 μS cm -1 but this percentage was increased to 100% at 50 mg/l of Na2SO4. The SA elimination enhances above 99% when H2O2 was 30 mg/l within 30 min for 10 mg/l of SA and within 60 min for 20 and 30 mg/L of SA.
In batch recirculating reactor, the elimination rate improves with rising water flow rate and temperature. When SA concentration was 10 mg/l with pH of 3, the air gap was 0. 5 cm, the number of pins was 200, water flow rate was 0.6 l/min at temperature 35 ºC the elimination rate went up to 61.3% in 120 min and this percentage was improved to74.2% by adding 0.1 g/l of photocatalyst TiO2.