بررسي تاثير استفاده از الكل هاي سنگين بر كاهش تبخير از سطح مخازن آب

Determining of effect of using heavy alcohols on reduction of evaporation in water storage surface

Evaporation from water storages cause the loss of water, and increased salt concentration, decrease water quality also. Heavy alcohols application might cause rate of evaporation reduction and decrease salt concentration water. In this study, Class A pans were treated with octadecanol and hegzadecanol alcohols (C18H33OH and C16H37OH respectively) equivalent to 20 and 40 gr per hectare during tow days. These alcohols were dissolved in ethanol prior to application. The water level was measured in 2 stages within 38 days. Then the daily evaporation was measured and the statistical results were obtained using MINITAB software. The results show that the separately use of any two type alcohols, be effective on evaporation reduction. The mixing of two type alcohols together is more effective then using each alcohol separately. The octadecanol is also much more effective than hegzadecanol.