عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Introduction:Treatment of colored wastewater by use of effective methods is one of the most important challenges for environmental engineers. Among various ways of removing color from wastewater, adsorption by activated carbon is the common and expensive way. The aim of this study is the assessment of dolomite and zeolite stones efficacy in Acid Blake 1 Removal from aqueous solution . Material and methods :Present paper is an experimental study. Dolomite and zeolite stones were ordered from Semnan Negin Powder Company. These stones were gathered from Aladagh area in Ghuchan city. The Solution’s PH was controlled by HCL and NaOH. Spectrophotometer DR5000 was used for measuring the amount of absorbed color. As the amount of absorbed color by the absorbents (dolomite and zeolite powder) is affected by various factors such as PH, color concentration, absorption weight and detention time, so in this study we decided to evaluate the effect of mentioned factors in removal of desired amount color . Results:The results showed that the amount of absorbed color by absorbent will increase by prolongation of contact time between absorbent and solution, increase in color density and the amount of absorbent substance and also will decrease by increase in solution’s PH .
Conclusion:The results indicated that zeolite stone was a dominant adsorbent for Acid Black1 removal in comparison with dolomite stone