Evaluation of cumin stem powder efficiency in Methylene blue removal from aqueous solutions

Subject Areas : Water and Environment

Somaye Rahdar ¹ , Morteza Ahmadabadi ² , Edrise Bazrafshan ³ , Mahmoud Taghavi ⁴

1 - Master of Environmental Health, faculty of Medical Sciences, Zabol University, Zabol, Iran
2 - Member of Faculty, School of Medical Sciences, Torbat-e-Jam University, Torbat- e- Jam, Iran.
3 - Associate Professor, Health Promotion Research Center, Faculty of Medical Sciences, Zahedan University, Zahedan, Iran
4 - Ph.D Student of Environmental Health Engineering, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

Received: 2015-05-25 Accepted : 2015-08-03 Published : 2015-09-23

Keywords: Dye Removal, Adsorption, Methylene blue, Natural Adsorbent, Cumin stem powder,

Abstract :

Methylene blue (MB) is a most common paint for dying and it can cause eye burns, breathingproblem, heart rate increasing, nausea, diarrhea, and vomiting, gastritis, shock, cyanosis, jaundice,quadriplegia, and tissue necrosis in humans. In this study, cumin stem powder has been used as a lowcost adsorbent for the removal of Methylene blue dye from aqueous solutions.In this experimental study, the efficiency of cumin stem powder in removal of methylene blue and theeffect of effecting operating parameters such as pH (2-12), reaction time (5-210 min), adsorbentdosage (0.1-2 g/l) and initial concentration of dye (10-100 mg/l) on color removal from syntheticwastewater were studied.The results showed that the maximum removal efficiency of methylene blue 93% was achieved atoptimum condition: pH 11, reaction time 90 min, adsorbent dosage 0.5 g/l and initial dyeconcentration 100 mg/l. The results of isotherm study revealed well fitting of the experimental datawith Freundlich (R2=0.9913).According to results of this study, it was found that the cumin stem powder has a high capacity toremove methylene blue dye from aqueous solution and textile industry wastewater.

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