The Performance of Starch as a Natural Coagulant for Turbidity Removal from Wastewater in Stone Cutting Industry
Publish place: Archives of Hygiene Sciences، Vol: 8، Issue: 1
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_AHS-8-1_003
تاریخ نمایه سازی: 3 اسفند 1399
Abstract:
Background & Aims of the Study: In this study three types of starch such as wheat, corn and potato were used as natural coagulants for turbidity removal of wastewater in stone cutting industry using jar test and their performance was compared with that of alum.
Materials & Methods: This study is an analytical-applied. Natural wastewater from stone industry was used. The conventional jar test apparatus was utilized in all the coagulation-flocculation experiments. To evaluate the effect of gelatinized starch, the solution was prepared in both autoclaved and non-autoclaved forms. The effect of pH and coagulant doses were investigated in this study.
Results: It was found that with regard to the effect of control sample from autoclaved starches, potato starch with a pH of 6 had the highest removal rate with 4.78% and among non-autoclaved starches, wheat starch with a pH of 7 had the maximum turbidity removal rate with 9.53%.
Conclusions: The results showed that the non-autoclaved wheat starch has more efficiency in turbidity removal from wastewater in stone cutting industry than other starches.
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Authors
Saideh Usefi
Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
Mahdi Asadi-Ghalhari
Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
Hassan Izanloo
Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
Ahmad Reza Yari
Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
Roqiyeh Mostafaloo
Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
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