Aquaculture effluent treatment using modified Semnan Green Zeolite
سال انتشار: 1388
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,498
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شناسه ملی سند علمی:
ICAWTR01_158
تاریخ نمایه سازی: 20 اردیبهشت 1390
چکیده مقاله:
Water remediation is important for an economical and environmentally friend aquaculture enterprise. In last 30 years, synthetic and natural zeolites have been increasingly acknowledged due to their capability of removing toxic ions at lower concentrations which are common in aquaculture effluent. Contaminants in aquaculture effluent such as nitrate and nitrate can promote eutrophication of receiving waters and be potentially toxic to aquatic life. These systems are still in their infancy and there is not enough information in this regard. Present study aimed to have more insight into the effects of different ambient pHs (6, 6.5, 7, 7.5 and 8) and temperatures (10, 15 and 20 C)on the ion adsorption capability of modified zeolite. To this end, zeolite obtained from the Semnan, located in the center of Iran, was modified using tetradecyltrimethylamonium bromide (TDTMA) and exposed to effluent from a fish culturing facility. ANOVA revealed that temperature had a well-arranged effect on nitrate and nitrite removal by modified zeolite compared with pH. Zeolite significantly showed higher nitrate and nitrite removal capacity at 15 C (p<0.05). However, pH had not any significant effects on nitrate removal (p>0.05). However, higher nitrite uptake was observed at pH= 6 and ph=8 (p<0.05). To devise an efficient zeolite based removal filters special for aquaculture effluents, more studies are needed in future
کلیدواژه ها:
نویسندگان
Z.S Saljoghi
Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Iran
G Rafiee
Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Iran
A Malekpour
Faculty of Sciences, University of Isfahan, Isfahan, Iran
A Javanshir
Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Iran