تاثیر کربن فعال تولید شده از مخروط های درخت کاج در کاهش پارامترهای شوری آب آبیاری

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان

2 دانشگاه صنعتی اصفهان

3 استاد، گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان

4 4- استادیار، دانشکده شیمی، دانشگاه صنعتی اصفهان

چکیده

شوری آب آبیاری یکی از عوامل مهم در شور شدن خاک، کاهش نفوذپذیری خاک و کاهش محصولات زراعی می­باشد و یافتن روش­های نوین با هزینه کم در کاهش شوری آب آبیاری اجتناب‌ناپذیر است. هدف کلی این تحقیق تولید کربن فعال از مخروط­های درخت کاج و ارزیابی کاربرد آن در جذب یون­های عامل شوری آب آبیاری بود. آزمایش­های جذب در سیستم ناپیوسته انجام شد و تأثیر پارامترهای مؤثر بر جذب شامل زمان تماس، غلظت اولیه یون­های شوری در آب، ایزوترم و سینتیک جذب و همچنین تأثیر جذب بر پارامترهای کیفیت آب آبیاری شامل EC، TDS، TH و SAR مورد بررسی قرار گرفت. نتایج نشان داد که جاذب کربن فعال تهیه‌شده از مخروط­های درختان کاج می­تواند 5/21 درصد از یون­های عامل شوری در هدایت الکتریکی 4/20 دسی زیمنس بر متر را جذب کند و در هدایت الکتریکی­های 4/10 و 6/5 دسی زیمنس بر متر، درصد جذب یون­های عامل شوری به ترتیب به 3/14 و 7 درصد رسیده است. سینتیک و ایزوترم جذب یون­های شوری به ترتیب از مدل شبه مرتبه دوم و ایزوترم فروندلیچ پیروی کرد. همچنین بیشترین کاهش TH و SAR آب آبیاری در شوری 4/20 دسی‌زیمنس بر متر مشاهده گردید که به ترتیب 4/14 و 8/14 درصد کاهش یافتند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of Activated Carbon Produced from Pine Cones in Reducing of Irrigation Water Salinity Parameters

نویسندگان [English]

  • Mohsen Ghasemi 1
  • Jahangir Abedikoopahi 2
  • Manoochehr Heidarpoor 3
  • Mohamad Dinari 4
1 Isfahan University of Technology
2 Isfahan University of Technology
3 Isfahan University of Technology
4 Isfahan University of Technology
چکیده [English]

The irrigation water salinity is one of the important factors in soil salinization, the decrease in soil permeability and reduction of yields. Hence, finding modern and low cost methods to reduce irrigation water salinity is inevitable. The aim of this study is to produce activated carbon from pine cones and the evaluation of its application to adsorb the ions that cause salinity in the irrigation water. Adsorption experiments were conducted in a batch system and the parameters affecting the adsorption including contact time, initial concentration of salinity ions, adsorption isotherm and kinetics, and the effect of adsorption on irrigation water quality parameters including EC, TDS, TH and SAR, were studied. The research results showed that the maximum reduction of salinity in the electrical conductivity of 5.48, 10.41 and 20.4 (dS/m) were 7, 14.3 and 21.5 %, respectively. Adsorption Kinetic and isotherm of salinity ions followed the pseudo-second order reaction and Freundlich isotherm, respectively. The maximum reduction in TH and SAR values in irrigation water was observed in the salimity of 20.4 dS/m, that were reduced by 14.4 and 14.8 percents, respectively.

کلیدواژه‌ها [English]

  • Adsorption
  • salinity
  • Activated carbon
  • kinetic
  • isotherm
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