بررسی اثر استفاده از زئولیت طبیعی کلینوپتیلولیت اصلاح شده در حذف نیترات، فسفات و شوری از زهاب کشاورزی در مدل زهکشی آزمایشگاهی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکترا آبیاری و زهکشی دانشکده مهندسی آب و محیط‌زیست دانشگاه شهید چمران اهواز، اهواز، ایران.

2 دانشیار دانشکده مهندسی آب و محیط‌زیست دانشگاه شهید چمران اهواز، اهواز، ایران،

3 دانشیار دانشکده مهندسی آب و محیط‌زیست دانشگاه شهید چمران اهواز، اهواز، ایران.

4 استاد دانشکده مهندسی آب و محیط‌زیست دانشگاه شهید چمران اهواز، اهواز، ایران.

چکیده

در این مطالعه با هدف بررسی استفاده از زئولیت کلینوپتیلولیت به‌عنوان جاذب در حذف آلاینده‌های نیترات، فسفات و شوری از زهاب کشاورزی، به‌منظور تعیین سطوح مناسب پارامترهای مؤثر بر جذب آلاینده‌ها، آزمایش‌ها به‌صورت ناپیوسته با لحاظ نمودن اثر پارامترهای قطر ذرات جاذب، غلظت آلاینده­ها، میزان شوری، دما، زمان ماند، pH و غلظت جاذب انجام پذیرفت و سپس، آزمایش‌های جذب توسط ساخت یک مدل زهکشی بررسی گردید. آزمایش‌های جذب در چهار مدل که شامل مدل شاهد (D0)، جاذب در اطراف زهکش (D1)، جاذب در محیط ریشه گیاه (D2) و جاذب در سطح خاک (D3) بود، به‌وسیله زهاب طبیعی خروجی از زهکش‌های مزارع جنوب خوزستان، تحت شرایط مناسب پارامترهای مؤثر انجام پذیرفت. نتایج حاصل از این پژوهش حاکی از آن است که، میزان حذف آلاینده­ها و شوری در شرایطی که قطر ذرات جاذب برابر 1000 میکرومتر، غلظت جاذب برابر 30 گرم بر لیتر، pH برابر پنج، غلظت آلاینده‌های ورودی دارای مقادیر ، 80 میلی‌گرم بر لیتر نیترات، 10 میلی‌گرم بر لیتر فسفات و شوری 12 دسی‌زیمنس بر متر، زمان ماند برابر 90 دقیقه و دمای محیط برابر 50 درجه سانتی‌گراد درنظر گرفته شود، بازدهی حذف نیترات، فسفات و شوری به‌ترتیب برابر 63، 39 و 79 درصد خواهد شد. با استفاده از این سطح پارامترها در مدل­های زهکشی مورد مطالعه، در حالتی که جاذب کلینوپتیلولیت در اطراف محیط زهکش قرار دارد (D1)، راندمان حذف برابر 72/59 درصد ، 28/29 درصد و 47/77 درصد به‌ترتیب در حذف نیترات، فسفات و شوری به دست آمد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Using Modified Natural Zeolite Clinoptilolite to Remove Nitrate, Phosphate and Salt from Agricultural Drainage Water in a Drainage System Model

نویسندگان [English]

  • Sara Sadeghi 1
  • Mohammad Albaji 2
  • Mona Golabi 3
  • Saeed BoroomandNasab 4
1 PhD student in Irrigation and Drainage, Faculty of Water and Environment Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
2 Associate Professor and Faculty Member of the Faculty of Water and Environment Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
3 Associate Assistant Professor and Faculty Member of the Faculty of Water and Environment Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
4 Professor and Faculty Member of the Faculty of Water and Environment Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
چکیده [English]

This study examined the feasibility of using zeolite clinoptilolite to filter nitrate, phosphate pollutants and salt from the agricultural drainage water. To that end, significant pollutant absorption parameters, such as adsorbent particle size, pollutant concentration, salinity, temperature, retention time, pH, and adsorbent concentration were optimized in the batch condition. Having optimized the parameters, the researchers conducted adsorption experiments on an experimental model, similar to the subsurface drainage systems applied in farms. Adsorption experiments were carried out at the optimized parameter levels on four models, namely a reference model (D0), a model with adsorbents around the drains (D1), a model with adsorbents around the plant roots (D2), and a model with adsorbents on the soil surface (D3). These models were fed with untreated drainage water from the farms in the south of Khuzestan during the fertilization season. The results showed 63 percent nitrate removal efficiency, 39 percent phosphate removal efficiency and 79 percent salt removal efficiency by using 30 g.L-1 of 1000 µm adsorbent particles for a pH of 5, initial pollutant concentration of 80 mg.L-1 nitrate and 10 mg.L-1 phosphate in 12 dS/m salinity during a 90-minute retention time period at 50 °C ambient temperature. These parameter levels led to nitrate, phosphate, and salt removal efficiencies of 59.72 percent, 29.28 percent, and 77.47 percent respectively, in the model with clinoptilolite adsorbents around the drains (D1).

کلیدواژه‌ها [English]

  • Adsorption
  • Removal Efficiency
  • Phragmites Australis
  • Farms of Khuzestan
  • Natural adsorbent
1- Adinehvand, J., Shokuhi Rad, A. and Tehrani, A.S., 2016. Acid-treated zeolite (clinoptilolite) and its potential to zinc removal from water sample. International Journal of Environmental Science and Technology13(11), pp.2705-2712.
 
2- Bhatnagar, A. and Sillanpää, M., 2011. A review of emerging adsorbents for nitrate removal from water. Chemical Engineering Journal. 168(2), pp.493-504.
 
3- Bibiano-Cruz, L., Garfias, J., Salas-García, J., Martel, R. and Llanos, H., 2016. Batch and column test analyses for hardness removal using natural and homoionic clinoptilolite: breakthrough experiments and modeling. Sustainable Water Resources Management2(2), pp.183-197.
 
4- Bish, D.L. and Boak, J.M., 2001. Clinoptilolite-heulandite nomenclature. Reviews in Mineralogy and Geochemistry45(1), pp.207-216.
 
5- Dang, V.B.H., Doan, H.D., Dang-Vu, T. and Lohi, A., 2009. Equilibrium and kinetics of biosorption of cadmium (II) and copper (II) ions by wheat straw. Bioresource technology100(1), pp.211-219.
 
6- EPA, (2012). 2012 Edition of the drinking water standards and Health Advisors. United States Environmental Protection Agency, EPA822-S-12-001, USA.
7- Eshraghi, F. and Nezamzadeh-Ejhieh, A., 2018. EDTA-functionalized clinoptilolite nanoparticles as an effective adsorbent for Pb (II) removal Environmental Science and Pollution Research. 11, pp.127-133.
 
8- Farzad, N., 2017. Using Natural Zeolite in Planting Bed to Retain Water and Prevent Fertilizer Leaching. in 1st National Conference on Water Management Approach to Optimize Water Use in Agriculture, Hamedan, Permanent Secretariat. (In Persian).
 
9- Gupta, V.K., Agarwal, S.h., Fakhri, A.M. and Sadeghi, A.N., 2017. Application of response surface methodology to optimize the adsorption performance of a magnetic graphene oxide nanocomposite adsorbent for removal of methadone from the environment. J Colloid Interf Sci, 497, pp.193–200.
 
10- Habibollahi, S. and Hajializadeh, A., 2014. TDS Reduction of Industrial Effluent Using Natural Zeolite. in 1st National Conference on the Environment, Dehaghan, Payame Nour University of Dehaghan. (In Persian).
 
11- He, K., Chen, Y., Tang, Z. and Hu, Y., 2016. Removal of heavy metal ions from aqueous solution by zeolite synthesized from fly ash. Environmental Science and Pollution Research, 23(3), pp.2778–2788.
 
12- Hii, S.L., Yong, S.Y. and Wong, C.L., 2009. Removal of rhodamine B from aqueous solution by sorption on Turbinaria conoides (Phaeophyta). Journal of applied phycology21(5), pp.625-631.
 
13- Kashefiolasl, M., Hasani, A. and Naserkhaki, E., 2017. Removal of Nitrate Anion from Water by Surfactant Modified Carbonate Cancrinite Zeolite. in International Symposium on Chemical Engineering and Materials Research, Tehran. Farzin Sustainable Scientific and Industry Development Center. (In Persian).
 
14- Moslemi Kouchesfahani, M., Navabian, M. and Ismaili Varki, M., 2012, Comparison of the efficiency of natural zeolite and modified zeolite in reducing nitrate from polluted waters, in 6th National Conference and Specialized Exhibition of Environmental Engineering, Tehran, Iran. (In Persian).
 
15- Pandey, P.K., Sharma, S.K. and Sambi, S.S., 2015. Removal of lead (II) from waste water on zeolite-NaX. Journal of Environmental Chemical Engineering3(4), pp.2604-2610.
 
16- Physical and Chemical Properties of Drinking Water, in ISIRI 1053 Standard. (In Persian).
 
17- Saadat, M. and Nezamzadeh-Ejhieh, A., 2016. Clinoptilolite nanoparticles containing HDTMA and Arsenazo III as a sensitive carbon paste electrode modifier for indirect voltammetric measurement of Cesium ions. Electrochimica Acta, 217, pp.163-170.
 
18- Sharma, S.K. and Sobti, R.C., 2012. Nitrate removal from ground water: a review. Journal of Chemistry, 9(4), pp.1667-1675.
 
19- Taghdisian, H., Tasharrofi, S. and Hosseinnia, A., 2018. Nitrate Reduction Using Zeolite Clinoptilolite: Kinetic Investigation and Evaluation of Effective Process Parameters. in 5th International Conference on Applied Research in Chemistry and Chemical Engineering with an emphasis on indigenous technology in Iran, Tehran. The Society of Indigenous Technologies of Iran. (In Persian).
 
20- Tangsir, S., Naseri, A., Moazed, H., Hashemi Garm Darreh, S. and Boroumand Nasab, S., 2018. Investigation of the effect of salinity on the performance of denitrification substrates obtained from soil and sugarcane bagasse for nitrate removal. Iranian Journal of Water Research, 12 (3), pp.51-60. (In Persian).
 
21- Yargholi, B. and Azarneshan, S., 2014. Water and wastewater sampling and analysis instructions. Agricultural Technical and Engineering Research Institute, Agricultural Research, Education and Extension Organization, Ministry of Jihad Agriculture. (In Persian).