پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 161 |
| تعداد شماره‌ها | 6,532 |
| تعداد مقالات | 70,502 |
| تعداد مشاهده مقاله | 124,119,501 |
| تعداد دریافت فایل اصل مقاله | 97,225,901 |
مدلسازی کمی رهاسازی پتاسیم از فلدسپار توسط باکتری باسیلوس | ||
| تحقیقات آب و خاک ایران | ||
| مقاله 9، دوره 48، شماره 1، اردیبهشت 1396، صفحه 95-103 اصل مقاله (2.96 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2017.61344 | ||
| نویسندگان | ||
| ساناز اشرفی سعیدلو1؛ میرحسن رسولی صدقیانی2؛ فرخ اسدزاده* 3؛ محسن برین4 | ||
| 1دانشجوی دکتری گروه علــوم خاک، دانشگاه ارومیه | ||
| 2دانشیار گروه علــوم خاک، دانشگاه ارومیه | ||
| 3عضو هیات علمی گروه مهندسی علوم خاک دانشگاه ارومیه | ||
| 4استادیار گروه علــوم خاک، دانشگاه ارومیه | ||
| چکیده | ||
| پتاسیم یکی از عناصر غذایی ضروری برای رشد گیاهان بوده و در ساختار بسیاری از کانیهای سیلیکاتهی خاک یافت میشود. برخی از میکروارگانیسمها نظیر باکتریها، قارچها، جلبکها و گلسنگها کارآیی بالایی در تجزیه سیلیکاتها و آزادسازی عناصری نظیر پتاسیم از آنها را دارند. این مطالعه با هدف مدلسازی و ارزیابی تأثیر متغیرهای pH، زمان انکوباسیون و مقادیر مختلف کانی فلدسپار بر میزان رهاسازی پتاسیم توسط باکتری Bacillus sp. انجام شد. برای این منظور دامنههای متفاوتی از این سه متغیر شامل pH (9-5)، زمان انکوباسیون (17-1 روز) و فلدسپار (7-1 گرم در لیتر) در نظر گرفته شده و طرح مرکب مرکزی با 20 آزمایش و بر اساس مقادیر کدبندی شده متغیرهای مستقل طراحی شد. نتایج نشان داد که مدل طرح مرکب مرکزی قابلیت مطلوبی (892/0 = R2و mgl-196/1 = RMSE) در پیشبینی مقدار پتاسیم محلول دارد. تحلیل حساسیت مدل طرح مرکب مرکزی نشان داد که از بین سه متغیر مورد بررسی، مقدار کانی فلدسپار و pH بیشترین تأثیر را بر آزادسازی پتاسیم دارند بطوریکه درصد اثر این دو متغیر بر مقدار پتاسیم محلول به ترتیب برابر با 48/37 و 80/31 درصد به دست آمد. حداکثر غلظت پتاسیم محلول در پایینترین pH و بیشترین مقدار کانی فلدسپار مشاهده شد. زمان انکوباسیون نیز تأثیر معنیداری بر آزادسازی پتاسیم داشت. روند آزادسازی پتاسیم در مراحل اولیه انکوباسیون افزایشی، در مراحل میانی کاهشی و در ادامه افزایشی بود. به‌طورکلی افزایش مقدار کانی فلدسپار و طول دورهی انکوباسیون همراه با pH اولیهی پایین محیط، سبب افزایش قابل‌توجه کارآیی باکتری Bacillus sp.در انحلال پتاسیم شد. | ||
| کلیدواژه‌ها | ||
| کلمات کلیدی: میکروارگانیسم‌های خاک؛ آزادسازی پتاسیم؛ طرح مرکب مرکزی | ||
| عنوان مقاله [English] | ||
| Quantitative Modeling of the Potassium Release from Feldspar by Bacillus sp. | ||
| نویسندگان [English] | ||
| Sanaz Ashrafi Saeidloo1؛ Mirhasan Rasouli Sadaghiani2؛ Farrokh Asadzadeh3؛ Mohsen Barin4 | ||
| چکیده [English] | ||
| Potassium (K) is one of the essential nutrients for plant growth and it is found in the structure of many silicate minerals of soils. Soil microorganisms such as bacteria, fungi, algae and lichens have high efficiency in silicates decomposing and releasing elements such as potassium. The purpose of this study was to model and evaluate the effects of pH, incubation time and different amounts of feldspar on K release by Bacillus sp. For this reason different ranges of these three variables, including pH (5-9), incubation time (1-17 days) and feldspar (1-7 g.l-1) was considered and a central composite design with 20 experiments was used to evaluate the effects of the coded independent variables on K release from the feldspar. Results indicated that the central composite design has high efficiency (R2= 0.982, RMSE= 1.96mgl-1) in predicting soluble K concentration. Sensitivity analysis of the central composite design revealed that the pH and treated feldspar concentration are the most important factors in K release and the effect of these factors on K release are 37.48 and 31.80 percent, respectively. The highest concentration of the K was observed at high concentrations of feldspar and lowest levels of pH. Incubation time also had a significant effect on potassium release. In the early stages of the incubation time, the trend of potassium release was increased, in middle stages, K amount decreased but it was accelerated at the long times of incubation. Generally, increasing of the feldspar concentration and incubation time along with low initial pH lead to the high amounts of K release from feldspar. | ||
| کلیدواژه‌ها [English] | ||
| Keywords: Soil microorganisms, potassium release, Central composite design | ||
| مراجع | ||
|
Aleksandrov, V. G. Blagodyr, R. N. and Ilev, I. P. (1967). Liberation of phosphoric acid from apatite by silicate bacteria. Mikrobiol Z (Kiev). 29, 111-114. Amanpour, J. Salari, D. Niaei, A. Mousavi, S. M. and Panahi, P. N. (2013). Optimization of Cu/activated carbon catalyst in low temperature selective catalytic reduction of NO process using response surface methodology. Journal of Environmental Science and Health. Part A, 48(8), 879-886. Avakyan, Z. A. Belkanova, N. P. Karavaiko, G. I. and Piskunov, V. P. (1985). Silicon compounds in solution bacteria quartz degradation. Microbiology. 54(2), 250-256. Badr, M. A. Shafei, A. M. and Sharaf El-Deen, S. H. (2006). The dissolution of K and P-bearing minerals by silicate dissolving bacteria and their effect on sorghum growth. Research Journal of Agriculture and Biological Sciences. 2(1), 5-11. Barker, W. W. Welch, S. A. Chu, S. and Banfield, J. F. (1998). Experimental observations of the effects of bacteria on aluminosilicate weathering. American Mineralogist, 83(11), 1551-1563. Barth, T. W. F. (1969). Feldspars. New York: Wiley-Interscience. Bevan, J. and Savage, D. (1989). The effect of organic acids on the dissolution of K-feldspar under conditions relevant to burial diagenesis. Mineralogical Magazine. 53, 415-425. Bin, L. (1998). A study on how silicate bacteria GY92 dissolves potassium from illite. Acta Mineralogica Sinica. 2, 018. Chen, H. and Chen, T. (1960). Characteristics of morphology and physiology and ability to weather mineral baring phosphorus and potassium of silicate bacteria. Microorganism. 3, 104–112. Dix, N. J. and Webster, J. (1995). Fungal Ecology. (p. 57). Cahpman & Hall, Cambridge, UK. Ebrahimi Karim-Abad R. and Rasouli-Sadaghiani, M.H. (2014). Isolation of phosphate solubilizing microorganisms from wheat rhizosphere and evaluation of their solubilization potential in in-vitro and greenhouse conditions. MSc. dissertation, University of Urmia, Iran. Goulding, K.W.T. (1984). The availability of potassium in soils to crops as measured by its release to calcium saturated cation exchange resin. Journal of Agricultural Science. 103, 265-275. Groudev, S. N. (1987). Use of heterotrophic microorganisms in mineral biotechnology. Acta Biotechnologica. 7(4), 299-306. Hu, X. Chen, J. and Guo, J. (2006). Two phosphate-and potassium-solubilizing bacteria isolated from Tianmu Mountain, Zhejiang, China. World journal of Microbiology and Biotechnology. 22(9), 983-990. Lian, B. Fu, P. Q. Mo, D. M. and Liu, C. Q. (2002). A comprehensive review of the mechanism of potassium releasing by silicate bacteria. Acta Mineralogica Sinica. 22(2), 179-183. Lian, B. Wang, B. Pan, M. Liu, C. and Teng, H. H. (2008). Microbial release of potassium from K-bearing minerals by thermophilic fungus Aspergillus fumigatus. Geochimica et Cosmochimica Acta. 72(1), 87-98. Liu, W. Xu, X. Wu, X. Yang, Q. Luo, Y. and Christie, P. (2006). Decomposition of silicate minerals by Bacillus mucilaginosus in liquid culture. Environmental Geochemistry and Health. 28(1-2), 133-140. Lotfi Parsa, H. Khademi, H. Ayoubi, S.H. and Hadinjad, A. (2012). Time changes of potassium release amount from feldspar in Medica sativa L. rhizosphere. Soil Research Journal . 26(1), 111-121. (In Farsi) Malakouti, M.J. Shahabi, A. and Bazargan, K. (2006). Potassium in Iran agriculture. Sana publication. Tehran. (In Farsi) Mengel, K. and Kirkby, E.A. (2001). Principles of plant nutrition (5th ed.). (p.849) Kluwer Academi. Publishers, Dordrecht. Mousavi, S. M. Niaei, A. Salari, D. Panahi, P. N. and Samandari, M. (2013). Modelling and optimization of Mn/activate carbon nanocatalysts for NO reduction: comparison of RSM and ANN techniques. Environmental technology. 34(11), 1377-1384. Mousavi, A. Khiamim, F. and Shariatmadari, H. (2015). The kinetics of potassium release from K-feldspar, compared with muscovite under the influence of different extractants. Journal of Sciences and Technology of Agriculture and Natural Resources. 67, 229-240. (In Farsi) Myers, R. H., Montgomery, D. C., and Anderson-Cook, C. M. (2016). Response surface methodology: process and product optimization using designed experiments. John Wiley & Sons. Norouzi, S. Khademi, H. and Shirvani, M. (2012). The kinetics of K release from muscovite and phlogopite with organic acids. Journal of Soil and Water Research. 42, 163-173. (In Farsi) Øgaard, A. F. and T. Krogstad. (2005). Release of interlayer potassium in Norwegian grassland soils. Soil Science and Plant Nutrition. 168, 80-88. Padmavathi, T. (2015). Optimization of phosphate solubilization by Aspergillus niger using plackett-burman and response surface methodology. Journal of soil science and plant nutrition. 15(3), 781-793. Parmar, P. and Sindhu, S. S. (2013).Potassium solubilization by rhizosphere bacteria: influence of nutritional and environmental conditions. Journal of Microbiology Research. 3(1), 25-31. Rajendran, A. Thirugnanam, M. and Thangavelu, V. (2007). Statistical evaluation of medium components by Plackett-Burman experimental design and kinetic modeling of lipase production by Pseudomonas fluorescens. Indian Journal of Biotechnology. 6(4), 469. Sheng, X. F. and He, L. Y. (2006). Solubilization of potassium-bearing minerals by a wild-type strain of Bacillus edaphicus and its mutants and increased potassium uptake by wheat. Canadian journal of microbiology. 52(1), 66-72. Sparks, D. L., and Huang, P. M. (1985). Physical chemistry of soil potassium. Potassium in agriculture. (potassiuminagri). (pp. 201-276). Štyriaková, I., Štyriak, I., Nandakumar, M. P., & Mattiasson, B. (2003). Bacterial destruction of mica during bioleaching of kaolin and quartz sands by Bacillus cereus. World Journal of Microbiology and Biotechnology. 19(6), 583-590. Swetha, S. Varma, A. and Padmavathi, T. (2014). Statistical evaluation of the medium components for the production of high biomass, a-amylase and protease enzymes by Piriformospora indica using Plackett–Burman experimental design. Biotechnology. 4, 439–445. Syers, J. K. (2002). Potassium in soils: current concepts. Feed the soil to feed the people. The role of potash in susta-inable agriculture, 301. Tisdale, S.L. Nelson, W.L. Beaton, J.D. and Havlin, J.L. (2003). Soil Fertility and Fertilizers (5th ed.). Prentice-Hall of India, New Delhi, India. Ullman, W. J. Kirchman, D. L. Welch, S. A. and Vandevivere, P. (1996). Laboratory evidence for microbioally mediated silicate mineral dissolution in nature. Chemical Geology. 132(1), 11-17. Vandevivere, P. Welch, S. A. Ullman, W. J. and Kirchman, D. L. (1994). Enhanced dissolution of silicate minerals by bacteria at near-neutral pH. Microbial Ecology. 27(3), 241-251.
| ||
|
آمار تعداد مشاهده مقاله: 1,131 تعداد دریافت فایل اصل مقاله: 943 |
||