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نعیمی, مریم. (1405). مروری تحلیلی بر کاربرد فناوری رسوب‌گذاری کربنات القاشده توسط آنزیم در تثبیت خاک و کنترل گردوغبار. سامانه مدیریت نشریات علمی, 40(2), 263-281. doi: 10.22092/ijsr.2026.372984.821
مریم نعیمی. "مروری تحلیلی بر کاربرد فناوری رسوب‌گذاری کربنات القاشده توسط آنزیم در تثبیت خاک و کنترل گردوغبار". سامانه مدیریت نشریات علمی, 40, 2, 1405, 263-281. doi: 10.22092/ijsr.2026.372984.821
نعیمی, مریم. (1405). 'مروری تحلیلی بر کاربرد فناوری رسوب‌گذاری کربنات القاشده توسط آنزیم در تثبیت خاک و کنترل گردوغبار', سامانه مدیریت نشریات علمی, 40(2), pp. 263-281. doi: 10.22092/ijsr.2026.372984.821
نعیمی, مریم. مروری تحلیلی بر کاربرد فناوری رسوب‌گذاری کربنات القاشده توسط آنزیم در تثبیت خاک و کنترل گردوغبار. سامانه مدیریت نشریات علمی, 1405; 40(2): 263-281. doi: 10.22092/ijsr.2026.372984.821

مروری تحلیلی بر کاربرد فناوری رسوب‌گذاری کربنات القاشده توسط آنزیم در تثبیت خاک و کنترل گردوغبار

پژوهش های خاک
مقاله 8، دوره 40، شماره 2، شهریور 1405، صفحه 263-281    اصل مقاله (1.41 M)
نوع مقاله: مقاله مروری
شناسه دیجیتال (DOI): 10.22092/ijsr.2026.372984.821
نویسنده
مریم نعیمی*
بخش تحقیقات بیابان، مؤسسه تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران.
چکیده
گردوغبار یکی از چالش‌های اصلی محیط‌زیستی در نواحی خشک و نیمه‌خشک (از جمله ایران) است و بر سلامت، زیرساخت‌ها و کیفیت محیط زیست اثر منفی دارد. محدودیت روش‌های رایج کنترل فرسایش بادی و تثبیت سطح خاک، نیاز به راهکارهای نوین، سازگار با محیط‌زیست و قابل‌کاربرد در مقیاس وسیع را افزایش داده است. در این رابطه، رسوب‌گذاری کربنات القاشده توسط آنزیم (EICP) به‌عنوان فناوری نوظهور، بر پایه هیدرولیز اوره توسط آنزیم اوره‌آز و تشکیل کربنات کلسیم در فضای بین‌دانه‌ای عمل می‌کند. این فرایند با ایجاد پیوند بین ذرات و تشکیل پوسته سطحی می‌تواند مقاومت خاک را افزایش داده و فرسایش‌پذیری بادی را کاهش دهد. مطالعه حاضر، با رویکردی مروری-تحلیلی، سازوکار EICP، عوامل مؤثر بر کارایی آن، منابع مختلف اوره‌آز (به‌ویژه منابع گیاهی) و کاربردها و چالش‌های این فناوری در کنترل گردوغبار را بررسی می‌کند. نتایج نشان داد که کارایی EICP به دما، pH، غلظت اوره و کلسیم، نوع خاک، روش اجرا (تزریق/پاشش)، منشأ و فعالیت آنزیم و شرایط محیطی وابسته است. با وجود نتایج امیدوارکننده آزمایشگاهی و نیمه‌میدانی، چالش‌هایی مانند یکنواختی رسوب، مدیریت آمونیوم، دوام بلندمدت، شوری و استانداردسازی منابع آنزیمی همچنان پابرجاست. منابع گیاهی اوره‌آز به دلیل قابلیت دسترسی بیشتر، هزینه کمتر و سازگاری محیط زیستی، گزینه‌ای امیدبخش برای کاربردهای گسترده در کانون‌های بحرانی گردوغبار هستند؛ اما نیازمند بهینه‌سازی فرایند و آزمون‌های میدانی بلندمدت‌اند.
کلیدواژه‌ها
تثبیت بیولوژیکی خاک؛ اوره‌آز گیاهی؛ کنترل فرسایش بادی؛ گرد و غبار؛ فعالیت اوره آز
عنوان مقاله [English]
Enzyme-Induced Carbonate Precipitation for Soil Stabilization and Dust Control: An Analytical Review
نویسندگان [English]
Maryam Naeimi
Desert Research Division, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
چکیده [English]
Background and Objectives: Fugitive dust emissions and dust storms represent a critical environmental and land-management problem in arid and semi-arid regions, where sparse vegetation, surface disturbance, drought, and salinity accelerate wind erosion and soil degradation. Conventional dust suppression and stabilization practices often face limitations such as short service life, high water consumption, recurring maintenance, or ecological incompatibility. Enzyme-Induced Carbonate Precipitation (EICP) has emerged as a bio-mediated alternative that can improve soil structure through calcium carbonate bonding without the operational complexity of handling living microorganisms. This study aims to (i) explain the fundamental mechanism of EICP and its relevance to dust control, (ii) identify the key operational and soil-related parameters governing treatment efficiency, (iii) assess the suitability of different urease sources—particularly plant-derived urease—for large-scale applications, and (iv) summarize the principal technical, environmental, and research challenges that must be addressed to enable reliable field deployment in critical dust hotspots.
Methodology: An analytical narrative review was conducted by synthesizing research on urease-driven carbonate precipitation, EICP-based soil improvement, and surface stabilization for wind erosion mitigation. The literature was examined with emphasis on: reaction chemistry (urea hydrolysis and carbonate generation), precipitation behavior (CaCO₃ content, crystal morphology, and spatial distribution), treatment implementation (spraying, percolation, shallow injection, and multi-cycle application), and field-relevant performance indicators (crust formation, strength improvement, permeability variation, and erosion resistance). The review also compared urease sources (commercial/purified, microbial, and plant-derived) in terms of availability, cost, activity stability, and environmental compatibility, and compiled reported limitations including non-uniform cementation, pore clogging risk, by-product management, and durability under weathering.
Results: The reviewed evidence indicates that EICP can significantly enhance near-surface cohesion by precipitating calcium carbonate within pore spaces and at grain contacts, thereby promoting interparticle bonding and forming a protective crust. Such crusting can increase surface resistance to aerodynamic forces and reduce particle detachment, supporting the potential use of EICP as a dust suppression measure in loose sandy and silty soils commonly associated with active dust sources. Treatment performance is strongly controlled by temperature and pH (which affect urease kinetics and carbonate availability), enzyme activity and dosage, urea and calcium concentrations and their molar balance, and the choice of calcium salt. Soil texture and pore structure influence reagent transport and precipitation uniformity; coarse materials may allow deeper penetration but require repeated cycles to achieve adequate crust integrity, whereas finer materials can produce stronger surface sealing but may exhibit localized clogging and heterogeneity. Application strategy is likewise decisive: surface spraying is practical for large areas but tends to create depth gradients in CaCO₃, while percolation or shallow injection can improve penetration at the cost of higher operational complexity. Plant-derived urease is highlighted as a promising route for scaling EICP, since it may reduce costs and improve accessibility for extensive treatment in remote drylands; however, variability in extraction protocols, enzyme stability, and activity quantification can limit reproducibility unless standardized procedures are adopted. Across studies, persistent constraints include uneven precipitation distribution, uncertain long-term performance under wetting–drying and salt cycles, and environmental concerns related to ammonium generation and potential salinity impacts.
Conclusion: EICP is a developing yet highly promising technology for environmentally compatible soil stabilization and dust control. By enabling carbonate-based cementation without reliance on viable microbial cultures, it offers practical advantages for deployment under harsh field conditions. The literature supports its capacity to form erosion-resistant surface crusts and improve mechanical properties relevant to wind erosion mitigation, but translation to routine field practice requires targeted optimization. Future progress depends on establishing performance-based design criteria linked to dust-control outcomes, improving treatment uniformity through refined delivery protocols, standardizing plant-urease extraction and activity reporting, and implementing effective management strategies for ammonium and salinity risks. Well-designed pilot and long-term field trials in representative dust hotspots are essential to validate durability, quantify environmental trade-offs, and define robust guidelines for large-scale application.
 

 
کلیدواژه‌ها [English]
Biological soil stabilization, Plant-Derived Urease, Wind erosion control, Dust, Urease activity
مراجع
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