Applications of Organic and Inorganic Amendments Induce Changes in the Mobility of Mercury and Macro- and Micronutrients of Soils
نویسندگان
چکیده
Both soil organic matter and sulfur (S) can reduce or even suppress mercury (Hg) mobility and bioavailability in soil. A batch incubation experiment was conducted with a Chernozem and a Luvisol artificially contaminated by 440 mg · kg(-1) Hg showing wide differences in their physicochemical properties and available nutrients. The individual treatments were (i) digestate from the anaerobic fermentation of biowaste; (ii) fly ash from wood chip combustion; and (iii) ammonium sulfate, and every treatment was added with the same amount of S. The mobile Hg portion in Chernozem was highly reduced by adding digestate, even after 1 day of incubation, compared to control. Meanwhile, the outcome of these treatments was a decrease of mobile Hg forms as a function of incubation time whereas the contents of magnesium (Mg), potassium (K), iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), and phosphorus (P) were stimulated by the addition of digestate in both soils. The available calcium (Ca) contents were not affected by the digestate addition. The experiment proved digestate application as the efficient measure for fast reduction of mobile Hg at extremely contaminated soils. Moreover, the decrease of the mobile mercury portion was followed by improvement of the nutrient status of the soils.
منابع مشابه
تأثیر کاربرد مواد آلی و نیتروژن معدنی بر تجزیه شیمیایی و زیستی علفکش آترازین در خاک
This study was conducted to compare the impact of various organic amendments with different C/N ratios and chemical compositions on biological and chemical degradation of Atrazine in sterile and non-sterile soils. The experiment was carried out in a factorial arrangement (2×6×2) including two soil types (sterile and non sterile soils), six types of organic amendments (vermicompost, cow manure, ...
متن کاملComparison of different inorganic amendments on decreasing of Cd, Pb, Ni, Cu, and Zn sorption by wastewater-irrigated plants
Background and Objective: Heavy metals fixation in-situ by using inorganic amendments is a method for immobilization of polluted soils. The goal of this research was to determine efficiency of five amendments for heavy metals fixation of waste-water-irrigated soils around Tabriz city. Materials and Methods: Cadmium, Pb, Cu, Ni, and Zn- containing solutions were added to 0.5 gram of five amendm...
متن کاملEffects of organic and inorganic amendments on weed management in sweet maize
Field experiments were conducted to determine the effects of organic andinorganic amendments on weed suppression in sweet maize cultivation (Zea maysL.). A randomized complete block design was employed with four replicates pertreatment with each organic amendment used at half (x/2), single (x=10 t ha-1) anddouble (2x) rates (organic fertilization: cow manure, poultry manure and barleymulch; syn...
متن کاملتاثیر اصلاحکنندههای خاک روی تعییرات آبنمود و رسوبنمود در شرایط آزمایشگاهی
Insufficient information regarding the time distribution of runoff and sediment yield during a storm event is one of the available major issues in the success soil and water conservation projects. However, limited studies have been considered in various scales and especially in cooperation with application of amendments on hydrograph and sediment graphs. Hence, the present laboratory research w...
متن کاملSorption, degradation and leaching of pesticides in soils amended with organic matter: A review
The use of pesticides in modern agriculture is unavoidable because they are required to control weeds. Pesticides are poisonous; hence, they are dangerous if misused. Understanding the fate of pesticides will be useful to use them safely. Therefore, contaminations of water and soil resources could be avoided. The fates of pesticides in soils are influenced by their sorption, decomposition and m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 2014 شماره
صفحات -
تاریخ انتشار 2014