آخرین محصولات

Cleaning up Chernobyl with Sunflowers – Athens Science Observer

In a process called phytoremediation, hyperaccumulating plants are used to clean up environmental contamination. Well, it just so happens that sunflowers are particularly adept at extracting radioactive metals, like the cesium-137 and strontium-90 found at Chernobyl. After the Chernobyl disaster fields of sunflowers were planted to …

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Radionuclide Basics: Cesium-137 | US EPA

Radionuclide Basics: Cesium-137. Cesium (chemical symbol Cs) is a soft, flexible, silvery-white metal that becomes liquid near room temperature, but easily bonds with chlorides to create a crystalline powder. The most common radioactive form of cesium is Cs-137. Cesium-137 is produced by nuclear. for use in medical devices and gauges.

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ART Engineering LLC

ART Engineering LLC (ART) is a remediation company specialized in ex-situ soil treatment using Soil Washing, Bioremediation and Thermal Desorption Treatment Systems. ART principals have 25+ years of full scale project implementations and backgrounds in Mining, Mineral Processing and Contaminated Soil Remediation.

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Stable and radioactive cesium: A review about

Volume 618, 15 March 2018, Pages 1459-1485 Review Stable and radioactive cesium: A review about distribution in the environment, uptake and …

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Washing of Fallout Radioactive Cesium in Tea Plants

The results obtained were as follows: 1) High-pressure washing was applied to tea leaves, twigs and branches contaminated with radioactive cesium at 7.5MPa of …

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Effective washing removal of radioactive cesium from …

September 2021. This review summarizes the mechanisms for desorbing and extracting cesium (Cs+) from clay minerals and soil. Most techniques use ion exchange …

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Effective washing removal of radioactive cesium from soils using

Conventional washing methods release little radioactive cesium fixed in soils. Adding a Cs+ adsorbent to a suspension of Cs-contaminated soil rapidly removes the Cs+ released to the solution, causing more Cs+ release from the soil. We investigated this method by adding a sheet embedded with mordenite powder to a suspension of 133Cs+ …

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Radiocesium Accumulation in Kosura (Eleutherococcus

The forests where wild vegetables grow are too expansive to decontaminate – cleaning up contaminated fallen leaves and other debris on the ground was performed only within 20 m from residential areas. ... Akama A (2013) Radioactive cesium contamination of edible wild plants after the accident at the Fukushima Daiichi Nuclear …

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Effects of Operation Variables and Electro-kinetic Field on Soil

The operation variables and electro-kinetic field (EKF) were investigated to enhance the remediation of arsenic (As)- and cesium (Cs)-contaminated soils with soil washing. Extractant types, concentrations, liquid/solid (L/S) ratios, solution pH values, washing temperatures, and agitation modes were important criteria to determine the …

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How to Save Yourself From Radiation Poisoning After a Nuclear …

Step 5 Shielding. The next logical step is to shield yourself from radiation, which will help lessen exposure. Shelters are the obvious choice, but even clothes can help reduce the amount of ...

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Simultaneous removal of suspended fine soil particles

Request PDF | Simultaneous removal of suspended fine soil particles, strontium and cesium from soil washing effluent using inorganic flocculants | The purpose of this study was to remove suspended ...

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Remediation of plants contaminated with cesium by

This study examined the efficacy of aqueous cleaning as a means of removing radioactive cesium contamination from plant materials. The products of this …

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Costs and Consequences of the Fukushima Daiichi Disaster

The destruction of the Fukushima Daiichi nuclear power plant in March 2011, caused by an earthquake and subsequent tsunami, resulted in massive radioactive contamination of the Japanese mainland. In November 2011, the Japanese Science Ministry reported that long-lived radioactive cesium had contaminated 11,580 square miles (30,000 sq km) of the ...

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Examination of a Water Washing Method for Radioactive Cesium …

RAD disk has a high recovery rate as a method for separating and concentrating radioactive cesium in a cleaning solution obtained by washing fly ash from municipal waste incineration with water ...

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Radioactivity in the Ocean: Diluted, But Far from Harmless

The Tokyo Electric Power Company (TEPCO) has reported that seawater containing radioactive iodine-131 at 5 million times the legal limit has been detected near the plant. According to the Japanese news service, NHK, a recent sample also contained 1.1 million times the legal level of radioactive cesium-137.

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Removal of Radioactive Cesium in Secondary Wastewater after …

Objectives : Secondary wastewater is generated as the soil washing process proceeds to restore contaminated soil near the nuclear power plants (NPPs).

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A critical review on soil washing during soil remediation for heavy

Soil washing is widely considered as a common method of soil remediation. This study examined the developments in soil washing during the past 20 years via a bibliometric and systematic critical review. Different washing agents (inorganic and organic chelating agents and surfactants) exhibit different effects and mechanisms under varying …

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(PDF) Disruption of AtHAK/KT/KUP9 enhances plant cesium …

Disruption of AtHAK/KT/KUP9 enhances plant cesium accumulation under low potassium supply. 1. Laure Genies 1,2, Ludovic Martin 1, Satomi Kanno 1, Serge Chiarenza 1, Loïc Carasco 2, ie ...

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Decontamination of radioactive cesium-contaminated soil …

The parameters (reagent component, pH, and temperature) of the washing solution should be determined considering soil mineral type (here, weathered biotite …

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A study on the evaluation of cesium removal …

Conclusions. The most suitable method of removing radionuclides from soil contaminated as a result of unexpected accidents during dismantling and maintenance of …

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A laboratory study of washing of SRS high-level waste radioactive

@article{osti_10157536, title = {A laboratory study of washing of SRS high-level waste radioactive sludge-evidence for insoluble sodium and cesium-137}, author = {Hay, M S and Bibler, N E}, abstractNote = {Experiments in the Shielded Cells at the Savannah River Technology Center were undertaken to simulate the full-scale sludge …

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Remediation of plants contaminated with cesium by aqueous cleaning

Aqueous cleaning removed two-thirds of the radioactivity from cesium-contaminated plants. Instead of being transferred to the water, cesium was attached to particles of rice straw. These particles were analyzed by micro-PIXE to determine the surface distribution of several elements. The elemental ratio of cesium to silicon was …

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Scientific, technical publications in the nuclear field | IAEA

Scientific, technical publications in the nuclear field | IAEA

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Stable and radioactive cesium: A review about

2. Stable and radioactive cesium in the environment. Cesium occurs naturally in soil and water as stable isotope derived from soil minerals. Radioactive radiocesium is generated mainly by three reasons: discharge from reprocessing plants, global fallout after testing of nuclear weapons, and fallout after accidents such as the …

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Cesium Processing | Equipment, Process Flow, …

Cesium (Cs) is a waxy, silvery-gold metallic element that is the softest of all metals. Cesium is one of three metals (gallium and mercury) that are liquid at or near room temperature. Cesium is a very …

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Washing of Fallout Radioactive Cesium in Tea Plants …

Comparisons of effective half-lives of radiocesium in Japanese tea plants after two nuclear accidents, Chernobyl and Fukushima. K. Tagami, S. Uchida, T. Shinano, G. …

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Terrorists could make a dirty bomb from this common medical …

Regulators have ignored warnings that the licensing of devices containing radioactive cesium-137 should stop, and hundreds remain in use, an L.A. Times investigation has found.

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Effective washing removal of radioactive cesium from …

Conventional washing methods release little radioactive cesium fixed in soils. Adding a Cs+ adsorbent to a suspension of Cs-contaminated soil rapidly remov Effective washing removal of radioactive cesium from soils using adsorbents: a proposed adsorbent-coexistence method | SpringerLink

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Destiny of Bikini Is Again At the Mercy of Technology

Cesium and potassium are closely related elements. In the potassium-deficient soil of coral islands, according to the Bikini studies, plants treat cesium as an analogue to potassium and consume it ...

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Preferential removal and immobilization of stable and

In this work, the capability of nanometallic Ca/CaO methanol suspension in removing and/or immobilizing stable (133 Cs) and radioactive cesium species (134 Cs and 137 Cs) in contaminated fly ash was investigated.After a first methanol and second water washing yielded only 45% of 133 Cs removal. While, after a first methanol washing, the …

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