Treatment of Oilfield Soils Contaminated With ²²⁶Ra, ²¹⁰Pb and ²¹⁰Po Using Ultrasound and Acid Washing.

IF 2.2 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Bulletin of Environmental Contamination and Toxicology Pub Date : 2025-03-22 DOI:10.1007/s00128-025-04018-9

M S Al-Masri, Y Amin, H Khalily

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Abstract

A method to treat soils contaminated with ²²⁶Ra, ²¹⁰Pb and ²¹⁰Po using ultrasonic waves has been developed. Diluted acidic solutions were used as washing media for the radionuclides. The optimum treatment conditions such as the ratio of soil to solution, contact time, temperature, concentration of washing solution, and soil particle size have been determined. The results showed that the efficiency of soil washing using ultrasonic waves could reach 95% for both ²²⁶Ra and ²¹⁰Pb. The acidic solutions HCl (5%) and HNO₃ (5%) were found to give the highest removal efficiency for ²²⁶Ra and ²¹⁰Pb. On the other hand, the efficiency of ultrasonic treatment was found to be inversely related to both electrical conductivity of soil solution, the concentration of dissolved ions (Cl^-, HCO^3-, Ca²⁺, and Mg²⁺), and the concentration of organic matter in the soil. However, the method may be useful for treatment of the oilfields soil contaminated with ²²⁶Ra, ²¹⁰Pb and ²¹⁰Po.

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超声+酸洗法处理226Ra、210Pb和210Po污染油田土壤

研究了一种利用超声波处理226Ra、210Pb和210Po污染土壤的方法。用稀释的酸性溶液作为放射性核素的洗涤介质。确定了土液比、接触时间、温度、洗涤液浓度、土壤粒径等最佳处理条件。结果表明，超声波对226Ra和210Pb的洗土效率均可达95%。酸性溶液HCl（5%）和HNO3（5%）对226Ra和210Pb的去除率最高。另一方面，超声波处理的效率与土壤溶液电导率、溶解离子（Cl-、HCO3-、Ca2+和Mg2+）浓度和土壤有机质浓度呈负相关。但该方法可用于处理226Ra、210Pb和210Po污染的油田土壤。

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来源期刊

Bulletin of Environmental Contamination and Toxicology 环境科学-毒理学

CiteScore

5.60

自引率

3.70%

发文量

230

审稿时长

1.7 months

期刊介绍： The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.