en en en en en en en en en en en en en en en en en it en en en de ru en en ru en en en en en en en en en sv en fr en en de en en en en en en en eo en en en zh en en en en hu ne en en en en en en en en en en en en en en en en en en en en en mt en en en en nl de sv fr en en en en
About the Journal In Memory of Professor Jerzy Radecki Editorial Office Editorial Board Scope Impact Factor Indexed in... Journal Impact Factor contributing items Contact Subscription Current issue Online first Notes to Authors Frequently Asked Questions Submission Archive
Soil Washing Technology for Removing Heavy Metals from a Contaminated Soil: A Case Study
Khalid A. Alaboudi 1,2
Ecosystem and Forest Science, University of Melbourne, Australia
National Center of Biotechnology Information, King Abdulaziz City for Science and Technology, Saudi Arabia
Faculty of Veterinary and Agricultural Sciences, Dookie Campus, University of Melbourne, Australia
University of Melbourne, Australia
Final revision date: 2019-02-10
Online publication date: 2019-09-17
Pol. J. Environ. Stud. 2020;29(2):1029–1036
Heavy metals contamination of soil
Although EDTA solution is considered an efficient soil washing liquid for extraction of heavy metals from soils, its low biodegradability may alter soil properties and suppress plant growth. Alternatively, chlorides are safer and cheaper washing liquids than EDTA. To investigate the efficiency of chlorides versus EDTA in extracting heavy metals from contaminated soils, soil samples (pH 6.14±0.11) were collected from a local agriculture soil in Australia, artificially contaminated with either Pb, Cd or Cr at three different levels of 200, 400 and 600 mg kg-1, and then packed in capped plastic flasks. Batch washing techniques were followed with either EDTA or FeCl3 solutions (prepared at 4 different concentrations of 0.05, 0.1, 0.25 and 0.5 M), and soil suspensions were agitated for different time periods (from 5.0 min. to 60.0 min); afterward, the extraction efficiencies of the investigated metals were considered. The removal efficiency of Pb from the contaminated soil (200 mg Pb kg-1) after 5 minutes of EDTA application seemed to be relatively high (≈75%). Afterward this efficiency decreased gradually with time. The efficiencies of the extracted Cd and Cr by soil washing with EDTA increased significantly with increases in the agitating period. Generally, the extraction efficiencies by EDTA decreased noticeably with increasing levels of soil contamination. On the other hand, the efficiencies of Pb, Cd and Cr extractions were high – especially when increasing both the concentrations of applied FeCl3 solution and the time of agitation. The results also highlighted that soil washing with FeCl3 seemed to be more favourable over EDTA for rapid extraction of heavy metals from contaminated soils. The efficiencies of extracting heavy metals by soil washing with 0.5M FeCl3 for only one hour were 93.79±2.35%, 97.4±2.45% and 81.75±7.86% for Pb, Cd and Cr, respectively.
Study on the General Situation and Trend of Pesticide in Global Soil System
The Effect Mechanism of Fertilization Measures on the Three-dimensional Fluorescence Characteristics of Soil DOM Components
Medicinal Plants Status, Habitat Degradation Factors and Rehabilitation Possibilities in Sra Ghurgai Protected Area Takatu Mountain Range Quetta Pakistan
Study on the Desorption Behavior and Bioavailability of Polycyclic Aromatic Hydrocarbons in Different Rocky Desertification Soils
Effects of Humic Acid and EDTA on Phytoremediation, Growth and Antioxidant Activity in Rapeseed (Brassica napus L.) Grown under Heavy Metal Stress
© 2006-2022 Journal hosting platform by Bentus
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.