TY - JOUR

T1 - Remediation of heavy metal contaminated soils by dissolved organic matter

AU - Borggaard, Ole K.

AU - Holm, Peter Engelund

AU - Strobel, Bjarne W.

PY - 2020

Y1 - 2020

N2 - Dissolved organic matter (DOM) isolated from soils enriched in fulvic acid (FA) or from processed organic wastes rich in low-molecular-weight-organic-acids (LMWOAs) was tested as extractant of heavy metals (HMs) from contaminated soils. The test showed that DOM can be as effective as the environmentally problematic, synthetic aminopolycarboxylic acids such as EDTA and NTA. Therefore, DOM is suggested as a possible chelant in remediation of contaminated soils by chelant-enhanced phytoextraction and soil washing. However, the efficiency of DOM as chelant depends on numerous factors, e.g., pH, the soil and DOM compositions and extraction time, which need further studies before DOM can be recommended for practical use in the field.

AB - Dissolved organic matter (DOM) isolated from soils enriched in fulvic acid (FA) or from processed organic wastes rich in low-molecular-weight-organic-acids (LMWOAs) was tested as extractant of heavy metals (HMs) from contaminated soils. The test showed that DOM can be as effective as the environmentally problematic, synthetic aminopolycarboxylic acids such as EDTA and NTA. Therefore, DOM is suggested as a possible chelant in remediation of contaminated soils by chelant-enhanced phytoextraction and soil washing. However, the efficiency of DOM as chelant depends on numerous factors, e.g., pH, the soil and DOM compositions and extraction time, which need further studies before DOM can be recommended for practical use in the field.

U2 - 10.1504/IJARGE.2020.115329

DO - 10.1504/IJARGE.2020.115329

M3 - Journal article

VL - 16

SP - 278

EP - 288

JO - International Journal of Agricultural Resources, Governance and Ecology

JF - International Journal of Agricultural Resources, Governance and Ecology

SN - 1462-4605

IS - 3/4

ER -