Role of Chelating Compounds in Biodegradation and Bioremediation

Bhandari, Geeta; Prakash, Om

doi:10.1007/978-3-030-86169-8_13

Cited by 1 publication

(1 citation statement)

References 123 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only twenty Zn-hyperaccumulator species are reported in the Global Hyperaccumulator Database [ 28 ], none of which grow in our northern latitudes. Therefore, metal-tolerant, low-maintenance, and high-biomass-producing species or species combinations are recommended, especially since their phytoremediation ability can be further enhanced through induced phytoremediation [ 29 , 30 , 31 ]. However, even the use of so-called environmentally friendly chelating agents such as nitrilotriacetatic acid (NTA) is far from perfect and should be considered very carefully to avoid further leaching of metal–chelate complexes and symptoms of toxicity in plants [ 23 , 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Willow and Herbaceous Species’ Phytoremediation Potential in Zn-Contaminated Farm Field Soil in Eastern Québec, Canada: A Greenhouse Feasibility Study

Licinio

Laur

Pitre

et al. 2022

Plants

View full text Add to dashboard Cite

Phytoremediation shows great promise as a plant-based alternative to conventional clean-up methods that are prohibitively expensive. As part of an integrated strategy, the selection of well-adapted plant species as well as planting and management techniques could determine the success of a long-term program. Herein, we conducted an experiment under semi-controlled conditions to screen different plants species with respect to their ability to phytoremediate Zn-contaminated soil excavated from a contaminated site following a train derailment and spillage. The effect of nitrilotriacetic acid (NTA) application on the plants and soil was also comprehensively evaluated, albeit we did not find its use relevant for field application. In less than 100 days, substantial Zn removal occurred in the soil zone proximal to the roots of all the tested plant species. Three perennial herbaceous species were tested, namely, Festuca arundinacea, Medicago sativa, and a commercial mix purposely designed for revegetation; they all showed strong capacity for phytostabilization at the root level but not for phytoextraction. The Zn content in the aboveground biomass of willows was much higher. Furthermore, the degree of growth, physiological measurements, and the Zn extraction yield indicated Salix purpurea ‘Fish Creek’ could perform better than Salix miyabeana, ‘SX67’, in situ. Therefore, we suggest implementing an S. purpurea—perennial herbaceous co-cropping strategy at this decade-long-abandoned contaminated site or at similar disrupted landscapes.

show abstract