BharatNotes Phytoremediation
noun (uncountable)Usage in a UPSC answer
Pilot trials along the Subarnarekha river basin have trialled sunflower-based phytoremediation to immobilise arsenic contamination from coal-ash ponds, demonstrating a cost-effective alternative to expensive ex-situ chemical treatment.
Synonyms
Antonyms
Word Family
phytoremediate (verb), phytoremediator (noun), phytoextraction (noun), rhizofiltration (noun), phytodegradation (noun)
Root
Greek phyton = plant; Latin re- = again; Latin mederi = to heal; -ation = process
Etymology
The term was formalised in the early 1990s by Ilya Raskin and colleagues at Rutgers University, combining Greek phyton (plant) with remediation. The concept built on earlier observations of hyperaccumulator plants — such as Thlaspi caerulescens — that naturally concentrate heavy metals, documented by botanists as early as the 1970s.
Memory Hook
PHYTO (plant) + REMEDIATION (healing). Plants are the healers here — they suck up poisons through their roots and store or destroy them. Sunflowers were used after Chernobyl to absorb radioactive caesium: the ultimate phytoremediation image.
How This Word Works in UPSC Writing
The use of plants to remove, stabilise or break down contaminants in soil and water. In GS3 it is a good example of a nature-based solution: low cost, low energy and suitable for large diffuse contamination, though slow and limited by rooting depth. A point worth adding is disposal, since plants that accumulate heavy metals become contaminated biomass that must itself be managed.
Don’t Confuse It With
Phytoremediation is remediation using plants. Phytoextraction takes contaminants up into harvestable tissue. Phytostabilisation immobilises them in the root zone instead. Rhizofiltration removes contaminants from water through roots, and each suits a different contaminant and medium.
Hindi Meaning
पादप उपचार (pādap upchār).
Common Questions
- What is phytoremediation?
- The use of plants to remove, stabilise or degrade contaminants in soil, sediment or water.
- What happens to plants used in phytoremediation?
- Plants that accumulate heavy metals become contaminated biomass and must be harvested and disposed of safely, which is part of the cost of the method.
Tip: press Alt+S to hear pronunciation
