Assessment of phyto-remediation efficiency and crop productivity of castor-based rice mill effluent (RME) wetland system.
Das A, Sathya R, Mallick RK
Phytoremediation
If you've ever wondered whether a fast-growing plant could do double duty — cleaning fouled water while producing harvestable seed — castor's performance in these rice mill runoff trials is the proof-of-concept that makes that vision real.
Rice mills produce large amounts of dirty wastewater full of nutrients and organic matter that can harm the environment. Researchers planted castor — a fast-growing oil-seed plant — in specially designed wetland beds and flushed this wastewater through them. The castor plants thrived on the nutrient-rich water, cleaned it up significantly, and produced four times more seeds than plants grown in normal soil.
Key Findings
50% diluted rice mill effluent removed 65–72% of nitrogen compounds and over 70% of organic pollutants (COD/BOD) from wastewater.
Castor seed yield increased fourfold (from 22 g to 91 g per plant) and harvest index reached 60.6% when grown in effluent-enriched soils.
Soil microbial health improved markedly, with a 77% increase in microbial biomass carbon and 76% rise in dehydrogenase activity, indicating enhanced soil fertility.
chevron_right Technical Summary
Castor plants grown in constructed wetlands can clean up polluted rice mill wastewater while producing useful biomass — achieving both environmental cleanup and crop yield simultaneously. At 50% effluent dilution, castor removed up to 72% of nitrogen compounds and 70%+ of organic pollutants, while seed yields quadrupled.
Abstract Preview
For major paddy producing countries like India, rice mill effluent (RME) poses a persistent environmental challenge by dint of its high organic and nutrient loads. Among various methods of treatmen...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Chloroplast Genome Editing Eliminates Gluten Immunogenicity in Triticum aestivum
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...
Beavers are large semiaquatic rodents of the Northern Hemisphere. There are two extant species: the North American beaver and the Eurasian beaver. Beavers are the second-largest living rodents, after capybaras, weighing up to 50 kg (110 lb). They have stout bodies with large heads, long chisel-li...