Bioaccumulations of Heavy Metals in Ipomoea aquatica Grown in Bottom Ash Recycling Wastewater

A plant bioassay using hydroponically grown Ipomoea aquatica (water spinach) was applied to assess the phytotoxicity of untreated and treated wastewaters from a municipal solid waste incineration bottom ash recycling facility. The 50%-diluted, untreated wastewater exhibited acute toxicity (plants di...

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Bibliographic Details
Published in:Water environment research 2014-05, Vol.86 (5), p.398-406
Main Authors: Milla, Odette Varela, Rivera, Eva B., Huang, Wu-Jang
Format: Article
Language:English
Subjects:
Bioaccumulation
Biomass
bottom ash
Chemical precipitation
Flowers & plants
Heavy metals
Hydroponics
Incinerators
Ipomoea - drug effects
Ipomoea - metabolism
Ipomoea aquatica
Irrigation water
Metals, Heavy - pharmacokinetics
Metals, Heavy - toxicity
Municipal solid waste
municipal solid waste incineration
Nutrient solutions
Phytotoxicity
Plant roots
Spinach
Spinacia oleracea
strontium
Waste Disposal, Fluid - methods
Waste Water - analysis
Wastewater
Wastewater treatment
Water Pollutants, Chemical - pharmacokinetics
Water Pollutants, Chemical - toxicity
Water pollution
Water reuse
water spinach
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Summary:A plant bioassay using hydroponically grown Ipomoea aquatica (water spinach) was applied to assess the phytotoxicity of untreated and treated wastewaters from a municipal solid waste incineration bottom ash recycling facility. The 50%-diluted, untreated wastewater exhibited acute toxicity (plants died within 24 hours). Highly diluted doses (3 and 6%) of both wastewater types displayed no significant differences when compared with the control. Treating the wastewater through sequential physical filtration and chemical precipitation processes decreased not only the dissolved solids content but also the pH and salt content. In addition, significant accumulations of Sr, Cr, and Sn were observed in the hydroponically grown I. aquatica plant tissues; in particular, the bioaccumulation of Sr in the leaves and roots was unexpectedly high.
ISSN:1061-4303
1554-7531
DOI:10.2175/106143013X13807328849738