Phytoremediation and metal uptake in food plants
2007 (English)In: ECO-TECH 2007, 2007, 513-522 p.Conference paper (Other academic)
This paper reviews some of our resent findings on metal uptake in phytotechnology and food plants. The Cd concentration in wheat grains can be decreased by pytoextraction by Salix prior to wheat cultivation. Water spinach commonly grown in nutrient rich waste water are able to form methyl-Hg in new leaves, but high nutrient level in cultivation medium decreases the metal concentration in the plant. Wetland plants grown on mine tailings are able to decrease the formation of acid mine drainage from the tailings. Submerged plants can increase the retention of metals in wetlands treating metal polluted water, but the efficiency depends on the quality of the inlet water. Plants can be used to prevent leakage of metals and nutrients from dry covers containing sewage sludge on mine tailing impoundments. If the sealing layer below the cover layer consists of fly ash root penetration can be prevented while if it contains a mixture of sewage sludge and fly ash roots will grow into the sealing layer. Macro algae as fertilizers in agriculture increase the biomass production but also transfer Cd to the crop. Therefore, algae should be used in production of non food crops, however, not suitable for hemp cultivation.
Place, publisher, year, edition, pages
2007. 513-522 p.
IdentifiersURN: urn:nbn:se:su:diva-21825OAI: oai:DiVA.org:su-21825DiVA: diva2:188352