Reduction of Cadmium Uptake by Potato Tubers Grown in Hydrogel Amended Soils
Description: Heavy metals can be introduced to soils from a vari¬ety of sources such as industrial emissions, mining, disposal of wastes containing high quantities of heavy metals, sewage sludge and wastewater irrigation. Cadmium, which is one of the common heavy metal contaminants found in environment, poses a serious threat to ecosystem, animal and human health. Therefore, the goal of the present study is to evaluate the effect of the addition of hydrogels and plantain peel biochar (PPB) as soil amendments in promoting the removal of cadmium in sandy soil, irrigated with untreated wastewater. A four-month study in a field lysimeters (planted with potato) was conducted to investigate uptake of cadmium by potato tubers as well as the fate and transport of cadmium in the soil profile. After harvest, potato flesh and peel were digested and analyzed separately for cadmium concentration using ICP-OES. Results showed that in the hydrogel and hydrogel+biochar treatments, cadmium uptake (average) was reduced by 77.7% and 94.2%, respectively for potato peels, and by 53.1% and 80.0%, respectively for potato flesh samples. This could promote use of hydrogels and plantain peel biochar for safe use of wastewater for irrigation.
Keywords: hydrogel; super absorbent polymer; cadmium; biochar; potato; soil conservation; heavy metal; contaminants in soil; wastewater irrigation; lysimeter
Conference name: CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Session name: Session 1A: Water Management I
Citation: . 2016. Reduction of Cadmium Uptake by Potato Tubers Grown in Hydrogel Amended Soils. CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering