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Use of Hydrogels and Biochar to Reduce Heavy Metal Uptake by Wastewater Irrigated Potato and Spinach Plants
Authors: Dhiman, Jaskaran, ElSayed, Eman, Nzediegwu, Christopher, Mawof, Ali
Identifier: CSBE18108
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Published in: CSBE-SCGAB Technical Conferences » AGM Guelph 2018
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Description: Global human population is expected to rise to 9.7 billion by year 2050, leading to increase in food demand. Irrigation water requirement would place additional stress on our already stressed freshwater resources. Since agriculture is the largest freshwater consumer, alternate sources of irrigation water such as wastewater would help us conserve planet’s precious resource in a cost-effective way. However, wastewater contains contaminants such as heavy metals which could be detrimental to plant and human health. Aim of this study was to determine the effect of polyacrylamide super-absorbent-polymer (SAP) and SAP-plantain peel biochar (PPB) mix soil incorporation on heavy metal uptake in potato and spinach irrigated with wastewater. Plants were grown in lysimeters (1.00 m X 0.45 m dia.) packed with sandy soil in a complete randomized design (three replicates) with treatments: SAP, SAP-PPB and control. The amendments were incorporated in top 0.10m of soil at the rate of 1% (w/w). Different parts of plants were harvested for heavy metal analysis. SAP+BC treatment significantly (p<0.05) reduced Cd, Cu and Zn uptake in edible flesh tissue of potato tubers as compared to control as well as Cd uptake in edible tuber peel tissue. SAP was also able to significantly (p<0.05) reduce Cd uptake in edible parts of the plant. Treatments SAP and SAP-PPB were also able to reduce Cd, Cr and Zn uptake in spinach leaves compared to control.
Keywords: Wastewater irrigation, heavy metal uptake, super absorbent polymers, hydrogels, biochar, potato, spinach
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Date: 2018-07-22
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Conference name: CSBE/SCGAB 2018 Annual Conference, School of Engineering, University of Guelph, Guelph, Ontario, July 22-25 2018.
Session name: Waste Water Treatment and Reuse I
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Type: Text.Article
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Publication type: Technical conference
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Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
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DOI:
Description: Global human population is expected to rise to 9.7 billion by year 2050, leading to increase in food demand. Irrigation water requirement would place additional stress on our already stressed freshwater resources. Since agriculture is the largest freshwater consumer, alternate sources of irrigation water such as wastewater would help us conserve planet’s precious resource in a cost-effective way. However, wastewater contains contaminants such as heavy metals which could be detrimental to plant and human health. Aim of this study was to determine the effect of polyacrylamide super-absorbent-polymer (SAP) and SAP-plantain peel biochar (PPB) mix soil incorporation on heavy metal uptake in potato and spinach irrigated with wastewater. Plants were grown in lysimeters (1.00 m X 0.45 m dia.) packed with sandy soil in a complete randomized design (three replicates) with treatments: SAP, SAP-PPB and control. The amendments were incorporated in top 0.10m of soil at the rate of 1% (w/w). Different parts of plants were harvested for heavy metal analysis. SAP+BC treatment significantly (p<0.05) reduced Cd, Cu and Zn uptake in edible flesh tissue of potato tubers as compared to control as well as Cd uptake in edible tuber peel tissue. SAP was also able to significantly (p<0.05) reduce Cd uptake in edible parts of the plant. Treatments SAP and SAP-PPB were also able to reduce Cd, Cr and Zn uptake in spinach leaves compared to control.
Keywords: Wastewater irrigation, heavy metal uptake, super absorbent polymers, hydrogels, biochar, potato, spinach
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2018-07-22
Technical field:
Conference name: CSBE/SCGAB 2018 Annual Conference, School of Engineering, University of Guelph, Guelph, Ontario, July 22-25 2018.
Session name: Waste Water Treatment and Reuse I
Other information:
Type: Text.Article
Format:
Publication type: Technical conference
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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