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As(V)/Cr(VI) retention on un-amended and waste-amended soil samples: competitive experiments

Focusing on simultaneous arsenic and chromium pollution, we used batch-type experiments to study As(V)/Cr (VI) competitive sorption on soil samples, pyritic material, mussel shell, oak ash, pine bark and hemp waste, as well as on binary mixtures (50 % mussel shell and 50 % another material-oak ash, pine bark, or hemp waste), and on forest and vineyard soil samples and pyritic material amended with 48 t ha^(-1) of mussel shell, oak ash, pine bark, or hemp waste. Equal As(V) and Cr(VI)…

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Focusing on simultaneous arsenic and chromium pollution, we used batch-type experiments to study As(V)/Cr (VI) competitive sorption on soil samples, pyritic material, mussel shell, oak ash, pine bark and hemp waste, as well as on binary mixtures (50 % mussel shell and 50 % another material-oak ash, pine bark, or hemp waste), and on forest and vineyard soil samples and pyritic material amended with 48 t ha-1 of mussel shell, oak ash, pine bark, or hemp waste. Equal As(V) and Cr(VI) concentrations (0 to 6 mmol L-1) were added to the individual materials, binary mixtures, and 48 t ha-1 amended materials. The individual forest soil sample, pyritic material, and oak ash showed clearly higher As(V) sorption, whereas Cr(VI) sorption was higher on pine bark. Sorption was up to 50 % higher for As(V) than for Cr(VI) on the forest soil sample, oak ash, and pyritic material, while pine bark sorbed 95 % more Cr(VI). Regarding binary mixtures, the presence of mussel shell increased As(V) sorption on pine bark and Cr(VI) sorption on hemp waste. As regards the amendments, in the case of the forest soil sample, the amendments with oak ash and mussel shell increased As(V) sorption, while pine bark amendment increased Cr(VI) sorption; in the vineyard soil sample, the mussel shell amendment increased As(V) sorption; in the pyritic material, pine bark amendment increased Cr(VI) sorption. These results could be useful to appropriately manage the soils and individual or mixed by-products assayed when As(V) and Cr(VI) pollution occurs.

Keywords: Arsenic; Chromium; Competitive sorption; Hemp waste; Mussel shell; Oak ash; Pine bark.

Source: https://pubmed.ncbi.nlm.nih.gov/27822690/?utm_source=no_user_agent&utm_medium=rss&utm_campaign=pubmed-2&utm_content=1854v2hhZntXmjLwJ2c8ICqk5dHszkjKaegUwgxvTg53irEIHf&fc=20200804212743&ff=20200812123339&v=2.11.5

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Three more Ag Things to Know

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Montana hemp update. Montana won't be implementing its USDA-approved Hemp Plan beginning Nov. 1 after all, due to the recent pilot program … Source:

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COVID-19 UPDATE: CBD Oil Market 2020 Size and Growth Factors Research and Projection …

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Global CBD Oil Market report brings together a meticulous study of the present and upcoming opportunities to elucidate the future investment in the … Source:

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Hemp-Based Foods Market (COVID-19 Updated) Research Report with Top Key Players- Hemp

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Hemp-Based Foods Market 2020 this report is including with the COVID19 Outbreak Impact analysis of key points influencing the growth of the market. Source:

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