Question

High surface roughness of the collector particle results in

Select one:

a. increased deposition rate

b. reduced energy barrier on approach

c. physical trapping of nanoparticles by surface features

d. all of the above

When nZVI is used for remediation of contaminated soil and groundwater,

Select one:

a. Fe⁰ is oxidized, H⁺ is reduced, TCE is oxidized

b. Fe⁰ is reduced, H⁺ is oxidized, TCE is reduced

c. Fe⁰ is reduced, H⁺ is oxidized, TCE is oxidized

d. Fe⁰ is oxidized, H⁺ is reduced, TCE is reduced

Answer 1

1)

high surface roughness of the collector particle results in increased deposition rate, reduced energy barrier on approach and physical trapping of nanoparticles by surface features.

So (d) all the above is the answer

2)

when When nZVI is used for remediation of contaminated soil and groundwater

d) Fe0 is oxidized, H+ is reduced, TCE is reduced

Fe0 is oxidized to Fe3O4

H+ is reduced to form H2

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