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Arsenic Remediation with Dried Plant

Quantity vs. Time Experiment

For this experiment, we want to analyze for 2 things:

  • The time to reduce the arsenic contamination level below 10μg/L (WHO standard).
  • Adsorbent quantity vs. level of contamination.
  • Various experiments of contamination level vs. amount of adsorbent was conducted and the results are as follow:

    Water Hyacinth Water Lily Duckweed Fern

    Water Hyacinth (Eichhornia Crassipes)

    Arsenic contamination level = 100 ppb

    The above graphs show us at 100ppb, it took 45 min for 1gr of water hyacinth to reduce the arsenic level down to ≤ 10μg/L. As you notice, the time also reduce as more water hyacinth was used.

    Arsenic contamination level = 200 ppb

    At 200ppb with 2gr of water hyacinth, it also took 45 min to reduce the arsenic level down to ≤ 10μg/L.

    Arsenic contamination level = 300 ppb

    At 300ppb, it took 45 min to reduce the arsenic level down to ≤ 10μg/L but 4gr of water hyacinth was needed.

    Initial conclusion, an average of 45 min to reduce the arsenic level down to ≤ 10μg/L and more water hyacinth was needed as level of As contamination increases.

    Eichhornia crassipes (commonly known as water hyacinth), is an aquatic plant native to the Amazon basin, and is often a highly problematic invasive species outside its native range. One of the fastest growing plants known, water hyacinth is a free-floating perennial aquatic plant (or hydrophyte) native to tropical and sub-tropical. In their native range these flowers are pollinated by long tongued bees and they can reproduce both sexually and clonally. The invasiveness of the hyacinth is related to its ability to clone itself and large patches are likely to all be part of the same genetic form.