Chapter 5
This chapter consists of the conclusion of the researchers for the entire study. It also includes the recommendations of the researchers for their corresponding beneficiaries and future researchers who aim to continue in this field.
conclusion
After the data collection process, the researchers were able to conclude the following:
(1)
The average concentration of copper found in the plant tissue after 24 hours, 6 days, 9 days, and 15 days was 2.1849 ppm, 6.8347 ppm, 6.6106 ppm, and 10.0280 ppm, respectively. With 24 hours having the lowest concentration and 15 days having the highest concentration of copper absorbed by the P. hederaceum.
(2)
The average amount of residual copper in the aqueous solution after 24 hours, 6 days, 9 days, and 15 days were -0.0840 ppm, 0.5882 ppm, -0.0280 ppm, and 0.1400 ppm, respectively.
(3)
There is a significant difference in the heavy metal absorbed by the plant in terms of the set interval of days, specifically, plant samples during the 24 hours and 15 days of phytoremediation with a mean difference of 7.84.
recommendations
(1)
The following methodology should be followed with proper scrutiny, so as to avoid discrepancies and errors in data. Proper following of the methodology ensures accuracy and reliability, this makes the data valid and trustworthy. It also helps to maintain ethical standards such as avoiding biases and enhances the impact of the study.
(2)
Consider using different metals to test the plant’s capabilities at removing other substances. Studying different metals enhances the knowledge of the plant’s capabilities. It can provide insights to help various different fields such as agriculture, environmental science, and biochemistry. It can help to identify new strategies to help further improve our understanding.
(3)
Focus on phytoremediation that explores other types of pollutants. As P. hederaceum is mostly studied for its capabilities in air phytoremediation, future researchers may either pursue further research on this type of phytoremediation or explore the other types that P. hederaceum may prove to be more effective in remediating. Future researchers may also focus on phytoremediation studies that remediate heavy metals that contribute to soil pollution, which may endanger both humans and the environment alike (European Environment Agency, 2022).
(4)
Instead of using a fixed concentration for the heavy metal, consider using varying concentrations. This may provide a comparison between concentrations and a deeper discussion on the concentration the plant can absorb best. It may also serve as the hypothesis for future researchers aiming to explore this topic.
(5)
For a more in-depth discussion on the phytoremediation capabilities of P. hederaceum, future researchers can study the natural compounds found in the plant. Exploring the potential reasoning behind the P. hederaceum's remediating abilities will be able to contribute a better understanding of how phytoremediation works in this specific plant.