The potential of Mikania micrantha (Chinese creeper) to hyperaccumulate heavy metals in soil contaminated by electronic waste

Ho Man Leung, Patrick Y K YUE, Cho Wing SZE, Chi Kin Au, Kwai Chung Cheung, Ka Loi Chan, Kin Lam YUNG*, Wai Chin Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The objective of this study is to investigate the contributions of Mikania micrantha (chinese creeper) to remediate heavy metal pollutants present in an e-waste-contaminated soil. Different proportions of e-waste soil (0%, 25%, 50%, 75%, and 100% w/w) planted with Cynodon dactylon together with the test species were prepared for testing relative seed germination (RSG), relative root growth (RRG), and germination index (GI) tests. A significant higher value of GI (77.8%) was found in M. micrantha than that of the other species when planting in 100% e-waste-contaminated soil. A significant correlation (< 0.05) was found between heavy metal concentration and germination assays in M. micrantha. A significant decrease in heavy metal concentration of the polluted soil after the experiment indicated that biomolecule development studies to determine the aggregate benefit of M. micrantha for phytoremediation remain to be studied in future.

Original languageEnglish
Pages (from-to)35275-35280
Number of pages6
JournalEnvironmental Science and Pollution Research
Volume26
Issue number34
DOIs
Publication statusPublished - 1 Dec 2019

Scopus Subject Areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

User-Defined Keywords

  • Germination index
  • heavy metals
  • Mikania micrantha
  • phytoremediation
  • relative root growth
  • relative seed germination

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