Optimization of lead (Pb) bioaccumulation in Melastoma malabathricum L. by response surface methodology (RSM)

Siti Norleela Selamat, Mohd Izuan Effendi Bin Halmi, Siti Rozaimah Sheikh Abdullah, Mushrifah Idris, Hassimi Abu Hasan, Nurina Anuar

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Phytoremediation using the tropical plant Melastoma malabathricum L. has been investigated as an alternative to conventional treatment methods for the remediation of lead (Pb) contamination in soil. In the present study, lead (Pb) bioaccumulation by M. malabathricum L. was evaluated and optimized using response surface methodology (RSM). The Box–Behnken design (BBD) was used to maximize the removal of lead (Pb), with three major variables employed (Pb concentration in sand: 20–70 mg/kg; exposure time: 14–70 days; aeration rate: 0–3 mL/min) in the optimization. The predicted optimum conditions were 44.1 mg Pb/kg for the lead (Pb) concentration in sand, an exposure time of 14 day and 0 L/min aeration rate, with an actual lead (Pb) bioaccumulation of 3596.0 mg Pb/kg. This value compares well to the value predicted by RSM (3855.1 mg Pb/kg). The difference between the validation value and the predicted value was within 6.7%, indicating that RSM was able to predict the optimum lead (Pb) bioaccumulation precisely with very low error. The maximum lead (Pb) bioaccumulation can be attained without requirement of aeration, resulting in a cost-effective treatment system.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalRendiconti Lincei
DOIs
Publication statusAccepted/In press - 9 Nov 2017

Fingerprint

Melastoma malabathricum
bioaccumulation
response surface methodology
aeration
exposure duration
sand
soil pollution
phytoremediation
remediation
Environmental Biodegradation
Lead
Health Care Costs
Soil
cost

Keywords

  • Bioaccumulation
  • Lead
  • Phytoremediation
  • Response surface methodology

ASJC Scopus subject areas

  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)
  • Earth and Planetary Sciences(all)

Cite this

Optimization of lead (Pb) bioaccumulation in Melastoma malabathricum L. by response surface methodology (RSM). / Selamat, Siti Norleela; Halmi, Mohd Izuan Effendi Bin; Sheikh Abdullah, Siti Rozaimah; Idris, Mushrifah; Abu Hasan, Hassimi; Anuar, Nurina.

In: Rendiconti Lincei, 09.11.2017, p. 1-9.

Research output: Contribution to journalArticle

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