Copper uptake potential of Philippine giant bamboo (Dendrocalamus asper) under varied initial copper concentration, water hardness and pH

Authors

• Jerwin Lawrence C. Go, De La Salle University, Manila
• Cynthia F. Madrazo, De La Salle University, Manila
• Aileen H. Orbecido, De La Salle University, Manila
• Ma. Ellenita G. de Castro, De La Salle University, Manila
• Lawrence P. Belo, De La Salle University, Manila

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Document Type

Conference Proceeding

Source Title

MATEC Web of Conferences

Volume

268

First Page

06005

Publication Date

2019

Abstract

Copper is a commonly used metal in construction, engineering, agriculture and water treatment. Consequently, increased copper concentrations resulting in adverse environmental effects is inevitable. Phytoremediation using Dendrocalamus asper or Philippine giant bamboo (PGB) is a viable option for treatment of copper-contaminated media, but their copper uptake potential remains largely unexplored. As such, the copper uptake of PGB was evaluated under varying environmental conditions, namely initial copper concentration, water hardness and pH.Six-month old propagules were planted in artificially contaminated water in order to determine the copper uptake after 16 days of treatment. Using a Box- Behnken design of experiment, it was found that both initial copper concentration and pH have significant and proportional effects on copper uptake. However, due to possible speciation and/or competition, the optimum copper uptake occurred at 20 ppm Cu and pH 5 (as opposed to 7). A mathematical equation, bearing an R2 = 0.7097, was constructed as a possible model for copper uptake of PGB to understand when PGB phytoremediation is most effective. At copper concentrations lower than 3.81 ppm, higher pH is beneficial to copper uptake and vice versa. Overall, phytoremediation using D. asper or PGB is effective especially at low pH and elevated copper concentrations.

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Recommended Citation

Go, J. C., Madrazo, C. F., Orbecido, A. H., de Castro, M. G., & Belo, L. P. (2019). Copper uptake potential of Philippine giant bamboo (Dendrocalamus asper) under varied initial copper concentration, water hardness and pH. MATEC Web of Conferences, 268, 06005. Retrieved from https://animorepository.dlsu.edu.ph/faculty_research/15278

Disciplines

Chemical Engineering

Keywords

Plants—Effect of copper on; Phytoremediation; Soils—Copper content; Bambo

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