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Title: Application of plant based green technology for molybdenum remediation
Authors: Wong, Seok Peng
Keywords: DRNTU::Science
Issue Date: 2014
Publisher: Nanyang Technological University
Abstract: Rising demand for molybdenum (Mo) generates large land area of metalliferous soil with anthropogenic activities (Anthony, 2013). Phytoremediation technologies appear to have good potential in the remediation of Mo-contaminated soil. Selection of plants with appropriate traits e.g. high accumulation capacity, large biomass and great tolerance to phytotoxicity is a crucial factor for successful phytoremediation project. Currently, only few Mo-hyperaccumulator species have been identified (Boojar & Tavakkoli, 2011). This study aims to investigate the potential of Axonopus compressus (A.c) as a Mo-hyperaccumulator plant. A.c showed tolerance when spiked with 600 ppm Mo soil concentration where it was found to accumulate 3984 ± 342 ppm of Mo in the yellow leaves, reaching the accumulation level required for a Mo-hyperaccumulator ( >1500 ppm). Physiological parameters were monitored to determine the effect of phytotoxicity stress on A.c. Although a significant decline in photosynthetic rate was observed over the 5 weeks, A.c appeared bushy and healthy with no significant change in chlorophyll content. A rise in nitrogen content further showed the adaptability of A.c to Mo toxicity stress. In conclusion, this study showed that A.c is a potential Mo-hyperaccumulator and the results obtained would be useful for further study on Mo hyperaccumulation.
Schools: School of Biological Sciences 
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:SBS Student Reports (FYP/IA/PA/PI)

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