Removal of boron from wastewater: Evaluation of seven poplar clones for B accumulation and tolerance

The results showed that, with increasing level of B supply, the B concentrations in the shoot tissue of the poplar clones increased, while shoot biomass decreased

Zhifan Chen; Alicia A. Taylor; Savina R. Astor; Junliang Xin; Norman Terry

2016

Scholarcy highlights

  • Boron contamination of wastewater is a serious environmental and health problem, which has proved difficult to remediate
  • The purpose of this study was to investigate the ability of seven hybrid poplar clones to accumulate and tolerate B at different levels of B and salinity
  • The clones were grown in quarter strength Hoagland's nutrient solution and exposed to four B treatments: 0.25, 25, 75 and 125 mg B L−1 in factorial combination with three salinity treatments: 0, 0.5 and 5 g L−1
  • The results showed that, with increasing level of B supply, the B concentrations in the shoot tissue of the poplar clones increased, while shoot biomass decreased
  • Comparison of the seven different poplar clones revealed that the clone designated 195–529 exhibited the greatest ability for B accumulation and tolerance
  • The 0.5 g L−1 level of salinity was beneficial for poplar growth and B removal, while the high salinity level of 5 g L−1 significantly inhibited poplar growth and B translocation from roots to shoots
  • Based on the results obtained with this hydroponic system, the clone 195–529 is likely to be the most useful for the removal of B from B contaminated wastewater

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