Measurement of boron in aqueous solutions containing Zannichellia palustris L. and Ruppia maritima L. with different salinity

Existing of brackish and polluted drainage is one of the environmental problems in the southern Iran region, and also many of these drainages move down to the local wetlands. So the aim of this study was B remediation from three aqueous solutions with different salinities, by two native hydrophytes of Iran’s southern wetlands.

In this study, during 120 hours treatment of waters with distinct salinity that contaminated with four different B levels (1, 2, 5, and 10 mg per liter of water), B remediation by two hydrophytes (Zannichellia palustris L. and Ruppia maritima L.) were examined.

The study showed for non-saline water plant uptake a high amount of B and both plant removal efficiency achieved more than 70%. The uptake index of Z. palustris and R. maritima respectively were 0.51 – 8.16 and 0.18 – 8.14 mg pot-1 but these values increased in the saline waters. Biomass production measurement of Z. palustris decreased by increasing B contamination but R. maritima was not affected, and it showed the higher B tolerance of R. maritima.

Totally, Z. palustris removed more B than R. maritima but the bad effect of salinity on R. maritima less than Z. palustris. The results approved the ability of both plants for B remediation in saline waters.