Kousar Hina, Puttaiah E T
Department of Post Graduate Studies and Research in Environmental Science, Kuvempu University, Shankarghatta-577 451, India.
J Environ Biol. 2009 Sep;30(5):659-61.
The ability of aquatic plants to absorb, translocate and concentrate metals has led to the development of various plant-based treatment systems. The potential to accumulate metals like iron, nickel, manganese and copper by Trapa bipinosa was assessed by subjecting them to different effluent concentrations of pulp and paper industry under laboratory conditions. Trapa showed the ability to accumulate substantial amounts of the metals during a short span of one week. When the plants were grown in different concentrations they caused significant reduction in various parameters like dissolved oxygen, biological oxygen demand, chemical oxygen demand, total alkalinity total hardness, chloride and sulphate. While there was an increase in biomass, no visible phytotoxic symptoms were shown by treated plants.
水生植物吸收、转运和富集金属的能力促使了各种基于植物的处理系统的发展。通过在实验室条件下将菱角置于不同浓度的制浆造纸工业废水环境中，评估了其积累铁、镍、锰和铜等金属的潜力。菱角在短短一周内就表现出积累大量金属的能力。当植物在不同浓度的废水中生长时，它们使溶解氧、生物需氧量、化学需氧量、总碱度、总硬度、氯化物和硫酸盐等各种参数显著降低。虽然生物量有所增加，但处理后的植物未表现出明显的植物毒性症状。
