Optimization of culturing conditions and selection of species for the use of halophytes as biofilter for nutrient-rich saline water
Optimization of culturing conditions and selection of species for the use of halophytes as biofilter for nutrient-rich saline water
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DOI：
10.1016/j.agwat.2014.11.001
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发表时间：
2015-02-01
影响因子：
6.7
通讯作者：
Papenbrock, Jutta
中科院分区：
文献类型：
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作者：
Buhmann, Anne K.;Waller, Uwe;Papenbrock, Jutta
耐盐植物可用作营养丰富的盐水（如水产养殖工艺用水）的生物过滤器。Tripolium pannonicum（Jacq.）多布罗茨用于确定最佳的培养条件下，一个有效的生物过滤器的性能，在养分循环植物吸收。通过考虑不同的参数，如生物量生产，植物氮和磷的吸收，以及生理参数和硝酸盐-N和磷酸盐-P浓度的降低，在实验流体中的这种性能进行了评估。之后，研究了被称为可食用的其他植物物种，以遵循除了用作生物过滤器之外还产生有价值的副产品的想法。结果表明，硝酸盐氮浓度至少为10毫克升（-1）是必要的合理的生物量生产。0.3毫克升（-1）的磷酸盐-P浓度是足够的，但更高的浓度促进磷酸盐-P的吸收。此外，铁的螯合形式是健康的植物生物量的生长所需的;锰的添加是有益的，但不是绝对必要的。低于海水盐度的盐浓度促进生物量生产和养分吸收。如果需要控制条件和养分循环，则使用水培系统比砂或膨胀粘土培养更合适。在0.24 m2的水槽中，对不同盐生植物物种进行了为期五周的比较试验，每种植物的地上鲜重为185至398 g，氮和磷的总吸收量分别为0.6至2.1 g和0.1至0.4 g。所有测试的物种都有可能作为生物过滤器和有价值的副产品的来源。一个有前途的应用是在海洋水培系统中的盐生蔬菜植物的生长。(C)2014爱思唯尔有限公司版权所有。
Salt-tolerant plants can be used as biofilters for nutrient-rich saline water such as aquaculture process water. Tripolium pannonicum (Jacq.) Dobrocz. was used to determine optimal culturing conditions for an efficient biofilter performance in terms of nutrient recycling by plant uptake. This performance was evaluated by taking different parameters into account, such as biomass production, plant nitrogen and phosphorus uptake as well as physiological parameters and decrease of nitrate-N and phosphate-P concentrations in the experimental fluid. Afterwards, additional plant species known as edible were studied to follow the idea of generating valuable co-products beside the use as biofilter. It was shown that a nitrate-N concentration of at least 10 mg l(-1) is necessary for reasonable biomass production. A phosphate-P concentration of 0.3 mg l(-1) is sufficient, but higher concentrations promote the uptake of phosphate-P. The addition of iron in chelated form is required for the growth of healthy plant biomass; the addition of manganese is beneficial but not implicitly necessary. Salt concentrations lower than seawater salinity promote biomass production and nutrient uptake. The use of a hydroponic culture system is more suitable than sand or expanded clay culture if controlled conditions and nutrient recycling are desired. The five weeks experiment to compare different halophyte species in 0.24 m(2) tanks with nine plants each resulted in above ground fresh weight of 185 to 398 g and total uptake of nitrogen and phosphorus of 0.6 to 2.1 g and 0.1 to 0.4g, respectively. All tested species have potential to serve as biofilter and source for valuable co-products. A promising application is the growth of halophytic vegetable plants in marine aquaponic systems. (C) 2014 Elsevier B.V. All rights reserved.