Department of Chemical Engineering, Landmark University, Omu-Aran, Nigeria.
Department of Agricultural and Biosystems Engineering, Landmark University, Omu-Aran, Nigeria.
Int J Phytoremediation. 2021;23(13):1382-1390. doi: 10.1080/15226514.2021.1900062. Epub 2021 Mar 22.
Batch-fed horizontal sub-surface flow constructed wetlands (HssFCW) were developed to compare the potential of C and in removing heavy metals and nutrients from piggery effluent. Piggery effluent samples were characterized for nutrients (N and P) and metals (Mg, Al, Ca and Fe) before and after introducing them to the HssFCW with hydraulic retention time (HRT) of 3 days and operational flowrate of 0.014 m/day. Three sets of constructed wetlands (CWs) were monitored during the dry season for 3 months. The bioconcentration factor (BCF) and translocation factor (TF) for the plants were evaluated. The results were all significantly different at ≤ 0.05. removes more nutrients and metals than . The BCF for . was higher than for while the TF was higher for indicating a higher metal translocation potential. Use of a non-food crop, poses no health risks in HssFCWs whereas the grains of are consumed directly by humans, presenting potential risks when used in HssFCWs. Compared to an annual , the perennial can be grown continuously in CWs for the phytoremediation of piggery effluent. Novelty statementNo known work about the phytoremediation potential of the two studied macrophytes in the agro-ecological zone is known. The study also provides insight into the bioconcentration of metals in the edible part of . FARO 44 (SIPI 692033).The characterization of piggery effluent revealed that its compositions were above the allowable limit for reuse and recycling despite the adoption of low-water use intensive method.The study showed that accumulates more metals in the above-ground tissues than in its root and provide insight into its use as a phytoremediation plant in the study area.The footprint of pollutants and metals in makes a perennial more suitable than in piggery effluent phytoremediation.
批次进水水平潜流人工湿地（HssFCW）被开发出来，以比较 C 和 从养猪场废水中去除重金属和营养物质的潜力。在将养猪场废水以水力停留时间（HRT）为 3 天和操作流速为 0.014 米/天引入 HssFCW 之前和之后，对养猪场废水进行了营养物质（N 和 P）和金属（Mg、Al、Ca 和 Fe）的特性分析。在旱季，三组人工湿地（CW）进行了 3 个月的监测。评估了植物的生物浓缩因子（BCF）和迁移因子（TF）。所有结果在 ≤ 0.05 时均有显著差异。 去除更多的营养物质和金属比 。 的 BCF 高于 ，而 的 TF 高于 ，表明 具有更高的金属迁移潜力。使用 一种非食用作物，在 HssFCWs 中不会带来健康风险，而 的谷物则直接被人类食用，在 HssFCWs 中使用时存在潜在风险。与一年生 相比，多年生 可以在 CW 中连续生长，用于养猪场废水的植物修复。新颖性声明在农业生态区，目前还没有关于这两种研究的大型植物的植物修复潜力的已知工作。该研究还深入了解了可食用部分的金属在 中的生物浓缩作用。FARO 44（SIPI 692033）。养猪场废水的特性表明，尽管采用了低耗水密集型方法，但废水的组成仍超过了再利用和回收的允许限值。该研究表明， 比 更能在地上组织中积累更多的金属，并为其在研究区域作为植物修复植物的使用提供了深入了解。 的污染物和金属足迹使其比 更适合于养猪场废水的植物修复。
