Assessment of selected tree species as phytoremediation agents in polluted soils.

IF 3.4 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Phytoremediation Pub Date : 2024-09-26 DOI:10.1080/15226514.2024.2404169

B L Olajiire-Ajayi, O O Akintola, E Thomas

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Abstract

The study investigates the ability of selected tree species to absorb heavy metals (Pb, Ni, Zn) from polluted soils. Seedlings of Adansonia digitata (P₁), Jatropha curcas (P₂), and Hildegardia barteri (P₃) were transplanted into polythene pots with soils from a dumpsite (T₁), highway (T₂), industrial area (T₃), and farmland (T₄), forming a 3x4 factorial experiment replicated five times in a Completely Randomized Block Design. Pre-sowing analysis showed T₁ and T₂ had the highest Pb and Zn concentrations, T₃ had the highest Ni, and T₄ had the lowest heavy metal concentrations. After 12 weeks, heavy metal concentrations decreased in all soils. P₁ concentrated metals in the root, P₂ in the shoot, and P₃ in various plant parts, with significant differences between species. P₂ was identified as an effective phytoextractor for Pb and Zn (TF > 1), and P₃ for Ni. All species showed potential for phytostabilization. The study concludes that these species are viable options for phytoremediation of heavy metals in contaminated soils.

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评估选定树种在污染土壤中的植物修复作用。

本研究调查了选定树种吸收污染土壤中重金属（铅、镍、锌）的能力。将 Adansonia digitata（P1）、Jatropha curcas（P2）和 Hildegardia barteri（P3）的幼苗移植到聚乙烯盆中，盆中的土壤分别来自垃圾场（T1）、高速公路（T2）、工业区（T3）和农田（T4）。播种前分析表明，T1 和 T2 的铅和锌浓度最高，T3 的镍浓度最高，T4 的重金属浓度最低。12 周后，所有土壤中的重金属浓度都有所下降。P1 将金属集中在根部，P2 将金属集中在芽部，P3 将金属集中在植物的各个部位，不同物种之间存在显著差异。P2 被确定为铅和锌的有效植物萃取剂（TF > 1），P3 被确定为镍的有效植物萃取剂。所有物种都显示出植物稳定的潜力。研究得出结论，这些物种是对受污染土壤中的重金属进行植物修复的可行选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Phytoremediation 环境科学-环境科学

CiteScore

7.60

自引率

5.40%

发文量

145

审稿时长

3.4 months

期刊介绍： The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.