Investigation and Selection of Indigenous Plants for Potential Treatment of Soil Contaminated with Chromiumin Long Khanh City, Dong Nai Province

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Issue: Vol. 19 No. 1 (2021)

Section:

TÀI NGUYÊN VÀ MÔI TRƯỜNG

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Hung, N., & Tra, M. (2024). Investigation and Selection of Indigenous Plants for Potential Treatment of Soil Contaminated with Chromiumin Long Khanh City, Dong Nai Province. Vietnam Journal of Agricultural Sciences, 19(1), 110–118. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/776

Investigation and Selection of Indigenous Plants for Potential Treatment of Soil Contaminated with Chromiumin Long Khanh City, Dong Nai Province

Nguyen Thanh Hung (*) 1, 2 , Mai Huong Tra 3

  • 1 Trường Đại học Đồng Nai
  • 2 Khoa Tài nguyên và Môi trường, Đại học Thủ Dầu Một, Bình Dương
  • 3 Trường Đại học Lạc Hồng

    • Keywords

    Solanum nigrumL., phytoremediation, heavy metal, chromium, native plants, Cr polluted soil

    Abstract


    The purpose of this studywas to focuson screening native plants capable of absorbing heavy metal chromium (Cr)to treat contaminated soil. By field investigation method combined with a greenhouse experiment to determine growth capacity, critical points, TF and BF coefficient, 48 plant species with their outer morphology specific to heavy metal hyper-accumulator were collected. After examining scientific names, making a checklist of plant species, the results showed that there were 16 orders, 21 families, 37 genera capable of accumulating heavy metals. Among them, 4 plant speciesweresurvived in Cr contaminated soil from 150- 350mg/kg dried soil concluding: (1) Cyperus rotundusL., (2) Cynodon dactylon(L) Pers., (3) Amaranthus spinosusL., (4) Solanum nigrumL. in which Solanum nigrumL. is dominant in terms of both biomass andthe transportas well asbioaccumulation coefficient. Under normal farming conditions and soil contaminated with Cr concentration of 150- 350 mg/kg, Solanum nigrumL.hasgrownwell and attainedthe highest Cr treatment efficiency in contaminated soil from 150- 250 mg/kg dried soil.

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