Phytoremediation as a way to clean technogenically polluted areas of Kazakhstan

Daurov, Dias; Zhambakin, Kabyl; Shamekova, Malika

doi:10.1590/1519-6984.271684

Cited by 4 publications

(2 citation statements)

References 105 publications

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“…One method of biological reclamation is phytoremediation. In this case, it is necessary to select plant species that have high phytoremediation activity and are able to grow in the recultivated soil [16].…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation Properties of Sweet Potato for Soils Contaminated by Heavy Metals in South Kazakhstan

Toishimanov,

Abilda,

Daurov

et al. 2023

Applied Sciences

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Industrial waste in the form of abandoned mine tailings from a former lead plant in South Kazakhstan amounts to about 2 million tons, and this has led to environmental pollution with heavy metals (HMs) in Shymkent city. The concentrations of Pb, Zn, and Cd in the mine tailings were 1354.50, 262.90, and 61.08 mg/kg, respectively. The contamination of the adjacent soils with Pb, Zn, and Cd ranged from 7.76 to 551.49, from 8.25 to 245.74, and from 5.40 to 19.23 mg/kg, respectively. In this study, the phytoremediation properties of sweet potato on soils contaminated with HMs adjacent to mine tailings were investigated. The phytoremediation efficiency of sweet potato was assessed in terms of its capacity to biotransfer and bioaccumulate HMs. The concentrations of Pb, Zn, and Cd in sweet potato in the experimental fields were 28.70–45.10, 70.0–94.20, and 1.19–1.80 mg/kg, respectively. It was determined that the pollution class of the studied soils according to Igeo was high pollution (5.28–8.80), and the potential risk of HM accumulation according to the ecological risk index proposed by Hakanson was moderate pollution.

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Section: Introductionmentioning

confidence: 99%

Phytoremediation Properties of Sweet Potato for Soils Contaminated by Heavy Metals in South Kazakhstan

Toishimanov,

Abilda,

Daurov

et al. 2023

Applied Sciences

Self Cite

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“…According to the data of Jia et al [9], distribution of HM in plants can vary with considerable heterogeneity, because minimum and maximal value of concentrations of gross forms of pollutants differ to 100 times in a range 1-40 mg/kg, connections of Cr -2-30 mg/kg, Cu -4-100 mg/kg, Ni -1-50 mg/kg, Pb -2-25 mg/kg; B -2-3000 mg/kg. Daurov et al [10] emphasize that phytoremediation, which uses the combined metabolic potential of microorganisms and plants, plays a special role in the release of the arable soil layer from HM. The use of biological methods for soil restoration and purification ensures both environmental safety and economic benefits [11].…”

Section: Introductionmentioning

confidence: 99%

Phytoaccumulation of Heavy Metals in South Kazakhstan Soils (Almaty and Turkestan Regions): An Evaluation of Plant-Based Remediation Potential

Naimanova,

Akhmetova,

Issayeva

et al. 2024

IJDNE

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Significant environmental concerns are raised by heavy metal pollution in soils, particularly in areas like South Kazakhstan where hazardous materials have accumulated as a result of human activities including mining, industry, and agriculture. This paper presents theoretical and experimental findings regarding the phytoremediation potential of sowing peas (Pisum sativum) in the grey soils of South Kazakhstan. Special attention is paid to the determination of gross concentrations of various forms of copper, nickel, and cobalt in the initial and remediated soils. The methodology basis for the study were chemical phase analysis, atomic absorption spectrometry, and X-ray electron microscopy to assess heavy metal levels in soils and plant samples. It was established that in the arid climate of Southern Kazakhstan, the upper layers of the soil up to 40 cm contain the highest concentration of heavy metal ions. The findings of the study will allow predicting the effectiveness of phytoremediation measures. The study suggests that sowing peas have potential for phytoremediation due to their ability to accumulate heavy metals in their root systems and biomass. It highlights the potential of phytoextraction techniques, which involve growing metal-accumulating plants in polluted soils and processing the harvested biomass to recover absorbed metals.

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Selection and characterization of lead-tolerant sweetpotato cultivars for phytoremediation

Daurov,

Lim,

Park

et al. 2024

Plant Biotechnol Rep

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Lead (Pb) is one of the most toxic heavy metals (HMs) for plants and the environment. Sweetpotato [Ipomoea batatas (L.) Lam], the sixth most important food crop in the world, is tolerant to various environmental stresses, owing to its high antioxidant capacity. In this study, we selected sweetpotato cultivars showing high tolerance to lead (Pb) for phytoremediation-related applications. Young seedlings of 20 sweetpotato cultivars were treated with 30 mM Pb. Daeyumi (KO-12) and Dahomi (KO-5) were selected as Pb-tolerant and -sensitive cultivars, respectively, based on their photosynthetic activity and growth inhibition index (I50). In the Pb treatment, hydrogen peroxide and malondialdehyde contents of KO-12 were 1.5-fold less than those of KO-5. In addition, KO-12 showed a higher ability to accumulate Pb in roots and leaves than KO-5. Expression levels of four Pb-responsive genes, including the metallothionein gene IbMT1, were higher in the roots and leaves of KO-12 than in those of KO-5. Interestingly, KO-12 showed greater tolerance to high Pb concentrations than sunflower and rapeseed, which have been well-studied for phytoremediation. Our results suggest that sweetpotato is a suitable biomaterial for the phytoremediation of soils contaminated with HMs, including lead, for sustainable agriculture.

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Phytoremediation as a way to clean technogenically polluted areas of Kazakhstan

Cited by 4 publications

References 105 publications

Phytoremediation Properties of Sweet Potato for Soils Contaminated by Heavy Metals in South Kazakhstan

Phytoremediation Properties of Sweet Potato for Soils Contaminated by Heavy Metals in South Kazakhstan

Phytoaccumulation of Heavy Metals in South Kazakhstan Soils (Almaty and Turkestan Regions): An Evaluation of Plant-Based Remediation Potential

Selection and characterization of lead-tolerant sweetpotato cultivars for phytoremediation

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