Phytoremediation of cadmium (Cd) and uranium (U) contaminated soils by Brassica juncea L. enhanced with exogenous application of plant growth regulators

Chen, Li; Long, Chan; Wang, Dan; Yang, Jin‐yan

doi:10.1016/j.chemosphere.2019.125112

Cited by 148 publications

(46 citation statements)

References 64 publications

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“…Subsequently, each plastic pot with a hole at the bottom was filled with 3.0 kg of grounded soil. Uranium (15 mg·kg −1 ) and Cd (15 mg·kg −1 ) were spiked into the air-dried soils by uniformly spraying an aqueous solution of UO 2 (CH 3 CO 2 ) 2 ·2H 2 O and CdCl 2 ·2.5H 2 O onto the soil, and base fertilizer was applied in a single dose that contained (NH 4 ) 2 SO 4 , KH 2 PO 4 , and K 2 SO 4 powders (nitrogen content: 225 mg·kg −1 , phosphorus content: 65 mg·kg −1 , and potassium content: 227 mg·kg −1 ) 5 . Soil ageing was conducted in the pots containing the artificially contaminated soil in the greenhouse for another 35 days.…”

Section: Methodsmentioning

confidence: 99%

“…The U and Cd concentrations of dried plant samples (shoots and roots) were measured by Chen et al . 5 Concentrations of U and Cd in plant samples were determined using an inductively coupled plasma mass spectrometry (ICP-MS) (Agilent 7700x; PerkinElmer, Waltham, Massachusetts, USA).…”

Section: Methodsmentioning

confidence: 99%

“…According to a survey, the average content of U in topsoil (0–20 cm) was 3.03 mg/kg in China 3 ; however, the U content in the contaminated soil around U tailings is 3.21–62.37 mg·kg −1 in Hunan Province, China 4 . Multiple heavy metals (U, Cd, Cr, Fe, Pb, and Cu) have been found in U tailings area 5 . Meanwhile, Cd has become one of the most severe concerns in U tailings area due to its high mobility and toxicity in the soil environment 6 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of biodegradable chelators on induced phytoextraction of uranium- and cadmium- contaminated soil by Zebrina pendula Schnizl

Chen

Wang

Long

et al. 2019

Sci Rep

Self Cite

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This study investigated the effect of ethylenediamine-N,N′-disuccinic acid (EDDS), oxalic acid (OA), and citric acid (CA) on phytoextraction of U- and Cd-contaminated soil by Z. pendula. In this study, the biomass of tested plant inhibited significantly following treatment with the high concentration (7.5 mmol·kg−1) EDDS treatment. Maximum U and Cd concentration in the single plant was observed with the 5 mmol·kg−1 CA and 7.5 mmol·kg−1 EDDS treatment, respectively, whereas OA treatments had the lowest U and Cd uptake. The translocation factors of U and Cd reached the maximum in the 5 mmol·kg−1 EDDS. The maximum bioaccumulation of U and Cd in the single plants was 1032.14 µg and 816.87 µg following treatment with 5 mmol·kg−1 CA treatment, which was 6.60- and 1.72-fold of the control groups, respectively. Furthermore, the resultant rank order for available U and Cd content in the soil was CA > EDDS > OA (U) and EDDS > CA > OA (Cd). These results suggested that CA could greater improve the capacity of phytoextraction using Z. pendula in U- and Cd- contaminated soils.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of biodegradable chelators on induced phytoextraction of uranium- and cadmium- contaminated soil by Zebrina pendula Schnizl

Chen

Wang

Long

et al. 2019

Sci Rep

Self Cite

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“…Another view states that this driving effect is ambiguous, which can promote economic aggregate significantly in the short term but has less effect on economic growth [9]. This is mainly due to the fact that the impact of high-speed rail on regional economic growth hinges on factors such as network layout, construction cost, and environmental cost [10][11][12][13].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Various resource elements become concentrated in cities with high-speed rail, enhancing their concentration capacity and resulting in both agglomeration effect and polarization phenomenon. These advantages and effects further stimulate economic activities in cities along the high-speed rail route [13]. Figure 1 shows the contrast of economic growth of cities with high-speed rail (i.e., cities that have opened a high-speed rail in 2014) and those without high-speed rail.…”

Section: High-speed Rail Opening and Economic Growthmentioning

confidence: 99%

The Impact of High-Speed Rail Opening on City Economics along the Silk Road Economic Belt

Sung-Bum

Xie

et al. 2020

Sustainability

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Achieving transport connectivity is a priority in China's "Belt and Road Initiative". In order to further understand the impact of railway infrastructure on city-level economic expansion, we set cities with high-speed rail as the treatment group and those without high-speed rail as the control group, and a difference-in-differences (DID) technique was used to estimate the growth impact and heterogeneity of high-speed rail opening on the economic growth of cities along the New Silk Road Economic Belt. The main results are as follows: First, economic growth in cities with operational high-speed rail lines was significantly higher than those without high-speed rail. Second, the impact of high-speed rail on economic growth exhibited distinct heterogeneity. Large cities tend to have a stronger siphoning effect, resulting in more pronounced impact of high-speed rail opening on urban economic growth. Third, cities with higher marketization levels and higher government efficiency were shown to have stronger economic growth effect.

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Phytoremediation for Heavy Metal Removal

Yadav

Singh

Jadeja

2021

Pollutants and Water Management

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Phytoremediation of cadmium (Cd) and uranium (U) contaminated soils by Brassica juncea L. enhanced with exogenous application of plant growth regulators

Cited by 148 publications

References 64 publications

Effect of biodegradable chelators on induced phytoextraction of uranium- and cadmium- contaminated soil by Zebrina pendula Schnizl

Effect of biodegradable chelators on induced phytoextraction of uranium- and cadmium- contaminated soil by Zebrina pendula Schnizl

The Impact of High-Speed Rail Opening on City Economics along the Silk Road Economic Belt

Phytoremediation for Heavy Metal Removal

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