Combined effects of temperature and nutrients on the toxicity of cadmium in duckweed (Lemna aequinoctialis)

Yang, Jingjing; Li, Gaojie; Chen, Yimeng; Chen, Yan; Kumar, Sunjeet; Sun, Zuoliang; Li, Xiaozhe; Zhao, Xuyao; Hou, Hongwei

doi:10.1016/j.jhazmat.2022.128646

Cited by 12 publications

(9 citation statements)

References 52 publications

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“… 16 , 93 , 98 − 101 It is worth noting, however, that for some metals conflicting findings have been reported on metal toxicity limits, likely due to differences in tolerance between strains, as well as increasing tolerance from higher nitrogen and phosphorus concentrations. 36 Therefore, further work should be performed to establish clearer limits for the application of duckweed for metal removal. This should focus on whether duckweed can be used for high levels of metal contamination (i.e., several mg/L) or whether it should only be used for “polishing” applications with low metal concentrations.…”

Section: Resultsmentioning

confidence: 99%

“… 27 , 29 In addition to nutrient and BOD removal, there have been a large number of studies investigating metal removal from wastewater, looking at the resulting concentration of metals within duckweed (and less commonly at the removal rate from the liquid solution). 15 , 16 , 30 − 36 The advantage of phytoremediation for metal removal is due to the relatively high costs of conventional technologies (e.g. chemical precipitation, ion exchange, coagulation–flotation).…”

Section: Introductionmentioning

confidence: 99%

“…Typical removal rates within 10–20 days of retention are generally around 60–95% for nitrogen, ,,,− 75–95% for phosphorus, ,− and 70–95% for BOD, ,− although these may reduce in colder climates which are thus less suited to such systems Of course, it is critical for any such process to consider any land use changes and other environmental effects, which can vary significantly with geography . There is very little data on the performance of full-scale duckweed remediation systems. , In addition to nutrient and BOD removal, there have been a large number of studies investigating metal removal from wastewater, looking at the resulting concentration of metals within duckweed (and less commonly at the removal rate from the liquid solution). ,,− The advantage of phytoremediation for metal removal is due to the relatively high costs of conventional technologies (e.g. chemical precipitation, ion exchange, coagulation–flotation). , …”

Section: Introductionmentioning

confidence: 99%

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An Ionic Liquid-Based Biorefinery Approach for Duckweed Utilization

Firth,

Nakasu,

Fennell

et al. 2024

ACS Sustainable Resour. Manage.

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This study establishes a foundation for the ionic liquid (IL) pretreatment of duckweed biomass. An optimized ILbased process was designed to exploit the unique properties of duckweed including efficient metal removal, potential starch accumulation, and protein accumulation. Two ILs, namely, dimethylethanolammonium formate ([DMEtA][HCOO]) and N,N-dimethylbutylammonium hydrogen sulfate ([DMBA]-[HSO 4 ]), were investigated for the pretreatment of two duckweed species (Spirodela polyrhiza and Lemna minor). The evaluation focused on starch recovery, sugar release, protein recovery, and metal extraction capabilities. [DMEtA][HCOO] demonstrated near-quantitative starch recoveries at 120 °C, while [DMBA]-[HSO 4 ] showed similar performance at 90 °C within a reaction time of 2 h. Saccharification yields for most pulps exceeded 90% after 8 h of hydrolysis, outperforming "traditional" lignocellulosic biomasses such as miscanthus or sugarcane bagasse. Approximately 50 and 80 wt % of the protein were solubilized in [DMEtA][HCOO] and [DMBA][HSO 4 ], respectively, while the remaining protein distributed between the pulp and lignin. However, the solubilized protein in the IL could not be recovered due to its low molecular weight. Regarding metal extraction, [DMEtA][HCOO] demonstrated higher efficiency, achieving 81% removal of Ni from Lemna minor's pulps, whereas [DMBA][HSO 4 ] extracted only 28% of Ni with slightly higher pulp concentrations. These findings indicate the need for further optimization in concurrent metal extraction using ILs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Ionic Liquid-Based Biorefinery Approach for Duckweed Utilization

Firth,

Nakasu,

Fennell

et al. 2024

ACS Sustainable Resour. Manage.

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“…The CM extensively increased the soil AP and AK compared to PB, which could be the reason for its superior effect on plant growth than PB. Specifically, the extensively higher AP in CM contributed to the lower shoot Cd (Figure 4); higher phosphorus availability had been widely proven to benefit biomass accumulation and the dilution effect of systems under Cd stress [35][36][37].…”

Section: The Improvement Of Peach Branch Fertilizer and Cow Manure Fe...mentioning

confidence: 99%

Three Different Fertilizers Enhance Spinach Growth and Reduce Spinach Cd Concentration in Cd Contaminated Alkaline Soil

Pan

Lang

et al. 2023

Horticulturae

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In order to investigate the impact of peach branch derived fertilizer (PB), cow manure derived fertilizer (CM) and silicon liquid fertilizer (Si) on the growth and Cd uptake of the Spinacia oleracea L. in the Cd contaminated soil, a pot experiment was conducted. The fertilizers were applied with low (L), medium (M) or high (H) levels, leading to nine treatments and a control group (CK). As a result, compared to CK, PB increased shoot dry mass by 15 to 46% and reduced shoot Cd by 19 to 56%; CM increased shoot dry mass by 6.1 to 162% and reduced shoot Cd by 38 to 55%; Si showed no effect on plant biomass but significantly reduced the root Cd bioconcentration factor. The CMM and CMH significantly reduced soil-available Cd by 6.5 and 7.5%, respectively, compared to CK. The CM enhanced the plant biomass dilution of Cd and decreased soil-available Cd, but led to higher total shoot Cd accumulation. PB led to simultaneous decline of the shoot Cd and total shoot Cd accumulation, indicating a stronger plant Cd “rejection” effect, independent from biomass accumulation. Si reduced plant root Cd with the sacrifice of biomass accumulation.

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“…Nutrient exposure levels have influenced the dose–response growth curves for L. gibba exposed to triclosan [ 5 ], and Lemna minor exposed to copper [ 20 ]. Meanwhile, increasing nitrogen and phosphorus supplies have enhanced Lemna aequinoctialis tolerance to cadmium [ 21 ], as well as L. minor and Spirodela polyrhiza tolerance to lead [ 22 ]. Yu et al [ 23 ] also found that high nutrient levels could alleviate the impact of high-dose microplastic exposure to the aquatic carnivorous plant Utricularia vulgaris .…”

Section: Introductionmentioning

confidence: 99%

Physiological Response of Nutrient-Stressed Lemna gibba to Pulse Colloidal Silver Treatment

Varga

Pfeiffer

Begović

et al. 2023

Plants

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Wastewater is a source of many environmental pollutants and potentially high concentrations of essential plant nutrients. Site-specific nutrient levels may influence the response of exposed plants to a chemical stressor. In the present study, we focused on the responses of model aquatic macrophyte swollen duckweed (Lemna gibba L.) to a short pulse exposure and a commercially available colloidal silver product as a potential environmental chemical stressor, combined with two levels of total nitrogen and phosphorus nutrition. Treatment with the commercially available colloidal silver product caused oxidative stress in L. gibba plants under both high and low nutrient levels. Plants grown and treated under high nutrient levels showed lower levels of lipid peroxidation and hydrogen peroxide accumulation, as well as higher levels of photosynthetic pigment content in comparison to treated plants under low nutrient levels. Higher free radical scavenging activity for plants treated with silver in combination with high nutrient levels resulted in better overall protection from silver-induced oxidative stress. The results showed that external nutrient levels significantly affected the L. gibba plant’s response to the colloidal silver presence in the environment and that nutrient levels should be considered in the assessment of potential environmental impact for contaminants.

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Combined effects of temperature and nutrients on the toxicity of cadmium in duckweed (Lemna aequinoctialis)

Cited by 12 publications

References 52 publications

An Ionic Liquid-Based Biorefinery Approach for Duckweed Utilization

An Ionic Liquid-Based Biorefinery Approach for Duckweed Utilization

Three Different Fertilizers Enhance Spinach Growth and Reduce Spinach Cd Concentration in Cd Contaminated Alkaline Soil

Physiological Response of Nutrient-Stressed Lemna gibba to Pulse Colloidal Silver Treatment

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