Cadmium Uptake by Lignocellulosic Materials: Effect of Lignin Content

Basso, María Cecilia; Cerrella, E. G.; Cukierman, Ana Lea

doi:10.1081/ss-120028577

Cited by 33 publications

(4 citation statements)

References 21 publications

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“…Adsorption capacities for Cd 2+ ions on lignin-based sorbents show promising improvements: from 6.7-7.5 mg g -1 on lignin from beech and poplar wood modified by alkaline glycerol delignification [71], reaching 48.3 mg g -1 (pure lignin) [72] and up to 175.4 mg g -1…”

Section: Overview Of Adsorption Capacities Of Lignin and Lignin-based...mentioning

confidence: 99%

Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal

Popović

Rušmirović

Veličković³

et al. 2020

International Journal of Biological Macromolecules

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Section: Overview Of Adsorption Capacities Of Lignin and Lignin-based...mentioning

confidence: 99%

Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal

Popović

Rušmirović

Veličković³

et al. 2020

International Journal of Biological Macromolecules

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“…The Cd adsorption capacity of the plant lignocellulosic reaches 40 mg/g, the lignin content of different varieties of lignocellulosic is different, and the Cd adsorption capacity is also different. The lignin content is proportional to the Cd adsorption capacity (Basso et al, 2004). The adsorption and deposition of heavy metals by lignin in the plant cell wall can reduce the transport of heavy metals to the cytoplasm, which is a detoxi cation mechanism for plants to heavy metal toxicity.…”

Section: Discussionmentioning

confidence: 99%

miR397-LACs mediated cadmium stress tolerance in Arabidopsis thaliana

et al. 2023

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Cadmium (Cd) is a non-essential heavy metal, assimilated in plant tissue with other nutrients, disturbing the ions' homeostasis in plants. The plant develops different mechanisms to tolerate the hazardous environmental effects of Cd. Recently studies found different miRNAs that are involved in Cd stress. In the current study, miR397 mutant lines were constructed to explore the molecular mechanisms of miR397 underlying Cd tolerance. Compared with the genetically modi ed line of overexpressed miR397 (arti cial miR397, amiR397), the lines of downregulated miR397 (Short Tandem Target Mimic miR397, STTM miR397) showed more substantial Cd tolerance with higher chlorophyll a & b, carotenoid and lignin content than amiR397. ICP-OES revealed higher cell wall Cd and low total Cd levels in STTM miR397 than in the wild-type and amiR397 plants. Further, the STTM plants produced fewer reactive oxygen species (ROS) and lower activity of antioxidants enzymes (e.g., catalase [CAT], malondialdehyde [MDA]) compared with amiR397 and wild-type plants after stress, indicating that silencing the expression of miR397 can reduce oxidative damage. In addition, the different family transporters' gene expression was much higher in the amiR397 plants than in the wild type and STTM miRNA397. Our results suggest that miR397 plays a role in Cd tolerance in Arabidopsis thaliana. Overexpression of miR397 could decrease Cd tolerance in plants by regulating the expression of LAC 2/4/17, changing the lignin content, which may play an important role in inducing different stress-tolerant mechanisms and protecting the cell from a hazardous condition. This study provides a basis to elucidate the functions of miR397 and the Cd stress tolerance mechanism in Arabidopsis thaliana.

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“…It has been reported that lignin is the main component responsible for adsorption by wood and that lignocellulose materials with a larger lignin content have a greater ability to uptake cadmium [20].…”

Section: Lignin Cellulose and Hemicellulose Analysesmentioning

confidence: 99%

Zinc sorption onto different particle sizes of compost from aqueous solution

Al‐Mashaqbeh

McLaughlan

2015

Desalination and Water Treatment

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A B S T R A C TThe zinc adsorption capacity and kinetics of different compost particle sizes were investigated using batch and column experiments. The results indicated that the particle size influenced the sorption process. The surface area per unit weight of the sorbent increased as the particle size decreased. The adsorption equilibrium data fitted very well both the Langmuir and Freundlich isotherms. The estimated sorption capacities of different compost particle size in the column experiment were 22.9 mg/g (0.60 mm), 17.3 mg/g (1.18 mm) and 12.7 mg/g (4.75 mm) compared with Langumir isotherm predictions of 26.6 mg/g (0.60 mm), 18.7 mg/g (1.18 mm) and 15.6 mg/g (4.75 mm). It is evident that compost has a high affinity for zinc which reflects the physicochemical properties of the compost particles. These properties indicate that weak physical sorption and strong chemical sorption is likely to occur between zinc and the compost particles.

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Cadmium Uptake by Lignocellulosic Materials: Effect of Lignin Content

Cited by 33 publications

References 21 publications

Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal

Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal

miR397-LACs mediated cadmium stress tolerance in Arabidopsis thaliana

Zinc sorption onto different particle sizes of compost from aqueous solution

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