Effect of Humus on the Solidification and Stabilization of Heavy Metal Contaminated River Sediment

Gao, Huimin; Hong, Tao; Yang, Yang; Che, Qingyang; Tang, Qi; Gu, Yu

doi:10.3390/ijerph20064882

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…It mediated the SOM mineralization kinetics and free the plant nutrient from complex molecule to inorganic ions [ 48 ]. Secretion of low molecular organic acids during decomposition, modify the humus metal complex and reduced the lead toxicity in soil [ 49 ]. Pressmud is a rich source of plant nutrients because it has a good impact on the physical, chemical, and biological characteristics of soil [ 50 ].…”

Section: Discussionmentioning

confidence: 99%

Management of acid and alkaline phosphatase, dehydrogenase activities by sugarcane industry waste under lead contamination- A case study of Indian Vertisol

Dotaniya

Nagar²,

Sharma³

et al. 2023

PLoS ONE

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Soil fertility management and crop productivity both are inter-related need extensive attention for sustainability. Industries are being built, which over time produces a lot of effluents containing heavy metal(s), which is then dumped on healthy soils and water bodies. Long-term discharge of lead (Pb)-containing wastewater resulted in significant Pb buildup as well as a decrease in soil biological activity. In this experiment, graded dose of Pb, i.e. 0, 100, 150 and 300 mg/kg and pressmud (PM) (0, 2.5, 5, 10 g/kg) were applied to monitor the Pb toxic effect on soil acid and alkaline phosphatase, dehydrogenase activity. Different treatment combinations were formulated and the experiment was conducted in a completely randomized design (CRD) with three replications. In this experiment, spinach crop was used as a test crop. According to the findings, increased Pb levels in the soil lowered dehydrogenase activity (DHA), acid and alkaline phosphatase. The addition of PM enhanced enzymatic activities by decreasing the labile fraction of Pb in the soil. Incorporation of PM improved the soil enzymatic activities as alkaline phosphatase activity > DHA > acid phosphatase activity in the study. This study suggested that the addition of 10 g/kg PM reduced Pb toxicity (contamination level 300 mg/kg) and improved the soil microbial properties in black soil. These findings are very useful for the remediation of Pb contaminated soil with the help of PM, particularly in peri-urban Pb effluent irrigated areas.

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Section: Discussionmentioning

confidence: 99%

Management of acid and alkaline phosphatase, dehydrogenase activities by sugarcane industry waste under lead contamination- A case study of Indian Vertisol

Dotaniya

Nagar²,

Sharma³

et al. 2023

PLoS ONE

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“…Experimental data indicate that phenolic and carboxylic groups of DOM are the main sites that cationic elements are sorbed [13]. Fulvic acids addition to soils was found to result in increased PTE availability, contrary to humic acids that significantly reduced it [34]. Moreover, calcium concentration in soil can promote DOM coagulation, reducing DOM solubility, leading to limited potential to bind cationic elements [35].…”

Section: Organic Colloidal Surfacesmentioning

confidence: 99%

Potentially Toxic Elements: A Review on Their Soil Behavior and Plant Attenuation Mechanisms against Their Toxicity

Thalassinos,

Petropoulos,

Grammenou

et al. 2023

Agriculture

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The presence of potentially toxic elements (PTEs) can induce phytotoxicity and growth inhibition in plants. These elements are bioaccumulated and biomagnified in the food chain due to their high stability and resistance to biodegradation. The availability and mobility of PTEs in soil depend on certain physicochemical procedures. Many scientific studies on PTEs have provided valuable information about the processes, environmental fate, effects and remediation techniques. However, there is a need for gathering and presenting all up-to-the-date information concerning mechanisms and processes of PTE mobility in the soil-plant interface. More specifically, soil chemical reactions and processes need to be discussed under the light of PTE potential uptake by plants, as well as the physiological mechanisms at plant molecular level of PTE attenuation when plants are subjected to PTE stress. Thus, in this study we discuss the important soil processes that influence the bioavailability of PTEs for plant uptake. We also elucidate the mechanisms such as phytochelation and antioxidant defense through which plants can mitigate PTE toxicity, enhance their tolerance, and promote their survival in contaminated soils. Moreover, we discuss the major mechanisms of reactive oxygen species (ROS) production and the strategies for ROS scavenging which involve enzymes and non-enzymatic compounds that demonstrate antioxidant effects. In conclusion, this review provides a comprehensive understanding regarding PTE toxicity, utilization and transportability. It could be used by the scientific community and soil end-users towards a better understanding of the mechanisms that plants use to alleviate PTE toxicity, significantly affecting the potential use of plants in soil remediation programs and their capacity to grow in PTE-contaminated soils.

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“…In this regard, it is very important to study FA, which has antioxidant activity, as a potential protector of oxidative stress. FA as a polyphenolic compound is capable of being a chelator of metal ions of variable valence [23][24][25][26], acting as a scavenger for ROS, and being a reducer of oxidized forms of other antioxidants.…”

Section: Introductionmentioning

confidence: 99%

Anti-Inflammatory Property Establishment of Fulvic Acid Transdermal Patch in Animal Model

Konnova,

Volkov,

Solovyeva

et al. 2023

Sci. Pharm.

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The formulation of the transdermal patch with fulvic acid (FA) on an emulsion basis using pluronic Kolliphor® p237 as a permeability enhancer was developed and studied for anti-inflammatory properties. FA was isolated from the peat in the Nizhny Novgorod region of Russia and characterized as a potential active pharmaceutical ingredient. In vitro studies of the release of FA from the transdermal patch, as well as the FA penetration through the acetyl cellulose membrane using the Franz diffusion cell, showed its high efficiency (56% and 90%, respectively, in 8 h). In the in vivo experiment, qualitative and quantitative features of the rat knee caused by complete Freund’s adjuvant-induced arthritis (morphological changes, the FA influence on the biochemical indexes) were studied. The inflammatory process that developed within 15 days was accompanied by the activation of antioxidant oxidoreductase enzymes (by 50–70%), the increase in the cross-sectional diameter of the cartilage, and the increase in the values of marker indicators of the process of rheumatoid arthritis. Within 7 days of treatment, under the influence of FA, the values of ESR, RF, leukocytes, C-reactive protein, as well as the biochemical parameters characterizing oxidative stress (SOD, catalase, glutathione reductase, LDH, G6PD) normalized, and the edema reduced. These results may be useful for arthritis treatment using the transdermal patch with FA.

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Effect of Humus on the Solidification and Stabilization of Heavy Metal Contaminated River Sediment

Cited by 6 publications

References 16 publications

Management of acid and alkaline phosphatase, dehydrogenase activities by sugarcane industry waste under lead contamination- A case study of Indian Vertisol

Management of acid and alkaline phosphatase, dehydrogenase activities by sugarcane industry waste under lead contamination- A case study of Indian Vertisol

Potentially Toxic Elements: A Review on Their Soil Behavior and Plant Attenuation Mechanisms against Their Toxicity

Anti-Inflammatory Property Establishment of Fulvic Acid Transdermal Patch in Animal Model

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