Simultaneous control of soil erosion and arsenic leaching at disturbed land using polyacrylamide modified magnetite nanoparticles

Zheng, Min; Huang, Zhen; Ji, Haodong; Qiu, Fuguo; Zhao, Dongye; Bredar, Alexandria R. C.; Farnum, Byron H.

doi:10.1016/j.scitotenv.2019.134997

Cited by 24 publications

(9 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surface functionalized Fe 3 O 4 nanomaterials are progressively being utilized in several environmental applications, raising concerns on their fate and ecological impacts [190]. Despite of their benefits [191,192], there are several concerns about the possible risks of iron oxide nanomaterials [193][194][195].…”

Section: Iron Oxide Nanomaterialsmentioning

confidence: 99%

Recent Developments in the Application of Nanomaterials in Agroecosystems

Saleem

Zaidi

2020

Nanomaterials

View full text Add to dashboard Cite

Nanotechnology implies the scientific research, development, and manufacture, along with processing, of materials and structures on a nano scale. Presently, the contamination of metalloids and metals in the soil has gained substantial attention. The consolidation of nanomaterials and plants in ecological management has received considerable research attention because certain nanomaterials could enhance plant seed germination and entire plant growth. Conversely, when the nanomaterial concentration is not properly controlled, toxicity will definitely develop. This paper discusses the role of nanomaterials as: (1) nano-pesticides (for improving the plant resistance against the biotic stress); and (2) nano-fertilizers (for promoting the plant growth by providing vital nutrients). This review analyzes the potential usages of nanomaterials in agroecosystem. In addition, the adverse effects of nanomaterials on soil organisms are discussed. We mostly examine the beneficial effects of nanomaterials such as nano-zerovalent iron, iron oxide, titanium dioxide, nano-hydroxyapatite, carbon nanotubes, and silver- and copper-based nanomaterials. Some nanomaterials can affect the growth, survival, and reproduction of soil organisms. A change from testing/using nanomaterials in plants for developing nanomaterials depending on agricultural requirements would be an important phase in the utilization of nanomaterials in sustainable agriculture. Conversely, the transport as well as ecological toxicity of nanomaterials should be seriously examined for guaranteeing its benign usage in agriculture.

show abstract

Section: Iron Oxide Nanomaterialsmentioning

confidence: 99%

Recent Developments in the Application of Nanomaterials in Agroecosystems

Saleem

Zaidi

2020

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Soil erosion induced by human activities, such as agriculture, could be minimized if correct monitoring and assessment were carried out to develop efficient preventive measures. Natural erosion also depends on uncontrollable factors, but it is not necessary to prevent or mitigate this form of erosion 22,23 . Therefore, understanding the nature of erosion induced by human activities is key to conserving ecosystem services 24,25 .…”

mentioning

confidence: 99%

Prediction of factors affecting activation of soil erosion by mathematical modeling at pedon scale under laboratory conditions

Shojaei

Kalantari

Rodrigo‐Comino

2020

Sci Rep

View full text Add to dashboard Cite

Soil degradation due to erosion is a significant worldwide problem at different spatial (from pedon to watershed) and temporal scales. All stages and factors in the erosion process must be detected and evaluated to reduce this environmental issue and protect existing fertile soils and natural ecosystems. Laboratory studies using rainfall simulators allow single factors and interactive effects to be investigated under controlled conditions during extreme rainfall events. In this study, three main factors (rainfall intensity, inclination, and rainfall duration) were assessed to obtain empirical data for modeling water erosion during single rainfall events. Each factor was divided into three levels (− 1, 0, + 1), which were applied in different combinations using a rainfall simulator on beds (6 × 1 m) filled with soil from a study plot located in the arid Sistan region, Iran. The rainfall duration levels tested were 3, 5, and 7 min, the rainfall intensity levels were 30, 60, and 90 mm/h, and the inclination levels were 5, 15, and 25%. The results showed that the highest rainfall intensity tested (90 mm/h) for the longest duration (7 min) caused the highest runoff (62 mm3/s) and soil loss (1580 g/m2/h). Based on the empirical results, a quadratic function was the best mathematical model (R2 = 0.90) for predicting runoff (Q) and soil loss. Single-factor analysis revealed that rainfall intensity was more influential for runoff production than changes in time and inclination, while rainfall duration was the most influential single factor for soil loss. Modeling and three-dimensional depictions of the data revealed that sediment production was high and runoff production lower at the beginning of the experiment, but this trend was reversed over time as the soil became saturated. These results indicate that avoiding the initial stage of erosion is critical, so all soil protection measures should be taken to reduce the impact at this stage. The final stages of erosion appeared too complicated to be modeled, because different factors showed differing effects on erosion.

show abstract

“…As a soil amendment, PAM can immobilize heavy metals through coulombic and van der Waals forces (Zheng et al, 2020). In this study, the heavy metal contents in the soil in PG1, PG2, and PG3, which contained PAM, were higher than those in G4 and B5, which did not contain PAM, while the Cu and V concentrations were lower in the flow in PG1, PG2, and PG3.…”

Section: Discussionmentioning

confidence: 99%

“…These results indicated that PAM could reduce the mobility of heavy metals, but the PAM application rate must be optimized to the site conditions. The simulated rainfall experimental results ofZheng et al (2020) showed that polyacrylamide-dispersed magnetite (PAM-MAG) decreased the soil mass loss in runoff by 90.8% and immobilized 82.5% of water-leachable arsenate. In addition, research on PAM application in toxic multimetal systems is limited, and the mechanism by which PAM influences heavy metal migration is not T A B L E 4 Correlation coefficients among the hydraulic properties, soil sediment concentration, and heavy metal concentrations , the application of PAM to reduce soil heavy metal migration requires further exploration.…”

mentioning

confidence: 99%

Simulation of the impacts of native vegetation and polyacrylamide on hydraulic properties and heavy metal concentrations at mine dumps

Zhou

et al. 2021

Land Degrad Dev

View full text Add to dashboard Cite

The ecological restoration of mine dumps is challenging because of the loose soil structure, toxic heavy metal, and severe soil erosion at such sites. The impacts of native grass and polyacrylamide (PAM) on the soil sediment concentration, hydraulic properties, and heavy metals at mine dumps were investigated via scouring tests with a flow discharge of 90 L min −1 . In the initial stages of the tests, fluctuating decreasing trends in the soil sediment concentration, flow velocity, and flow Ni concentration were observed, while a fluctuating increasing trend was observed in the flow resistance f. After a period of adjustment, the steady-state soil sediment concentrations, hydraulic properties, and Ni concentrations in the flow were attained. An increasingdecreasing trend for the V concentration and a decreasing-increasing trend for the Cu concentration in the flow were observed over time. In addition, Zn was not dissolved or transported by the overland flow. A significant correlation between the heavy metal concentration in the flow and soil sediment concentration was observed (p ≤ 0.01). Both native grass and PAM could effectively control soil loss and change hydraulic properties by increasing the surface roughness. The steady-state flow velocity of B5 was 1.11-1.36 times higher than in the other treatments, while the steady-state resistance f of B5 was 12.54-45.02% lower than in the other treatments. However, the native grass and PAM had different effects on the transport of heavy metals. The native grass could effectively reduce the mobility of V, while the PAM could reduce the mobility of Cu and V.

show abstract

Simultaneous control of soil erosion and arsenic leaching at disturbed land using polyacrylamide modified magnetite nanoparticles

Cited by 24 publications

References 44 publications

Recent Developments in the Application of Nanomaterials in Agroecosystems

Recent Developments in the Application of Nanomaterials in Agroecosystems

Prediction of factors affecting activation of soil erosion by mathematical modeling at pedon scale under laboratory conditions

Simulation of the impacts of native vegetation and polyacrylamide on hydraulic properties and heavy metal concentrations at mine dumps

Contact Info

Product

Resources

About