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Book ChapterDOI

Nanomaterials for Soil Fertilisation and Contaminant Removal

01 Jan 2016-pp 229-246
TL;DR: A review of the application of nanomaterials to improve nutrient quality and to remove soil contaminants is presented in this article, where the authors have shown that using nanoparticles to enhance water retention and as nutrient carriers promoted seed germination, plant growth, phosphorus and nitrogen fixation.
Abstract: Expanding population and increasing consumption is inducing higher pressure on agricultural resources and food production. Agriculture depends to a large extent on the quality of soil and water resource availability. Soils should ensure water retention, provide sufficient nutrients and not contain any contaminants. However, anthropogenic and natural factors are responsible for the deterioration of soil quality in the form of erosion, loss of water retention capacity and nutrients, and contamination. Large scale use of agrochemicals in the form of fertilisers and pesticides has given rise to increase in the levels of contaminants in soil and ground water. Here we review the application of nanomaterials to improve nutrient quality and to remove soil contaminants. Nanomaterials such as nanoclays, nanozeolites and nanominerals have been used to enhance water retention and as nutrient carriers. These nanomaterials promoted seed germination, plant growth, phosphorus and nitrogen fixation, versus conventional methods. Nanoparticles have also been used for remediating soils contaminated by herbicides, pesticides, organic pollutants and heavy metals. Conventional soil remediation methods such as phytoremediation, thermal treatment and electrokinetic degradation, have been improved using nanoparticles.
Citations
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Journal ArticleDOI
TL;DR: The authors reviewed the role of engineered nanomaterials at the nexus of food, energy, and water, including some examples of their current applications and challenges specifically related with food production, and discussed their potential effects on the FEW nexus.

51 citations

Journal ArticleDOI
TL;DR: The results of the combined assay indicated that co-exposure to ZnO NPs and CPF increased adverse effects in E. andrei, and underpin the need to consider the effects of mixtures ofNPs and organic chemicals on soil to adequately make ecological risk assessments of NPs.

28 citations

Book ChapterDOI
01 Jan 2020
TL;DR: In this article, the behavior of agricultural crops in relation to nanomaterials under abiotic stress conditions imposed by changing environment is evaluated and the mode of action of this behavior also needs more elucidations under different agroecosystems.
Abstract: It has been predicted that the Earth’s temperature will accelerate in near future, and thereby the global agricultural production is bound to face several challenges under constantly changing environments. It is often reported that the adverse environmental conditions limit the crop productivity and, thus, threaten the food security. Currently, the use of nanomaterials (NMs) such as some metalloids and metal oxides of Ag, Cu, Si, Zn, B, F, and Mn, in addition to chitosan, carbon nanotubes, and fullerenol, has received much attention and has shown their application in different fields of agricultural sector. These applications include soil and water nanoremediation, crop nanonutrition, crop nanoprotection, mitigation of abiotic stresses, and achieving thereby agri-sustainability. In different crop species, NMs application reduced reactive oxygen species (ROS), malondialdehyde content, and chlorophyll degradation, and it accelerates antioxidative enzymes activities, photosynthetic parameters, expression of Rubisco, and chlorophyll-binding protein genes. Overall, NMs have shown improved crop growth and protection under adverse conditions. On the other hand, the fate and transformation of NMs in agroecosystems also make important issues as these materials under certain conditions may generate ROS and nitrogen and exhibit toxic effects. Further studies are, therefore, needed at cellular and molecular levels in order to determine the behavior of NMs in mitigating and/or inducing stress in important agricultural crops species. The mode of action of this behavior also needs more elucidations under different agroecosystems. This chapter is an attempt to evaluate the behavior of agricultural crops in relation to NMs under abiotic stress conditions imposed by changing environment.

18 citations

Journal ArticleDOI
TL;DR: Slow-release fertilizers based on nanomaterials have recently proven promise in increasing nitrogen use efficiency by plants and reduction in environmental hazards as mentioned in this paper, and they have been used in many applications.
Abstract: Slow-release fertilizers based on nanomaterials have recently proven promise in increasing nitrogen use efficiency by plants and reduction in environmental hazards. We have previously reported the ...

17 citations


Cites background from "Nanomaterials for Soil Fertilisatio..."

  • ...…based approaches is expected to resolve the issues of nutrient losses because of their nanoscale size and high surface to volume ratio (Gunaratne et al. 2016; DeRosa et al. 2010; Kottegoda et al. 2011; Dimkpa and Bindraban 2018; Pulimi and Subramanian 2016; Guo et al. 2018; de Silva et al. 2020)....

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Journal ArticleDOI
TL;DR: In this paper, the potential benefits of using silver nanoparticles and two biological treatments to control soft rot disease in sugar beet (Beta vulgaris L) were evaluated in both in vitro and in vivo experiments.
Abstract: Soft rot disease caused by Pectobacterium carotovorum was observed in various crops which lead to yield shortages and economic losses. Therefore, both in vitro and in vivo experiments, aim to assess the effect of nanoparticles and biological treatments to control soft rot disease in sugar beet plant. The treatments comprised three silver nanoparticles (Ag NPs) concentrations (50, 75, and 100 ppm), three Spirulina platensis extract concentrations (50, 75, and 100%), and Bacillus subtilis (1 × 109 CFU ml) 100%. Under in vitro condation, results of the antibacterial activity showed that the zones of inhibition recorded 4.33 cm for 100 ppm Ag NPs, 0.43 cm for 100% algal extract, and 0.2 cm for bacterial treatments. Also, disease incidence % of bacterial soft rot was significantly decreased in all treatments in pot and field experiments. For resistant enzymes activity, B. subtilis 100% showed the most effect (84 mg min−1), followed by S. platensis extract 75%, (57 mg min−1), and Ag NPs 75 ppm (44 mg min−1), for poly phenol oxidase (PPO) at 81 days after sowing (DAS), but at 102 DAS revealed opposite results. On the contrary, peroxidase (PO) at 81 DAS showed different effects where treatment with S. platensis extract 100% increased it significantly (0.546 mg min−1) compared to control (0.535 mg min−1). The same trend was observed at 102 DAS. These results were reflected on sugar quality where Ag NPs 100 ppm treatment recorded the highest significant value (20.5%) followed by S. platensis 75% (19 %); however, the differences among them were not statistically significant. This study indicated that the potential benefits of using silver nanoparticles and two biological treatments to control soft rot disease in sugar beet (Beta vulgaris L).

12 citations

References
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Journal ArticleDOI
TL;DR: Preliminary studies show the potential of nanomaterials in improving seed germination and growth, plant protection, pathogen detection, and pesticide/herbicide residue detection.

944 citations

Journal ArticleDOI
TL;DR: Cubic monodisperse MFe2O4 ferrite nanoparticles with tunable sizes between 7 and 20nm and a narrow size distribution have been achieved in a one step synthesis by thermal decomposition of Fe(III), Co (II), and Mn(II) oleates.
Abstract: Cubic monodisperse MFe2O4 ferrite nanoparticles (M = Fe, Co, and Mn) with tunable sizes between 7 and 20 nm and a narrow size distribution have been achieved in a one step synthesis by thermal decomposition of Fe(III), Co (II), and Mn(II) oleates. These nanoparticles have been functionalized with dimercaptosuccinic acid (DMSA), 11-mercaptoundecanoic acid (MUA), and bis(carboxymethyl)(2-maleimidylethyl)ammonium 4-toluenesulfonate (MATS) to grant them aqueous stability and the possibility for further functionalization with different biomolecules. Their structural, magnetic, and colloidal properties have also been studied to determine their chemical and physical properties and the degree of stability under physiological conditions that will determine their future use in biomedical applications.

559 citations

Journal ArticleDOI
TL;DR: A detailed overview of the application of nanotechnology in the field of agriculture, and food science & technology can be found in this article, where some exciting thoughts are also discussed on nanotechnological applications in agricultural practices including nano-agri for enhanced productivity, agricultural water quality management, product processing, storage and quality control with nano-sensors.

304 citations

Journal ArticleDOI
TL;DR: The needs regarding removal, disposal, and treatment of antiviral drugs are addressed and the potential human, animal, and ecological risks associated with the discharge of these antiviral compounds to the environment are not well documented.
Abstract: Antiviral drugs have been recently recognized as one of the emerging contaminants in the environment. These are discharged after therapeutic use through human excretion. Effluent containing high concentration of antiviral drugs discharged from production facilities is also a cause of concern to nearby aquatic bodies. There is an increased interest in their removal because they are highly bioactive. Some antiviral drugs are resistant to conventional methods of degradation, and there is a risk of development of antiviral resistance in humans and animals if exposed repeatedly for long periods. To date, the potential human, animal, and ecological risks associated with the discharge of these antiviral compounds to the environment are not well documented. This study presents a brief summary on occurrence, ecotoxicological risks, and physicochemical properties of antiviral drugs in the environment. The needs regarding removal, disposal, and treatment of antiviral drugs are also addressed.

300 citations

Journal ArticleDOI
TL;DR: In the present study ion exchange of Pb2+, Cu2+, Fe3+ and Cr3+ on natural clinoptilolite is examined at 27 +/- 1 degree C and initial concentration of 10 meq/dm3, confirming the selectivity order deduced from the equilibrium isotherms.

300 citations