Synthesis and characterization of nano bentonite and its effect on some properties of sandy soils

El-Nagar, Doaa Ahmed; Sary, Dalal H.

doi:10.1016/j.still.2020.104872

Cited by 23 publications

(20 citation statements)

References 11 publications

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“…Nano-bentonite improved some physical properties of soil, water soil properties (available water and water holding capacity), and availability of macronutrients, which can enhance the reactive action of many nutrients in the soil and improve crop production (Doaa & Dalal, 2021). Note: each value is the mean of 3 replicates ±SD.…”

Section: Discussionmentioning

confidence: 99%

Remediation of heavy metals in contaminated soil by using nano‐bentonite, nano‐hydroxyapatite, and nano‐composite

El-Nagar

Abdel-Halim

2021

Land Degrad Dev

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Soil and water contaminants have an impact on ecosystems, agricultural productivity, groundwater, and human health. Therefore, it is necessary to develop new technologies to treat pollution, one of these techniques is the use of nanomaterials (NMs).This study aimed to evaluate the efficiency of bentonite nano-sheet structure (n-Be), hydroxyapatite nanoparticles (HapNP), and their nano-composite (n-Be/HapNC) on immobilizing nickel (Ni), copper (Cu), and lead (Pb) in peanut-cultivated soil. The prepared materials were characterized by X-ray powder diffraction, atomic force microscopy, surface area, and Fourier transform infrared. Eight levels of material were used T1 (bentonite, 1 t ha À1 ), T2 (hydroxyapatite, 1 t ha À1 ), T3 (HapNPs, 50 kg ha À1 ), T4 (HapNPs, 100 kg ha À1 ), T5 (n-Be, 50 kg ha À1 ), T6 (n-Be, 100 kg ha À1 ), T7 (n-Be/ HapNC, 50 kg ha À1 ), and T8 (n-Be/HapNC, 100 kg ha À1 ). The results indicated that the available Ni, Cu, and Pb showed a significant decline in the treated soil, in comparison to untreated. Levels of Ni exhibited a decrease in the following order: T8 < T6 < T7 < T5. Similar patterns were observed for Cu and Pb levels, where treatment T8 exhibited the greatest decline compared to the control. Uptake of heavy metals (HM) by peanut components (leaves, stems, and seeds) showed significant declines for the treatments, compared to the control. Treatment (n-Be/HapNC, 100 kg ha À1 ) showed the lowest transfer coefficient of Ni (0.53) and Cu (0.048) compared to control (0.71 and 0.097), respectively. Treatments of NMs significantly exhibited increases in fresh weight, pods, and seeds, compared to the control. From all findings, it is obtained that nano-forms of such materials can immobilize HM in contaminated soil, enhance its characteristics, decrease HM-uptake by plants, and are considered good immobilizers for HM in soil. These materials play a role in treating contaminated soil and thus making it suitable for agriculture.

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Section: Discussionmentioning

confidence: 99%

Remediation of heavy metals in contaminated soil by using nano‐bentonite, nano‐hydroxyapatite, and nano‐composite

El-Nagar

Abdel-Halim

2021

Land Degrad Dev

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“…Bentonite application to sandy soil reduced the water loss of deep filtration, kept the nutrients from leaking, and improved water characteristics such as the water holding capacity. 63 El-Nagar and Sary 64 indicated that the application of bentonite and nanobentonite resulted in an increase in available water (AW) and water holding capacity (WHC) compared to the control. The best treatments of nanobentonite, followed by raw bentonite, gave the highest values of the elemental content (N, P, and K) in the soil or grain and straw of wheat crop.…”

Section: Multiple Roles Of Nps In Plant Researchmentioning

confidence: 99%

The potential of nanomaterials for sustainable modern agriculture: present findings and future perspectives

Farooq

Hannan

Islam

et al. 2022

Environ. Sci.: Nano

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“…Some authors explain bentonite's high adsorption capacity with the NH 4 + group, which is formed thanks to its high CEC, with a value generally around 40-130 cmol•kg −1 . Some studies conducted in 2017 by scientists revealed that raw bentonite has a NH 4+ adsorption capacity of 19.01 mg•g −1 , which implies 53% adsorption efficacy, which can rise to 81% when the quantity of nanoclay is increased up to a concentration of 40 g•L −1 [243][244][245][246][247].…”

Section: Bentonitementioning

confidence: 99%

Uses of Nanoclays and Adsorbents for Dye Recovery: A Textile Industry Review

et al. 2021

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Wastewater recovery is one of the most pressing contaminant-related subjects in the textile industry. Many cleaning and recovery techniques have been applied in recent decades, from physical separation to chemical separation. This work reviews textile wastewater recovery by focusing on natural or synthetic nanoclays in order to compare their capabilities. Presently, a wide variety of nanoclays are available that can adsorb substances dissolved in water. This review summarizes and describes nanoclay modifications for different structures (laminar, tubular, etc.) to compare adsorption performance under the best conditions. This adsorbent capacity can be used in contaminant industries to recover water that can be used and be recontaminated during a second use to close the production circle. It explores and proposes future perspectives for the nanoclay hybrid compounds generated after certain cleaning steps. This is a critical review of works that have studied adsorption or desorption procedures for different nanoclay structures. Finally, it makes a future application proposal by taking into account the summarized pros and cons of each nanoclay. This work addresses contaminant reuse, where part of the employed dyes can be reused in printing or even dyeing processes, depending on the fixing capacity of the dye in the nanoclay, which is herein discussed.

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Synthesis and characterization of nano bentonite and its effect on some properties of sandy soils

Cited by 23 publications

References 11 publications

Remediation of heavy metals in contaminated soil by using nano‐bentonite, nano‐hydroxyapatite, and nano‐composite

Remediation of heavy metals in contaminated soil by using nano‐bentonite, nano‐hydroxyapatite, and nano‐composite

The potential of nanomaterials for sustainable modern agriculture: present findings and future perspectives

Uses of Nanoclays and Adsorbents for Dye Recovery: A Textile Industry Review

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