Kill three birds with one stone: Iron-doped graphitic biochar from biogas residues for ammonium persulfate activation to simultaneously degrade benzo[a]pyrene and improve lettuce growth

Abstract Background There are relatively few scientific works on the use of homeopathy to manage plant pathogens, particularly nematodes. A handful of studies focused on Meloidogyne spp. parasitizing vegetables have brought contradictory results on nematode control and enhancement of plant tolerance to parasitism. Objective Our goal was to assess the effect of Cina—a well-known anti-nematode ingredient—on Meloidogyne enterolobii parasitizing lettuce. Methods Cina was applied daily on nematode-inoculated plants, from the seedling stage until harvest. We tested an evenly spaced range of Hahnemannian concentrations (c), which were applied though irrigation with a constant dose of the ingredient. Several absolute and relative controls were employed to allow the assessment of the effect of Cina on nematode reproduction and lettuce growth. Results Cina affected growth of non-parasitized plants, both positively and negatively; this effect was modulated by the c applied and the thermal stress suffered by the plants in one of the assays. The effect of Cina on the growth of nematode-parasitized plants was neutral or negative. Cina reduced nematode reproduction by 25–36%. Conclusion Based on the moderate negative effect of Cina on M. enterolobii reproduction, it seems this ingredient may be useful as a complementary strategy for Meloidogyne control. But Cina did not enhance the tolerance of lettuce to Meloidogyne spp.

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The Role of the Initiator System in the Synthesis of Acidic Multifunctional Nanoparticles Designed for Molecular Imprinting of Proteins

Periodica Polytechnica Chemical Engineering ◽

10.3311/ppch.15414 ◽

2020 ◽

Vol 65 (1) ◽

pp. 28-41

Author(s):

Marwa Aly Ahmed ◽

Júlia Erdőssy ◽

Viola Horváth

Keyword(s):

Acrylic Acid ◽

Binding Affinity ◽

Molecular Imprinting ◽

Low Temperatures ◽

Ammonium Persulfate ◽

Sodium Bisulfite ◽

Multifunctional Nanoparticles ◽

High Affinity ◽

Initiator System

Multifunctional nanoparticles have been shown earlier to bind certain proteins with high affinity and the binding affinity could be enhanced by molecular imprinting of the target protein. In this work different initiator systems were used and compared during the synthesis of poly (N-isopropylacrylamide-co-acrylic acid-co-N-tert-butylacrylamide) nanoparticles with respect to their future applicability in molecular imprinting of lysozyme. The decomposition of ammonium persulfate initiator was initiated either thermally at 60 °C or by using redox activators, namely tetramethylethylenediamine or sodium bisulfite at low temperatures. Morphology differences in the resulting nanoparticles have been revealed using scanning electron microscopy and dynamic light scattering. During polymerization the conversion of each monomer was followed in time. Striking differences were demonstrated in the incorporation rate of acrylic acid between the tetramethylethylenediamine catalyzed initiation and the other systems. This led to a completely different nanoparticle microstructure the consequence of which was the distinctly lower lysozyme binding affinity. On the contrary, the use of sodium bisulfite activation resulted in similar nanoparticle structural homogeneity and protein binding affinity as the thermal initiation.

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Effect of decreasing nitrogen level in nutrient solution on butterhead lettuce growth, yield and leaf nutrient content in floating system

Journal of Science and Technology of Greenhouse Culture ◽

10.29252/ejgcst.9.3.1 ◽

2018 ◽

Vol 9 (3) ◽

pp. 1-11

Author(s):

E. S. Mortazavi Khorami ◽

R. Barzegar ◽

S. Rizee ◽

◽

...

Keyword(s):

Nutrient Solution ◽

Growth Yield ◽

Nutrient Content ◽

Nitrogen Level ◽

Floating System ◽

Lettuce Growth ◽

Butterhead Lettuce

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Substance Overview for Ammonium persulfate

The MAK-Collection for Occupational Health and Safety ◽

10.1002/3527600418.mbe772754 ◽

2014 ◽

pp. 1-1

Keyword(s):

Ammonium Persulfate

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Iono-molecular Separation with Composite Membranes II. Preparation and characterization of polysulphone and composite nanoparticles

Revista de Chimie ◽

10.37358/rc.17.2.5420 ◽

2017 ◽

Vol 68 (2) ◽

pp. 203-209

Author(s):

Hussam Nadum Abdalraheem Al Ani ◽

Anca Maria Cimbru ◽

Corneliu Trisca-Rusu ◽

Szidonia Katalin Tanczos ◽

Adriana Cuciureanu ◽

...

Keyword(s):

Chemical Species ◽

Composite Membranes ◽

Ammonium Persulfate ◽

Operating Pressure ◽

Polysulfone Membrane ◽

Polymeric Nanoparticle ◽

Molecular Separation ◽

Copper Complexation ◽

Molecular Separations ◽

Methyl Pyrrolidone

This paper illustrates the possibility of producing iono-molecular separations using ionic colloidal ultrafiltration membrane of polysulfone synthetic solutions of cupric ions and nitro phenols through ultrafiltration assisted by polymeric nanoparticle composites based on polysulfone. In the present work, in order to reduce the operating pressure and increase the flow of water we are using the process of ultrafiltration through a polysulfone membrane in N-methylpyrrolidone 10% prepared by coagulation in isopropanol. The nanoparticles needed in colloidal ultrafiltration had been obtained through the immersion technique of precipitation of a solution of 5% PSf in N-methyl pyrrolidone containing 3% aniline in lower alcohols: methanol, ethanol, and isopropanol, followed by the oxidation of the remaining aniline in a solution of 10% hydrochloric acid and ammonium persulfate. The Nanoparticles of polysulfone (NP-PSf) and The three obtained variants of nanoparticles composites (NP-PSf-PANI) were morphologically (SEM) and (AFM), structurally and compositionally (FTIR) characterized and the results show that nanoparticles polysulfone have a much lower range than the composites. The Possibility of copper complexation by both nitrophenols, and by nanoparticle surface probably lead to the formation of more stable aggregates in the supply, which can sufficiently justify the increased retention. The Retentions of the chemical species in question use in all the tests made the same series:R NP-PSf-PANI-M] R NP-PSf-PANI-E] R NP-PSf-PANI-P] R NP-PSf

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