Treatment of acetamiprid insecticide from artificially contaminated water by colloidal manganese dioxide in the absence and presence of surfactants

Abstract

Qamruzzaman and Abu Nasar *Acetamiprid is one of the most important pesticides and is effective against a number of insects. The increasing use of insecticides in the agricultural field is associated with a significant risk to water resources and aquatic systems. Thus the degradation of such compounds, after fulfillment of their insecticidal role, is essential to eliminate or minimize the contamination of water. The degradative treatment of acetamiprid insecticide from artificially contaminated water by water soluble colloidal MnO 2 in acidic medium (HClO 4 ) has been studied spectrophotometrically in the absence and presence of surfactants. The experiments have been performed under the pseudo-first-order reaction conditions with respect to MnO 2 . The degradation kinetics has been observed to be first-order with respect to MnO 2 while fractional-order in both acetamiprid and HClO 4 . The anionic surfactant, sodium dodecyl sulfate (SDS) has been observed to be ineffective. On the other hand the reaction in the presence of cationic surfactant, cetyltrimethyl ammonium bromide (CTAB) could not be followed as well because it possesses a positive charge opposite to that of colloidal MnO 2 causing flocculation and therefore could not be studied further. However, the addition of non-ionic surfactant, polyethylene glycol tertoctylphenyl ether (TX-100) accelerates the reaction rate. The catalytic effect of TX-100 has been discussed in the light of the available mathematical model. The kinetic data have been exploited to generate the various activation parameters for the oxidative degradation of acetamiprid by colloidal MnO 2 in the absence and presence of non-ionic surfactant, TX-100.

Synergistic effect of non-ionic surfactants Tween 80 and PEG6000 on cytotoxicity of insecticides

“…Exposure to pyrethroids can suppress the reproductive, trigger the apoptosis, increase the rate of chromosomal aberration of mice's marrow cells, and reduce mitochondrial enzyme activities to cause toxicity on SH-SY5Y and sticking agents to improve the effectiveness of many pesticides (Liu and Stansly, 2000;Qamruzzaman and Nasar, 2014). The ability of surfactants to induce phospholipids emulsifying and protein denaturation can be a promoting factor that is involved in tissue aggression of insecticides by surfactants (Katagi, 2008).…”

Utilization of Punica granatum peel as an eco-friendly biosorbent for the removal of methylene blue dye from aqueous solution

“…continuously deteriorates the quality of water and become serious threats to the human health. [1][2][3][4][5][6] One of the major sources of water contamination worldwide is the textile industries introducing dyes into water bodies. Further, dyes have become indispensable tools for a variety of industries such as food, paint, paper and pulp, ceramics, cosmetics, glass, medicine, rubber, printing ink, leather, textiles, etc.…”

Modeling of the Inhibitory Effect of Nanoparticles on Amyloid β Fibrillation

“…Often, these steps can be lumped into a single reaction mechanism where we get reaction order in fractions less than 1. The use of fractional order of reaction can be found in Gowda and Rao, Qamruzzaman and Nasar, , Ilyas et al, and Akram et al in oxidative degradation of organic compounds. Therefore, to account for the inhibition of fibrillation by different concentration of NP at very low concentrations, the exponent p < 1 is introduced.…”