Environmental Remediation of Metribuzin Herbicide by Mesoporous Carbon—Rich from Wheat Straw

Abstract

Contemporary farming practices and rapid industrialization over the last few decades, have raised significant soil and water pollution with extreme toxic effects to humans and ecosystems. The widespread and inefficient use of pesticides, which surpass the soil’s self purification capability, has accelerated soil pollution. In this study, wheat straw biochar was obtained using the traditional pyrolysis technique and its characterization; in addition, the adsorption efficiency of metribuzin was investigated. Biochars’ physical and chemical characteristics were qualified using scanning electron microscopy and Fourier transform infrared spectroscopy. A batch sorption test and liquid chromatography coupled with mass spectrometry were also used to assess the biochar efficiency. SEM and FTIR confirmed the highly reactive surfaces of biochar, establishing efficient biomass conversion in low-oxygen conditions. The adsorption process showed best fit with pseudo second-order kinetic and Langmuir models, suggesting a chemisorption procedure and monolayer-type removal. Regarding its environmental and agricultural application, wheat straw biochar can be advanced as a recommendation solution for further research, which is fundamental for soil rehabilitation and the immobilization of contaminations.

Toxicity of atrazine and metribuzin herbicides on earthworms (Aporrectodea caliginosa) by filter paper contact and soil mixing techniques

“…22 Pesticide-based soil pollution may have a detrimental impact on the break down and decomposition processes associated with microbial activities. 1 This work confirms the importance of synthetic organic compounds as effective biological agents in different fields.…”

“…Herbicides had the highest ratio (40%) across diverse pesticide categories, followed by insecticides (18%) and fungicides (10%). 1 Atrazine (CAS No. 1912-24-9) is a systemic herbicide that is taken mostly through the roots, but also through the foliage, with acropetal xylem translocation and accumulation in the apical meristems and leaves.…”

“…Various modifications capable of converting and immobilizing pesticides, such as rice husk, fruit peel, straw wastes, or biochar, are included in these remediation technologies. 1 The toxicity of herbicides atrazine and metribuzin on earthworms, as well as toxicity studies for these pesticides, are reviewed in this work.…”

RETRACTED: Immobilization of metribuzin-degrading bacteria on biochar: Enhanced soil remediation and bacterial community restoration

“…In soil, MB residues negatively affect the development of some rotating crops, and on the structure of soil microbes and other life forms (Bedmar et al, 2004;Kucharski et al, 2016;Huang et al, 2018). The negative effect of MB on the abundance and activity of soil microorganisms has been documented by Latha and Gopal, 2010;(Mehdizadeh et al, 2019;Yang X. et al, 2019;Cara et al, 2021).…”

Preparation of Emamectin Benzoate·Hexaflumuron Granules Based on Response Surface Methodology

“…At present, in most reports of pesticide granule preparation, the preparation formulation is changed by gradually increasing or reducing the proportion of each component according to certain rules. Then, a series of tests such as drug loading rate, encapsulation efficiency, and vitro release experiments were carried out, and finally the best performing set of data was taken as the optimal preparation parameters . Wang et al reduced the quality of alginate by 0.05, 0.1, and 0.2 g, while the ratio of clay (cationic cellulose-modified bentonite) increased by 0.05, 0.1, and 0.2 g to change the particle formula; as a result, the optimal release performance of bentonite was 10% .…”