Removal of some commercial pesticides containing α-Cypermethrin, Deltamethrin and Mancozeb as active ingredients by chitosan solution

Ghimici, Luminiţa; Brunchi, Cristina‐Eliza; Diaconu, Alina

doi:10.1007/s10570-016-1056-1

Cited by 16 publications

(11 citation statements)

References 30 publications

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“…In the case of other chemical families, model wastewaters containing the commercial pyrethroid and dithiocarbamate pesticides were selected to be treated for removal by employing chitosan (Ghimici et al 2016). These tests led to a similar maximum removal efficiency (nearly 90%), irrespective of the pesticide type.…”

Section: Agricultural Wastewatermentioning

confidence: 99%

Chitosan for Direct Bioflocculation Processes

Lichtfouse

Morin‐Crini

Fourmentin

et al. 2019

Sustainable Agriculture Reviews

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Coagulation-flocculation is a major process allowing to remove suspended particles from municipal and industrial wastewater. This process commonly involves metal salts as coagulants and synthetic organic polymers as flocculants. Although those chemicals are cheap, efficient, available and easy to use, they have drawbacks such water pollution by metals, and production of large amounts of toxic sludges. Therefore, safer biocoagulants and bioflocculants of biological origin are currently developed. For instance, the direct flocculation process involves water-soluble, ionic organic polymers, and thus do not need the addition of metal

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Section: Agricultural Wastewatermentioning

confidence: 99%

Chitosan for Direct Bioflocculation Processes

Lichtfouse

Morin‐Crini

Fourmentin

et al. 2019

Sustainable Agriculture Reviews

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show abstract

“…Model wastewaters containing the commercial pyrethroid and dithiocarbamate pesticides were treated for pesticide removal by employing chitosan (Ghimici et al 2016). Results show a similar maximum removal efficiency, nearly 90%, for both pesticides.…”

Section: Agricultural Wastewatermentioning

confidence: 97%

Chitosan for direct bioflocculation of wastewater

et al. 2019

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Coagulation/flocculation is a major phenomenon occurring during industrial and municipal water treatment to remove suspended particles. Common coagulants are metal salts, whereas flocculants are synthetic organic polymers. Those materials are appreciated for their high performance, low cost, ease of use, availability and efficiency. Nonetheless, their use has induced environmental health issues such as water pollution by metals and production of large amounts of sludges. As a consequence, alternative coagulants and flocculants, named biocoagulants and bioflocculants due to their biological origin and biodegradability, have been recently developed for water and wastewater treatment. In particular, chitosan and chitosan-based products have found applications as bioflocculants for the removal of particulate and dissolved pollutants by direct bioflocculation. Direct flocculation is done with water-soluble, ionic organic polymers without classical metalbased coagulants, thus limiting water pollution. Chitosan is a partially deacetylated polysaccharide obtained from chitin, a biopolymer extracted from shellfish sources. This polysaccharide exhibits a variety of physicochemical and functional properties resulting in numerous practical applications. Key findings show that chitosan removed more than 90% of solids and more than 95% of residual oil from palm oil mill effluents. Chitosan reduced efficiently the turbidity of agricultural wastewater and of seawater, below 0.4 NTU for the latter. 99% turbidity removal and 97% phosphate removal were observed over a wide pH range using 3-chloro-2-hydroxypropyl trimethylammonium chloride grafted onto carboxymethyl chitosan. Chitosan also removed 99% Microcystis aeruginosa cells and more than 50% of microcystins. Here, we review advantages and drawbacks of chitosan as bioflocculant. Then, we present examples in water and wastewater treatment, sludge dewatering and post-treatment of sanitary landfill leachate.

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“…This biopolymer allows various modifications on the backbone, including the deacetylation process, for the further numerous applications in the production of biomaterials, drug administration systems, and as a support for cells and enzymes, etc. [92][93][94][95][96].…”

Section: Chitosan-based Aerogelsmentioning

confidence: 99%

New Trends in Bio-Based Aerogels

Niţă¹,

Ghilan²,

Rusu³

et al. 2020

Pharmaceutics

127

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(1) Background: The fascinating properties of currently synthesized aerogels associated with the flexible approach of sol-gel chemistry play an important role in the emergence of special biomedical applications. Although it is increasingly known and mentioned, the potential of aerogels in the medical field is not sufficiently explored. Interest in aerogels has increased greatly in recent decades due to their special properties, such as high surface area, excellent thermal and acoustic properties, low density and thermal conductivity, high porosity, flame resistance and humidity, and low refractive index and dielectric constant. On the other hand, high manufacturing costs and poor mechanical strength limit the growth of the market. (2) Results: In this paper, we analyze more than 180 articles from recent literature studies focused on the dynamics of aerogels research to summarize the technologies used in manufacturing and the properties of materials based on natural polymers from renewable sources. Biomedical applications of these bio-based materials are also introduced. (3) Conclusions: Due to their complementary functionalities (bioactivity, biocompatibility, biodegradability, and unique chemistry), bio-based materials provide a vast capability for utilization in the field of interdisciplinary and multidisciplinary scientific research.

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Removal of some commercial pesticides containing α-Cypermethrin, Deltamethrin and Mancozeb as active ingredients by chitosan solution

Cited by 16 publications

References 30 publications

Chitosan for Direct Bioflocculation Processes

Chitosan for Direct Bioflocculation Processes

Chitosan for direct bioflocculation of wastewater

New Trends in Bio-Based Aerogels

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