Biofouling resistant polyethylene cage aquaculture nettings: A new approach using polyaniline and nano copper oxide

Ashraf, P. Muhamed; Sasikala, K.; Thomas, Sujitha; Edwin, Leela

doi:10.1016/j.arabjc.2017.08.006

Cited by 20 publications

(14 citation statements)

References 28 publications

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“…Given the current reliance on copper for biofouling control, efforts have been put into developing methods to minimise the release of copper into the environment whilst maintaining the use of its AF properties (Liu et al 2017). The combination of polymer coatings with embedded copper biocide has shown potential in deterring biofouling while limiting the release of copper on hard surfaces (Vucko, King, et al 2014) and netting (Sato et al 2012;Ashraf and Edwin 2016;Ashraf et al 2017). Although many studies have explored the use of natural compounds (eg from plants, bacteria, fungi, algae and sponges) as antifoulants with varying success (reviewed in Almeida and Vasconcelos 2015), to date none are available for commercial application in finfish aquaculture.…”

Section: Novel Biofouling Control Technologiesmentioning

confidence: 99%

Biofouling in marine aquaculture: a review of recent research and developments

et al. 2019

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Biofouling in marine aquaculture is one of the main barriers to efficient and sustainable production. Owing to the growth of aquaculture globally, it is pertinent to update previous reviews to inform management and guide future research. Here, the authors highlight recent research and developments on the impacts, prevention and control of biofouling in shellfish, finfish and seaweed aquaculture, and the significant gaps that still exist in aquaculturalists' capacity to manage it. Antifouling methods are being explored and developed; these are centred on harnessing naturally occurring antifouling properties, culturing fouling-resistant genotypes, and improving farming strategies by adopting more sensitive and informative monitoring and modelling capabilities together with novel cleaning equipment. While no simple, quick-fix solutions to biofouling management in existing aquaculture industry situations have been developed, the expectation is that effective methods are likely to evolve as aquaculture develops into emerging culture scenarios, which will undoubtedly influence the path for future solutions. ARTICLE HISTORY

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Section: Novel Biofouling Control Technologiesmentioning

confidence: 99%

Biofouling in marine aquaculture: a review of recent research and developments

et al. 2019

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“…Polyaniline (PANI) was synthesised in situ on PE aquaculture cage nets by following the procedure provided by Ashraf et al [5]. The surface activation of the PE cage net was carried out by immersing the net overnight in acidified aniline (0.3 M in 0.1 M HCl) solution and the following day ammonium persulfate (0.3 M in 0.1 M HCl) was added dropwise along the sides of container without disturbing the container.…”

Section: Methodsmentioning

confidence: 99%

“…PE is a non polar molecule and very difficult to coat any antifouling biocides directly over it. Ashraf et al [5] devised a coating method to coat polyaniline (PANI) over PE webbings. Moreover nano copper oxide has been coated on PANI, which provided an excellent biofouling resistance and it was explained due to the generation of hypochlorous acid [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Ashraf et al [5] devised a coating method to coat polyaniline (PANI) over PE webbings. Moreover nano copper oxide has been coated on PANI, which provided an excellent biofouling resistance and it was explained due to the generation of hypochlorous acid [5,6]. Nano technology and nano materials facilitated the exploration of biocides with high efficacy and low requirement of chemicals.…”

Section: Introductionmentioning

confidence: 99%

“…Nano technology and nano materials facilitated the exploration of biocides with high efficacy and low requirement of chemicals. Nano copper oxide coating on PANI [5] and nano copper oxide reinforced hydrogel coating on PE exhibited excellent biofouling resistance [6]. Although copper oxide is a micro nutrient, stakeholders do not use it because of regulatory restrictions.…”

Section: Introductionmentioning

confidence: 99%

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Biofouling inhibition for aquaculture cage nets through a coating nano zinc and silicon oxides incorporated with polyaniline

et al. 2020

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Biofouling is one of the problems faced by cage aquaculture farmers, and its management is expensive. In this present study, polyethylene aquaculture cage nets were coated with the nano structured oxides of zinc and silicon incorporated with polyaniline. Fourier transform infrared spectroscopy and scanning electron microscope data evidenced that a thick coating of nano particle was formed on polyethylene. The oxides were attached to the quinoid part of polyaniline. The antifouling efficiency of treated cage net was tested by exposing in the Cochin estuary for three months. A webbing treated with 0.01% of each of the nano zinc oxide (ZnO) and silicon dioxide (SiO 2) exhibited the highest biofouling resistance. Reinforcement of nano SiO 2 with ZnO increased biofouling resistance as the former complemented the coating to make the system more efficient.

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Impact of Copper Nanoparticles and Copper Ions on Transcripts Involved in Neural Repair Mechanisms in Rainbow Trout Olfactory Mucosa

Razmara

Pyle

2022

Arch Environ Contam Toxicol

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Olfactory mucosa is well-known for its lifelong ability for regeneration. Regeneration of neurons and regrowth of severed axons are the most common neural repair mechanisms in olfactory mucosa. Nonetheless, exposure to neurotoxic contaminants, such as copper nanoparticles (CuNPs) and copper ions (Cu 2+ ), may alter the reparative capacity of olfactory mucosa. Here, using RNA-sequencing, we investigated the molecular basis of neural repair mechanisms that were affected by CuNPs and Cu 2+ in rainbow trout olfactory mucosa. The transcript profile of olfactory mucosa suggested that regeneration of neurons was inhibited by CuNPs. Exposure to CuNPs reduced the transcript abundances of pro-inflammatory proteins which are required to initiate neuroregeneration. Moreover, the transcript of genes encoding regeneration promoters, including canonical Wnt/β-catenin signaling proteins and developmental transcription factors, were downregulated in the CuNP-treated fish. The mRNA levels of genes regulating axonal regrowth, including the growth-promoting signals secreted from olfactory ensheathing cells, were mainly increased in the CuNP treatment. However, the reduced transcript abundances of a few cell adhesion molecules and neural polarity genes may restrict axonogenesis in the CuNP-exposed olfactory mucosa. In the Cu 2+ -treated olfactory mucosa, both neural repair strategies were initiated at the transcript level. The stimulation of repair mechanisms can lead to the recovery of Cu 2+induced olfactory dysfunction. These results indicated CuNPs and Cu 2+ were differentially affected the neural repair mechanism in olfactory mucosa. Exposure to CuNP had greater effects on olfactory repair mechanisms relative to Cu 2+ and dysregulated the transcripts associated with stem cell proliferation and neural reconstitution.

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Biofouling resistant polyethylene cage aquaculture nettings: A new approach using polyaniline and nano copper oxide

Cited by 20 publications

References 28 publications

Biofouling in marine aquaculture: a review of recent research and developments

Biofouling in marine aquaculture: a review of recent research and developments

Biofouling inhibition for aquaculture cage nets through a coating nano zinc and silicon oxides incorporated with polyaniline

Impact of Copper Nanoparticles and Copper Ions on Transcripts Involved in Neural Repair Mechanisms in Rainbow Trout Olfactory Mucosa

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