The use of freshwater fish scale of the species Leporinus elongatus as adsorbent for anionic dyes

Vieira, Eunice F.S.; Cestari, Antonio R.; Carvalho, Wagner A.; Oliveira, Cintia dos Santos; Chagas, Renata Alves das

doi:10.1007/s10973-011-2011-x

Cited by 19 publications

(9 citation statements)

References 29 publications

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“…It was observed that the AC produced from fish scales displays an interesting capacity in the adsorption of organic matter present in LL. These results are consistent with results described in the literature, which establish that fish scales have been used successfully to adsorb dyes such as malachite green and remazol …”

Section: Resultssupporting

confidence: 93%

“…These results are consistent with results described in the literature, which establish that fish scales have been used successfully to adsorb dyes such as malachite green 47 and remazol. 24 An increase of the pH of the solution and reduction of the conductivity of the LL was observed during the adsorption process (see Fig. 6).…”

Section: Toxicity Analysismentioning

confidence: 92%

“…Chemical functional groups such as carbonate, phosphate, carboxyl, amide, carbonyl and hydroxyl with binding capability were found in the scales of fish species . Fish scales are usually disposed of in landfills due to their insignificant commercial value and it was estimated that annually the fish processing industry generates c .960 000 t of fish scales .…”

Section: Introductionmentioning

confidence: 99%

“…23 Chemical functional groups such as carbonate, phosphate, carboxyl, amide, carbonyl and hydroxyl with binding capability were found in the scales of fish species. 24 Fish scales are usually disposed of in landfills due to their insignificant commercial value and it was estimated that annually the fish processing industry generates c.960 000 t of fish scales. 25 The collagen present in fish scales is an insoluble fibrous protein found in connective tissues and in the extracellular matrix, 26 and is considered to be a very useful material mainly due to its nontoxicity and well-studied structure.…”

Section: Introductionmentioning

confidence: 99%

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Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Poblete

Cortés

Bakit

et al. 2020

J of Chemical Tech & Biotech

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This study focuses on the removal of organic pollutants present in landfill leachate (LL) using an adsorption process with activated carbon (AC) obtained from fish scales, and subsequently evaluates the reduction of toxicity in the wastewater obtained from the process. The AC obtained is a mesoporous material, with a cumulative pore area of 1.57 m2 g−1, Brunauer–Emmett–Teller (BET) of 1.8329 m2 g−1 and adsorption average pore width of 12.79833 nm. The maximum removal of pollutants was achieved at natural pH (6.71) of the LL, with a load of 3 g L−1, resulting in 60.1% colour and 37.3% chemical oxygen demand (COD). The rate of COD removal per g of AC increase had a maximum value of 5.6 at pH 10 when passing from 0.5 to 1 g AC. The lowest rate of 0.6 occurred for the same pH when it passed from 1 to 2 g AC. At pH 3 the second lowest rate of 3.3 was observed when passing from 2 to 3 g AC. At pH 3 there was always an increase in the rate as more AC was added. Conversely, at natural pH 6.71 the rate tended to decrease. At pH 10 the rate first decreased and then increased. At acidic pH, because it is the one with the lowest COD removal, it would be expected that by adding more AC the rate would continue to increase as there are easily accessible sites still available. Langmuir isotherms fitted adequately with the experimental data, providing an R2 of 0.9657, which is consistent with a monolayer adsorption pattern. The LL before the adsorption process had an inhibition ratio of 20.4%, due to the fact that leachate can be toxic because of the presence of hazardous organic compounds. After adsorption processes at pH 6.71, the inhibition ratios were 16.9%, 13.8%, 12.2% and 10.9% at AC loads of 0.5, 1, 2 and 3 g L−1, respectively, due to decreasing COD and colour of the LL over the course of the treatment. It was observed that the reduction of the inhibition ratio was greater at higher loads of adsorbent. © 2020 Society of Chemical Industry

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Section: Resultssupporting

confidence: 93%

Section: Toxicity Analysismentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Poblete

Cortés

Bakit

et al. 2020

J of Chemical Tech & Biotech

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“…These scales were composed of two different phases, an inorganic phase and another, organic one. The inorganic phase is formed of HA, and the organic phase is formed mainly of collagen (∼32 mass %) . By combining the biocompatibility and controlled release capability of CHIT and the organic and inorganic components of the fish scales, we designed novel films for the controlled release of tetracycline, a drug already extensively used in the treatment of periodontitis …”

Section: Introductionmentioning

confidence: 99%

Tetracycline release from chitosan/fish‐scale‐based membranes

Cortes

Vieira

Cestari

et al. 2013

J of Applied Polymer Sci

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In this study, we aimed to develop new biocompatible membranes on the basis of chitosan (CHIT) and fish scale powder (ESC) from the species Leporinus elongatus. The possibility of using the uncrosslinked membrane (ESC/CHIT) and membrane crosslinked with sodium tetraborate (ESC/CHIT‐B) for tetracycline release was investigated. The drug‐release kinetics were studied at 30 and 37°C in phosphate buffered saline (pH 7.4). For ESC/CHIT, the drug release was faster, about 6 days, whereas the release time of tetracycline impregnated in ESC/CHIT‐B was about 7 days. The in vitro release behavior of tetracycline from both membranes followed the Peppas and Higuchi kinetic models. The kinetics of drug release from ESC/CHIT were regarded as a coupled diffusion/polymer relaxation mechanism, whereas drug release from ESC/CHIT‐B seemed to be controlled by polymer relaxation. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2014, 131, 39943.

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Fish Skin: A Natural Inspiration for Innovation

et al. 2018

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Natural materials and the structures they form, developed and perfected through millions of years of evolution, have long inspired researchers for innovations in science and engineering. One example, fish scales are notable for their strength, toughness, flexibility, and lightweight. These properties are the result of collagen fibrils and hydroxyapatite crystals that have been arranged into three‐layer structures through mechanical locking and chemical bonds, via a process that is still poorly understood. This review aims to compile the established knowledge on the composition, structure, and surface/interfacial features of fish scales. Using mainly Arapaima gigas as a focus, published information and supplementary data acquired through imaging, analytical techniques, and tensiometry are combined. This is done to take a closer look at the surfaces and interfaces of fish scales to identify their unique features and begin to overcome some of the limited understanding of surface functionalities that are created by nature.

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The use of freshwater fish scale of the species Leporinus elongatus as adsorbent for anionic dyes

Cited by 19 publications

References 29 publications

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Tetracycline release from chitosan/fish‐scale‐based membranes

Fish Skin: A Natural Inspiration for Innovation

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