Bio-based fibers in oil spill cleanups / Subramonia Pillai Viju in CHEMICAL FIBERS INTERNATIONAL, (10/2021)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > (10/2021) . - p. 36-37 Titre : Bio-based fibers in oil spill cleanups Type de document : texte imprimé Auteurs : Subramonia Pillai Viju, Auteur Année de publication : 2021 Article en page(s) : p. 36-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants Absorption Adsorption Biomatériaux Biosorbant Fibres végétales Huiles et graisses Hydrocarbures Milieu marin -- Pollution -- Lutte contre Pétrole Index. décimale : 677 Textiles Résumé : Oil spills are a global concern because of their environmental and economic impact. Crude oil released into the marine environment through accidentai spillage or drainage from land causes serious damage to the environment and marine life. Effective decontamination and clean-ups are necessary after the spill for the protection of environment and human health. There are many methods for oil spill removal, but one of the most widely used methods is sorption by sorbents. The commercial absorbents are synthetic in nature and are non-biodegradable. The natural fibers which possess oil absorbency property are suggested as oil absorbents because of their biodegradability. Ideal sorbent materials used for oil spill cleanup include hydrophobicity, oleophilicity, high rate of oil uptake, buoyancy, retention over time, durability in aqueous media, reusability, biodegradability and recovery of oil. It is very difficult to achieve all these in a single material, still these are all needs to be considered before selecting the sorbents. Note de contenu : - Kapok fiber - Milkweed fiber - Coir fiber - Cotton fiber - Jute fiber - Silk fiber - Table : Oil sorption capacity of different sorbents En ligne : https://drive.google.com/file/d/1azRZcZoaXFBSNLpEb04tTjNlhnYhPcjB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36695 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23018	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Bioaccumulation of chromium(III) from aqueous solutions of a leather wastewater treatment plant by Saccharomyces cerevisiae yeast / Patrizia Jankovic in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 11 (11/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 11 (11/2020) . - p. 413-417 Titre : Bioaccumulation of chromium(III) from aqueous solutions of a leather wastewater treatment plant by Saccharomyces cerevisiae yeast Type de document : texte imprimé Auteurs : Patrizia Jankovic, Auteur ; Reno Spinosi, Auteur ; Anna Bacardit, Auteur Année de publication : 2020 Article en page(s) : p. 413-417 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bioaccumulation Biosorbant Chrome trivalent Eaux usées -- Décontamination Eaux usées -- Epuration Levure (Agent de fermentation) Métaux lourds Microorganismes Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : With many industries discharging heavy metals into natural water resources, heavy metals have been found to accumulate in various living organisms which can ultimately threaten human life and pose a big threat to the environment. Thus, in the pursuit of a solution to the above mentioned problem, bioaccumulation has emerged as an interesting option for the removal of heavy metals from wastewater. In this paper, the effectiveness of the yeast Saccharomyces cerevisiae in the bioaccumulation of Cr3+ has been tested. Also, different factors influencing Cr3+ uptake have been discussed. This work has demonstrated that Saccharomyces cerevisiae is an effective Cr3+ biosorbent for tannery wastewater. The conditions of use of this yeast to achieve optimal chromium (III) absorption are: i) when a growth of the biosorbent equivalent to a similar concentration of Cr3+ is obtained, which contains the residual water that needs to be treated; ii) the smaller the biosorbent is the better the biosorption; iii) the uptake of Cr3+ is more efficient when no extra growth medium is added to the wastewater; iv) the longer the exposure period of the yeast to Cr3+ , the bigger the Cr3+ reduction. Since Saccharomyces cerevisiae is an inexpensive, readily available source of biomass, this discovery could be of great use for a low-budget and efficient wastewater treatment system Note de contenu : - EXPERIMENTAL : Microorganisms and growth conditions - Preparation of the chromium standard solution - Cr3+ uptake experiments with nonadapted and adapted saccharomyces cerevisiae - Cr3+ uptake experiments with different biosorbent doses - Cr3+ uptake experiments with different compsitions of growth medium - Cr3+ uptake experiments with different contact times - RESULTS AND DISCUSSION : Cr3+ uptake experiments with non-adapted and adapted saccharomyces cerevisiae - Cr3+ uptake experiments with different biosorbent dose - Cr3+ uptake experiments with different composition of growth medium - Cr3+ uptake experiments with different contact time DOI : https://doi.org/10.34314/jalca.v115i11.4182 En ligne : https://drive.google.com/file/d/1ZllTv5MXrGBIp_6pO0wDqha4Dm8D18LF/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34848 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
22419	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Biosorption of lac dye by the red marine alga Gracilaria tenuistipitata: biosorption kinetics, isotherms, and thermodynamic parameters / Montra Chairat in COLORATION TECHNOLOGY, Vol. 132, N° 6 (12/2016)  

[article]  inCOLORATION TECHNOLOGY > Vol. 132, N° 6 (12/2016) . - p. 472-480 Titre : Biosorption of lac dye by the red marine alga Gracilaria tenuistipitata: biosorption kinetics, isotherms, and thermodynamic parameters Type de document : texte imprimé Auteurs : Montra Chairat, Auteur ; John B. Bremner, Auteur Année de publication : 2016 Article en page(s) : p. 472-480 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Algues marines Biosorbant Biosorption Colorants -- Absorption Eaux usées -- Epuration Fourier, Spectroscopie infrarouge à transformée de Thermodynamique Index. décimale : 667.2 Colorants et pigments Résumé : The hypothesis that the dried, ground biomass of the red marine alga Gracilaria tenuistipitata could be used for the efficient removal of lac dye from aqueous solution was assessed in this work. The effects of parameters such as initial pH, biosorbent dosage, contact time, initial dye concentration, and temperature on the biosorption capacity of the dye were investigated. Equilibrium data were analysed using Langmuir, Freundlich, and Temkin isotherm models, and the Freundlich model provided the highest coefficient of determination values. Biosorption kinetic data were successfully described with a pseudo-second-order model at initial dye concentrations of 50, 80, 100, and 120 mg l?1. The thermodynamic parameters of biosorption – enthalpy change (?H° = ?30.64 kJ mol?1), free energy change (?G° = 4.32 kJ mol?1 at 303 K to 7.78 kJ mol?1 at 333 K), and entropy change (?S° = ?115.38 J mol?1 K?1) – were determined. The negative value of the enthalpy change and positive values of the free energy change indicate that the biosorption process is exothermic and non-spontaneous. The negative value of the entropy change is consistent with decreased randomness at the solid–liquid interface with dye biosorption. Attenuated total reflectance–Fourier transform infrared spectroscopic analysis confirmed the presence of lac dye on the G. tenuistipitata material. The efficiency of lac dye removal by this biomass material at 20 g l?1 and with an initial dye concentration of 50 mg l?1 in acidic solution was 71%, which indicated its potential usefulness as a new dye biosorbent. Note de contenu : - EXPERIMENTAL : Materials and chemicals - Instruments - Biosorption experiments - RESULTS AND DISCUSSION : The influence of initial pH - The influence of contact time - The influence of initial dye concentration - The influence of biosorbent dosage - The influence of temperature - Kinetics of biosorption process - Biosorption isotherm studies - Biosorption thermodynamic parameters - ATR-FTIR spectroscopic analysis DOI : 10.1111/cote.12241 En ligne : https://drive.google.com/file/d/1MPH9qb_EcZQRAL12cl8DzAQVdDq6gISL/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27285 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18506	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Effect of surfactants and electrolyte on removal and recovery of basic dye bu using ficus arica cellulosic fibers as biosorbent / Deepak Pathania in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 4 (07-08/2012)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 49, N° 4 (07-08/2012) . - p. 306-314 Titre : Effect of surfactants and electrolyte on removal and recovery of basic dye bu using ficus arica cellulosic fibers as biosorbent Type de document : texte imprimé Auteurs : Deepak Pathania, Auteur ; Shikha Sharma, Auteur Année de publication : 2012 Article en page(s) : p. 306-314 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Biosorbant Bleu de méthylène Chimie de l'environnement Désorption Electrolytes Fibres cellulosiques Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Natural cellulosic fiber derived from Ficus carica, was used as eco-friendly biosorbent after alkali treatment for methylene blue dye remediation from aqueous system. The biosorbent was characterized by instrumental techniques such as Fourier transform infrared spectroscopy and scanning electron microscopy. The equilibrium behavior of the biosorbent was investigated in presence of electrolyte and surfactants by batch adsorption experiments. It was observed that in presence of ionic surfactants such as sodium dodecylbenzenesulfonate (SDS) and cetyltrimethyl ammonium bromide (CTABr), the adsorption capacity decreased from 38.97 mg g–1to 35.64 mg g–1and 36.75 mg g–1respectively. The equilibrium data were analyzed using the Langmuir and Freundlich isotherm models and were best represented by the Langmuir isotherm model. The pseudo second order kinetic model adequately describes the kinetic data in comparison to first order model. Thermodynamic studies indicated that the adsorption was endothermic and spontaneous. The desorption studies illustrated that the removal of methylene blue dye at optimized condition was 64.95%, out of which 41.53% of methylene blue dye can be recovered by desorption in first cycle. Thus, the biosorbent used in this work proved to be effective materials for the treatment of dye contaminated aqueous systems. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15550 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
14042	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Preparation and application of modified corn straw as a biosorbent for Cr(VI) adsorption / Zeng Chunhui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 4 (07-08/2019)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 4 (07-08/2019) . - p. 213-218 Titre : Preparation and application of modified corn straw as a biosorbent for Cr(VI) adsorption Type de document : texte imprimé Auteurs : Zeng Chunhui, Auteur ; Zhang Ye, Auteur ; Xu Zhang, Auteur ; Qi Lu, Auteur Année de publication : 2019 Article en page(s) : p. 213-218 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Biosorbant Caractérisation Chimie analytique Chrome hexavalent Eaux usées -- Epuration Maïs et constituants Paille Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Modified corn straw, MCS, was prepared by pretreatment and esterification modification technology. The optimisation and mechanism of Cr(VI) adsorption performance was critically investigated via orthogonal experimental design and single-factor comparison experiments. Experimental results indicated that the MCS dosage and pH value had the greatest effect on the Cr(VI) adsorption process. Moreover, the Cr(VI) adsorption rate (CrAR) and maximum adsorption capacity (CrAC) were 96.8 % and 121mg/g respectively under the optimal condition (MCS dosage : 0.04g, adsorption time: 45 minutes, pH3, adsorption temperature: 40°C, Cr(VI) initial concentration : 10mg/L), which was an increase of 10.3 times compared to unmodified corn straw. FTIR analysis testified that carboxyl and ester groups were introduced into the MCS. Meanwhile, it turned out that the cellulose structure ctf MCS was found to be more orderly by SEM analysis than that of CS. The MCS might show great potentiel for application in the adsorption of Cr(VI) in tannery wastewater as a new type of biosorbent. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of modified corn stalk (MCS) - Adsorption tests of Cr(VI) by MCS - Characterisation - RESULTS AND DISCUSSION : Orthogonal experiment results - Influence of MCS dosage on Cr(VI) adsorption - Influence of pH on Cr(VI) adsorption - Influence of temperature on Cr(VI) adsorption - SEM analysis - FTIR analysis En ligne : https://drive.google.com/file/d/1_QV07J2Xpn1E49OcWjF4xdTICk767T2s/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32802 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21085	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Preparation and characterisation of tannery solid waste as an alternative biosorbent for leather dyes / Bianca Mella in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 3 (05-06/2017)  

Permalink

Preparation of an ecofriendly chitosan–ZnO composite for chromium complex dye adsorption / Shanmugam Anandhavelu in COLORATION TECHNOLOGY, Vol. 129, N° 3 (06/2013)  

Permalink

Removal of lead from aqueous solution by an efficient low cost biosorbent / Sultan Alam in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 2 (03-04/2012)

Permalink

Tannery effluent control in India in LEATHER INTERNATIONAL, Vol. 214, N° 4817 (01-02/2012)  

Permalink

Utilization of waste wool fibers for fabrication of wool powders and keratin : a review / Chunhua Zhang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)  

Permalink

---

1 (1 - 10 / 10)