Utilization of magnetically responsive cereal by-product for organic dye removal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F16%3A00466684" target="_blank" >RIV/86652079:_____/16:00466684 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/16:33161386

Result on the web

<a href="http://dx.doi.org/10.1002/jsfa.7337" target="_blank" >http://dx.doi.org/10.1002/jsfa.7337</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jsfa.7337" target="_blank" >10.1002/jsfa.7337</a>

Result language

angličtina

Original language name

Utilization of magnetically responsive cereal by-product for organic dye removal

Original language description

BACKGROUND: Barley straw, an agricultural by-product, can also serve as a low-cost and relatively efficient adsorbent of various harmful compounds. In this case, adsorption of four water-soluble dyes belonging to different dye classes (specifically Bismarck brown Y, representing the azo group; methylene blue, quinone-imine group; safranin O, safranin group; and crystal violet, triphenylmethane group) on native and citric acid-NaOH-modified barley straw, both in magnetic and non-magnetic versions, was studied. nRESULTS: The adsorption was characterized using three adsorption models, namely Langmuir, Freundlich and Sips. To compare the maximum adsorption capacities (q(max)), the Langmuir model was employed. The q(max) values reached 86.5-124.3 mg of dye per g of native non-magnetic straw and 410.8-520.3 mg of dye per g of magnetic chemically modified straw. Performed characterization studies suggested that the substantial increase in q(max) values after chemical modification could be caused by rougher surface of adsorbent (observed by scanning electron microscopy) and by the presence of higher amounts of carboxyl groups (detected by Fourier transform infrared spectroscopy). The adsorption processes followed the pseudo-second-order kinetic model and thermodynamic studies indicated spontaneous and endothermic adsorption. nCONCLUSION: The chemical modification of barley straw led to a significant increase in maximum adsorption capacities for all tested dyes, while magnetic modification substantially facilitated the manipulation with adsorbent.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GC - Plant growing, crop rotation

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of the Science of Food and Agriculture

ISSN

0022-5142

e-ISSN

—

Volume of the periodical

96

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

2204-2214

UT code for WoS article

000372524700041

EID of the result in the Scopus database

2-s2.0-84960200505