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Maize straw decorated with sulfide for tylosin removal from the water.

Author
Abstract
:

MS-ZnS and MS-ZnS:Mn complexes were synthesized via a simple method. The results showed that sulfide was successfully loaded on the maize straw. The results of fitting the experimental data showed that the sorption conforms to the pseudo-second-order kinetics, and the TYL sorption on MS fit the Henry model well, but the Freundlich model was more suited to MS-ZnS and MS-ZnS:Mn. In addition, the kf values of MS-ZnS (206.0(mg/kg)/(mg/L)n) and MS-ZnS:Mn (382.5(mg/kg)/(mg/L)n) were significantly greater than that of MS (72.2(mg/kg)/(mg/L)n), indicating that ZnS and ZnS:Mn could improve the sorption capacity of TYL on MS. The pH, ionic strength and temperature influence the sorption process, and the sorption ability of TYL on MS-ZnS and MS-ZnS:Mn showed little change when the solution pH was > 5; the amount of TYL sorption on the adsorbents gradually decreased with the increasing concentration of KNO3. Electrostatic interactions, H bonding and hydrophobic interactions are involved in the sorption of TYL on MS, MS-ZnS and MS-ZnS:Mn, and compared with MS, the main mechanism is surface complexation. This research can provide technical support for the utilization of biomass and the restoration of water polluted by antibiotics.

Year of Publication
:
2018
Journal
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Ecotoxicology and environmental safety
Volume
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152
Number of Pages
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16-23
Date Published
:
2018
ISSN Number
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0147-6513
URL
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http://linkinghub.elsevier.com/retrieve/pii/S0147-6513(18)30038-1
DOI
:
10.1016/j.ecoenv.2018.01.025
Short Title
:
Ecotoxicol Environ Saf
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