| Literature DB >> 27653559 |
Marta C Martins1, Eduarda B H Santos2, Catarina R Marques3.
Abstract
The efficiency of oyster-shell waste for the removal of phosphorous (P) in saltwater was herein evaluated. For that, different factors were tested, being attained >56% and >98% P removal by natural oyster shell (NOS)-fraction <0.125mm and COS (calcined oyster shell)-fraction 0.5mm, respectively. Adsorption was the main mechanism suggested for NOS, whilst a co-mechanism of precipitation occurred with COS. NOS adsorption was consistent with Langmuir model and followed both the Elovich and Intraparticle Difusion kinetic models. COS followed only Pseudo-Second Order and, mainly, the Elovich model. Overall, optimal conditions for P removal from saltwater were established for NOS and COS, which will unquestionably allow to comply with regulated P levels for the discharge of wastewater from saltwater RAS.Entities:
Keywords: Adsorption isotherms; Biomaterial characterization; Kinetic models; Recirculating aquaculture system; Saline effluent treatment
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Year: 2016 PMID： 27653559 DOI： 10.1016/j.scitotenv.2016.09.103
Source DB: PubMed Journal: Sci Total Environ ISSN： 0048-9697 Impact factor: 7.963