Browsing by Author "Ersan, Mehtap"
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Effects of stirring and aeration rates on lipase production and growth of R. delemar
Ersan, Mehtap; Acikel, Unsal; Acikel, Yesim Sag (ELSEVIER SCIENCE BV, 2012)… -
EFFECTS OF STIRRING AND AERATION RATES ON LIPASE PRODUCTION AND GROWTH OF R. DELEMAR IN THE MEDIA CONTAINING GLUCOSE OR MOLASSES SUCROSE AND PFC
Sag Acikel, Yegim; Ersan, Mehtap; Acikel, Unsal (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2013)Lipases (triacylglycerol hydrolases) are hydrolytic enzymes that can catalyze the hydrolysis of the ester bond of long-chain acylglycerols at the oil-water interface. The effects of stirring rate, aeration rate, and the ... -
The effects of the composition of growth medium and fermentation conditions on the production of lipase by R. delemar
Acikel, Unsal; Ersan, Mehtap; Acikel, Yesim Sag (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2011)Lipases (triacylglycerol hydrolases) are hydrolytic enzymes that can catalyze the hydrolysis of the ester bond of long-chain acylglycerols at the oil-water interface. The present study investigated the effects of inducers, ... -
The investigation of Cu(II) removal by biocomposites synthesized with the immobilization of R. delemar and Candida microorganisms
Ersan, Mehtap; Kip, Feray; Acikelc, Unsal (DESALINATION PUBL, 2017)In this study, Cu(II) adsorption using the biocomposites prepared by the immobilization of chitosan polymer and Candida yeasts (Candida lipolytica, Candida membranaefaciens, Candida tropicalis, Candida utilis) and ... -
Investigation of inhibition kinetics of Zn(II) Ions on the acid phosphatase activity and growth of R-delemar and Zn(II) bioaccumulation
Acikel, Unsal; Ersan, Mehtap (TAYLOR & FRANCIS INC, 2016)This study investigated the production of acid phosphatase enzyme, which plays a direct role in the metal bioaccumulation and growth of Rhizopus delemar, in the presence of increasing concentrations of Zn(II) ions. Inhibition ... -
Investigation of kinetic and thermodynamic characteristics of removal of tetracycline with sponge like, tannin based cryogels
Ersan, Mehtap; Bagda, Esra; Bagda, Efkan (ELSEVIER SCIENCE BV, 2013)The removal of tetracycline (TC) from aqueous environment by new type of sorbents, tannin based cryogels (TAB CRGs) and control cryogels (CRGs) was studied in a batch system. The experimental parameters that affect the ... -
Mono and simultaneous removal of crystal violet and safranin dyes from aqueous solutions by HDTMA-modified Spirulina sp.
Guler, Ulker Asli; Ersan, Mehtap; Tuncel, Eliza; Dugenci, Feride (INST CHEMICAL ENGINEERS, 2016)The process of mono and binary removal of crystal violet and safranin dyes by Spirulina sp. (blue-green algae) modified with cationic surfactant is evaluated. The surfactant used was hexadecyltrimethylammonium bromide ... -
OPTIMIZATION OF ACID PHOSPHATASE PRODUCTION AND ZN(II) BIOACCUMULATION by R. delemar USING RESPONSE SURFACE METHOD
Ersan, Mehtap; Acikel, Unsal (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2014)Acid phosphatase activity, Zn (II) bioaccumulation and growth of R. delemar were investigated as a function of pH, temperature and initial Zn(II) ion concentration. Experimental design was performed by response surface ... -
Removal of tetracycline using new biocomposites from aqueous solutions
Ersan, Mehtap (TAYLOR & FRANCIS INC, 2016)This study investigated the removal of tetracycline (TC) using polypropylene (PP), polystyrene (PS), Saccharomyces cerevisiae (Sc) yeast, and new types of sorbents such as polypropylene-S. cerevisiae (PP-Sc) and Polystyrene-S. ... -
S. cerevisiae cells modified with nZVI: a novel magnetic biosorbent for nickel removal from aqueous solutions
Guler, Ulker Asli; Ersan, Mehtap (DESALINATION PUBL, 2016)The present study was conducted to evaluate the applicability of S. cerevisiae cells modified with nZVI (magnetic biosorbent) for the Ni(II) ions removal from aqueous solutions. This composite was synthesized in ethanol ... -
Synthesis of hydroxyapatite/clay and hydroxyapatite/pumice composites for tetracycline removal from aqueous solutions
Ersan, Mehtap; Guler, Ulker Asli; Acikel, Unsal; Sarioglu, Meltem (INST CHEMICAL ENGINEERS, 2015)Synthesized hydroxyapatite/clay (HA-C) and hydroxyapatite/pumice (HA-P) composites were used for tetracycline (TC) uptake studies from aqueous solution and their uptake capacities were compared. HA-C and HA-P composites ...