* Corresponding authors

^a Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Be’er-Sheva, Israel
E-mail: alfontal@bgu.ac.il
Fax: +972-8-6479576
Tel: +972-8-6479066

^b Department of Chemistry, Ben-Gurion University of the Negev, Be’er-Sheva, Israel
E-mail: meijler@bgu.ac.il
Fax: +972-8-6472943
Tel: +972-8-6472751

^c Unit of Environmental Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel