Nanomaterials

PREPARING NANO ZnO WITH Zn RECOVERED FROM WASTE WATER AND USE IN ANTIBACTERIAL AIR FILTER PRODUCTION

Eylül Büşra Tapanyiğit1, Ali Haydar Ay1,Mehmet Özdemir1, Bilgehan Güzel2
1.	Şampiyon Filtre Pazarlama Sanayi ve Ticaret A.Ş. İskenderun/TURKEY
E-mail: eylultapanyigit@sampiyonfilter.com.tr
2.	Chemistry Department, Art and Science Faculty, University of Çukurova, Adana, TURKEY

Galvanizing is one of the most widely used methods in the industry to protect metals against corrosion. A large amount of zinc waste is generated in zinc galvanizing plants. In the studies carried out within the scope of our project, the zinc in the galvanized wastewater was captured with the help of a magnetic nanoparticle (MNP). Afterwards, MNP-Zn was washed and non-metal impurities were removed. The cleaned MNP-Zn was treated with CH3COOH and the zinc on the MNP was transferred to the solution in the form of zinc acetate salt. The zinc acetate solution was diluted to a concentration of 0.5 M and the same volume of 0.05 M urea was added dropwise. Then, NH3 was added until the pH reached 9 and left to rest for 3 hours at 150oC in the oven. At the end of the period, the precipitated nano zinc oxide was removed by centrifugation and a 5% suspension was prepared and sprayed on the air filter.

Figure 1. ZnO XRD diffraction pattern and particle size distribution

The obtained nano ZnO XRD diffraction patterns were found to be compatible with the catalog. 2 Theta data show that the particle sizes are between 8 and 32 nm and the average particle size is 17 nm. In the antimicrobial effect analysis were used for three for Bacillus and the other three for Pseudomonas aeruginosa test bacteria. When compared with the control sample, it was determined that the prepared ZnO was 85.44% effective against gram (-) bacteria and 68% against gram (+) bacteria.