Hydrogen sulfide removal in water-based drilling fluid by metal oxide nanoparticle and ZnO/TiO2 nanocomposite

作者：Morgani M Salehi; Saboori R; Sabbaghi S^*

来源：Materials Research Express, 2017, 4(7): 075501.

DOI：10.1088/2053-1591/aa707b

• hydrogen sulfide
• removal
• drilling fluid
• TiO2 and ZnO nanoparticles
• ZnO/TiO2 nanocomposite

Advanced approaches to the application of nanomaterials for environmental studies, such as wastewater treatment and pollution removal/adsorption, have been considered in recent decades. In this research, hydrogen sulfide removal from water-based drilling fluid by ZnO and TiO2 nanoparticles and a ZnO/TiO2 nanocomposite was studied experimentally. The ZnO and TiO2 nanoparticles were synthesized by sedimentation and the sol-gel method. A sol-chemical was employed to synthesize the ZnO/TiO2 nanocomposite. X-ray diffraction, scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface analysis, inductively coupled plasma mass spectrometry (ICP), dynamic light scattering (DLS) and Fourier transform infrared spectroscopy were used to characterize the produced ZnO and TiO2 nanoparticles, and the ZnO/TiO2 nanocomposite. The results showed that the concentration of hydrogen sulfide decreased from 800 ppm to about 250 ppm (about 70% removal) and less than 150 ppm (more than 80% removal) using the TiO2 and ZnO nanoparticles with a 0.67 wt% concentration, respectively. Hydrogen sulfide removal using the ZnO/TiO2 nanocomposite with a 0.67 wt% showed the highest value of removal in comparison with the TiO2 and ZnO nanoparticles. The hydrogen sulfide level was lowered from 800 ppm to less than 5 ppm (99% removal) by the nanocomposite.

• 出版日期2017-7