Kalender

The application of a high throughput analysis method for the screening of potential biosurfactants from natural sources has been developed. The method described here is based on the effect of meniscus shape on the image of a grid viewed through the wells of a 96-well plate. Methods of producing the lipopeptide biosurfactant, surfactin, from cultures of Bacillus subtilis (BBK006) have been investigated. A reactor with integrated foam fractionation was designed and used in batch and continuous modes. Neutron reflectometry has been used to study the structure of surfactin at the air/water and at the hydrophobic solid/water interfaces. The study of photoluminescence of single-walled carbon nanotubes wrapped with surfactin was carried out. Synthesis of silver and gold nanoparticles using a borohydrate reduction was performed at three pH levels and two different temperatures in the presence of surfactin that was used to stabilize the formation of silver and gold nanoparticles. Synthesis of brushite particles in reverse microemulsions of the biosurfactant surfactin was investigated. A novel BMSN (biologically synthesized mesoporoussilica nanoparticles) material was prepared using abacteria-mediated biosurfactant. Removal of fluoride from water was studied using the bacterial surfactin mediated novel hydroxyapatite nanoparticle. Low-temperature synthesis of rose-like ZnO nanostructures was synthesized using surfactin and their photocatalytic activity has been checked. Removal of mercury by foam fractionation was also carried out using surfactin. This report describes the use of a renewable, environmentally compatible, biodegradable surfactant as a stabilizing agent for the synthesis of nanoparticles and their application for environmental issues.

Biography

Chien-Yen Chen has completed his PhD from Department of Engineering Science at University of Oxford in 2005 and postdoctoral studies in Earth Science Department from same University in 2006. He was a visiting researcher at Engineering Department at the University of Cambridge from 2011 to 2012. He was the head of the Department of Earth and Environmental Sciences at National Chung Cheng University in Taiwan from 2016 to 2018. He has been now serving as the Dean of the College of Science at National Chung Cheng University in Taiwan since 2018 and the president for Taiwan Chapter, International Medical Geology Association (IMGA) since 2014.

Contact + info: Pavlína Basařová (pavlina.basarova@vscht.cz)