Papers by Author: You Ming Cao

Abstract: Using plants Ophiopogon japonicus, with river sand and soil matrix to construct artificial wetland system, analyzes the effect of the purification of wastewater containing lead, and to study the influences of different flow on the purification efficiency. Experimental results show that the Ophiopogon japonicus artificial wetland to lead the lead in wastewater purification effect is good, with 2 L/d of wastewater flow trendy, Ophiopogon japonicus removal rate as high as 95.8%, of artificial wetland to lead bubbled into 16 L/d for wastewater discharge, removal rate can reach 85.3%.

Abstract: The purpose of this paper is to compare the effect of disposal of lead with calamus artificial marsh composed with sand and soil and the effect of calamus artificial marsh whose host materials are carbon residue and soil under different currency, and discuss the impact of host material to dispose the lead in waste water. Results show that calamus artificial marsh is effective to dispose the lead in waste water. After compared the effect of calamus artificial marsh with two host materials, we discover that calamus artificial marsh which is composed with sand and soil could work better in disposal of the lead in wastewater, which could be a proper artificial marsh.

Abstract: Pd catalyst is very active in Suzuki reaction. As a heterogeneous catalyst, SWNTs/Pd shows highly catalytic ability with Suzuki reaction. We will demonstrate the effect of catalyst’s amount, the reaction time and temperature on Suzuki reaction in this work. In comparison, a control experiment used commercial Pd/C as catalyst in Suzuki reaction has been done. An optimum reaction condition of about reacting 60 min at 50°C with 5% (mass%) catalyst is confirmed finally, and a better catalytic ability of SWNTs/Pd than commercial Pd/C is also observed.