Using zero-valent iron particles for removal of malachite green wastewater

• Main Authors: Po-Chi Yu, 于柏琪
• Other Authors: Jian-Yuan Ding
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/72712177006922794321

碩士 === 輔英科技大學 === 環境工程與科學系碩士班 === 100 === Since July 2005, there had in droves to outgoing message of the high-level cultivation fish for example of bred such as eel, the grouper and so on, that have containing carcinogenic malachite green in China, Hong Kong and Taiwan. Malachite green residues in the tissues and the organ after they absorbing by the fish body, and metabolism. At present, the malachite green in many countries is tubes as banned drugs in aquaculture. Purpose of this research is using zero-valent iron particles of the redox and adsorption capacities to deal with malachite green, and using the UV-Vis and HPLC analysis of results, and then discuss the degradation effects and discuss the reaction kinetics of the relationship between iron particles with malachite green. After a series of batch experiments, the concentration of malachite green decreased with the increasing reaction time, but after the initial reaction time of about 4-6 hours, the overall system reaction efficiency gradually became flat and when the flat status was reached, the processing efficiency of micron meter scale iron particles was slightly higher than that of nanometer scale iron particles. When adding a dispersion agent, the batch processing efficiency results only showed little difference between the two iron particle sizes in reaction effectiveness. We conclude that the pH value of the iron particles has greater impacts on the dispersant experiment. According to the linear reaction, we conclude that the iron particles in a batch reaction are possibly to be in a pseudo-first order or pseudo-second order reaction mode.