the problem of environmental pollution is of everybody's concern. pollution of zarjoub river in northern iran is most often cause by the uncontrolled disposal of sewage and other wastes resulting from domestic uses of water, industrial wastes containing a variety of pollutants, agricultural affluent from animal husbandry, drainage of irrigation water and urban run-off. a study was carried out t...

Li Si, Kong Ruixue, Sun Lin, Li Sifan, Yang Shuangchun* (Liaoning Shihua University. Fushun, Liaoning, China. 113001) Abstract—Industrial wastewater is a kind of wastewater that generate in the industrial production process. The wastewater from refining and coal carbonization contains high concentration of phenols pollutants. In this paper, study on phenol treatment methods in industrial wastew...

The lifetime degradation induced by light illumination or carrier injection which is observed in Czochralski-grown silicon (Cz-Si) leads to a significant decrease of solar cell efficiency. In this paper, realistic simulations of industrial type solar cells are performed by a simple empirical expression describing bulk lifetime as a function of the doping concentration. The optimal doping concen...

The process parameters of a reverse osmosis system concentrating industrial wastewater in a closed-loop operation have been studied. The model describes system solute concentration as a function of operating time and can be used to predict separation efficiency and permeate flux. The model uses seven parameters that are obtained from membrane and solution data Simulation of a simple salt system...

Industrial concentration and industrial agglomeration are both hot phenomena in industrial development. The former focuses on the scale of individual enterprises. And the latter cares about the scale of specific industry in a named place. Researches on the two respective topics are numerous. However, researches on the relations between them are seldom seen from the beginning researches of most ...

In Industrial complex, major air pollutants like SO2, NOx, SPM, RPM and CO concentrations were standardised. Some site specific air pollutants like fluoride, H2S, methyl mercaptan, hydrogen chloride, vinyl chloride, etc., were also emitted from industries. Methyl mercaptan is a site specific air pollutant in SIPCOT Industrial complex, Cuddalore, TamilNadu. The presence of methyl mercaptan in th...

Stages of Diversification in a Neoclassical World Recent research has documented a U-shaped industrial concentration curve over an economy’s development path. How far can neoclassical trade theory take us in explaining this pattern? We estimate the production side of the Heckscher-Ohlin model using industry data on 44 developed and developing countries for the period 1976-2000. Decomposing the ...

This study demonstrated the feasibility of implementing of MBR in pharmaceutical wastewater independently, and concluded different applications of MBR in industries. Membrane bioreactor (MBR) technology was a new wastewater treatment technology with a combination of membrane separation technology and biological treatment technology, which had unique advantages on pharmaceutical wastewater treat...

This paper investigates trends and determinants of the spatial concentration of China’s manufacturing industries using a large firm-level data for the time period of 1998 to 2005. It is found that the overall industrial agglomeration in China has increased steadily in recent years though it is still much lower than those of the well-developed market economies (such as United States, United King...