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Li, Chunguang
- Analysis of the Competition Network of Industrial Waste Emissions in Beijing, China
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Authors
Affiliations
1 School of Business Administration, Zhejiang Gongshang University, Hangzhou 310018, CN
2 UTP University of Science and Technology, Seminaryjna 19, Bydgoszcz, PL
1 School of Business Administration, Zhejiang Gongshang University, Hangzhou 310018, CN
2 UTP University of Science and Technology, Seminaryjna 19, Bydgoszcz, PL
Source
Nature Environment and Pollution Technology, Vol 14, No 2 (2015), Pagination: 299-306Abstract
Beijing is facing an increasing threat from environmental problems. Since the environment is a public resource, waste emissions from industries are non-competitive and non-exclusive, which indicates that there are competition relationships among industries in Beijing. In order to investigate these relationships in quantity, this paper employs a 2-mode network method to construct a competition network of Beijing's industries using data for 2011 and then analyses the competition network using network indices. Five kinds of wastes are considered: wastewater, waste gas, common solid waste, waste dust and hazardous emissions. Our main findings include: the manufacture of raw chemical materials and chemical products and the manufacture of non-metallic mineral products are under intense emission competition in Beijing. Industries are divided into three groups by waste emission. Two industries mainly discharge hazardous waste; six industries mainly discharge wastewater; and the remaining 12 industries discharge waste dust, common solid waste and waste gas. These relationships should be considered in industrial planning, and industries that discharge similar waste types should not be located close together.Keywords
Industrial Waste Emission, Competition Network, 2-Mode Network, Pollution Control.- Study on Phosphate Removal from Aqueous Solution Using Fe-Mn-Zn Trimetal Oxide Modified Fly Ash
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Authors
Affiliations
1 Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450015, CN
2 Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, CN
1 Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450015, CN
2 Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, CN
Source
Nature Environment and Pollution Technology, Vol 12, No 4 (2013), Pagination: 651-655Abstract
In this work the adsorption of phosphate using the Fe-Mn-Zn trimetal oxide modified fly ash was studied. The experimental results showed that the absorbent could effectively remove phosphate in the pH range 4 to 9 and the maximum phosphate adsorption was at pH 8.0. Kinetic study showed that the phosphate adsorption was well described by pseudo-second-order model. The removal efficiency of phosphate increased with the increase of adsorbent dosage and the decrease of the initial concentration. The adsorption of phosphate could be well described by Langmuir isotherm, the Langmuir constant Q0 was 19.22mg/g. Comparative phosphate adsorption study of the untreated fly ash and the modified fly ash showed that modification with Fe-Mn-Zn trimetal oxide could significantly enhance the phosphate adsorption of the fly ash. The Fe-Mn-Zn trimetal oxide modified fly ash was a potential adsorbent for the removal of phosphate from aqueous systems.Keywords
Adsorption, Fe-Mn-Zn Trimetal Oxide, Fly Ash Modification, Phosphate Removal.- Numerical Simulation Study on Water Quality of a Pumped Storage Reservoir in Arid Region
Abstract Views :148 |
PDF Views:119
Authors
Affiliations
1 College of Civil and Hydrolic Engineering, Ningxia University, Yinchuan, CN
2 College of Civil Engineering, Beifang University for Nationalities, Yinchuan, CN
1 College of Civil and Hydrolic Engineering, Ningxia University, Yinchuan, CN
2 College of Civil Engineering, Beifang University for Nationalities, Yinchuan, CN