Bactericidal Capability of Potassium Ferrate and Its Influencing Factors in the Process of Treating Micro-Polluted Water

2013 ◽

Vol 295-298 ◽

pp. 1191-1194

Author(s):

Lei Zhang ◽

Zhao Cheng Zhang ◽

Jian Guo Cui

Keyword(s):

Degradation Mechanism ◽

Synergetic Effect ◽

Oxidation Time ◽

Polluted Water ◽

Potassium Ferrate ◽

Experiment Study ◽

Removal Rates ◽

Degradation Effect ◽

Flocculation Time ◽

Simultaneous Degradation

This Experiment study on the simultaneous degradation effect of Cu(II) and Cr(Ⅵ) in the micro-polluted water by potassium ferrate. And the influential elements on the removal effects and probed into the degradation mechanism was analyzed. The results indicated that the removal rates of Cu(II),Cr(Ⅵ) by synergetic effect of potassium ferrate oxidation and coagulation were 76.2%、62.2%,respectively,when the optimizing conditions were as follows: oxidation pH was 7,oxidation time was 20min,flocculation pH was 9,flocculation time was 30min and dosage of potassium ferrate was 40mg/L.

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The Stability of Potassium Ferrate in Water

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.881-883.215 ◽

2014 ◽

Vol 881-883 ◽

pp. 215-218

Author(s):

Kai Luo ◽

Gang Cao ◽

Ming Yu Li ◽

Gang Ren

Keyword(s):

Influencing Factors ◽

Potassium Ferrate ◽

The Stability

The influencing factors of the stability for the potassium ferrate (K2FeO4), including pH, alkalinity, O3, KI, KClO3, KCl, NaClO3and Na2SiO3, were studied in this work. The results showed that the K2FeO4stability in water is best at about pH=10. The higher the alkalinity is, the stronger of K2FeO4stability would be. The O3had no effect to improve the K2FeO4stability. The K2FeO4stability would be best in water with 15mmol/L NaClO3, 10mmol/L Na2SiO3and 9mol/L alkalinity. Under this condition, the K2FeO4content would be 83.28% after 24h.

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Effect and influencing factors of modified biochar adsorption for the removal of nitrate nitrogen from water bodies

E3S Web of Conferences ◽

10.1051/e3sconf/202125703019 ◽

2021 ◽

Vol 257 ◽

pp. 03019

Author(s):

Yang Hui ◽

yan Yujie ◽

zhang Jiaqi

Keyword(s):

Influencing Factors ◽

Nitrate Nitrogen ◽

Research Direction ◽

Research Progress ◽

Polluted Water ◽

Adsorption Effect ◽

Remediation Technology ◽

Modified Biochar ◽

Research Prospect ◽

Unique Surface

Nitrate-nitrogen pollution in water is a global problem. The research on the remediation technology of NO3--N polluted water has become a hot research direction in recent years. Biochar has a good adsorption effect on nitrate nitrogen because of its unique surface structure and rich surface properties. In this paper, the basic properties of biochar are introduced, and the research progress on the adsorption effect of modified biochar for nitrate nitrogen removal and the influencing factors are summarized. The problems and shortcomings in the current technology field were analyzed, and the research prospect and direction of using biochar to remove nitrate nitrogen were pointed out.

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Notice of Retraction: Study on Removal of Phenol and COD from Micro-Polluted Water Using Potassium Ferrate

2011 5th International Conference on Bioinformatics and Biomedical Engineering ◽

10.1109/icbbe.2011.5780940 ◽

2011 ◽

Author(s):

Jianguo Cui ◽

Wenhong Li ◽

Xiaoyan Xu ◽

Chun Xie ◽

Na Li

Keyword(s):

Polluted Water ◽

Potassium Ferrate

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Degradation Effect of UV Synergistic Biomass Activated Carbon Materials on Phenol Pollutants in Water

Journal of Physics Conference Series ◽

10.1088/1742-6596/2079/1/012001 ◽

2021 ◽

Vol 2079 (1) ◽

pp. 012001

Author(s):

Qi Zhang

Keyword(s):

Activated Carbon ◽

Influencing Factors ◽

Removal Rate ◽

Phenol Degradation ◽

Polluted Water ◽

Phenol Removal ◽

Initial Concentration ◽

Carbon Biomass ◽

Degradation Effect ◽

Degradation Ability

Abstract The purpose of the study is to purify the water containing phenol pollutants. The degradation effect of phenol pollutants in water is studied through the combined action of UV and biomass-activated carbon. First, the phenol solution is prepared in the laboratory to simulate the polluted water. Second, the phenol adsorption effects of UV synergistic biomass activated carbon, biomass activated carbon and ordinary industrial activated carbon under different influencing factors are compared by experiments. Finally, the results are analyzed and the conclusions are drawn. The results show that the UV synergistic biomass activated carbon has the strongest degradation ability for phenol, and the highest removal rate is 66.5% when the shaking time is 65 minutes. The adsorption ability of the industrial activated carbon for phenol is the worst. When the initial concentration of phenol is 25mg/L, the maximum phenol removal rate is 96.8%. The maximum phenol removal rate of biomass activa ted carbon appears in the initial concentration of phenol and the phenol removal rate is 60 mg/L. The reaction temperature has little effect on the phenol removal rate of UV synergistic biomass activated carbon and biomass activated carbon. The phenol removal ability of UV synergistic biomass activated carbon and biomass activated carbon reaches the highest when the dosage of activated carbon is 2.0 g, and the rates are 96.4% and 91.1%, respectively. When the pH of the solution is 7, the removal rate of UV synergistic biomass activated carbon reaches a maximum of 97%. When the pH of the solution is 6, the removal rate of biomass-activated carbon reaches the maximum. When the pH of the ordinary industrial activated carbon is 7, the removal rate is the maximum. Due to different influencing factors, UV synergistic biomass activated carbon has the strongest phenol degradation ability. This study provides a reference for the purification of polluted water.

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Modified PCA for Water Use Efficiency Research

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1051.482 ◽

2014 ◽

Vol 1051 ◽

pp. 482-488

Author(s):

Ren Fu Jia ◽

Jun Wei ◽

Hai Jin

Keyword(s):

Water Use Efficiency ◽

Influencing Factors ◽

Water Use ◽

Stepwise Regression ◽

Principal Component ◽

Polluted Water ◽

Theory Analysis ◽

Use Efficiency ◽

Object Of Study ◽

And Control

In order to analyze the water use efficiency of Jiangsu by the method of quantitive research, this article takes the water use amount per ten thousand Yuan GDP as object of study, and discusses the influencing factors of water use efficiency to give the suggestion of policy , regular and control. Theory analysis and expects consulting have been used to get 21 potential influencing factors. Then we get the regression equation which contains water use amount per ten thousand Yuan GDP as the dependent variable, and 21 mentioned factors as independent variables through introducing collected factors’ dates in the period of 1997~2010 into the stepwise regression which is on the basis of principal component analysis. As a result, the major four factors have been got: irrigation area per capita, Industry polluted water standard drainage, education cost, proportion the output value of tertiary industry accounting for of GDP. And this research works for the water use efficiency red line investigation in the future.

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