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Xiong, Shuiying
- Removal of Nickel from Aqueous Solutions by Activated Carbon Prepared from Sewage Sludge
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Authors
Muqing Qiu
1,
Shuiying Xiong
2
Affiliations
1 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
2 Department of Life Science, Shaoxing University, Yuanpei College, Shaoxing, 312000, CN
1 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
2 Department of Life Science, Shaoxing University, Yuanpei College, Shaoxing, 312000, CN
Source
Nature Environment and Pollution Technology, Vol 14, No 3 (2015), Pagination: 669-672Abstract
Activated carbon has been prepared from sewage sludge of the municipal wastewater treatment plant using chemical activation method. Porous structure of activated carbon was characterized by nitrogen adsorption and scanning electron microscopy. It was also characterized by its surface area and porosity. Its surface is an irregular and porous structure. Then it was used as an adsorbent for the removal of nickel ions from aqueous solution. The effects of parameters such as contact time and initial nickel ion concentration were investigated. The adsorption kinetics of nickel ions in aqueous solution onto activated carbon was investigated through experimental data. The results showed that the adsorption process was perfectly fitted to the pseudo-second order model with very high regression coefficient. It may be evaluated as an environmental friendly and extra economic treatment of nickel ions in aqueous solution.Keywords
Activated Carbon, Porous Materials, Sewage Sludge, Nickel Ions.Full Text
- Adsorption of Cadmium (Cd2+) Ions from Aqueous Solutions on the Modified Montmorillonite
Abstract Views :193 |
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Authors
Affiliations
1 Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, CN
2 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
1 Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, CN
2 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
Source
Nature Environment and Pollution Technology, Vol 15, No 2 (2016), Pagination: 503-508Abstract
Heavy metal pollution has become one of the most serious environmental problems today due to its difficulty in removal, especially in aquatic environments. The technologies for heavy metal ion removal from aqueous solutions are, chemical treatment, physico-chemical treatment and biological treatment. However, the existing methods are relatively expensive. Therefore, there is an urgency that some environmentally sound and practically feasible technologies or sorbents are needed to be developed. In this study, a modified montmorillonite was used for the removal of Cd2+ ions from aqueous solutions. The influence of various operating parameters on the adsorption process was investigated. The kinetics and equilibrium adsorption of Cd2+ ions from aqueous solutions using the modified montmorillonite were also discussed in detail. The objective of this study is to provide fundamental information on the adsorption of heavy metals from aqueous solution on the modified montmorillonite and to investigate the possible mechanisms.Keywords
Adsorption, Cd2+ Ions, Modified Montmorillonite, Kinetic Equilibrium.Full Text
References
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- Foo, K.Y. and Hameed, B.H. 2012. Mesoporous activated carbon from wood sawdust by K2CO3 activation using microwave heating. Biores. Technol., 111: 425-432.
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- Martin, M.A., Thomas, J.R. and Carla, M.K. 2011. Assessing Cd, Co, Cu, Ni, and Pb sorption on montmorillonite using surface complexation models. Appl. Geochem., 26: S154-S157.
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- Xia, L., Hu, Y.X. and Zhang, B.H. 2014. Kinetics and equilibrium adsorption of copper (II) and nickel (II) ions from aqueous solution using sawdust xanthate modified with ethanediamine. Trans. Nonferrous Met. Soc. China, 24: 868-875.
- Adsorption Isotherm and Equilibrium Process of Dye Wastewater Onto Camphor Sawdust
Abstract Views :214 |
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Authors
Affiliations
1 Department of Life Science, Shaoxing University, Yuanpei College, Shaoxing, 312000, CN
2 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
1 Department of Life Science, Shaoxing University, Yuanpei College, Shaoxing, 312000, CN
2 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
Source
Nature Environment and Pollution Technology, Vol 15, No 2 (2016), Pagination: 689-692Abstract
The textile industry plays an important role in the economies of numerous countries around the world. But the dye wastewater from the textile industry has become one of the most serious environmental problems today for its harm, especially in aquatic environments. Dyes are aromatic organic colorants and have potential applications in textile, plastic, rubber, paper and food industries. Therefore, the treatment of dye wastewater is of interest. The potential and effectiveness of the camphor sawdust was studied as an alternative adsorbent for the removal of dye wastewater. The dye Congo red was used as the pollutant. The effects of camphor sawdust dosage, pH in aqueous solution, the contact time and dye Congo red concentration on dye Congo red adsorption by the camphor sawdust were investigated. The results showed that the reaction factors had an important influence on adsorption process. The adsorption isotherm fitted better with the Langmuir model and the adsorption process was an endothermic process. The maximum adsorption capacity obtained from the Langmuir isotherm is 29.51 mg/g.Keywords
Adsorption Isotherm, Equilibrium Process, Dye Wastewater, Camphor Sawdust.Full Text
References
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- Liu, Z.G. and Zhang, F.S. 2011. Removal of copper (II) and phenol from aqueous solution using porous carbons derived from hydrothermal chars. Desalination, 267: 101-106.
- Muthukumar, M. and Selvakumar, N. 2004. Studies on the effect of inorganic salts on decoloration of acid dye effluents by ozonation. Dyes Pigm., 62: 221-228.
- Pekkuz, H., Uzun, I. and Guzel, F. 2008. Kinetics and thermodynamics of the adsorption of some dyestuffs from aqueous solution by poplar sawdust. Bioresour. Technol., 99: 2009-2017.
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- Sun, X.F., Wang, S.G., Liu, X.W., Gong, W.X., Bao, N., Gao, B.Y. and Zhang, H.Y. 2008. Biosorption of malachite green from aqueous solutions onto aerobic granules: kinetic and equilibrium studies. Bioresour. Technol., 99: 3475-3483.
- Xia, L., Hu, Y.X. and Zhang, B.H. 2014. Kinetics and equilibrium adsorption of copper (II) and nickel (II) ions from aqueous solution using sawdust xanthate modified with ethanediamine. Trans. Nonferrous Met. Soc. China, 24: 868-875.
- Zhang, H., Tang, Y., Liu, X.N., Ke, Z.G., Su, X., Cai, D.Q., Wang, X.Q., Liu, Y.D., Huang, Q. and Yu, Z.L. 2011. Improved adsorptive capacity of pine wood decayed by fungi Poria cocos for removal of malachite green from aqueous solutions. Desalination, 274: 97-104.
- Removal of the Dye Congo Red in Aqueous Solution by the Modified Camphor Sawdust Adsorbent
Abstract Views :100 |
PDF Views:1
Authors
Muqing Qiu
1,
Shuiying Xiong
2,
Xiaohong Sun
2,
Haoqiang Zhou
2,
Peichao Luo
2,
Shichao Ren
2,
Jianbo Xu
2,
Yannan Xuan
2
Affiliations
1 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
2 Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, CN
1 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
2 Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, CN
Source
Nature Environment and Pollution Technology, Vol 15, No 1 (2016), Pagination: 301-304Abstract
In recent years, there has been growing interest in finding inexpensive and effective adsorbents such as tea waste, wood, sawdust, kaolin, bentonite and peat. Sawdust is one of the promising adsorbents for removing dye pollutants from wastewaters. In this paper, the modified camphor sawdust is obtained from camphor sawdust with 5% cetyltrimethyl ammonium bromide solution activation. Then, the pore structure characteristics and adsorption dye wastewater in the aqueous solution capacity of the camphor sawdust were investigated. The kinetic and isotherm adsorption of dye wastewater by the camphor sawdust modified with surfactant are discussed in detail. The dye Congo red was chosen as the dye wastewater. The equilibrium data were better represented by Langmuir isotherm model than done by the Freundlich isotherm model. The adsorption process of the modified camphor sawdust for dye Congo red is homogenous. The maximum adsorption capacity obtained from the Langmuir isotherm is 125.39 mg/g.Keywords
Dye Congo Red, Wastewater, Adsorption, Modified Camphor Sawdust.Full Text
- The Adsorption Capacity and Influencing Factors of Cr3+ by the Modified Zeolite from Fly Ash
Abstract Views :116 |
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Authors
Affiliations
1 Department of Architecture Engineering, Shaoxing University Yuanpei College, Shaoxing, 312000, CN
2 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
1 Department of Architecture Engineering, Shaoxing University Yuanpei College, Shaoxing, 312000, CN
2 College of Life Science, Shaoxing University, Shaoxing, 312000, CN
Source
Nature Environment and Pollution Technology, Vol 16, No 3 (2017), Pagination: 867-871Abstract
In this study, the modified zeolite from fly ash was prepared and used as an adsorbent for removal of Cr3+ ion from aqueous solution. The characteristic of the modified zeolite was analysed. The adsorption capacity and influencing factors, such as contact time, pH in solution, the modified zeolite dosage, initial concentration of Cr3+ and temperature, were discussed in detail by the adsorption experiments. The experimental results showed that the modified zeolite from fly ash, own high adsorption capacity for Cr3+ ion in aqueous solution. The influencing factors had an important influence on the adsorption capacity. The removal efficiency of Cr3+ ion increased with the increase of the modified zeolite dosage. However, the removal efficiency of Cr3+ ion decreased with the increase of the initial concentration of Cr3+ ion in aqueous solution. The experimental results showed that the modified zeolite from fly ash has a strong potential ability for removal of Cr3+ ion in aqueous solution.Keywords
Adsorption, Cr3+ Ion, Modified Zeolite, Fly Ash.Full Text