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Heavy metals removal by chemical coagulation and precipitation
Abstract
Synthetic wastewater of pH 1.9, consisted of Zn, Cd, Mn and Mg at concentrations of 450, 150, 1,085 and 3,154 mg/l respectively. It was found that the optimum pH for chemical coagulation and precipitation by lime treatment was more than 9.5, which could decrease the concentration of heavy metals pertinent to the Wastewater Standard of the Ministry of Industry. Moreover, if 0.5 mg/l of polymer was added, it could decrease the concentration of heavy metals further. In addition when sodium sulphide solution was used in secondary treatment, it was also found that the optimum pH by lime in primary treatent was more than 9.5 and the optimum concentration of sodium sulphide was more than 250 mg/l.
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Cited by
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Kurniawan, T. A., Chan, G. Y. S., Lo, W.-H., & Babel, S. (2006) · Chemical Engineering Journal · doi:10.1016/j.cej.2006.01.015 · Cited by 2,072
Vardhan, K. H., Kumar, P. S., & Panda, R. C. (2019) · Journal of Molecular Liquids · doi:10.1016/j.molliq.2019.111197 · Cited by 1,618
Review on recent progress in chitosan-based hydrogels for wastewater treatment application
Mohammadzadeh Pakdel, P., & Peighambardoust, S. J. (2018) · Carbohydrate Polymers · doi:10.1016/j.carbpol.2018.08.070 · Cited by 578
Recent advances in heavy metal removal by chitosan based adsorbents
Upadhyay, U., Sreedhar, I., Singh, S. A., Patel, C. M., & Anitha, K. L. (2021) · Carbohydrate Polymers · doi:10.1016/j.carbpol.2020.117000 · Cited by 532
Biosorption: An Interplay between Marine Algae and Potentially Toxic Elements—A Review
Bilal, M., Rasheed, T., Sosa-Hernández, J. E., Raza, A., Nabeel, F., & Iqbal, H. M. N. (2018) · Marine Drugs · doi:10.3390/md16020065 · Cited by 481
Metadata
- Authors
- Charerntanyarak, L.
- Venue
- Water Science and Technology
- Publisher
- IWA Publishing
- Published
- 1999-05-01
- Volume
- 39
- Issue
- 10-11
- Pages
- 135-138
- ISSN
- 0273-1223 (ISSN-L)
- 1996-9732
- OpenAlex
- W4239033501
- Cited by
- 405
- References
- 0
- FWCI
- 0.78
- Type
- journal article
- Language
- en
- Open access
- closed
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