The application of a micro-algal/bacterial biofilter for the detoxification of copper and cadmium metal wastes |
| |
| Authors: | S Loutseti DB Danielidis A Economou-Amilli Ch Katsaros R Santas Ph Santas |
| |
| Institution: | 1. University of Athens, Fac. Biology, Dept. Ecology and Systematics, Panepistimiopolis, Athens 15784, Greece;2. University of Athens, Fac. Biology, Dept. Botany, Panepistimiopolis, Athens 15784, Greece;1. Department of Chemical Engineering and Environmental Technology, School of Industrial Engineerings, Valladolid University, Dr. Mergelina, s/n, 47011 Valladolid, Spain;2. Universidad Pedagógica Nacional Francisco Morazán, Boulevard Centroamérica, Tegucigalpa, Honduras;1. University of Technology and Education, University of Danang, 48 Cao Thang St, 550000 Danang, Viet Nam;2. Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St, 10000 Hanoi, Viet Nam;3. Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia;4. National Institute of Hygiene and Epidemiology, 01 Yecxanh St, Hanoi, Viet Nam;5. Department of Chemical Engineering, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Kajang 43000, Selangor, Malaysia;1. College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China;2. Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, China;3. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China;1. Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China;2. State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200433, PR China |
| |
| Abstract: | In the present study the potential of a biofilter containing a mixture of dried micro-algal/bacterial biomass for removing heavy metals (Cu2+, Cd2+) from dilute electroplating waste was tested. The biomass was produced in an artificial stream using the effluent of a municipal waste water treatment plant as a nutrient source, with the additional benefit of reducing phosphorus and nitrogen loadings. Baseline batch experiments determined that optimum adsorption for both metals (80–100%) were achieved with the deionized-H2O conditioned biomass at initial pH 4.0. Other biosorption variables (contact time, initial metal concentration) were also tested. Biosorption data were fitted successfully by the Langmuir model and results showed a high affinity of the used biomass for both metals (qmax 18–31 mg metal/g.d.w). Flow-through column experiments containing Ca-alginate/biomass beads showed that metal adsorption depends also on flow-rate and volume of treated waste. Desorption of both metals with weak acids was very successful (95–100%) but the regeneration of the columns was not achieved due to the destabilization of beads. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
