Optimization of Lead Removal via Napier Grass in Synthetic Brackish Water using Response Surface Model

2017 5th International Conference on Environment Pollution and Prevention

生态环境科学

Hongsawat, P.^1 ; Suttiarporn, P.^1 ; Wutsanthia, K.^1 ; Kongsiri, G.^1

Faculty of Science Energy and Environment, King Mongkut's University of Technology North Bangkok, Rayong Campus, Thailand^1

关键词: Box-Behnken design;    Brackish water;    NaCl concentration;    Operational variables;    Optimum conditions;    Pb concentration;    Phytoremediation;    Response surface modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/120/1/012020/pdf
DOI  :  10.1088/1755-1315/120/1/012020

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The efficiency of the lead (Pb) phytoremediation by Napier grass was studied on the plant's growth and plant's tolerance on the Pb toxicity in synthetic brackish water. It was found that the plant was high tolerance to high level of Pb concentration (10 mg/l) in synthetic brackish water. Which revealed on the possibilities of plant's growth under the presence of Pb contaminated condition. According to the Pb removal efficiency, the highest one (88.63±4.9%) was found at 10 ppm Pb concentration, 0.3 g/l NaCl concentration during the period 45 day. However, this study investigated the optimum condition for lead (Pb) removal from synthetic brackish water using phytoremediation treatment with Napier grass through a Box-Behnken Design. Three operational variables, i.e. Pb concentration (1, 5.5, 10 mg/l), NaCl (0.1, 0.3, 0.5 g/l) and period time (7, 26, 45 day), were determined. The results were provided evidence that the highest Pb removal efficiency (93.56%) from synthetic brackish water via Napier grass was Pb and NaCl concentration at 10 mg/l and 0.5 g/l during 45 day.