Biosorption of arsenic (III) from aqueous solution by blue-green algae spirulina platensis | |
| Author | Jittima Suttipotipong |
| Call Number | AIT Thesis no.EV-16-08 |
| Subject(s) | Arsenic Arsenic waste Arsenic--Environmental aspects. Environmental--Pollution. Water Bioremediation. Spirulina |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-16-08 |
| Abstract | The discharge of heavy metal containing wastewater into environment is a serious problem due to its toxicity to plants and life. Most of the heavy metals are soluble and form aqueous solutions which are difficult separate by ordinary physio-chemical methods. Biological treatment methods are attractive alternative for removal of heavy metals from aqueous solution biosorption and bioaccumulation mechanisms. In this study, Arsenic (As3+) removal by dried and living Spirulina platensis was studied in batch experiments. The effect of pH, initial concentration of metal ions solution, contact time and biosorbent concentration were investigated. Highest arsenic removal 38.92% and 98.23% of dried Spirulina platensis and living Spirulina platensis respectively was obtained under optimum conditions. The characterization of this biosorbent was carried out by FTIR spectrum which brought out the importance of functional groups on cell surface of Spirulina platensis is binding of metal ions in the biosorption processes. The sorption kinetics of As3+ ion on Spirulina platensis was better described by pseudo second-order model in corporating intra-particle diffusion processes. The equilibrium adsorption data for As3+ on dried Spirulina platensis could fit well in both Langmuir and Freundlich isotherm models with regression coefficients R2> 0.99.Spirulina platensis had As3+ binding capacity (qmax) of 0.4109 mg/g. The living Spirulina platensis showed remarkable performance for removing of As3+ ion as an eco-friendly process. |
| Year | 2016 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Annachhatre, Ajit P.; |
| Examination Committee(s) | Chongrak Polprasert;Nguyen, Thi Kim Oanh; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2016 |