Biosorption of arsenic (III) from aqueous solutions by blue-green algae spirulina sp. | |
| Author | Kannikar Khamsot |
| Call Number | AIT Thesis no.EV-17-05 |
| Subject(s) | Arsenic Water Bioremediation. Hazardous wastes--Management. 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-17-05 |
| Abstract | Drinking water containing arsenic is a serious problem. Groundwater contamination by As can occur because of anthropogenic and natural sources. Exposure to high levels of arsenic can cause short term or acute symptoms, as well as long-term or chronic health effects. Efficient methods to remove the heavy metals from groundwater are important issues. Biological treatment methods are attractive alternative for heavy metals removal. In this study, As (III) removal by dried and living Spirulina maxima was studied through batch and column experiments. The effects of algae dose and initial arsenic concentration were investigated, and the characterization of this biosorbent was carried out by FTIR spectrum. The adsorption kinetics of As (III) on living Spirulina maxima was better described by pseudo second order model. The equilibrium isotherm for As (III) on living Spirulina maxima could fit well in Freundlich isotherm model with regression coefficients R2> 0.98. Desorption experiments show that NaOH was effective elution of bound As (III) from living Spirulina maxima at 64%. The column experiments show that living Spirulina maxima has arsenic removal at 76% or higher, but dried Spirulina maxima has arsenic removal at 64% or lower. Moreovere, the results indicated that the living Spirulina maxima could fit well with Thomas model (K = 0.995 mL/mg.h., qm= 0.2354 mg/g), and using 5g dried wt. as adsorbent was an effective to treat water 1L that contain As (III) conc. in low level with 20 bath of adsorbent cost. Then, living Spirulina maxima as adsorbent had a great potential for removing of As (III) ion as an eco-friendly process. |
| Year | 2017 |
| 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;Thammarat Koottatep |
| Scholarship Donor(s) | Royal Thai Government Fellowship |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2017 |