Journal
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
Volume 18, Issue 5, Pages 442-449Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15226514.2015.1109604
Keywords
arsenic remediation; bioremoval; drinking water; wastewater; biosorbents; contamination
Categories
Funding
- Grand Challenges Canada - Stars in Global Health [0433-01]
- Ministry of Education, Science and Technology [2012R1A1B3001409]
- National Academy of Agricultural Science, Rural Development Administration, Republic of Korea [PJ010896]
- National Research Foundation of Korea [2012R1A1B3001409] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Rural Development Administration (RDA), Republic of Korea [PJ010923032016] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Biosorption efficiency of natural orange peel (NOP) and charred orange peel (COP) was examined for the immobilization of arsenate (As(V)) in aqueous environments using batch sorption experiments. Sorption experiments were carried out as a function of pH, time, initial As(V) concentration and biosorbent dose, using NOP and COP (pretreated with sulfuric acid). Arsenate sorption was found to be maximum at pH 6.5, with higher As(V) removal percentage (98%) by COP than NOP (68%) at 4g L-1 optimum biosorbent dose. Sorption isotherm data exhibited a higher As(V) sorption (60.9mg g(-1)) for COP than NOP (32.7mg g(-1)). Langmuir model provided the best fit to describe As(V) sorption. Fourier transform infrared spectroscopy and scanning electron microscopy combined with energy dispersive X-ray spectroscopy analyses revealed that the -OH, -COOH, and -N-H surface functional groups were involved in As(V) biosorption and the meso- to micro-porous structure of COP sequestered significantly (2-times) higher As(V) than NOP, respectively. Arsenate desorption from COP was found to be lower (10%) than NOP (26%) up to the third regeneration cycle. The results highlight that this method has a great potential to produce unique charred' materials from the widely available biowastes, with enhanced As(V) sorption properties.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available