Exploring the arsenic removal potential of various biosorbents from water
Article
Article Title | Exploring the arsenic removal potential of various biosorbents from water |
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ERA Journal ID | 5817 |
Article Category | Article |
Authors | Shakoor, Muhammad Bilal (Author), Niazi, Nabeel Khan (Author), Bibi, Irshad (Author), Shahid, Muhammad (Author), Saqib, Zulfiqar Ahmad (Author), Nawaz, Muhammad Farrakh (Author), Shaheen, Sabry M. (Author), Wang, Hailong (Author), Tsang, Daniel C.W. (Author), Bundschuh, Jochen (Author), Ok, Yong Sik (Author) and Rinklebe, Jorg (Author) |
Journal Title | Environment International |
Journal Citation | 123, pp. 567-579 |
Number of Pages | 13 |
Year | 2019 |
Publisher | Elsevier |
Place of Publication | Oxford, United Kingdom |
ISSN | 0160-4120 |
1873-6750 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.envint.2018.12.049 |
Abstract | Globally, contamination of groundwater with toxic arsenic (As) is an environmental and public health issue given to its carcinogenic properties, thereby threatening millions of people relying on drinking As-contaminated well water. Here, we explored the efficiency of various biosorbents (egg shell, java plum seed, water chestnut shell, corn cob, tea waste and pomegranate peel) for arsenate (As(V)) and arsenite (As(III)) removal from As-contaminated water. Significantly, egg shell and java plum seed displayed the greatest As(III) elimination (78–87%) at 7 pH followed by water chestnut shell (75%), corn cob (67%), tea waste (74%) and pomegranate peel (65%). In contrast, 71% and 67% of As(V) was removed at pH 4.1 and 5.3 by egg shell and java plum seed, respectively. The maximum As(V) and As(III) sorption by all the biosorbents was obtained, notably for egg shell and java plum seed, after 2 h contact time. Langmuir isotherm and pseudo-second order models best fitted the sorption data for both forms of As. The –OH, –COOH, –NH2 and sulfur-bearing surface functional groups were possibly involved for As(III) and As(V) removal by biosorbents. The scanning electron microscopy combined with the energy dispersive X-ray spectroscopy (SEM-EDX) analysis showed that the heterogeneous surface of biosorbents, possessing rough and irregular areas, could have led to As sorption. Both As(V) and As(III) were successfully desorbed (up to 97%) from the biosorbents in four sorption/desorption (regeneration) cycles. This pilot-scale study highlights that egg shell and java plum seed have the greatest ability to remove both As species from As-contaminated drinking water. Importantly, these findings provide insights to develop an inexpensive, effective and sustainable filtration technology for the treatment of As in drinking water, particularly in developing countries like Pakistan. |
Keywords | arsenic contamination; filtration materials; drinking water; health; groundwater |
ANZSRC Field of Research 2020 | 410402. Environmental assessment and monitoring |
401102. Environmentally sustainable engineering | |
410404. Environmental management | |
410399. Environmental biotechnology not elsewhere classified | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Agriculture Faisalabad, Pakistan |
School of Civil Engineering and Surveying | |
COMSATS University Islamabad, Pakistan | |
University of Kafrelsheikh, Egypt | |
Foshan University, China | |
Hong Kong Polytechnic University, China | |
Korea University | |
University of Wuppertal, Germany | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q599x/exploring-the-arsenic-removal-potential-of-various-biosorbents-from-water
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