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Fe(III) loaded chitosan-biochar composite fibers for the removal of phosphate from water

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Title Fe(III) loaded chitosan-biochar composite fibers for the removal of phosphate from water
Not Available
 
Creator Kumuduni Niroshika Palansooriya, Sok Kim, Avanthi Deshani Igalavithana, Yohey Hashimoto, Yoon-E. Choi, Raj Mukhopadhyay, Binoy Sarkar, Yong Sik Ok
 
Subject Eutrophication, Clean water and sanitation, Charcoal, Water quality, Chitosan, XANES
 
Description Not Available
Excess phosphorous (P) in aquatic systems causes adverse environmental impacts including eutrophication. This
study fabricated Fe(III) loaded chitosan-biochar composite fibers (FBC-N and FBC-C) from paper mill sludge
biochar produced under N2 (BC-N) and CO2 (BC-C) conditions at 600 ◦C for adsorptive removal of phosphate
from water. Investigations using SEM/EDX, XPS, Raman spectroscopy, and specific surface area measurement
revealed the morphological and physico-chemical characteristics of the adsorbent. The Freundlich isotherm
model well described the phosphate adsorption on BC-N, while the Redlich–Peterson model best fitted the data of
three other adsorbents. The maximum adsorption capacities were 9.63, 8.56, 16.43, and 19.24 mg P g􀀀 1 for BCN,
BC-C, FBC-N, and FBC-C, respectively, indicating better adsorption by Fe(III) loaded chitosan-biochar composite
fibers (FBCs) than pristine biochars. The pseudo-first-order kinetic model suitably explained the phosphate
adsorption on BC-C and BC-N, while data of FBC-N and FBC-C followed the pseudo-second-order and Elovich
model, respectively. Molecular level observations of the P K-edge XANES spectra confirmed that phosphate
associated with iron (Fe) minerals (Fe-P) were the primary species in all the adsorbents. This study suggests that
FBCs hold high potential as inexpensive and green adsorbents for remediating phosphate in contaminated water,
and encourage resource recovery via bio-based management of hazardous waste.
Not Available
 
Date 2021-07-23T09:21:00Z
2021-07-23T09:21:00Z
2021-02-01
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/49539
 
Language English
 
Relation Not Available;
 
Publisher Elsevier