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<strong>Prospective chemisorption of fluoride utilizing coastal molluscan (Crassostrea Sp.) shell from phosphatic fertilizer pond wastewater, Paradeep, Odisha</strong>

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Title Statement <strong>Prospective chemisorption of fluoride utilizing coastal molluscan (Crassostrea Sp.) shell from phosphatic fertilizer pond wastewater, Paradeep, Odisha</strong>
 
Added Entry - Uncontrolled Name Ray, Arati ; AcSIR, CSIR-IMMT, Bhubaneswar
Kumar, Manish ; CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013
Dhal, Nabin Kumar; CSIR-IMMT, Bhubaneswar
Hariprasad, Durgasi ; Paradeep Phosphates Limited PPL Township, Paradeep, Jagatsinghpur, Odisha- 754145.
 
Uncontrolled Index Term Chemisorption; Fertilizer industry; Fluorapatite; Fluoride; Molluscan shell; Pond wastewater
 
Summary, etc. <span>The present study explores the utilization of very acidic (pH 1.46) and high fluoride (F-) containing (9290 ppm) phosphatic fertilizer industry (Paradeep, Odisha, India) pond wastewater (PW) generated from phosphogypsum (PG) stacks by using Crassostrea Sp. molluscan shell (MS) as an adsorbent. F- chemisorption batch experiments on molluscan shells (MS) powder (212 - 500 micron) varying 6 different MS (Solid-S) to PW (Liquid-L) i.e. S/L ratios (1: 8 to 1: 30), time (0.08 to 48 hours) and fluoride concentration (4645 – 8361 ppm) as diluted PW. Chemisorption of F- peaked with 1: 20 S/L ratio at 24 hrs and its concentration in the supernatant reduced by 99.9 %. XRF, FTIR and XRD analysis of MS and its chemisorbed residues confirmes the role of relatively high calcium containing MS (72 % CaO) towards formation of Fluorapatite (FA) [Ca5(PO4)3F]. Desorption experiments of FA residue for 24 hrs, highlights the stability of F- chemisorption process on MS, which is confirmed by presence of FA in desorbed residue through XRD analysis. The research findings establish prospects of F- recovery from PW through chemisorption process utilizing selected MS.</span>
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2021-03-03 15:29:50
 
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http://op.niscair.res.in/index.php/IJCT/article/view/35683
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 27, ##issue.no## 6 (2020): Indian Journal of Chemical Technology
 
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