Removal of Fluoride by Non-conventional (NLP, PLP, ALP) absorbents

NCIDCAS | Special Issue | December-2018 | Published Online: 22 December 2018    PDF ( 838 KB )
Author(s)
Jain Nidhi 1; Singh Nisha 2; Khapper V.C. 3

1Department of Applied Science, Bharati Vidyapeeth college of engineering Lavale, Pune-412115 (India)

2Department of Chemistry, Government Model Science College, Jabalpur- 482001(India)

3Department of Mechanical Engineering, Bharati Vidyapeeth college of engineering Lavale, Pune-412115 (India)

Abstract

In the present study Neem Leaf Powder (NLP), Peepal Leaf Powder (PLP), Amla Leaf Powder (ALP) was used as absorbent for the removal of fluoride from the solution. NLP, PLP, ALP showed adsorption area and strong affinity toward fluoride. NLP, PLP, ALP was characterized by FTIR, SEM and XRD studies. Adsorption kinetics indicated clearly shows that the percent of fluoride removal increased by increasing adsorbent dose in all cases. Increased adsorbent dosage at fixed F- concentration provided more available active sites and thus increased the extent of fluoride removal. The Langmuir isotherm model could fit the experimental data well. The optimum conditions for fluoride removal were initial concentration: 5.0 mg/L, adsorbent dose: 1gm/50 mL, pH: 2.0, temperature 50˚C ± 2˚C, contact time: 120 min. and shaking time: 1hr. Increasing order of fluoride adsorption on leaf powders was as follows: ALP > NLP > PLP.

Keywords
Adsorption; low cost adsorbent; Fluoride concentration; Water treatment
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