TY - JOUR
T1 - Modelling on the removal of toxic metal ions from aquatic system by different surface modified Cassia fistula seeds
AU - Hemavathy, Raghava Reddiar Venkatakrishnan
AU - Kumar, Ponnusamy Senthil
AU - Suganya, Subburaj
AU - Swetha, Vaidyanathan
AU - Varjani, Sunita J.
PY - 2019/6
Y1 - 2019/6
N2 - The present work demonstrates the preparation of Cassia fistula seeds for producing activated carbon through physical and chemical treatment for the extrusion of Ni(II) ion contaminated aqueous solution. The readily prepared sorbents were characterized using SEM-EDX and FTIR. The surface morphology of sorbents possesses 1 μm mean particle size with uniform size distribution. Furthermore, optimization of operating parameters such as the pH, initial Ni(II) ion concentration, adsorbent dose, time and temperature were investigated. In isotherm and kinetic aspect, Langmuir maximum adsorption capacity of sulphuric acid modified Cassia fistula seeds was 182.2 (mg/g); obeyed Pseudo first order kinetic model. The Ni(II) ion adsorption system undergoes chemisorption, exothermic, feasible and spontaneous. The excellent properties of the Cassia fistula seeds can be alternate for commercial activated carbon. © 2019 Elsevier Ltd.
AB - The present work demonstrates the preparation of Cassia fistula seeds for producing activated carbon through physical and chemical treatment for the extrusion of Ni(II) ion contaminated aqueous solution. The readily prepared sorbents were characterized using SEM-EDX and FTIR. The surface morphology of sorbents possesses 1 μm mean particle size with uniform size distribution. Furthermore, optimization of operating parameters such as the pH, initial Ni(II) ion concentration, adsorbent dose, time and temperature were investigated. In isotherm and kinetic aspect, Langmuir maximum adsorption capacity of sulphuric acid modified Cassia fistula seeds was 182.2 (mg/g); obeyed Pseudo first order kinetic model. The Ni(II) ion adsorption system undergoes chemisorption, exothermic, feasible and spontaneous. The excellent properties of the Cassia fistula seeds can be alternate for commercial activated carbon. © 2019 Elsevier Ltd.
KW - C. fistula seeds
KW - Isotherm
KW - Kinetics
KW - Modelling
KW - Ni(II) ions
KW - Surface modification
UR - http://www.scopus.com/inward/record.url?scp=85061672933&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85061672933&origin=recordpage
U2 - 10.1016/j.biortech.2019.02.070
DO - 10.1016/j.biortech.2019.02.070
M3 - RGC 21 - Publication in refereed journal
C2 - 30784996
SN - 0960-8524
VL - 281
SP - 1
EP - 9
JO - Bioresource Technology
JF - Bioresource Technology
ER -