An examination of the uptake of lanthanum from aqueous solution by crab shell particles

2009 ◽  
Vol 152 (1) ◽  
pp. 116-121 ◽  
Author(s):  
K. Vijayaraghavan ◽  
Arun Mahadevan ◽  
Umid Man Joshi ◽  
R. Balasubramanian
Keyword(s):  
Aqueous Solution ◽  
Crab Shell ◽  
Shell Particles

scholarly journals Nickel Recovery from Aqueous Solution Using Crab Shell Particles

2005 ◽  
Vol 23 (4) ◽  
pp. 303-312 ◽  
Author(s):  
Kuppusamy Vijayaraghavan ◽  
Joseph Raj Jegan ◽  
Kandasamy Palanivelu ◽  
Manickam Velan
Keyword(s):  
Aqueous Solution ◽  
Crab Shell ◽  
Nickel Ion ◽  
Freundlich Model ◽  
Nickel Ions ◽  
Maximum Sorption Capacity ◽  
Nickel Recovery ◽  
Ion Removal ◽  
Maximum Sorption ◽  
Shell Particles

The potential use of crab shell as a sorbent for the removal of nickel(II) ions from aqueous solution was investigated. The binding of nickel ions by crab shell was found to be affected significantly by pH, with the maximum sorption capacity being observed at pH 4.5. The sorption isotherm was well represented using the Freundlich model. Nickel(II) ion removal by crab shell was mainly influenced by the removal of calcium carbonate, proteins and chitin, indicating the importance of these components in nickel ion binding. Co-ions such as Cu2+, Co2+, Cd2+, Zn2+ and Mg2+ affected the Ni(II) ion removal efficiency of crab shell. The biosorbed Ni(II) ions were effectively eluted by various mineral acids, EDTA solutions and NH4OH. Of these, the sodium salt of EDTA (0.01 M) in NH4OH appeared to be the best eluant, being capable of desorbing more than 99% of the sequestered Ni(II) ions with insignificant damage to the shell particles. The biosorbent could be regenerated and re-used in five sorption—elution cycles.

Removal of nickel(II) ions from aqueous solution using crab shell particles in a packed bed up-flow column

2004 ◽  
Vol 113 (1-3) ◽  
pp. 223-230 ◽  
Author(s):  
K. Vijayaraghavan ◽  
J. Jegan ◽  
K. Palanivelu ◽  
M. Velan
Keyword(s):  
Aqueous Solution ◽  
Packed Bed ◽  
Crab Shell ◽  
Shell Particles

Characteristics of lead removal by crab shell particles

1998 ◽  
Vol 33 (7) ◽  
pp. 749-753 ◽  
Author(s):  
Moo-Yeal Lee ◽  
Sung-Ho Lee ◽  
Hyun-Jae Shin ◽  
Toshio Kajiuchi ◽  
Ji-Won Yang
Keyword(s):  
Lead Removal ◽  
Crab Shell ◽  
Shell Particles

scholarly journals Multielemental Determination of Rare Earth Elements in Seawater by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) After Matrix Separation and Pre-concentration With Crab Shell Particles

2021 ◽  
Vol 9 ◽  
Author(s):  
Danyi Li ◽  
Xunuo Wang ◽  
Ke Huang ◽  
Zenghuan Wang
Keyword(s):  
Mass Spectrometry ◽  
Rare Earth ◽  
Inductively Coupled Plasma ◽  
Crab Shell ◽  
Inductively Coupled ◽  
Matrix Separation ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Shell Particles

Considering the unique characteristics of rare earth elements (REEs), the presence of REEs beyond specific limits will adversely affect the environment and it can be employed as a powerful probe for investigating hydrogeochemical processes. This requires sensitive determination of REEs in natural seawater. A matrix separation and pre-concentration technique using the mini-column packed with crab shell particles (CSPs) by inductively coupled plasma mass spectrometry (ICP-MS) as a means of determination has been developed. The aim of the proposed method was to simultaneously determine 16 REEs (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) at trace or ultra-trace concentrations in seawater. The biosorption capacity of CSPs was found to achieve 1.246–1.250 mg g−1 for all elements. In order to optimize performance of the method, the effects of analytical parameters concerning oscillation time, solution pH, salt concentration and eluent concentration were explored. Under the optimal conditions, the detection limits of REEs ranged 0.0006–0.0088 μg L−1, and relative standard deviations (n = 7) varied between 0.55 and 1.39%. The accuracy of developed method was evidenced by applying it to the analysis of REEs in seawater samples, with the overall recoveries at a level of 95.3 and 104.4%. Together, this work provides a promising and cost-effective CSPs-based pretreatment approach for REEs detection in sea environment.

Biosorption of copper(II) and cobalt(II) from aqueous solutions by crab shell particles

2006 ◽  
Vol 97 (12) ◽  
pp. 1411-1419 ◽  
Author(s):  
K. Vijayaraghavan ◽  
K. Palanivelu ◽  
M. Velan
Keyword(s):  
Aqueous Solutions ◽  
Crab Shell ◽  
Shell Particles
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