Chitosan-Thiobarbituric Acid: A Superadsorbent for Mercury

被引：29

作者：

Bhatt, Rahul ^{[1
]}

Kushwaha, Shilpi ^{[2
]}

Bojja, Sreedhar ^{[3
]}

Padmaja, P. ^{[1
]}

机构：

[1] Maharaja Sayajirao Univ Baroda, Fac Sci, Dept Chem, Vadodara 390002, Gujarat, India

[2] Natl Chem Lab, CSIR, Organ Chem Div, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India

[3] Indian Inst Chem Technol, CSIR, Dept Inorgan & Phys Chem, Uppal Rd, Hyderabad 500007, Telangana, India

来源：

ACS OMEGA | 2018年 / 3卷 / 10期

关键词：

AQUEOUS-SOLUTION; ELEMENTAL MERCURY; ACTIVATED CARBON; METAL-COMPLEXES; WASTE-WATER; HG(II) IONS; ADSORPTION; REMOVAL; NANOPARTICLES; DERIVATIVES;

D O I：

10.1021/acsomega.8b01837

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present investigation, chitosan (CH) as supramolecularly cross-linked with thiobarbituric acid to form CT. CT was well characterized by UV, scanning electron microscopy-energy-dispersive X-ray analysis, Fourier trans form infrared, NMR, differential scanning calorimetry, thermogravimetric analysis, and X-ray difTraction analyses, and its adsorption potential for elemental mercury (Hg-0), inorganic mercury (Hg2+), and methyl mercury (CH3Hg+) was investigated. Adsorption experiments were conducted to optimize the parameters for removal of the mercury species under study, and the data were analyzed using Langmuir, Freundlich, an Temkin adsorption isotherm models. CT was found to have high adsorption capacities of 1357.69, 2504.86, and 2475.38 rng/g for Hg-0, Hg2+, and CH3Hg+, respectively. The adsorbent CT could be reused up elemental mercury using 0.01 N thiourea, inorganic mercury using 0.01 N perchloric acid, and methyl to three cycles by eluting mercury with 0.2 N NaCl.

引用

页码：13183 / 13194

页数：12

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