01529nas a2200169   4500008004100000245006400041210006100105260000800166300001700174490000600191520099700197100001701194700002101211700002001232700001601252856009101268       2018                        eng d00a Chitosan-thiobarbituric acid: a superadsorbent for mercury0 aChitosanthiobarbituric acid a superadsorbent for mercury  cOCT  a 13183-131940 v33 aIn 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.1 aBhatt, Rahul1 aKushwaha, Shilpi1 aBojja, Sreedhar1 aPadmaja, P.  uhttps://library.ncl.res.in/content/chitosan-thiobarbituric-acid-superadsorbent-mercury