2017
DOI: 10.1016/j.microc.2017.04.021
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Sorption of Cr(III) and Cr(VI) to K 2 Mn 4 O 9 nanomaterial a study of the effect of pH, time, temperature and interferences

Abstract: A Rancieite type material (K2Mn4O9) nanomaterial was synthesized and tested for the removal of chromium (III) and chromium (VI) from aqueous solutions. The synthesized nanomaterial was characterized using powder XRD and SEM. XRD showed weak diffraction peaks at only at the angles associated with K2Mn4O9. The SEM corroborated that the nanoparticles were present; however, the nanoparticles were clustered into larger aggregates. Batch studies were performed to determine the optimum pH, capacity, time dependency, … Show more

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Cited by 36 publications
(13 citation statements)
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“…Other studies were performed approximately at 30ºC [39,48,49,51,[58][59][60][61][62][63], at 35ºC [37], and even at 40ºC [64,65] most likely ajusting to the natural conditions existing in warmer countries. Apart from the cases described by [8,9,39,66,67], efficiency of chromium sorption increases with temperature.…”
Section: Type Of Solutionsmentioning
confidence: 84%
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“…Other studies were performed approximately at 30ºC [39,48,49,51,[58][59][60][61][62][63], at 35ºC [37], and even at 40ºC [64,65] most likely ajusting to the natural conditions existing in warmer countries. Apart from the cases described by [8,9,39,66,67], efficiency of chromium sorption increases with temperature.…”
Section: Type Of Solutionsmentioning
confidence: 84%
“…Numerous studies have been published on chromium sorption in aqueous phase using various materials and in particular synthetic nanomaterials [9,[35][36][37][38][39]. To select the articles For each selected article, it was extracted the information related to the parameters considered relevant in sorption [7][8][9]: name and nature of the sorbent, mass of the sorbent with respect to the water volume, type of water used in the experiment, type of experiment (single or other contaminants besides chromium), pH, temperature, contact time between the sorbent and the solution, initial concentration of chromium, chromium species initially present in solution, and removal efficiency. Table 2 lists the synthetic nanomaterials and the experimental conditions employed in the studies of the selected articles from the literature.…”
Section: Materials and Methodologymentioning
confidence: 99%
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