Sorption characteristics of lead cations on microporous organo-birnessite
Source abstract
Abstract
Abstract The aim of this study was to examine the adsorption characteristics of cationic surfactant modified-birnessite for removal of Pb. For this purpose, Na-birnessite and tetramethylammonium (TMA) cation were used as an inorganic host and cationic surfactant, respectively. Na-birnessite was synthesized by the oxidation of Mn 2 + under alkaline condition, and TMA cation was intercalated in the interlayer of H-birnessite prepared from Na-birnessite. Batch isotherm tests were carried out to investigate the adsorption capacity of the TMA-birnessite for Pb. The characterization of all synthetic birnessites was carried out with powder X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and Brunauer–Emmett–Teller (BET) specific surface area measurements. Also, Fourier transform infrared spectroscopy (FT-IR) was used to investigate sorption behavior of Pb onto TMA-birnessite. TMA-birnessite was found to have higher adsorption ability for Pb than synthetic Na-birnessite and commercial granular activated carbon (GAC). This result suggests that the synthetic organo-birnessites could be effective sorbents for removal of heavy metals from groundwater.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Geochemistry and Elemental Analysis · Adsorption and biosorption for pollutant removal · Heavy metals in environment
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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