Preparation and cyclic utilization assessment of palygorskite/carbon composites for sustainable efficient removal of methyl violet
Source abstract
Abstract
Abstract Palygorskite/carbon composites were constructed by using the spent bleaching earth after bleaching of animal fat as feedstock via one-step calcination and deemed to be adsorbents for the efficient removal of methyl violet. And continuous cyclic adsorption of methyl violet using the obtained palygorskite/carbon composites was emphatically evaluated by continuous adsorption-calcination process in this study. The results unveiled that the formed carbon species were closely anchored on the palygorskite surface, and the as-prepared palygorskite/carbon composites always exhibited a high adsorption capacity for methyl violet though the calcination temperature, initial pH, initial concentration of dye and contact time varied. By a simple thermal regeneration process, the exhausted adsorbents were recycled repeatedly for methyl violet removal. Interestingly, no obvious decrease in the adsorption capacity of the palygorskite/carbon composites prepared at 300 °C was detected after ten times cycles calcination. It developed a novel avenue to fully utilize spent bleaching earth and exhausted palygorskite/carbon composites.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Adsorption and biosorption for pollutant removal · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
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