Superior Mesoporosity of Lipid Free Spent Coffee Grounds Residues.

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ID: 3911
2019
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Abstract
As part of the biorefinery concept for spent coffee grounds (SCG), production of activated carbon (AC) was investigated from the degreased coffee grounds (DCG) left behind after oil extraction (primarily for biodiesel). The oils were extracted via conventional solvent extraction with GC/GC-MS confirming the oil was comparable to oils produced industrially. More significantly, analysis showed the DCG AC to have a 4-fold increase in mesoporosity than the SCG AC with mesopore volumes of 0.6 and 0.15 cm3 g-1 respectively. Adsorption trials showed a ten-fold increase in capacity for Au3+ from 8.7 to 88.6 mg/g with subsequent experiments confirming that DCG AC displayed standard behavior for mesoporous materials of increasing adsorption capacity with decreasing pH. This raises the potential for valorization of SCG into a functional material for water remediation without the need for templating agents or expansion pre-treatments with the added bonus of an additional material being produced simultaneously.
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dugmore2019superiorchemsuschem Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dugmore, Thomas Iain James;Chen, Zhiren;Foster, Stella;Peagram, Charlie;Matharu, Avtar Singh;
Journal ChemSusChem
Year 2019
DOI
10.1002/cssc.201901232
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