کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4996770 | 1368274 | 2017 | 4 صفحه PDF | دانلود رایگان |
- Carbonization of milkweed floss provides a hollow carbon.
- Sorbent has very high sorption of 320Â mg/g for lead.
- No modification done to the milkweed carbon.
- Low cost, high sorption suitable for industrial applications.
The persistence of hollow centre in the carbon obtained from milkweed floss provides exceptional sorption characteristics, not seen in common biomasses or their derivatives. A considerably high sorption of 320Â mg of lead per gram of milkweed carbon was achieved without any chemical modification to the biomass. In this research, we have carbonized milkweed floss and used the carbon as a sorbent for lead in waste water. A high surface area of 170Â m2Â gâ1 and pore volume of 1.07Â cm3Â gâ1 was seen in the carbon. Almost complete removal (>99% efficiency) of lead could be achieved within 5Â min when the concentration of lead in the solution was 100Â ppm, close to that prevailing in industrial waste water. SEM images showed that the carbon was hollow and confocal images confirmed that the sorbate could penetrate inside the hollow tube.
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Journal: Bioresource Technology - Volume 245, Part A, December 2017, Pages 296-299