An effective pre-burning treatment boosting adsorption capacity of sorghum distillers' grain derived porous carbon
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NSTL
Elsevier
Excellent performance of porous carbon adsorbents on wastewater treatment is always stimulating continuous researches to acquire better porous carbon materials by renewable, low-cost and more effective routes. Here, we choose sustainable sorghum distillers' grains (SDGs) as carbon source and utilize a pre-burning treatment plus KOH activation procedure to prepare porous carbon. The pre-burning treatment is demonstrated effective on boosting pores formation and increasing surface area of the prepared porous carbon. The maximum BrunauerEmmett-Teller (BET) surface area of 1965 m(2) g(-1) can be achieved. The adsorption capacity of the prepared porous carbon for methylene blue (MB) is evaluated and a maximum adsorption capacity of 2276.3 mg g(-1) is acquired (increasing by 47% than that of one without pre-burning). The XPS and FTIR evaluations reveal that the pre-burning can also raise surficial oxygen-contained groups, which as active sites boost the MB adsorption.
NSTL
Elsevier
