The focus of this paper is the synthesis of activated carbons by a controlled, low temperature, air gasification of macadamia nut shell ("macshell") and coconut shell charcoals. This work builds upon earlier publications in which we described a novel three-step process that produced high-yield activated carbons with moderate surface areas from biomass charcoal. Here we show how the process can be employed to produce high quality, high surface area, activated carbons. Our main goals are to demonstrate the possibility of producing activated carbons from biomass charcoals by air gasification, and to provide insights into the development of the surface area of the activated carbon during activation.
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