Características, variáveis de produção e aplicação do carvão ativado fisicamente de mesocarpo do coco verde da baía

Abstract

The main purpose of this work was the production of activated carbon (AC) through natural resources. The aforementioned adsorbent was obtained through the mesocarp fiber precursor of the coconut of the bay (Cocus Nucífera, L.) and can be found abundantly in tropical countries such as Brazil. An immediate analysis was made in the raw material, trying to indicate: Moisture, ash content, fixed carbon and amount of volatile materials present in the green coconut. Thus, adsorbents were produced from the rotary CHINO furnace with a slow pyrolysis tubular reactor, with temperatures reaching up to 900 ° C, heating rate 5, and 10 ° C. min-1, and physical activation time of 10 to 40 minutes. Its best programming 900ºC / 10 ° C.min-1 / 35min. Then, studies were carried out on the chemical and textural properties, which are bound to the BET surface area and micropores, which were verified by analysis in a porosimeter ASAP2020, with surface area reaching 945 m2.g-1 and with its area of microporos composing more than 75% of the BET area, being used only physical activation. Adsorption tests were also carried out with the CA to observe its efficiency, using the stirred incubator and the ultraviolet spectrophotometer, using the methylene blue dye and the agrochemicals: 2,4- dichlorophenoxyacetic acid, as known as 2,4 D which is an herbicide, and the 2,3- dihydro-2,2-dimethylbenzofuran-7-ylmethylcarbamate, a.k.a Furadan.