@article{MAKHILLRJAS2011679168,
    title = {Effect of Nutshell Hardness, Chemical and Polymeric Compositions on Porosity and Adsorption Capacity of Nutshell-Based Active Carbons},
    journal = {Research Journal of Applied Sciences},
    volume = {6},
    number = {7},
    pages = {501-511},
    year = {2011},
    issn = {1815-932x},
    doi = {rjasci.2011.501.511},
    url = {https://makhillpublications.co/view-article.php?issn=1815-932x&doi=rjasci.2011.501.511},
    author = {O. Nwosu,I. Olu-Owolabi Bamidele,O. Adebowale Kayode,Thomas Henle and},
    keywords = {Active carbons,shell hardness,adsorption capacity,crude fibre,nutshell,porosity,cellulose,lignin},
    abstract = {This study investigated the dependence of iodine numbers, pore volumes and CO<SUB>2</SUB> based active carbon yields on hardness, crude fibre and major polymeric contents of precursor nutshells of <I>Thevetia nerrifolia</I>, <I>Cocos nucifera</I>,<I> Hyphaene thebaica</I>, <I>Hura crepitans</I> and <I>Calophylum inophylum</I>. Physico-chemical studies were performed on the precursor raw nutshell followed by separate carbonization of each of the nutshell in the presence of nitrogen at 480&deg;C for 1 h. Subsequently physical activation of chars was conducted at 840&deg;C with CO<SUB>2</SUB> in a quartz glass tube placed in horizontal furnace. The cellulose content, lignin content, iodine number and BET surface area of prepared active carbons ranged 324.6-412.7, 42.6-293.6, 822.2-1804.0 mg g<SUP>-1</SUP> and 551-2738 m<SUP>2</SUP> g<SUP>-1</SUP>, respectively. Micropore volume ranged 0.100-0.702 cm<SUP>3</SUP> g<SUP>-1</SUP> while mesopore volume ranged 0.017-0.053 cm<SUP>3</SUP> g<SUP>-1</SUP>. Four equations that separately relate crude fibre content and hardness-vickers-diameter ratio of precursors to iodine numbers, porosity, micropore volume and yield of active carbon is therefore suggested.}
    }