Phenol adsorption by activated carbon produced from spent coffee grounds
Phenol adsorption by activated carbon produced from spent coffee grounds
复制标题
DOI：
10.2166/wst.2011.786
复制
发表时间：
2011-01-01
影响因子：
2.7
通讯作者：
Guerreiro, Mario C.
中科院分区：
文献类型：
--
作者：
Castro, Cinthia S.;Abreu, Anelise L.;Guerreiro, Mario C.
本工作重点介绍了制备活性炭（AC）使用废咖啡渣，农业残留物，作为碳前体和两种不同的活化剂：水蒸气（ACW）和K2 CO 3（ACK）。这些活性炭呈现微孔性质和高表面积（620-950 m2·g-1）。碳，以及商业活性炭（CAC）用作参考，作为苯酚吸附剂进行了评价，显示出高吸附容量（约150毫克g（-1））。对苯酚吸附过程中pH值的影响也进行了研究。不同的活化剂导致AC具有不同的形态学特性，表面积和化学组成，虽然类似的苯酚吸附能力被验证为两个制备的碳。从废咖啡渣中生产活性炭导致了有前途的苯酚去除吸附剂，同时为残留物提供了一个高尚的目的地。
The present work highlights the preparation of activated carbons (ACs) using spent coffee grounds, an agricultural residue, as carbon precursor and two different activating agents: water vapor (ACW) and K2CO3 (ACK). These ACs presented the microporous nature and high surface area (620-950 m(2) g(-1)). The carbons, as well as a commercial activated carbon (CAC) used as reference, were evaluated as phenol adsorbent showing high adsorption capacity (approximate to 150 mg g(-1)). The investigation of the pH solution in the phenol adsorption was also performed. The different activating agents led to AC with distinct morphological properties, surface area and chemical composition, although similar phenol adsorption capacity was verified for both prepared carbons. The production of activated carbons from spent coffee grounds resulted in promising adsorbents for phenol removal while giving a noble destination to the residue.