http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Adsorption of chromium (VI) on functionalized and non-functionalized carbon nanotubes
Nabisab Mujawar Mubarak,Raj Kogiladas Thines,Noor Rosyidah Sajuni,Ezzat Chan Abdulla,Jaya Narayan Sahu,Poobalan Ganesan,Natesan Subramanian Jayakumar 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.9
We did a comparative study on the adsorption capacity of Cr (VI) between functionalized carbon nanotubes(CNTs) and non-functionalized CNTs. The statistical analysis reveals that the optimum conditions for the highest removalof Cr (VI) are at pH 9, with dosage 0.1 gram, agitation speed and time of 120 rpm and 120 minutes, respectively. Forthe initial concentration of 1.0 mg/l, the removal efficiency of Cr (VI) using functionalized CNTs was 87.6% and 83%of non-functionalized CNTs. The maximum adsorption capacities of functionalized and non–functionalized CNTs were2.517 and 2.49 mg/g, respectively. Langmuir and Freundlich models were adopted to study the adsorption isotherm,which provided a KL and KF value of 1.217 L/mg and 18.14 mg1−nLn/g functionalized CNT, while 2.365 L/mg and 2.307mg1−nLn/g for non-functionalized CNTs. This result proves that functionalized CNTs are a better adsorbent with a higheradsorption capacity compared with the non-functionalized CNTs.