Román S, Ledesma B, Álvarez-Murillo A, Sabio E, González J F, González C M
Departamento de Física Aplicada, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. Elvas, s/n, 06006, Badajoz, Spain.
Nanoscale Res Lett. 2016 Dec;11(1):435. doi: 10.1186/s11671-016-1634-z. Epub 2016 Sep 29.
In this work, prawn shell was studied as raw material for the production of mesoporous adsorbents via hydrocarbonization, studying the effect of temperature and time on the process reactivity and final characteristics of the hydrochars. By suitable characterization technique analyses (N2 adsorption at 77 K, SEM observation, ultimate analysis, surface composition), the materials were examined. It was found that in both cases mesoporous materials with low values of S BET due to the presence of CaCO3 on the material structure. In order to provide a potential application for these materials, the adsorption behaviour of hydrochars (HCs) as well as that of pristine prawn shells and ashes from prawn shell combustion was studied for the first time with the model compound p-nitrophenol (PNP). The results indicated that HC treatment was beneficial and enhanced adsorption performance, especially at high values of equilibrium concentration, attaining adsorption capacities up to 1.6 mg g(-1).
在这项工作中，研究了以虾壳为原料通过碳化制备介孔吸附剂，考察了温度和时间对该过程反应活性及最终水热炭特性的影响。通过合适的表征技术分析（77K下的N₂吸附、扫描电子显微镜观察、元素分析、表面组成分析）对材料进行了检测。结果发现，由于材料结构中存在CaCO₃，两种情况下得到的介孔材料的比表面积（S BET）值都较低。为了探究这些材料的潜在应用，首次以对硝基苯酚（PNP）为模型化合物，研究了水热炭（HCs）以及原始虾壳和虾壳燃烧灰烬的吸附行为。结果表明，水热炭处理是有益的，且提高了吸附性能，尤其是在平衡浓度较高时，吸附容量可达1.6mg g⁻¹。
