Materials Science, Energy and Nano-engineering (MSN) Department, Mohammed VI Polytechnic University (UM6P), Lot 660 - Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
Materials Science, Energy and Nano-engineering (MSN) Department, Mohammed VI Polytechnic University (UM6P), Lot 660 - Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
Int J Biol Macromol. 2022 Mar 1;200:182-192. doi: 10.1016/j.ijbiomac.2021.12.153. Epub 2022 Jan 4.
Enormous interest in using marine biomass as a sustainable resource for water treatment has been manifested over the past few decades. Herein, the objective was to investigate the possible use of green macroalgae (Codium tomentosum) for cellulose-based foam production through a versatile and convenient process. Macroporous cellulose monolith was prepared from cellulose hydrogel using freeze-drying process, resulting in a mechanically rigid monolith with a high swelling ratio. The as-produced spongy-like porous cellulosic material was used as bio-sorbent for wastewater treatment, particularly for removing methylene blue (MB) dye from concentrated aqueous solution. The adsorption capacity of MB was subsequently studied, and the effect of adsorption process parameters was determined in a controlled batch system. From the kinetic studies, it was found that the adsorption equilibrium was reached within 660 min. Furthermore, the analysis of the adsorption kinetics reveals that the data could be fitted by a pseudo-second order model, while the adsorption isotherm could be described by Langmuir isotherm model. The maximum adsorption capacity was found to be 454 mg/g. The findings suggested that the produced cellulose monolith could be used as a sustainable adsorbent for water treatment.
在过去的几十年中，人们对利用海洋生物质作为水处理的可持续资源产生了浓厚的兴趣。在此，我们的目的是通过一种通用且方便的方法，研究绿色大型藻类（Codium tomentosum）在纤维素基泡沫生产中的可能用途。通过冷冻干燥工艺，从纤维素水凝胶中制备出具有大孔结构的纤维素整体材料，得到了一种机械强度高、溶胀比高的刚性整体材料。所生产的海绵状多孔纤维素材料可用作废水处理的生物吸附剂，特别是用于从浓缩水溶液中去除亚甲蓝（MB）染料。随后研究了 MB 的吸附容量，并在控制批处理系统中确定了吸附过程参数的影响。通过动力学研究发现，吸附平衡在 660 分钟内达到。此外，吸附动力学分析表明，数据可以用拟二级动力学模型拟合，而吸附等温线可以用 Langmuir 等温线模型描述。最大吸附容量为 454mg/g。研究结果表明，所制备的纤维素整体材料可用作水处理的可持续吸附剂。
