Saiful Saiful, Ajrina Maurisa, Wibisono Yusuf, Marlina Marlina
Chemistry Department, Faculty of Mathematics and Natural Science, Syiah Kuala University, Banda Aceh 23111, Indonesia.
Department of Bioprocess Engineering, Faculty of Agricultural Technology, Brawijaya University, Malang 65141, Indonesia.
Membranes (Basel). 2020 Dec 11;10(12):414. doi: 10.3390/membranes10120414.
A forward osmosis (FO) membrane was developed from a mixture of chitosan and starch, cross-linked using glutaraldehyde. The cross-linked chitosan/starch membrane was revealed to have high mechanical properties with an asymmetric structure. The prepared membrane's performance was investigated as an FO filter assembled in a polypropylene water filter bag and aluminum foil plastic. In order to study the FO process, brackish water was used as a feed solution, drawn using three types of solution (fructose, sucrose, and fructose/sucrose mixture, each with 3 M concentration). The maximum water flux (5.75 L/m h) was achieved using 3 M sucrose. The cross-linked membrane restrained the ions in the feed with a rejection factor value close to 100%. The water quality parameters were evaluated for the physical, chemical, and biological criteria, such as pH, salinity, conductivity, total dissolved solids (TDS), heavy metals, and content. The water quality parameters for the FO-processed water met that set by the World Health Organization for drinking water. FO filter bags with cross-linked chitosan/starch membranes can be an option to produce drinking water during an emergency.
一种由壳聚糖和淀粉的混合物制成的正向渗透（FO）膜，使用戊二醛进行交联。结果表明，交联后的壳聚糖/淀粉膜具有较高的机械性能和不对称结构。将制备的膜作为组装在聚丙烯滤水袋和铝箔塑料中的FO过滤器，对其性能进行了研究。为了研究FO过程，使用微咸水作为进料溶液，用三种溶液（果糖、蔗糖和果糖/蔗糖混合物，每种浓度均为3 M）进行抽吸。使用3 M蔗糖时，实现了最大水通量（5.75 L/m²·h）。交联膜对进料中的离子具有抑制作用，截留因子值接近100%。对水质参数进行了物理、化学和生物学标准评估，如pH值、盐度、电导率、总溶解固体（TDS）、重金属和含量。FO处理后的水的水质参数符合世界卫生组织规定的饮用水标准。带有交联壳聚糖/淀粉膜的FO滤水袋可以作为在紧急情况下生产饮用水的一种选择。
