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Extraction and Preparation of Cellulose Nanofiber from Etlingera elatior and Bambuseae for Bio-filter, and Its Application for Domestic Wastewater Treatment

机译：Etlingera elatior和Bambuseae纤维素纳米纤维的提取，生物滤池的制备及其在生活污水处理中的应用

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Cellulose is abundant natural biopolymer available in plant and microorganism. Due to their properties, cellulose materials are considered as efficient replacements for conventional polymer. Currently, extraction and application of cellulose nanofiber have attracted wide interest due to their nano size, ease of preparation, low cost, tuneable surface properties and enhanced mechanical properties. This research studied the extract and preparation method of cellulose nanofiber from a local plant in Phatthalung including Etlingera elatior and Bambuseae. The application of cellulose nanofiber as filter was also investigated. Cellulose nanofiber was extracted with various solvents such as base, acid, and inorganic salt. Thereafter, mechanical method was applied to break the plant cell wall. Under optimal condition, 30-90 nm of nanofiber was obtained. The spectra of fiber were determined by Fourier Transform Infrared Electroscopy. The spectra showed functional group of C-H and C-O-C belonging to cellulose. Afterward, cellulose nanofiber was prepared for filter for domestic wastewater treatment. The result found that biofilter from Etlingera elatior had higher efficiency than filter from Bambuseae. The filter was reduced bacteria in wastewater. In addition, the other parameters of water after treatment were acceptable following the Water Quality Standard (Thailand).
机译：纤维素是植物和微生物中可利用的丰富的天然生物聚合物。由于其特性，纤维素材料被认为是常规聚合物的有效替代品。目前，纤维素纳米纤维的提取和应用由于其纳米尺寸，易于制备，成本低，可调节的表面性质和增强的机械性能而引起了广泛的关注。本研究研究了Phatthalung本地植物（包括Etlingera elatior和Bambuseae）中纤维素纳米纤维的提取和制备方法。还研究了纤维素纳米纤维作为滤料的应用。用各种溶剂（例如碱，酸和无机盐）提取纤维素纳米纤维。此后，采用机械方法破坏植物细胞壁。在最佳条件下，获得了30-90 nm的纳米纤维。纤维的光谱通过傅里叶变换红外电镜测定。光谱显示属于纤维素的C-H和C-O-C的官能团。之后，制备了纤维素纳米纤维用于生活污水处理过滤器。结果发现，Etlingera elatior的生物滤池的效率高于Bambuseae的滤池。该过滤器减少了废水中的细菌。另外，根据水质标准（泰国），处理后的水的其他参数是可以接受的。

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