廢棄蛋殼對水溶液中亞甲基藍染料之吸附特性

Effects of The Adsorption of Methylene Blue in Dye Solutions Using Waste Eggshell

杜佳瑾(Jia-Jin Du)

指導教授 ： 林耀堅

國立屏東科技大學/工學院/環境工程與科學系所/碩士(2011年)

https://doi.org/10.6346/NPUST.2011.00107

摘要

本研究以廢棄蛋殼為吸附劑，吸附水溶液中的亞甲基藍，並探討初始濃度、粒徑、吸附時間、pH值、吸附劑量等對蛋殼影響亞甲基藍之吸附效果，期望以最佳條件提高蛋殼回收再利用之效益。

研究結果顯示，經由掃瞄式電子顯微鏡 (SEM) 顯示，吸附後在蛋殼外觀纖維結構層次的變化，細孔減少許多，在鍛燒蛋殼結晶中的孔隙均無很明顯變化。傅立葉轉換紅外線光譜儀 (FTIR) 分析圖譜顯示，吸附前後之蛋殼其官能基變化不大，在X射線繞射分析儀 (XRD) 鑑定結果，吸附前後經繞射其波峰相同，結構主要為方解石(CaCO3)，鍛燒蛋殼為 (CaO) 。蛋殼在吸附過程150分鐘內吸附達到平衡，初始濃度10 mg/L時，1 g蛋殼最佳吸附效果可達70 %吸附率，蛋殼經過篩影響吸附效果不大，蛋殼膜吸附效果最好可達80 %吸附率。處理亞甲基藍不同初始濃度時應適當調整蛋殼添加量，可以提高其的吸附效果。溫度升高有利於吸附，pH值、震盪速度對吸附效果影響不大。結論得知，蛋殼對染料廢水的吸附在短時間內則可達到吸附效果，具有良好應用前景。

關鍵字

蛋殼 ； 亞甲基藍 ； 吸附作用 ； 掃瞄式電子顯微鏡 ； X射線繞射分析儀

並列摘要

In this study, waste eggshell was used as an adsorbent for the treatment of methylene blue in dye solutions. The initial concentration, particle size, adsorption time, pH and the adsorption dosage using eggshell were investigated to find the best conditions for the improvement of eggshell recycling efficiency.The number of pores was reduced after adsorption observed by scanning electron microscopy (SEM). The calcined eggshell crystal showed no change in the pore size. Fourier transform infrared spectroscopy (FTIR) showed no functional groups changed before and after the adsorption. The X-ray diffraction (XRD) analysis of eggshells before and after adsorption remained the same as the calcite (CaCO3). The calcined eggshell is calcium oxide (CaO). The process of adsorption equilibrium was reached within 150 minutes. The absorption rate was up to 70 % using initial concentration of 10 mg / L and 1g of eggshell. Little effect of adsorption was showed through the sieved eggshell. The adsorption of eggshell membrane was up to 80% . The amount of eggshell should be adjusted based on different concentrations of MB. The adsorption temperature, pH, RPM has little effect on the adsorption rate. In conclusion, eggshell can be an effective method for the adsorption of MB.

並列關鍵字

Eggshell ； Methylene blue ； Adsorption ； scanning electron microscopy ； fourier transform infrared spectroscopy

參考文獻

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論文，國立成功大學環境工程學系，台南。

The use of egg shell membrane as an adsorbent for the treatment of