請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/54120
標題: | 利用奈米薄膜及活性碳吸附去除水中Trimethoprim、Sulfamethoxazole與Bisphenol-A Removal of Trimethoprim,Sulfamethoxazole and Bisphenol-A by Nanofiltration and Adsorption Processes |
作者: | Po-Chih Tseng 曾渤之 |
指導教授: | 蔣本基(Pen-Chi Chiang) |
關鍵字: | 奈米薄膜,活性碳吸附,藥物及個人衛生保健用品,內分泌干擾物,去除機制, Nanofiltration,Activated Carbon,Pharmaceuticals and Personal Care Products,Endocrine Disrupting Chemicals, |
出版年 : | 2015 |
學位: | 碩士 |
摘要: | 本研究使用不同程序的奈米薄膜結合活性碳去除個人衛生保健用品(PPCPs)或者內分泌干擾物質(EDCs)的效能研究。目標化合物分為三種類型:第一型為高分子量(接近薄膜MWCO);第二型為帶負電的物質;第三型為疏水中性物質。為了研究各單元內最適化的操作條件,兩單元將先分開實驗後,找出最佳的條件後再做結合,討論不同程序提高的效能差別。
本研究評估奈米薄膜在各種不同條件下去除效能的影響,膜孔徑小會顯著增加去除效率、減少出水通量;透膜壓力的增加會提高些許的去除率但對於某些物質會呈不規則的變化(增加、減少);掃流速度增加能提高些許去除率達成穩定。 本研究評估活性碳表面界達電位對於各目標化合物的吸附量的影響,在酸性下(pH<6)與偏鹼性(pH>8)下,除了疏水中性物質的吸附量沒有變化外,其餘兩種類型的目標化合物會有極大的改變,為結合薄膜的操作條件及現實水體,本研究採用將pH值控制在8左右。 不同活性碳與薄膜的結合程序具有不同的去除效能,不論在批次實驗或者連續操作的實驗,都能有效提高去除效果。根據薄膜對於水體中目標化合物的去除特性,薄膜結合活性碳為更加良好的組合次序, 最高能將所有目標化合物有高達90%以上的去除效能。薄膜結合活性碳能有效的提高標化合物去除效率,對於微小分子量汙染物有著顯著的作用。 In this study, NF membrane combine with activated carbon were used to removal of PPCP/EDCs in different sequence and assessed the removal efficiency. The target compounds were classified into three types: Type 1 was hydrophilic neutral compounds; Type 2 was negatively charged compounds; Type 3 was hydrophobic neutral compounds. In order to investigate the optimized operation conditions for integrated system. The discussions were started in per unit process: NF and AC. This study investigated the rejection of target compounds by NF under different operational conditions. The decrease of membrane pore radius significantly increased the rejection but decreased the solvent flux. Rejection slightly increased as the transmembrane pressure increased but for some compounds exhibit not regular change (increase or decrease the rejection). The rejection of target compounds slightly increased as cross-flow velocity increased. The zeta potential of activated carbon affected the adsorption capacity of target compounds by AC. At acid or base condition, the adsorption capacity of hydrophobic neutral compound did not change. The others types had great change of adsorption capacity. In order to combine with membrane process and real water body. This study controlled pH around 8 for elevation of removal efficiency. Different sequence of the combination of AC and NF has different removal efficiency. Both in batch and continuous operation experiments, NF combined with AC have great performance and have the higher rejection than only single process. According to the property of membrane for removal of target compounds, NF/AC were the better combination, the removal efficiency can reach more than 90 % for all compounds. This study investigated that NF combined with AC were effectively increased the removal of micro-pollutants. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/54120 |
全文授權: | 有償授權 |
顯示於系所單位: | 環境工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-104-1.pdf 目前未授權公開取用 | 4.68 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。