以茭白筍殼製備生物炭應用於水中偶氮染料之去除

Using Water Bamboo Husks for Preparing Biochar to Remove Acid Orange 7 (AO7) from Water

10.6499/JSGR.202312_8(2).0003

馮郁筑(Yu-Chu Feng)；陳宏庠(Hung-Hsiang Chen)；楊智其(Chih-Chi Yang)；蔡勇斌(Yung-Pin Tsai)；郭明裕(Ming-Yu Kuo)；廖宜塘(Yi-Tang Liao)；張育禎(Yu-Chen Chang)；陳谷汎(Ku-Fan Chen)

茭白筍殼 ； 生物炭 ； 偶氮染料酸性橙 ； 吸附 ； water bamboo husk ； biochar ； acid orange 7 ； adsorption

土壤及地下水污染整治

8卷2期（2023 / 12 / 01）

95 - 107

繁體中文;英文

本研究以農業剩餘資材茭白筍殼為原料，製備了不同碳化溫度500、600、700°C的茭白筍殼生物炭（water bamboo husk biochar, WBC），分別為WBC_(500°C)、WBC_(600°C)與WBC_(700°C)。研究生物炭對有機污染物偶氮染料酸性橙（acid orange 7, AO7）的吸附性能、作用機制及影響因素，比較其吸附量差異。在500、600、700°C碳化條件下，所製備的生物炭具有良好的孔隙結構。批次試驗結果顯示，WBC_(600°C)茭白筍殼生物炭對AO7具有良好的吸附能力，符合擬二階動力模式，屬化學吸附。等溫吸附模式模擬結果顯示，茭白筍殼生物炭對AO7的吸附符合Langmuir等溫吸附模式，屬單層吸附，最大吸附量為39.22 mg/g。R_L值為0.25，顯示此吸附作用為有利吸附。本研究成果，可提供未來茭白筍殼再利用及其應用於水質淨化之參考。

In this study, biochar (water bamboo husk biochar 500°C [WBC_(500°C)], WBC_(600°C), and WBC_(700°C)) was prepared from an agricultural residue, water bamboo husk, at different temperatures of 500, 600, and 700°C. The adsorption performance, mechanisms, and effects of biochar on the organic pollutant acid orange 7 (AO7) were studied, and the differences in adsorption capacity were compared. Biochar prepared under carbonization conditions of 500, 600, and 700°C exhibited good porous structures. Batch experiments showed that water bamboo husk biochar prepared at 600°C (WBC_(600°C)) had good adsorption performance for AO7. The adsorption of AO7 by WBC_(600°C) fitted well with second-order kinetic models. Isothermal adsorption modeling results showed that the adsorption of AO7 by WBC_(600°C) followed the Langmuir isotherm, with a maximum adsorption capacity of 39.22 mg/g. The R_L value was 0.25, which indicated favorable adsorption. Chemisorption and monolayer adsorption dominated the elimination of AO7 from water. The results of this study will be helpful to the reuse of water bamboo husk and its application for water purification in the future.