香蕉皮@金屬氧化物復(fù)合材料對亞硝酸根的吸附特征
發(fā)布時間：2018-12-17 02:30
【摘要】：利用香蕉皮~@氧化鋯(ZrBP)、香蕉皮~@氧化銅(CuBP)、香蕉皮~@氧化鎂(MgBP)和香蕉皮纖維素(BP)4種材料作為新型吸附劑對水體中亞硝酸根進(jìn)行吸附去除。試驗結(jié)果表明,當(dāng)pH值為2.0、吸附劑濃度為0.4g/L和反應(yīng)時間為90min,溫度為40℃時,ZrBP、CuBP、MgBP和BP等4種復(fù)合材料對2mg/L亞硝酸根的最大去除率分別為80.70%、72.40%、53.81%和47.52%。準(zhǔn)二級動力學(xué)方程能較好地擬合亞硝酸根在4種材料表面的吸附動力學(xué)試驗數(shù)據(jù),結(jié)果表明,控制材料表面吸附速率的因素比較復(fù)雜,既有液膜擴(kuò)散又有顆粒內(nèi)擴(kuò)散。熱力學(xué)數(shù)據(jù)表明,該吸附過程是一個自發(fā)的、吸熱的物理吸附過程,提高溫度有利于吸附反應(yīng)的進(jìn)行。
[Abstract]:Four kinds of materials, banana peel ~ @ zirconia (ZrBP), banana peel ~ @ copper oxide (CuBP), banana peel ~ @ magnesium oxide (MgBP) and banana peel cellulose (BP) were used as new adsorbents to remove nitrite from water. The results show that when the pH value is 2.0, the adsorbent concentration is 0.4g/L, the reaction time is 90 min, and the temperature is 40 鈩，
本文編號：2383496
[Abstract]:Four kinds of materials, banana peel ~ @ zirconia (ZrBP), banana peel ~ @ copper oxide (CuBP), banana peel ~ @ magnesium oxide (MgBP) and banana peel cellulose (BP) were used as new adsorbents to remove nitrite from water. The results show that when the pH value is 2.0, the adsorbent concentration is 0.4g/L, the reaction time is 90 min, and the temperature is 40 鈩，
本文編號：2383496
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