陳志宇, 張玉玲, 司超群, 初文磊, 陳在星, 馮凱婕
(吉林大學 環境與資源學院, 水資源與環境研究所, 長春 130021)

1.1 儀器、 材料和試劑 722型紫外可見光分光光度計(上海洪紀儀器設備有限公司); SPX-250-D型全溫振蕩培養箱(上海博迅實業有限公司). 火山渣采自東北地區某廠火山巖礦區, 經自然風干、 去雜質后, 過0.5~2 mm篩備用. 所用Na2SO4,CaCl2,MgCl2,NaCl,NaNO3,HCl,NaOH等無機試劑均為國產分析純試劑.


1.4 影響因素實驗



圖1 吸附量與時間的關系Fig.1 Relationship between adsorption amount and time

對吸附過程進行上述兩種吸附動力學方程擬合, 結果如圖2所示. 由圖2可見, 準二級擬合方程R2=0.987 5, 擬合效果更好, 吸附過程符合準二級動力學模型. 表明吸附過程受化學吸附機理控制, 涉及吸附劑與吸附質之間的電子共用或電子轉移.

圖2 吸附動力學的擬合結果Fig.2 Fitting results of adsorption kinetics


圖3 不同初始質量濃度吸附量與時間的關系Fig.3 Relationship between adsorption amount and time of different initial mass concentrations



圖4 pH值與吸附量的關系Fig.4 Relationship between pH and adsorption amount

圖5 不同水化學離子對火山渣吸附的影響Fig.5 Effects of different hydrochemical ions on adsorption of S by scoria
綜上, 本文可得如下結論:

3) 火山渣可有效去除低溫水體中的硫酸鹽, 是經濟、 有效、 生態安全型的天然硅酸鹽礦物材料.
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