Volume 2,Issue 9
沼液改性小球藻强化Cd2+的生物吸附性能研究
为了探究微藻废水培养对微藻吸附重金属离子的影响，首先利用傅里叶红外光谱仪（FTIR）对比分析BG-11培养基和沼液培养收获的小球藻（Chlorella vulgaris）生物组分差异，然后再开展不同培养组小球藻对Cd2+的吸附动力学研究。结果表明，沼液对小球藻有较理想的培养效果；两组小球藻均能够为重金属的生物吸附提供关键的官能团；基于官能团谱峰强度的差异，在达到吸附平衡时两组小球藻表现出差异的Cd2+吸附率，其中沼液组吸附率为96 %，BG-11培养基组吸附率仅为78 %；利用动力学模型模拟可知小球藻吸附Cd2+过程中影响吸附速率的主要因素是化学吸附。总之沼液培养带来的小球藻生物组分改变，提高小球藻的Cd2+生物吸附能力。
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