改性仿生脂肪细胞制备及其对水体中林丹的去除

Bionics Fat Cell Modification and Its Application to Removal of Lindane from Aqueous Solution

对第一代合成的线性仿生脂肪细胞进行改性,将其线性结构改变为网状结构以达到较为理想的再生效果,并对其结构进行了初步表征.改性仿生脂肪细胞同样具有亲水性的膜以及亲脂性的内部结构,亲水性的膜允许携带有机物的水体穿过膜,亲脂性内含物将疏水性有机物富集截留;改性仿生脂肪细胞与粉末活性炭具有相当的林丹去除能力,对7 mg.L-1林丹去除率均可达到97%;改性仿生脂肪细胞对林丹的去除机理包括内含物的生物富集以及膜上空腔的物理吸附两部分,而内含物的生物富集作用则是主要作用方式;改性仿生脂肪细胞较线性仿生脂肪细胞再生性能更好.

Fat tissue of organism can accumulate hydrophobic chemicals and the accumulation level is positively related to the quantity of fat. In this research, bionics fat cell （BFC） is modified from linear structure to netty structure in order to improve its regeneration ability, and the relative characteristics of modified BFC are also tested. Modified BFC also has the hydrophobic core and hydrophilic mem-brane structure similar with BFC. Water with the hydrophobic chemicals can pass through the hy-drophilic membrane of BFC into the interior, and then the hydrophobic chemicals are accumulated by hydrophobic core-triolein. Modified BFC is of good lindane removal ability close to powder active carbon （PAC） ,and both of them can remove 97% of the 7 mg·L^-l lindane from aqueous solution. Modified BFC is possible of two kinds of lindane removal mechanisms including bioaccumulation of core material and physical adsorption of membrane＇s hollows,and the bioaccumulation is the major adsorption way. Modified BFC has an obvious regeneration advantage over that of BFC.