摘要
以鱼糜漂洗废水为处理对象,采用zeta电位仪和扫描电镜,测得不同pH下,絮凝悬浮液的zeta电位值及絮凝沉淀物的表面结构,获得了三氯化铁与鱼糜漂洗废水中蛋白质的絮凝机理。结果表明:pH 3~5之间蛋白质失稳由压缩双电层机理和电中和机理起作用,pH 5~6之间蛋白质的脱稳絮凝主要取决于电中和机理,pH 6~8之间以吸附架桥为主要絮凝机理,且存在网捕卷扫作用,pH 9~10主要是生成Fe(OH)3沉淀的网捕卷扫作用实现了对蛋白质的絮凝。
The mechanism of flocculation was investigated by zeta potential of surimi waste-water and scanning electron microscope(SEM)images of flocs at different pH.Results showed that at pH 3-5,the mechanism of charge neutralization and double layer compression mainly lead to protein instability;at pH 5-6,protein was flocculated mainly by the mechanism of charge neutralization;at pH 6-8,the mechanism of flocculating mainly depends on adsorption bridging and sweep flocculation;at pH 9-10,sweep flocculation was the main mechanism of flocculating surimi waste-water with ferric chloride.
作者
宋美
娄永江
严小军
SONG Mei;LOU Yongjiang;YAN Xiaojun(School of Marine Science,Ningbo University,Ningbo 315211,China)
出处
《食品与生物技术学报》
CAS
CSCD
北大核心
2018年第8期875-879,共5页
Journal of Food Science and Biotechnology
基金
国家海洋局海洋公益性项目(201305013-3)
宁波市重大农业科研攻关项目(2014C10034)
关键词
三氯化铁
鱼糜漂洗废水
絮凝机理
ZETA电位
扫描电镜
ferric chloride
surimi waste-water
mechanism of flocculation
zeta potential
scanning electron microscope(SEM)
作者简介
通信作者:娄永江(1965—),男,浙江嵊州人,农学硕士,教授,硕士研究生导师,主要从事水产品加工研究。E-mail:louyongjiang@nbu.edu.cn。
