摘要
本文研究了藻类在硅溶胶中的生长与pH、SiO_浓度和胶粒粒径的关系.在所试条件下,发现当pH=8.3,SiO_2浓度≤30％和Ds≥23nm时,最有利于藻的生长,且其生长速度最快.为防止硅溶胶中藻的生长,本文又筛选了若干灭藻剂,对其灭藻效果作了研究.当采用15—20ppm的甲醛;100—200ppm乙二醇;50—100ppm邻羟基苯甲醛;50—100ppm乙二醛时,可有效地灭藻或抑制藻的生长.
Tn the present paper, the relationship of the growth of algae in colloidal silica with pH, concentration and particle size of SiO_2has been studied.Tt was found that at pH8.3, SiO_2conccntration< 30%and Ds>23nm were the optimumconditions for the most rapid growth of algac.To prevent the growth of algae in colloidal silica,we have found several algaccidcs and studied their effectiveness.They arc 15—20ppm formaldehyde; 100—200ppm cthylcnc glycol; 50—100 salicylaldchydc and 50—100ppm glyoxal.Thcsc compounds effectively kill the algae or stop their growth.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1989年第3期92-77,共1页
Journal of Nanjing University（Natural Science）
基金
高等学校科学基金
关键词
硅溶胶
藻
来藻剂
colloidal silica
algae
Algaecide
