工业水处理
工業水處理
공업수처리
INDUSTRIAL WATER TREATMENT
2015年
6期
35-37,38
,共4页
淀粉/二氧化硅复合微球%重金属离子%吸附
澱粉/二氧化硅複閤微毬%重金屬離子%吸附
정분/이양화규복합미구%중금속리자%흡부
starch/silica composited microspheres%heavy metal ions%adsorption
利用土豆淀粉、玉米淀粉、正硅酸乙酯为原料,氨水为催化剂,通过溶胶-凝胶法制备了淀粉/二氧化硅复合微球,研究了该复合微球对水中铅离子的吸附性能。结果表明,在弱碱性条件下,淀粉/二氧化硅复合微球对水中铅离子表现出良好的吸附性能,其对铅离子的吸附行为符合Langmuir模型和Freundlich模型,对铅离子的饱和吸附量为31.34 mg/g。动力学研究表明,淀粉/二氧化硅复合微球对铅离子的吸附符合拟二级动力学模型,在淀粉/二氧化硅复合微球的活性点上的化学反应为吸附控制步骤。
利用土豆澱粉、玉米澱粉、正硅痠乙酯為原料,氨水為催化劑,通過溶膠-凝膠法製備瞭澱粉/二氧化硅複閤微毬,研究瞭該複閤微毬對水中鉛離子的吸附性能。結果錶明,在弱堿性條件下,澱粉/二氧化硅複閤微毬對水中鉛離子錶現齣良好的吸附性能,其對鉛離子的吸附行為符閤Langmuir模型和Freundlich模型,對鉛離子的飽和吸附量為31.34 mg/g。動力學研究錶明,澱粉/二氧化硅複閤微毬對鉛離子的吸附符閤擬二級動力學模型,在澱粉/二氧化硅複閤微毬的活性點上的化學反應為吸附控製步驟。
이용토두정분、옥미정분、정규산을지위원료,안수위최화제,통과용효-응효법제비료정분/이양화규복합미구,연구료해복합미구대수중연리자적흡부성능。결과표명,재약감성조건하,정분/이양화규복합미구대수중연리자표현출량호적흡부성능,기대연리자적흡부행위부합Langmuir모형화Freundlich모형,대연리자적포화흡부량위31.34 mg/g。동역학연구표명,정분/이양화규복합미구대연리자적흡부부합의이급동역학모형,재정분/이양화규복합미구적활성점상적화학반응위흡부공제보취。
Starch/silica composite microspheres have been synthesized by sol-gel method using potato starch ,corn starch,and TEOS as raw materials,and ammonia water as catalyst. Its adsorption capacity for lead (Ⅱ) ions in water is studied. The results show that starch/silica composite microspheres have perfect adsorption capacity for lead (Ⅱ) ions in water under weak alkaline condition. Its adsorption behavior for lead (Ⅱ) ions complies with Langmuir model and Freundlich model. Its maximum adsorption capacity for lead ions is 31.34 mg/g. The kinetics research shows that the adsorption of starch/silica composite microspheres for lead (Ⅱ) ions is in line with pseudo second kinetic model. The chemical reaction on the activity site of starch/silica composite microspheres is adsorption control steps.