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凹凸棒泡腾消毒片制备工艺研究
王学军1,2, 蔺兴遥1
1.甘肃中医学院;2.西北大学 生命科学学院,西部资源生物与现代生物技术省部共建教育部重点实验室
摘要:
【目的】制备凹凸棒泡腾消毒片并对其工艺条件进行优化,为提高农村窖水的净化效率提供参考。【方法】采用正交试验方法,以pH值、崩解时限、漂浮时间作为评价指标,对凹凸棒泡腾消毒片中柠檬酸与碳酸氢钠的质量配比、酸碱总量(质量分数)和聚乙二醇6000的用法进行优化;并对最佳工艺条件下制备的消毒片的品质进行了考察,对其水质净化效果进行了检测。【结果】确定的泡腾消毒片的制备工艺为:柠檬酸和碳酸氢钠最佳质量配比为0.6∶1,柠檬酸和碳酸氢钠总量为30%,采用5%聚乙二醇包裹碳酸氢钠;并以此工艺制成泡腾消毒片,经检测,其pH为6.16,崩解时限和漂浮时间分别为(130±3.8)和(315±3.5) s,室温下放置0和 30 d时的平均径向硬度分别为 60 和 58 N,最大发泡量为(7.0±0.5) mL;稳定性试验结果显示,在室温下放置0~360 d,泡腾消毒片的各项指标均无显著差异;对取自甘肃省会宁县“母亲水窖”的窖水进行净化,结果显示,pH由8.40降低为7.10,色度、浑浊度分别由14.6度和11.2度降低为11.2度和8.2度,总硬度由390 mg/L降为372 mg/L,细菌总数由1.23×105 L-1降至9.1×104 L-1,大肠菌群、粪大肠菌群数分别由15和10 L-1降为未检出。【结论】得到了凹凸棒泡腾消毒片的最佳制备工艺,且该工艺稳定、可靠;在此工艺下制得的消毒片对窖水水质有较好的净化效果。
关键词:  凹凸棒泡腾消毒片  正交设计  水质净化
DOI:
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基金项目:甘肃省兰州市科技局项目(06-2-84);甘肃省科技厅农业成果转化资金计划项目(LZNY2007-451)
Study of preparation technology of Attapulgite Effervesce Sterilization Tablets
Abstract:
【Objective】The study was to prepare Attapulgite Effervesce Sterilization Tablets and to optimize its preparative technique.【Method】Taking the pH value,disintegration time limited and floatation time as index,the proper proportion between citric acid and sodium bicarbonate,as well as the total amount of citric acid sodium bicarbonate and the using method of polyethylene glycol 6000 in the effervescent tablet were optimized by using orthogonal design,and qualitative properties of Sterilization Tablets made by optimal technique conditions were also investigated.【Result】The optimal preparative technique is the proportion of 0.6∶1 with citric acid and sodium bicarbonate,30% of the acid base in total amount and sodium bicarbonate encapsulated by 5% polyethylene glycol 6 000;in addition,Attapulgite Effervesce Sterilization Tablets were made by using the preparative technique,its pH,disintegration time limited,floatation time and maximum foaming volume are 6.16,(130±3.8) s,(315±3.5) s,(7.0±0.5) mL respectively by detection.Average radial stiffness is 60 and 58 N respectively after being placed for 0 and 30 days at room temperature.Stability experimental results show that every index of Attapulgite Effervesce Sterilization Tablets has no significant deviation.After Gansu Province Huining County’s cellar water is purified,results display that its pH is cut down from 8.40 to 7.10,chromaticity and turbidity being cut down from 14.6 and 11.2 degree to 11.2 and 8.2 degree,total hardness being degraded from 390 mg/L to 372 mg/L,total numbers of bacteria being stepped down from 1.23×105 to 9.1×104 per liter,coliform and faecal coliform group being not found.【Conclusion】The optimal preparative technique of Attapulgite Effervesce Sterilization Tablets is obtained;the preparative technique is stable,reliable and suitable for practical use;Attapulgite Effervesce Sterilization Tablets can be made by the technique,which have good purification to cellar water.
Key words:  Attapulgite Effervesce Sterilization Tablets  orthogonal design  water purification