共查询到16条相似文献,搜索用时 78 毫秒
1.
2.
3.
4.
微波辐射棉秆制备优质活性炭研究 总被引:15,自引:1,他引:15
研究了以棉秆废料为原料,采用微波辐射氯化锌法制备活性炭的可行性,探讨了微波功率、活化时间及氯化锌浓度对产品活性炭各项指标的影响。得到了微波辐射氯化锌法制备活性炭的最佳工艺:微波功率560W、活化时间6min、氯化锌浓度50%。用此工艺条件制得的活性炭碘吸附值:1030.2mg/g、亚甲基蓝脱色力180mL/g、得率36.82%。工艺所需活化时间为传统方法的1/36,产品活性炭吸附性能超过了国家一级标准。该工艺方法为农村棉秆资源的综合开发利用找到了新的途径。 相似文献
5.
6.
7.
8.
9.
目的是研究金银花黄色素的最佳提取工艺条件。采用正交试验法,以提取剂与原料用量比(A)、提取时间(B)、微波功率(C)和提取次数(D)4个因素,每个因素选取3个水平进行实验,提取次数与微波功率对提取有极显著影响。其最佳工艺条件为:提取剂为无水乙醇,提取剂与原料用量比为1:50(g/ml),提取时间为50s,微波功率为700W,提取次数为3次。 相似文献
10.
池州野生珍珠菜中Zn、Se含量的研究 总被引:1,自引:0,他引:1
利用微波消解原子吸收分光光度法测定了国家生态经济示范区安徽省池州市的野生珍珠菜中Zn、Se的含量,并与该地区茶叶中Zn、Se的含量进行了比较。结果表明:野生珍珠菜对Zn、Se均有富集作用,特别是Se的含量优于茶叶中Se的含量,具有良好的应用开发前景。 相似文献
11.
垃圾微波裂解及资源化利用技术 总被引:1,自引:0,他引:1
概述了我国城市垃圾处理现状,介绍了国内外现有城市垃圾处理技术,对各种垃圾处理工艺进行了简要评述;并介绍了一种先进的垃圾微波裂解及资源化利用技术,分析了该技术的特点、先进性和经济性等。 相似文献
12.
13.
B. J. Blanchmd J. W. Rouse T. J. Schmugge 《Journal of the American Water Resources Association》1975,11(5):892-907
ABSTRACT: The average microwave temperature of the watershed surface as detected by an airborne Passive Microwave Imaging Scanner (PMIS) was compared with the measured Soil Conservation Service (SCS) watershed storm runoff coefficient (CN). Previous laboratory work suggested that microwave response to the watershed surface is influenced by some of the same surface characteristics that affect runoff, i.e., soil moisture, surface roughness, vegetative cover, and soil texture. In order to field test and develop relations between runoff potentfal and microwave response, several highly instrumented watersheds of approximately 1.5 to 17 km2 were scanned under wet- and dry-soil conditions in April and June 1973. The polarized (horizontal and vertical) scans at 2.8 cm wavelength provided the data base from which other values were calculated. The best relationship between runoff coefficients (CN) and PMIS temperatures was observed when horizontally polarized temperatures from the near-dormant, early-growing season flight were used. Lower SCS runoff coefficients seem to be correlated with the cross-polarized response under dry watershed conditions late in the growing season and the difference in horizontal polarized response between wet conditions early in the growing season and dry conditions late in the growing season. To apply the results, the relationships need to be verified further. 相似文献
14.
15.