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以污泥厂剩余活性污泥作为原料,采用KOH为活化剂制备污泥活性炭,探讨了活化温度及时间、热解温度、洗涤温度及方式在污泥活性炭制备过程中的最佳工艺条件。以品红吸附量及产率作为污泥活性炭的考察指标,采用单因素实验筛选出了制备污泥活性炭的最佳工艺条件,并对污泥活性炭脱硫剂的脱硫性能进行了实验研究。实验研究结果显示,烟气中O2、水蒸气含量的多少及脱硫温度的高低会影响污泥活性炭脱硫剂的脱硫性能。 相似文献
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化学活化法制备麻疯树果壳活性炭的实验研究 总被引:1,自引:0,他引:1
以麻疯树果壳为原料,KOH为活化剂,通过化学活化法制备活性炭。考察了反应温度、反应时间和碱炭比(KOH与麻疯树果壳炭化料的质量比)等因素对活化结果的影响,并利用N2吸附和BET等现代分析测试方法来表征活性炭的结构特征。结果表明,化学活化法制备的活性炭吸附剂性能较好,且当活化温度为850℃,活化时间为240min,碱炭比R=4时制得活性炭产品的质量最好;化学活化法制备的活性炭为微孔吸附剂,在最佳条件下得到最大的碘吸附值和比表面积分别为2218.44mg/g和1890m^2/g。 相似文献
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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
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水蒸气活化烟杆制造活性炭及孔结构表征 总被引:3,自引:0,他引:3
以烟杆为原料,以水蒸气为活化剂,采用正交实验研究了水蒸气流量、活化时间和活化温度对活性炭得率和吸附性能的影响,最佳工艺条件为活化温度900℃,时间为30分钟,水蒸气流量3.09mL/min,在此条件下制得活性炭产品的碘吸附值为946.52mg/g,亚甲基蓝吸附值为21mL/0,1g,得率为32.64%。同时测定了该活性炭的氮吸附等温线,并通过BET、H-K方程、D-A方程和密度函数理论(DFT)表征了活性炭的孔结构。结果表明:该活性炭为微孔孔型,BET比表面积为1044m^2/g,总孔体积为0.5870mL/g,微孔体积占总孔体积的72.03%,中孔占26.92%。大孔占1.05%。 相似文献
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活性半焦(炭)脱硫性能影响因素的研究 总被引:2,自引:0,他引:2
在不同炭化条件(炭化温度、炭化时间)和活化条件(活化温度、活化时间以及水蒸汽流量)下制取活性半焦。用碘吸附值和硫容表征了活性半焦的微孔结构及其脱硫能力,考察了制备条件对活性半焦微孔及其脱硫能力的影响。并探讨了脱硫能力与活性半焦微孔之间的关系。 相似文献
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本实验以粘胶基活性炭纤维和酚醛树脂复合,制备出了一种可用于烟气脱硫的活性炭纤维复合材料(ACFM),考察了制备工艺条件对脱硫性能和比表面积的影响,测试其在填充床的压降。结果表明:粘结剂用量、炭化及活化条件对样品的脱硫性能和比表面积有较大的影响;与其他活性炭材料相比ACFM压降相对较低,只有活性炭纤维的1/20。 相似文献
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城镇化是推动我国经济社会发展的重要动力,在高速发展的同时,带来大量污染排放,威胁乡村环境质量与可持续发展。在对乡村生态环境问题剖析的基础上,从战略、实施、方式等层面探索解决思路,围绕科学规划、发展方式、基础建设、管理机制、宣传教育等方面分析关键点,加强乡村环境保护,保障城镇化建设健康发展,为促进农村农业持续发展提供持久动力。 相似文献
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Trametes versicolor decolorized 2000 mg L(-1) of the mono-azo substituted naphthalenic dye Amaranth with no dye sorption observed visually. The changes in the toxicity were assessed over a period of 30 d for the dye-treated viable culture, control (no dye added), and a boiled culture treated with dye, using the Microtox Acute Toxicity assay. Before dye addition, the culture filtrate had some toxicity, which increased after the dye addition. The toxicity of the dye-treated culture decreased during the treatment. The loss of toxicity occurred at the same time, with the loss of color suggesting that detoxification is associated with decoloration. The change in pH was due to natural metabolic processes and had a small effect on detoxification. Because the toxicity of the treatment was similar to that of the control at the end of the treatment, the effluent seems to be safe for release into the environment, potentially rendering this treatment suitable for industrial application. 相似文献
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泵站树状给水管网流量具有随机性,而这种随机性变化会直接影响管网的建设费用和动力费用.针对这-特点,应用随机规划原理,建立泵站树状给水管网机会约束模型,编写基于随机模拟的遗传算法程序求解该模型.机会约束模型能较客观地反映该管网的实际工况,使优化设计结果更符合实际. 相似文献
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Günay Kocasoy 《Environmental management》1989,13(4):469-475
The increase in the number of tourists visiting a coast is desired by most of the countries for economic reasons. However, this increase in tourism may cause pollution of the sea. This can be only avoided by proper planning and by predicting the carrying capacity of the coast in terms of sea pollution. This is especially important for developing countries where part of the wastewater is discharged without any treatment into the sea.In the present study the beaches were classified according to their use — and consequently the amount of waste discharged into the sea — into four groups: (1) coasts that are used only for swimming and recreational purposes; (2) coasts used simultaneously for dwelling, swimming, and recreational purposes; (3) coasts along which only dwellings exist; and (4) natural and man-made harbors, i.e., coasts used as shelters. During the survey,40,320 observations were made between December 1985 and February 1988 to determine the effect of the number of tourists on seawater quality. The results obtained were analyzed by a multilinear regression program to obtain an empirical equation giving the extent of the sea pollution in terms of coliform concentration as a function of population density and some other environmental factors.The equations derived in this study enable the determination of the carrying capacity of a beach in terms of pollution as well as the expected degree of pollution corresponding to a given population density. Furthermore, it allows the prediction of the extra carrying capacity that can be obtained by improving the waste-disposal conditions. 相似文献
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阐释了信息产业专门化街区的内涵,结合对合肥市黄山路信息产业专门化街区构成要素的分类及其邻近度的分析,分别从空间结构演化、景观演化、功能演化三方面阐述了合肥市黄山路由"电子一条街"向"信息产业专门化街区"的总体演化阶段,探讨了信息产业专门化街区的未来发展趋势。 相似文献
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