改性粉煤灰吸附废水中的铬

以粉煤灰为材料,研究改性粉煤灰吸附处理实验室模拟含铬废水的影响因素.结果表明：改性粉煤灰处理含六价铬废水最佳运行条件是：pH值8,吸附时间20min,原水水温,改性粉煤灰投加量为0.5g/100ml,六价铬去除率高达99.41％.     

铝-钛交联改性膨润土在处理废水中的应用研究

以钠基膨润土为原料,制备了铝钛交联改性膨润土,并应用于实验室废水的处理,考察了pH值,改性膨润土的用量和搅拌时间对废水的COD、浊度和色度去除率的影响。当pH=4,投加量为6g/L,搅拌时间为30 min时,COD最高去除率为50.90%;当pH=5,投加量为6 g/L,搅拌时间为30 min时,浊度的最高去除率为92.10%;当pH=3,投加量为6 g/L,搅拌时间为30 min时,色度的最高去除率为94.00%。     

改性粉煤灰负载壳聚糖处理高浊水的研究

利用改性粉煤灰负载壳聚糖处理高浊水,研究了质量比、搅拌时间、投加量和pH对除浊性能的影响。结果表明,当壳聚糖与改性粉煤灰质量比为0.1、搅拌时间为30 min、投加量为3 g/L、pH为7~8时,除浊效果最佳,除浊率高达98%。     

电Fenton法协同改性粉煤灰处理活性艳蓝废水

采用电Fenton法协同改性粉煤灰处理活性艳蓝KN—R废水。实验考察了Fe—c比，改性粉煤灰的投加量对处理效果的影响；并通过正交试验对H202投入量、pH值和搅拌时间进行了优化。结果表明：在100mL废水中加入铁刨花12g，活性碳量2g，改性粉煤灰5g，30％H202用量6mL，以及pH值为4和搅拌时间1h的条件下，处理效果最好，色度去除率达98％，COD去除率达87％，达到了国家污水排放一级标准。     

改性粉煤灰在抗生素废水脱色中的应用

用改性粉煤灰对抗生素废水进行脱色处理试验,考察了改性方法、粉煤灰投加量、pH值等因素对处理效果的影响。试验结果表明2mol/L硫酸改性粉煤灰的脱色效率最高,当pH值为6左右、投加量为20~30g/L时脱色效果最好,去除率为67.59%。并对改性粉煤灰与抗生素废水的作用机理进行了探讨。     

水性油墨废水混凝工艺的优化研究

采用混凝法对水性油墨废水进行处理,探讨了混凝剂种类及投加量、混凝最佳pH值、助凝剂种类及投加量等因素对混凝效果的影响。结果表明,当混凝剂硫酸亚铁投加量为200 mg/L,助凝剂聚丙烯酰胺投加量为2.5 mg/L,pH值为5,沉降时间为40 min时,处理后的废水色度去除率达97%以上,COD去除率达92%以上。     

十六烷基三甲基溴化铵改性粉煤灰吸附酸性大红染料

采用十六烷基三甲基溴化铵（HDTMA）对粉煤灰（FA）进行改性,并使用改性后粉煤灰（MFA）吸附酸性大红染料废水。考察了pH值,改性灰的投加量和搅拌时间对酸性大红脱色率的影响,确定了最佳的吸附条件：投加量为0.4 g/50 mL,pH值为2,搅拌时间为90 min。在此条件下,对50 mL浓度为50 mg/L模拟染料废水脱色率最高,可达98%。改性灰对酸性大红染料的吸附规律可用Langmuir吸附等温式描述。通过对粉煤灰和改性灰的比表面积和扫描电镜等表征测定分析可知,HDTMA的加入增大了粉煤灰的比表面积,从而提高吸附性能。     

酸改性粉煤灰对印染废水处理的实验研究

对原始粉煤灰进行了酸性改性,制备了酸改性粉煤灰,并用其对印染废水进行脱色处理。研究了粉煤灰及酸改性粉煤灰的投加量(质量浓度)、反应pH值、反应时间等因素对印染废水脱色效果的影响。实验结果表明:用原始粉煤灰对染料废水进行脱色处理,在粉煤灰投加量为50 g/L,反应时间为40 min,pH值为10的最佳反应条件下,脱色效率为63.45%。用盐酸改性粉煤灰对染料废水进行脱色处理,在酸改性粉煤灰投加量为25 g/L,反应时间为10 min,pH值为10时,最佳脱色效率达到88.73%。     

改性粉煤灰去除抗生素废水中色度的研究

用改性粉煤灰对抗生素废水进行脱色处理试验,考察了改性方法、粉煤灰投加量、pH值等因素对处理效果的影响。结果表明:2M硫酸改性粉煤灰的脱色效率最高,当pH值为6左右、投加量为20～30g/L时,脱色效果最好,去除率为67.59%,并对改性粉煤灰与抗生素废水的作用机理进行了初步探讨。     

改性粉煤灰对含镉废水处理的实验研究

在粉煤灰中加入钠盐进行改性,制备了改性粉煤灰,并用其对含镉废水进行处理。本文研究了改性粉煤灰的投加量、反应温度、反应时间、反应pH值等因素对含镉废水处理效果的影响。通过正交试验讨论各影响因素对含镉废水处理效果的影响,研究结果表明:改性粉煤灰投加量影响作用最大,其次是反应时间、反应pH值,最后是反应温度。最佳的反应条件是:改性粉煤灰的投加量是40 g/L、温度为25℃、时间为50 min,反应pH值为7。     

与强者同场竞技 靠创新促进发展——访青岛福润德塑料挤出技术有限公司总经理赵炳仁先生

一年一届的中国国际塑料橡胶工业展览会(国际橡塑展),是全球多个行业寻找橡塑工业世界性商贸伙伴的机遇,也是企业开拓中国以至亚洲市场商机之"金钥匙"。在25届国     

Hydrogels reinforced with nanoclays with improved response rate

Two series of semiinterpenetrating networks (SIPN) based on linear hydrophilic poly(vinyl alcohol) (PVA) and thermo‐responsive poly(N‐isopropylacrylamide) (PNIPA), physically crosslinked with inorganic clay, are presented. The hydrogels with different crosslinking densities were prepared by varying the content of clay from 1 to 6 wt % and contained linear interpenetrant, PVA in the range of 0.5–1.5 wt %. The effect of clay content on swelling/deswelling behavior and phase transition in PNIPA gels, as well as the feasibility of reinforcing the gels with high molecular weight PVA, were analyzed. The thermal response of hydrogels, followed by DSC, confirmed that the insertion of hydrophilic PVA did not have a significant effect on the onset of the volume phase transition temperature, while the response was faster. The equilibrium degree of swelling of SIPNs and PNIPA hydrogels was in the range of 9–79 and decreased with increasing content of clay. The internal morphology and surface wettability of the hydrogels were investigated by scanning electron microscope analysis and contact angle measurements, respectively. The network structural parameters of the PNIPA and SIPN nanocomposites hydrogels, such as the average molecular weight between crosslinks, M_c, and effective crosslinking density, N_e, were determined by dynamic mechanical analysis. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 44535.     

Electrodialysis with brine solutions oversaturated with calcium sulfate

Electrodialysis (ED) was applied to concentrate brine solutions of various concentrations — similar to effluentsfrom the desalination of brackish and industrial water — to about 20%. The consequent reduction in effluent volumes would facilitate a reduction in disposal costs. The energy requirement for concentrating solutions from 70 to 300 mN (0.4-1.8%) to 3.9 N (20%) was in the range 1.5-7.1 kWh/m³, in contrast to approximately 25 kWh/m³ by thermal evaporation. With the aim of preventing precipitation of CaSO4 on the membranes, laboratory-scale ED experiments were carried out on solutions of different compositions to determine the conditions that would lead to the precipitation of excess gypsum on gypsum seeds in a separate precipitator. The results were then applied in a pilot-scale ED unit in which the brine that circulated through the ED brine cells passed through a separate CaSO, precipitator containing gypsum seeds.     

Biological studies with cyclopropenoids inactivated with fatty acids

Cyclopropenoids inactivated by reactingSterculia foetida oil with cottonseed oil fatty acids were fed at three dietary levels to growing rats and laying hens for 4 weeks. At the termination of the experiments, all animals were autopsied and examined microscopically for pathological lesions, but no pathology that could be related to dietary treatment was observed. Hemoglobin, packed cell volume and plasma cholesterol were similar in animals fed all of the diets. Growth rate of rats and egg production of hens fed the experimental diets were similar to those of animals fed the control diet. After 3 and 6 months of storage, eggs from hens fed the inactivated cyclopropenoids were normal and showed no evidence of the unusual characteristics of cyclopropenoid feeding. Lipids of heart, liver and adipose tissues of all the rats and hens varied little from the normal fatty acid composition. Small amounts of three unidentified fatty acids were found in the adipose tissues of rats fed the higher levels of inactivated cyclopropenoids. The results of these feeding studies suggest that inactivation of cyclopropenoids with fatty acids eliminates the unusual biological effects attributable to cyclopropenoids. Presented at the AOCS Meeting, New Orleans, April 1970.     

以创新谋发展 以协作促转型

复合肥行业的转型升级已被列为化肥行业"十三五"规划重要内容。介绍我国复合肥行业转型发展期的特征,并提出在此形势下复合肥行业的发展思路;以创新谋发展,促进行业技术水平提高;以协作促转型,助推行业转型发展。     

PPH治疗混合痔的护理体会

目的探讨混合痔行PPH的护理方法。方法99例混合痔患者均行PPH,手术前向患者介绍住院环境、住院须知,告知治疗方法及护理上需要的配合,饮食、排便的注意事项,术前准备等;术后体位及恢复饮食时间,大小便情况观察及各种外用药的使用,出血护理及伤口护理,肛门功能锻炼;制定入院评估,印制出院指导。结果99例患者痔核明显回缩,顺利出院。结论混合痔PPH的术前术后护理对患者顺利康复有重要意义。     

Fabric impregnated with TiO2 gel with self-cleaning property

Cotton fabric decorated with TiO₂ synthesized by sol-gel approach was investigated as a self-cleaning material depending on the TiO₂ loading (1.5 wt% in the case of single layered fabric and 3 wt% in the case of double layered). The materials were investigated by SEM, EDX, XRD, FTIR, and photoactivity. The self-cleaning property was established by determining the amount of the coated dust, the elemental composition, the carbon content, the opacity, and the water contact angle. The self-cleaning property of the impregnated fabric was accentuated by TiO₂ loading. The dust deposited on the single layer fabric stored inside was 3.8 wt% lower than on the nonimpregnated fabric and that deposited on double layer fabric, respectively, was reduced by 9.1 wt%. The decrease in the deposited dust was more accentuated for the samples stored outside (4.2 wt% for the single layer fabric and 16 wt% for the double layer fabric, as compared with the nonimpregnated textile).     

高压电动机受潮现场处理的技术分析

山东铝业公司水泥厂（以下简称我厂）运行的大型高压电动机较多．有时由于长时间停运或者环境的潮湿，导致电动机的绝缘水平下降，致使电动机不能再次正常启动。因大型电动机是企业的关键设备，其运行好坏直接影响企业生产的正常与否，进而影响企业效益。     

OMC法煤气脱硫装置的操作经验

讨论了在ＯＭＣ法煤气脱硫工艺中,贫液碱度、贫液中盐类含量、脱硫剂ＯＭＣ浓度和ＯＭＣ质量等因素对煤气脱硫效率的影响,指出了提高脱硫效率的途径和降低消耗的经验。     

以创新铸就名牌 以名牌促进发展

介绍厦门正新橡胶工业有限公司在观念、产品、管理和技术方面开展创新活动的经验。观念创新是名牌战略的灵魂,相互理解与支持、创建伙伴关系是公司对外往来的原则,坚决实施名牌战略,坚持以人为本、适才适用的原则;产品创新是占领市场的法宝,根据市场需求不断适时开发新产品;管理创新是维护品牌形象的前提,各项试验均执行企业内控标准,严把产品质量关;技术创新是实施名牌战略的源泉,以自有技术开发各种轮胎。通过开展创新活动,公司利税指标一直位居国内前列。