搜索结果: 1-14 共查到“环境科学技术 Al”相关记录14条 . 查询时间(0.109 秒)
制备了铝离子柱撑蒙脱土负载铁离子的催化剂，采用XRD、H2-TPR、Py-IR、UV-vis光谱、ICP、N2吸附-脱附等多种分析方法，对催化剂的基础物理化学性质进行了系统地表征。在固定床微反应器内，对丙烯在该催化剂表面选择性还原NO的特性进行了研究，考察了柱撑Al3+与黏土比例以及焙烧温度对催化剂的物化性质以及脱硝效果的影响。结果表明：9Fe/Al-PILC样品具有较高的C3H6-SCR脱硝性能...
Fe/Si/Al分子印迹材料的制备及其对酸性橙II(AOII)的选择吸附性能
分子印迹 酸性橙II Al3+
2016/1/28
以Fe/Si凝胶作为基底,酸性橙Ⅱ(AOⅡ)为模板分子,引入Al3+形成Lewis酸识别位点,制备全无机型Fe/Si/Al分子印迹型材料(MIPs),通过SEM、XRD、BET、FT-IR等对其进行表征,并研究了其对AOⅡ的选择吸附性能.研究结果表明,与同具有苯环结构的干扰物双酚A(BPA)相比,MIPs对AOⅡ的吸附能力明显高于BPA,说明其对模板分子具有吸附选择性.此外,MIPs对AOⅡ的吸附...
表面活性剂对以污泥为铝源制得的纳米Al（OH）3性质的影响研究
表面活性剂 酸洗 污泥 资源化
2014/9/29
以污泥碳（SC）中回收的铝酸钠为铝源，在制备Al（OH）3的过程中加入表面活性剂PEG-1000（比例在0.01%~0.6%变化），考察其对Al（OH）3表面形貌和结构的影响.研究发现，当加入PEG-1000比例较小时，其空间位阻作用抑制了粒子之间的键合作用，使得Al（OH）3的沉淀效率较高、粒子尺寸较小，也能有效地阻止颗粒的团聚，SBET可以达到340 m2·g-1以上.当PEG-1000加入比...
Mg/Al水滑石对铜绿微囊藻的去除性能
水滑石 铜绿微囊藻 吸附
2014/9/30
目前用于除藻的黏土矿物表面带负电荷，需通过改性提高黏土矿物的除藻能力，而改性材料会导致成本增加、产生二次污染等，因此研究了直接用表面带正电荷的黏土矿物进行除藻的可行性。通过共沉淀法制备Mg/Al 水滑石，并用其进行去除铜绿微囊藻的实验研究，探究了吸附剂用量、搅拌时间、铜绿微囊藻初始浓度以及pH 值对Mg/Al 水滑石去除铜绿微囊藻的影响。结果表明，吸附剂用量为1 g/L、搅拌1.5 h、pH=6~...
Seasonal Influence on the Ambient Air Quality in Al Jahra City for Year 2010
Pollutants Al Jahra Seasonal Changes Monitoring Station
2013/3/12
Eight primary criteria air contaminants were measured continuously for the year 2010 to evaluate ambient air quality in Al Jahra, which is one of the oldest and busiest cities in the state of Kuwait. ...
采用浸渍、强化水解和后续水浴加热的方法制得催化剂Fe-Al/Al2O3,并通过XRD和XPS等表征手段对其结构性能进行了研究.结果表明,催化剂中铁是以二价和三价存在,且以三价铁为主;铝则以Al2O3和AlOOH形态存在.与单独臭氧化相比,Fe-Al/Al2O3既能高效矿化水中的难降解有机物2,4-二氯苯氧乙酸(2,4-D),又能明显抑制溴酸盐的生成,体现出很好的循环使用稳定性.进一步探讨了臭氧投加...
Assessment of Gaseous and Particulate Pollutants in the Ambient Air in Al Mirfa City, United Arab Emirates
Ambient Air Quality Monitoring Seasonal Variations Sandstorm
2013/3/11
From 2007-2009, National Energy and Water Research Center (NEWRC) on behalf of Abu Dhabi Water and Electricity Authority (ADWEA) conducted a long term baseline study of nitrogen dioxide (NO2), carbon ...
Perils of correlating CUSUM-transformed variables to infer ecological relationships (Breton et al. 2006; Glibert 2010)
Perils of correlating CUSUM-transformed variables to infer ecological relationships (Breton et al. 2006 Glibert 2010)
2014/4/4
We comment on a nonstandard statistical treatment of time-series data first published by Breton et al. (2006) in Limnology and Oceanography and, more recently, used by Glibert (2010) inReviews in Fish...
Rejoinder to ‘‘Perils of correlating CUSUM-transformed variables to infer ecological relationships (Breton et al. 2006; Glibert 2010)’’
Rejoinder Perils of correlating CUSUM-transformed variables infer ecological relationships Breton et al. 2006 Glibert 2010
2014/4/4
In their comment, Cloern et al. (2011) develop theoretical evidence that cumulative sum of variability (CUSUM)-transformed variables should not be used to lead to inferences due to the increase of aut...
Metal Corrosion of Al-Si-Cu Pattern Wafer Due to Chloride Ion Contaminants
Airborne molecular contaminants (AMCs) Chloride contamination Cleanroom micro-contamination HCl Pattern wafer Semiconductor device
2016/3/28
Chloride ions (Cl–) induce metal corrosion of integrated circuits and cause wafer scrap events in the clean room
environment. In this study, Al-Si-Cu pattern wafers were designed to monitor critical ...
Cr(Ⅵ)在Mg-Al型类水滑石上的脱附性能研究
类水滑石 双层金属氢氧化物 铬（Ⅵ） 脱附
2012/6/20
研究了Cr(Ⅵ)在带结构正电荷的Mg-Al型类水滑石(HTlc)上的脱附性质，考察了多种脱附剂的脱附性能，研究了脱附剂种类、浓度、pH值和脱附时间等因素的影响。实验表明，脱附平衡时间比吸附平衡时间稍长，不同的脱附剂脱附效果不一样，对同一种脱附剂来说，随着脱附剂浓度的增大，脱附量增大；随着pH值的升高，脱附量总体呈上升趋势。
Associated Health Effects among Residences Near Jeleeb Al-Shuyoukh Landfill
Airborne microorganisms volatile organic compounds health landfill
2010/12/22
Problem statement: There is growing concern about landfill adverse health effects from exposure to landfill emissions. Approach: Airborne dust samples from houses near Jeleeb Al-Shuyoukh landfill and ...
Prediction of Sulfur Dioxide (SO2) Concentration Levels from the Mina Al-Fahal Refinery in Oman Using Artificial Neural Networks
Air pollution ANN SO models refinery Sultanate of Oman
2009/1/6
In this investigation, two Artificial Neural Network (ANN) models were applied for predicting ground-level sulfur dioxide (SO2) in the Sultanate of Oman in order to provide an early warning advisory f...
以正硅酸乙酯（TEOS）、二乙氧基二甲基硅烷（DEDMS）、γ-氨丙基二乙氧基甲基硅烷（APDES）这3种硅烷偶联剂为硅源，合成了新型的有机硅铝复合絮凝剂，利用Al-Ferron逐时络合比色法研究了这3种絮凝剂的铝形态分布.结果表明，3种系列有机硅铝复合絮凝剂中，硅源、碱化度(B)、Si/Al摩尔比对铝形态分布都有影响.其中，碱化度对铝形态的影响较大.3种产品表现出类似的变化趋势，随碱化度的...