气相色谱法测定煤气化废水中的酚类化合物

复杂废水中的一元,二元及多元酚类化合物通过与醋酸酐反应生成相应的醋酸酯类衍生物,用乙醚从水相中萃取出来可直接进行气相色谱或色谱-质谱分析。本工作通过正交设计选择了最佳衍生化条件,各种酚的衍生化收率大于93%。从煤气化废水中分析鉴定出38种一元酚和14种二元酚类化合物,并进行了定量测定。     

稀土钙钛矿型催化剂对吡啶的脱臭作用

本文研究的四种不含贵金属的稀土钙钛矿型催化剂(DyCoO3、LaCoO3、DyMnO3、GdCoO3),对吡啶的催化脱臭效果很好。在温度为573—623K、空速为20,000h-1的条件下,可以将浓度少于0.1%的吡啶样气完全氧化而达到消除吡啶之目的,转化率达到100%。氧化产物中的NO2与NO总量(用NOx表示)也同时消除60%左右,符合排剂要求。对DyCoO3和LaCoO3进行了200h的寿命实验,证实催化剂稳定性很好。     

Nitrogen removal performance and bacterial communities in zeolite trickling filter under different influent C/N ratios

Environmental Science and Pollution Research - In this study, the degradation performance of nutrients in zeolite trickling filter (ZTF) with different influent C/N ratios and aeration conditions...     

Authentication of emission monitoring data and optimization of desulfurization in the molybdenum roasting process based on BAT-OOPN and the response surface method

Environmental Science and Pollution Research - This paper presents a quantitative pollutant discharge model for a typical molybdenum roasting plant, which combines the best available technology and...     

Geochemistry of heavy metal-contaminated sediments from the Four River inlets of Dongting lake,China

Environmental Science and Pollution Research - The concentrations of major and trace elements in the sediments from the Four River inlets of Dongting Lake were analysed. The results show that the...     

Synthesis of efficient Y-Bi2WO6/G visible light photocatalysts with high stability for pollutant degradation

Environmental Science and Pollution Research - For effective photocatalytic pollutant degradation on bismuth tungstate (Bi2WO6), it is vital to enhance the photogenerated charge separation and the...     

Effect of Environmental Regulation on High-quality Economic Development in China—An Empirical Analysis Based on Dynamic Spatial Durbin Model

Environmental Science and Pollution Research - In 2017, the 19th National Congress of the Communist Party of China put forward the concept of high-quality economic development, indicating that the...     

A review on fabricating functional materials by heavy metal–containing sludges

Environmental Science and Pollution Research - With the development of industry, sustainable use of natural resources has become a worldwide hot topic. Heavy metal–containing sludge (HMS) is...     

Exploring soil erosion trajectories and their divergent responses to driving factors: a model-based contrasting study in highly eroded mountain areas

Environmental Science and Pollution Research - Soil erosion threatens environmental sustainability worldwide. Exploring the trajectories of soil erosion and associated drivers is of great...     

某采油厂新建产能建设项目(地面工程)职业病危害预评价

对某采油厂新建产能建设项目(地面工程)可能产生的职业病危害因素进行了识别与预评价,从职业病防治角度评估了建设项目的可行性,提出了必要的职业病危害防护对策和建议。