溶气气浮法处理炼油循环水排污水研究

为了确定混凝气浮法处理炼油循环水排污水的可行性,在几种常用混凝剂中通过试验选定无机混凝剂PAC,配合有机PAM使用,再通过正交试验确定混凝剂的最佳使用条件,在此条件下通过试验确定混凝沉淀法的效果,最后用混凝——气浮法处理炼油循环水旁滤反冲水,结果表明使用混凝——气浮法处理这种废水并回用可以满足要求且有明显优势。     

3号喷气燃料蒸馏残留量的测定探讨

根据茂名石化公司在3号喷气燃料蒸馏测定中遇到的实际情况，按照GB／T6536—1997的规定，就蒸馏残留量的大小与最后加热强度之间的关系进行探讨，得出了3号喷气燃料残留量随后加热强度的增大而减少。     

Organic residue analysis of Egyptian votive mummies and their research potential

Vast numbers of votive mummies were produced in Egypt during the Late Pharaonic, Ptolemaic, and Roman periods. Although millions remain in situ, many were removed and have ultimately entered museum collections around the world. There they have often languished as uncomfortable reminders of antiquarian practices with little information available to enhance their value as artefacts worthy of conservation or display. A multi-disciplinary research project, based at the University of Manchester, is currently redressing these issues. One recent aspect of this work has been the characterization of natural products employed in the mummification of votive bundles. Using gas chromatography–mass spectrometry and the well-established biomarker approach, analysis of 24 samples from 17 mummy bundles has demonstrated the presence of oils/fats, natural waxes, petroleum products, resinous exudates, and essential oils. These results confirm the range of organic materials employed in embalming and augment our understanding of the treatment of votives. In this first systematic initiative of its kind, initial findings point to possible trends in body treatment practices in relation to chronology, geography, and changes in ideology which will be investigated as the study progresses. Detailed knowledge of the substances used on individual bundles has also served to enhance their value as display items and aid in their conservation.     

高压水解处理氧化乐果废水研究

The effect of pressure on the hydrolysis rates and the degradation kinetics of environmentally persistent omethoate pesticide was studied. The results showed that the values of kobs increased and the values of activation volume (AV) decreased with increasing pressure. Among pH conditions (3.58, 6.01 and 8.5), pH 8.5 was found to be the unstable condition and its half-life was reduced from 263 min at 1 atm to 19.37 min at 10 atm. These results describe that high-pressure hydrolysis is a useful technique for the conversion of toxic organic phosphorus into inorganic phosphorus.     

延迟焦化试验装置的改进研究

延迟焦化减焦增液技术是一项非常诱人的技术,但评价延迟焦化生焦情况的实验比较复杂难做。研制改进了一种实验室用的延迟焦化小型试验装置,其操作简单、重复性好、精确度较高。     

糠醛厂水解渣制备活性炭新工艺研究

以糠醛厂水解渣为原料 ,以 H3 PO4为活化剂制备活性炭的工艺进行了研究 ,得出优惠工艺条件 ,与老工艺相比该工艺基本无污染。     

从脐橙皮渣中提取果胶的工艺条件研究

研究了以脐橙皮渣为原料,酸水解乙醇沉淀法提取果胶的工艺,通过正交实验,探讨果胶提取的最佳工艺条件,同时以果胶得率×粘度=胶凝单元数(Joily units)作为衡量果胶产量的综合指标.结果表明在温度为85℃,水料比15:1,pH值1.5,时间90min,果胶得率可达18.62%.     

溶液干渣法测定氯化稀土溶液中十五个稀土元素的含量

用溶液干渣法测定氯化稀土溶液中十五个稀土元素的含量,具有快速、简便的特点。可广泛应用于稀土分组分离的中间控制分析。本文研究了电流、曝光时间、电极形状等分析条件对分析结果的影响。     

有机助剂对羽毛绒洗涤的影响

研究了羽毛绒洗涤工艺中几种有机助剂的作用，选择了THD醇为较好的助剂，使用THD醇可以使羽绒耗氧指数降低60％，并用正交实验确定了洗涤工艺中各物料的投料比。     

Distribution characteristics of minerals and elements in chromite ore processing residue

In this paper,environmental scanning electron microscopy (ESEM) is applied to characterizing the mineral and element distribution of chromite ore processing residue (COPR).The test results show that Cr-bearing brownmillerite occurs in the rim of COPR particle,while hydroandradite with Cr(Ⅵ) in its structure presents inside the COPR particle.Periclase and calcite occur in the interstitial area.Element analyses show that Ca,Fe and Al are distributed throughout the COPR particle,and Mg exists mostly in the interstitial area or on the particle surface.A lower content of Cr is evenly distributed in the COPR particle,while slightly higher concentration of Cr occurs inside the particle.It is suggested that it will take a relatively longer time for Cr to migrate out of COPR,especially for hexavalent chromium,so the leaching time and the particle size may be two important factors to affect the release of Cr(Ⅵ).