Using artificial simulation of diesel contaminated soil, the degradation and remediation ability of functional microbial communities on diesel contaminated soil, as well as changes in microbial diversity and microbial structure composition, were studied. The experimental results of microbial community degradation of diesel in soil showed that after 30 days of degradation, the final degradation rate of microbial community on diesel pollution in soil reached 74.3%.The respiratory intensity of the microbial community in the soil gradually increases within 30 days. When the soil depth changes, the degradation ability of the microbial community gradually weakens with the increase of depth. The results of high throughput sequencing showed that after 30 days of degradation, the microbial diversity and richness in the soil increased compared with the initial degradation, indicating that the microbial community could adapt to the diesel pollution environment well. The initial microbial community for diesel degradation is mainly composed of Proteobacteria, Firmicutes, and a small amount of Bctoidetes. After 30 days of cultivation, the main dominant bacteria in the surface soil are Proteobacteria, while the main dominant bacteria in the deep soil are Firmicutes. Studying the remediation of diesel?contaminated soil by microbial communities and changes in microbial structure and diversity, technical support can be provided for the remediation of diesel?contaminated soil.

In order to investigate the oxidation and degradation effect of potassium on naphthalene,the main factors affecting the degradation rate of naphthalene were determined by single factor experiments,and the degradation conditions of naphthalene were optimized by response surface analysis.The results show that the best degradation condition of potassium ferrate for mass concentratoion of 5.0 mg/L naphthalene are as follows:the temperature is 25 ℃,the pH is 7.0, the dosage of potassium ferrate is 0.60 g/L,and the react time is 30 min.Under the optimum oxidation degradation condition,the rate of naphthalene is 75.60%.The results of single factor experiment show that pH(A),the initial mass concentration of naphthalene(B), and the potassium ferrate dosage(C) are the main factors affecting the degradation rate of naphthalene,and the degree of influence is from big to small C>B>A.The results of multifactor experiment show that the order of interfactors from big to small is AC>AB>BC.The model predicted the optimal degradation conditions of naphthalene by potassium perferrate:the temperature is 25 ℃,the initial mass concentration of naphthalene is 2.79 mg/L and the pH is 6.8,the mass concentration of potassium ferrate is 0.90 g/L,and the reaction time is 30 min.Under the optimum degradation conditions,the highest degradaton rate of naphthalene is 91.82%.

As a clean and effective new energy, fuel cell is regarded as one of the most important energy technologies. Proton conduction in solids has attracted much interest because of its potential application in fuel cells. Metal⁃oxalate compounds constructed by metal ions and oxalate are a sense of inorganic⁃organic hybrid compounds, which have emerged as a new class of proton conductors because of their controllable structures and high chemical variety. We summarized the proton conduction properties of main group⁃oxalate compounds, transition metal⁃oxalate compounds and lanthanide metal⁃oxalate compounds, and their future development was prospected.

Aiming at the bad stability performance of normal foam in the Yan Chang No.6 oil field, a high stability gel foam system was developed and then evaluated in the aspect of stability and plugging. Through comparison and selection, now the system is made up of 0.4% FP388 foam agent, 0.3% AZ polymer, 0.3% T1&T2 crosslinker, and 0.3% CK2 foam stabilizer. The stability experiment of gel foam indicate that the half life of gel foam is 12 d and the viscosity of gel foam can stay at a high level, also remains stable in 30 d under 80 ℃ and 10 000 mg/L mineralization degree environmental conditions. The foam gel system has good injection and gel forming properties and can effectively seal medium high permeability reservoir.

Single stage refining and simulating three stages refining with furfural and N-methyl-2- pyrrolidone were carried out using vacuum gas oil (VGO) blended with Daqing and Shenbei oil as raw material.The optimum operation conditions were determined under the requirement about HVI500SN,and the experimental results were analyzed contrastively.The results show that when NMP refining is compared with furfural refining under the circumstance of the same refining effect,the refining temperature is decreased by 20℃,the mass ratio of solvent to oil is decreased by 40%,and the yield of refined oil is increased by 3% ,which show NMP refining is superior to furfural refining.

The formula of inorganic salt ion solution and oil-water ratio about simulative emulsion were determined by understanding of the mining way of Liaohe oilfield viscous oil,and on the basis of moisture content and mineralization of oil emulsion from Liaohe oil field.Simulative oil emulsion was prepared by using PAM polymers and petroleum sulfonates surfactant.The effects to viscosity of simulative oil emulsion by emulsification time and stirring speed were investigated.And dehydration test was carried out by using the same kind of demulsifiers on simulative emulsion and on-site oil emulsions.The results show that viscosity of simulative oil emulsion can be close to crude-oil emulsion when emulsified for 6 h and stirring speed was 2 400r/min.A similar curve had been gained at the dehydration test.It is concluded that the simulative emulsion can substitute for the crude-oilemulsion to evaluate demulsifiers initially.