Pilot-scale field studies on activated microbial remediation of petroleum-contaminated soil.

Soil contamination by petroleum, including crude oil from various sources, is increasingly becoming a pressing global environmental concern, necessitating the exploration of innovative and sustainable remediation strategies. The present field-scale study developed a simple, cost-effective microbial remediation process for treating petroleum-contaminated soil. The soil treatment involves adding microbial activators to stimulate indigenous petroleum-degrading microorganisms, thereby enhancing the total petroleum hydrocarbons (TPH) degradation rate.

Microbial enhanced oil recovery (MEOR): recent development and future perspectives.

After conventional oil recovery operations, more than half of the crude oil still remains in a form, which is difficult to extract. Therefore, exploring and developing new enhanced oil recovery (EOR) technologies have always been priority research in oilfield development. Microbial enhanced oil recovery (MEOR) is a promising tertiary oil recovery technology that has received widespread attention from the global oil industry in recent years due to its environmental friendliness, simplicity of operation, and cost-effectiveness.

Synthesis, crystal structure and bioactivities of α-asaronol.

α-Asaronol [or (E)-3'-hydroxyasarone; systematic name: (E)-3-(2,4,5-trimethoxyphenyl)prop-2-en-1-ol; CHO] was synthesized towards the development of a potential antiepileptic drug. Following purification by recrystallization, single crystals of α-asaronol were obtained by a liquid interface diffusion method at room temperature. The product was characterized by H and C NMR, and FT-IR spectroscopic analysis.

Ligand-free copper-catalyzed C(sp)-H imidation of aromatic and aliphatic methyl sulfides with -fluorobenzenesulfonimide.

A novel and efficient process has been developed for copper-catalyzed C(sp)-H direct imidation of methyl sulfides with -fluorobenzenesulfonimide(NFSI). Without using any ligands, various methyl sulfides including aromatic and aliphatic methyl sulfides, can be transformed to the corresponding -((phenylthio)methyl)-benzenesulfonamide derivatives in good to excellent yields.

Bioremediation of oily sludge by solid complex bacterial agent with a combined two-step process.

In the present research, a bioremediation process was developed using solid complex bacterial agents (SCBA) through a combined two-step biodegradation process. Four isolated strains showed high efficiency for the degradation of total petroleum hydrocarbons (TPH) and the reduction of COD of the oily sludge, at 96.6% and 92.

A 3D Cu(ii) tetrazolate coordination polymer based on pentanuclear units with a large coercive field.

A novel 3D coordination polymer {[Cu4.5 (BTZE)1.5 (μ3-OH)3(μ-OH)(SO4)(H2O)1.

Biodegradation of crude oil by Chelatococcus daeguensis HB-4 and its potential for microbial enhanced oil recovery (MEOR) in heavy oil reservoirs.

Biodegradation of crude heavy oil was investigated with Chelatococcus daeguensis HB-4 that was isolated from the produced fluid of Baolige Oilfield in China. Batch growth characterization and crude oil degradation tests confirmed HB-4 to be facultative anaerobic and able to degrade heavy oil. The oil degradation was found to occur through degrading long hydrocarbons chains to shorter ones, resulting in oil viscosity reduction.

Research Progress in MnO -Carbon Based Supercapacitor Electrode Materials.

With the serious impact of fossil fuels on the environment and the rapid development of the global economy, the development of clean and usable energy storage devices has become one of the most important themes of sustainable development in the world today. Supercapacitors are a new type of green energy storage device, with high power density, long cycle life, wide temperature range, and both economic and environmental advantages. In many industries, they have enormous application prospects.

Isopropyl 3,4-dihy-droxy-benzoate.

In the crystal structure of the title compound, C(10)H(12)O(4), O-H⋯O hydrogen bonds incorporating R(2) (2)(10) and R(2) (2)(14) motifs link mol-ecules into chains along [1[Formula: see text]0]. An intra-molecular O-H⋯O hydrogen bond is also observed.

Isopropyl 3-(3,4-dihydroxy-phen-yl)-2-hydroxy-propanoate.

The title compound, C(12)H(16)O(5), is a derivative of β-(3,4-dihydroxy-phen-yl)-α-hydr-oxy acid. The crystal packing is stabilized by inter-molecular O-H⋯O hydrogen bonds.