The pyrolysis of the biomass Agave salmiana bagasse (10 K/min, ambient to 700 °C) was investigated in absence and presence Aerosil MCM-41 catalysts. synthetized using a typical hydrothermal method characterized with XRD, SAXS, SEM, TEM, nitrogen physisorption confirm unidimensional 3.4 nm diameter pores. Pyrolysis products were monitored online mass spectrometry (MS), analyzing production 29 di...

Abstract Salt stress is one of the most serious factors that influence plant growth and yield. The extensive use chemical fertilizers caused an increase in land contamination hence effects on human health. biofertilizers can solve these problems. In present work, different concentrations Spirulina platensis liquid extracts (SLEs; 1%, 2%, 4%) were used to enhance seeds germination, seedling grow...

In the present study, the removal of phenol from synthetic wastewater was evaluated in a fixed bed reactor with up flow sludge blanket filtration (FUSBF) in comparison with a typical USBF system. At hydraulic retention time (HRT) of 24 hours and solid retention time (SRT) of 20 day, the effect of initial concentration of phenol (260-1020 mg/L) on phenol and chemical oxygen demand (COD) removal ...

In a previous communication, Sheets et al. (1954) have shown that three phenol-resistant organisms, a sporeforming rod, a coccus and a short rod, belonging to the genera Bacillus, Micrococcus and Pseudomonas respectively, were isolated from a trickling filter, operated continuously at 54 C for the treatment of phenolic wastes. The Pseudomonas-like rod predominated over the other two types. A pu...

As reported, the two-component system ColRS is involved in two completely different processes. It facilitates the root colonization ability of Pseudomonas fluorescens and is necessary for the Tn4652 transposition-dependent accumulation of phenol-utilizing mutants in Pseudomonas putida. To determine the role of the ColRS system in P. putida, we searched for target genes of response regulator Col...

Bicarbonate enhances the transformation of phenol upon irradiation of hematite, and phenol nitration upon irradiation of both nitrate and nitrite. Hematite under irradiation is able to oxidise the carbonate ion to the CO3-. radical, which in turn oxidises phenol to the phenoxyl radical faster compared to the direct photo-oxidation of phenol by hematite. The formation of CO3-. from hematite and ...

The ubiquity, high diversity and often-cryptic manifestations of fungi and oomycetes frequently necessitate molecular tools for detecting and identifying them in the environment. In applications including DNA barcoding, pathogen detection from plant samples, and genotyping for population genetics and epidemiology, rapid and dependable DNA extraction methods scalable from one to hundreds of samp...

A new method for determining the endocrine disrupting substance 4-nonylphenol (technical grade=mixture of isomers, 4-NP) from water samples has been developed by using 4-(2,6-dimethylhept-3-yl)phenol (4-sec-NP) as model compound. This branched monoalkylphenol is shown to serve as internal standard (IS) for the determination of technical 4-nonylphenol. To the best of our knowledge, 4-(2,6-dimeth...

IVANOVA, P., V. CHALOVA, L. KOLEVA, I. PISHTIYSKI and M. PERIFANOVA – NEMSKA, 2012. Optimization of protein extraction from sunflower meal produced in Bulgaria. Bulg. J. Agric. Sci., 18: 153-160 Sunflower meal obtained after defatting of sunflower seeds is a by-product, which has the potential to serve as an attractive source for the preparation of protein isolates for food purposes. Protein ex...

Phenol was extracted from sebacic acid wastewater (SAWW) using liquid-liquid extraction in batch as well as serial modes by applying different solvent: SAWW (1:250 5:250, v/v). Alcohols (1-hexanol, 1-heptanol, and 1-octanol), castor oil and Aliquat-336® were used for phenol extraction. In a typical extraction experiment involving shaking and allowing for phase separation, phenol (75-96%) can be...