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We show the effectiveness of the communal waste water cleaning plant of the type "LIMNOWET® Constructed Wetlands (CW)". The tests were done with the Allium metaphase test and show the degree of genotoxicity, by observing the aberrations of the metaphasic chromosomes of the plant Allium cepa L. that are evoked by genotoxic su.. Read More
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Background: Lanzhou reach of the Yellow River is contaminated by heavy metals including chromium perennially. The microbial community within the sediment is very active. Yet the study on the bacteria in this distinctive microbial community is still scarce. Results: LZ-01, a Gram-positive hexavalent chromium-reducing bacterium wa.. Read More
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Lead (Pb) is known to cause highly toxic direct and indirect effects on plants, animals and humans, like other metals of its group. The mitigating effects of exogenous Silicon (Si) application on Pb stressed cotton plants were investigated in this hydroponic study. The following growth parameters were observed chlorophyll conten.. Read More
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Bioremoval of Azo dye Reactive Red by Bacillus spp. ETL-1982
Bacillus spp. ETL-1982, with notable ability to decolorize the reactive textile dye Reactive Red, was isolated from the activated sludge collected from a textile mill. Phenotypic characterization and phylogenetic analysis of the 16S rDNA sequence indicated that the bacterial strain belonged to the genus Bacillus. Bacillus ETL-19.. Read More
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Current knowledge on the basic radionuclide tolerance indicates that plants may develop mechanisms preventing the damaging effects of radionuclide stress. The radionuclides content was determined in the Mediterranean coastal black sand soil and in the edible portions of the four food crop plant species, viz., Eruca sativa, Lycop.. Read More
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Optimization of Environmental Parameters on Microbial Degradation of Reactive Black Dye
The study involved isolation of bacteria possessing high potential to degrade Reactive Black azo dye in liquid medium. Eighty four strains of bacteria were isolated through enrichment technique by using Reactive Black azo dye as the source of carbon and nitrogen in the mineral salt medium. Bacterial strains showing high decolori.. Read More
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Biodegradation of Acetaldehyde by Microorganisms in Biological Activated Carbon Filters
Biodegradation of acetaldehyde and characteristic analysis of microorganisms in Biological Activated Carbon (BAC) filter were investigated. The results revealed that microorganisms in BAC bed were mainly responsible for the removal of acetaldehyde. Biodegradation efficiency for acetaldehyde was more than 95%. The phylogenetic an.. Read More
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Enzyme-Mediated Bioremediation of Organophosphates Using Stable Yeast Biocatalysts
Organophosphates are extremely toxic compounds, which pose a threat to the environment and public due to their widespread use as common pesticides or due to their deliberate release as chemical weapons. The bacterial enzyme organophosphorus hydrolase (OPH, EC. 3.1.8.1) can hydrolyze, and thereby detoxify a broad range of organop.. Read More
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Microbial degradation of Textile Dye (Remazol Black B) by Bacillus spp. ETL-2012
In the present study, an attempt was made to examine the potential of isolated bacterium for decolorization of Remazol (azo dye) in batch reactors. Bacteria from soil, and dye waste were subjected to acclimatization with azo dye, in the basal nutrient media. The most promising bacterial isolate was used for further dye degradati.. Read More
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Fabrication and Physico-chemico-thermo-echanical Accreditation of Green Composite
The use of synthetic glass fiber as reinforcement is hazardous and its degradation is not easy, although these composites are useful for various applications. Hibiscus sabdariffa (Sorrel) has high (73.9%) cellulose content, tensile strength, and is present in abundance in nature through-out the world, but it is fragile and weath.. Read More
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In the present study, the effect of pesticide (Chlorpyrifos) on rhizospheric soil and non–rhizospheric soil of two plants marigold and Canna has been investigated. Further, microorganisms have been isolated from Rhizospheric and Non–Rhizospheric soil, characterized and their pesticide degradation ability was investig.. Read More
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A bacterium capable of growth on trichloroethylene as the sole carbon source was identified as Stenotrophomonas maltophilia PM102 by 16S rDNA sequencing (GenBank acc. No. JQ797560). Genomic DNA of this bacterium was amplified using primers specific for the original todC1 gene of Pseudomonas putida F1. Two PCR products were obtai.. Read More
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In the work ahead, the microbial degradation of Malachite Green (MG) was investigated by the bacterium Klebsiella. At first, the Taguchi Optimizing Method (TOM) was used to optimize the experimental conditions. 16 introduced states were tested by the L-16 array type of the software and each case was repeated three times for calc.. Read More
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Degradation of the Azo Dye Reactive Red 195 by Paenibacillus spp. R2
Azo dyes are a widespread class of poorly biodegradable industrial pollutants. In anaerobic environments, azo bonds are reductively cleaved yielding carcinogenic aromatic amines, many of which are assumed to resist further metabolism by anaerobes bacteria. The latter compounds generally require aerobic conditions for their degra.. Read More
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Sphingobium sp. strain PNB isolated from municipal waste-contaminated soil had already been described to possess catabolic potential of assimilating phenanthrene. Apart from phenanthrene, strain PNB was found to be capable of utilizing naphthalene and biphenyl singly, as sole carbon and energy sources. Based on chromatographic a.. Read More
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Bioremediation of Soil Contaminated With Used Motor Oil in a Closed System
A study was carried out on biodegradation of soil contaminated with used motor oil in aerobic fixed bed bioreactors. Six treatments, labeled TR1 to TR6, were investigated in an experimental rig for 70 days continuously. Bioremediation indices such as Total Petroleum Hydrocarbon (TPH), Oil and Grease content (O&G), Total Hete.. Read More
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Bioremediation of Chromium in Pulp and Paper Processing Industrial Effluents by Indigenous Microbes
The present study was conducted with the goal of elimination of chromium toxicity in the pulp and paper processing industrial effluents. The physicochemical analysis of effluents showed that some of the parameters were exceeded and some were within the permissible limits as per the WHO standards. Based on the isolation, identifi.. Read More
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Microbial Diversity and Degradation of Pollutants
Extensive use of chemical substances has now become a global environmental issue. The ideal chemical substance is expected to serve, only its indented use. When it becomes unwanted, the contamination of the environment ensues. Harmful effects of a chemical substance set in the process of pollution. The cost effective choice to h.. Read More
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In the sector of respirometry applied to solid waste many tools are available. Moreover, methods for assessing the oxygen consumption can be significantly different. In Italy, the sector is characterized by the adoption of dynamic approaches that are preferred to the static ones. In this paper, a comparison between the two respi.. Read More
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Conventional systems treating paper effluents and cellulose are quite efficient in the reduction of Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD). In general, there is primary stage clarification followed by secondary treatment, usually with a biological system (activated sludge). However, for the efficient de.. Read More
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