Microbial degradation of textile industrial effluents

Textile waste water is a highly variable mixture of many polluting substance ranging from inorganic compounds and elements to polymers and organic products. To ensure the safety of effluents, proper technologies need to be used for the complete degradation of dyes. Traditionally, treatments of textile waste water involve physical or chemical methods. But both physical and chemical methods have many short comings. Biodegradation is an eco friendly activity it can produce little or no secondary hazard. In this work, the in situ degradation of textile industrial effluent was carried out. The degradation of two different dyes, blue and green colour has been studied. The isolated organism which showed the ability to degrade dye was characterized and identified as Paenibacillus azoreducers using various biochemical techniques. The degradation of dye was confirmed via the decolourisation assay and by the measurement of COD and BOD values. A trickling bed reactor was designed and the treatment of effluent from a textile industry was effectively carried out.Key words: Biodegradation, textile wastewater, secondary hazard, Paenibacillus azoreducens, decolourisation, trickling bed reactor

Freshwater ascomycetes from north Maharashtra-III

The present paper deals with two species of Zopfiella Winter the freshwater ascomycetes viz. Zopfiella latipes (Lundq.) Malloch and Cain and Zopfiella submersa Guarro, Ai-Saadon, Gene and Abdullah were collected from the submerged wood samples from the various water bodies in North Maharashtra region. Zopfiella submersa Guarro, Al-Saadon, Gene and Abdullah is being recorded for the first time form India, while Zopfiella latipes (Lundq.) Malloch and Cain is being reported for the first time from North Maharashtra. Brief notes and illustration are given for each taxon. Geographical distribution of each species in India is also provided

Diversity of Trichocladium Harz from North Maharashtra

The present paper deals with four species of Trichocladium Harz, Dematiaceous Hyphomycetes were collected from the submerged wood samples from the various water bodies in North Maharashtra region. Three species viz. Trichocladium angelicum Roldon & Honrubia Trichocladium engledense Hyde & Goh and Trichocladium taiwanense Matsush. are being recorded for the first time form India. While Trichocladium lignincola Schmidt is being reported for the first time from Maharashtra state. Brief notes and illustration are given for each taxon. Geographical distribution of each species in India is also provided

Particle Size Dependent Gas Sensing Performance of Zno Nanorods based Thick Film Resistors

Pure bulk ZnO was observed to be less sensitive to hazardous, toxic and inflammable gases. As the particle size of the materials get reduced from bulk to nanoscale, the gas sensing performance of pure ZnO was observed to increase crucially. It was also observed that, further decrease in the particle size would leads to decrease in the gas response. The optimized average diameter of ZnO Nanorod / particle size is 12 nm, which exhibits crucial gas response. The disc type ultrasonicated microwave assisted centrifuge technique was used for the synthesis of materials. The dry powders of synthesized materials were transformed into thick films by screen printing technique. Various characterizations techniques were employed to study the surface topography, crystal structure, phase, particle size, etc. effect of the surface nanostructure, different gases, gas concentrations, particle size, long duration for ageing, etc. on the gas response of the samples were studied and discussed. DOI: 10.17762/ijritcc2321-8169.15080