Sanjay Kumar Dubey

Publications (5) View all

• Article: BIOREMEDIATION OF INDUSTRIAL EFFLUENT USING CYANOBACTERIAL SPECIES:TOLYPOTHRIX CEYTONICA AND ANABAENA ORYZAE

  Sanjay Kumar Dubey
  [show abstract] [hide abstract]
  ABSTRACT: This study investigated the potential degradation of industrial effluents by environmental species of cyanobacteria. Cyanobacterial species isolated from the Pharmaceutical and Textile industries Mandideep, Bhopal were exposed. Isolation and utilization of the locally generated cyanobacterial biomass for remediation of private industrial activities will generate a source of revenue in Bhopal localities. Biodegradation and biosorption capacity of some potential cyanobacterial species: Oscillatoria sp., Synechococcus sp., Nodularia sp., Nostoc sp. and Cyanothece sp. dominated the effluents and mixed cultures showed varying sensitivity. Contaminant was removed by all the species, either as individuals or mixtures, at both concentrations. The abundance of cyanobacteria in this effluent was due to favorable contents of organic matter, rich calcium and nutrients such as nitrates and phosphates with less dissolved oxygen. Removal efficiencies of the different contaminants were evaluated and compared. Results confirmed the high efficiencies of the investigated species for the removal of the target contaminants which were species and contaminant-dependent. The contaminants removal efficiency (RE) percentage of cyanobacterial species ranged between 69.5 and 99.6% with a maximum of 97.0 to 99.6% at 5 ppm, 83.9% and 99.7% at 10 ppm and maximum between 95.5 and 99.7%. Mixed culture RE percentages ranged between 91.6 and 100% at 5 ppm with a maximum range of 99.3 to 100%, while at 10 ppm, the RE percentage ranged between 90.4 and 100%, with a maximum range of 96.0 to 100%. Results indicate the potential of natural resources as efficient agents for pollution control. Key word: Cyanobacteria, industrial effluents, bioremediation.
  Journal of Applied Phycology 07/2011; · 2.41 Impact Factor
• Source

  Available from: Sanjay Kumar Dubey

  Article: Studies on Cyanobacterial Biodiversity in Paper Mill and Pharmaceutical Industrial Effluents

  Sanjay Kumar Dubey, J Dubey, A J Viswas, P Tiwari
  [show abstract] [hide abstract]
  ABSTRACT: A thorough knowledge of the physical, chemical and biological characteristics of an industrial waste is a crucial requirement for any attempt at chemical and/or biological treatment of the waste. Hence the present study was aimed to assess the physicochemical characteristics and cyanobacterial study on different industrial effluents. In the present study, effluents from two different places, paper mill and pharmaceutical industries, were selected to determine the cyanobacterial biodiversity. It was revealed that the physicochemical characteristics of both effluents studied were more or less similar. Total 25 species of cyanobacteria were found to be distributed in two different effluents in which twenty two were found in paper mill and fourteen were in pharmaceutical industries. Some of the species of cyanobacteria like Microcystis aeruginosa, Oscillatoria curviceps, O. princeps, Phormidium ambiguum, P. corium and few more were recorded in both the effluent analyzed. The dominant genus was recorded to be Oscillatoria and among themselves its six species were recorded. The abundance of cyanobacteria in these effluents was due to favorable contents of organic matter, rich calcium and nutrients such as nitrates and phosphates with less dissolved oxygen. Therefore, it can clearly stated that physicochemical characters together with biological monitoring of industrial effluents provided converging lines of evidences for evaluation of polluted habitats in this case as in some other studies reported by many researcher. This type of study would be valuable for future pollution abatement programmes.
  British Biotechnology Journal. 06/2011;
• Article: Potential use of cyanobacterial species in bioremediation of industrial effluents

  Sanjay Kumar Dubey
  [show abstract] [hide abstract]
  ABSTRACT: This study investigated the potential degradation of industrial effluents by environmental species of cyanobacteria. Cyanobacterial species isolated from the Pharmaceutical and Textile industries Mandideep, Bhopal were exposed. Isolation and utilization of the locally generated cyanobacterial biomass for remediation of private industrial activities will generate a source of revenue in Bhopal localities. Biodegradation and biosorption capacity of some potential cyanobacterial species: Oscillatoria sp., Synechococcus sp., Nodularia sp., Nostoc sp. and Cyanothece sp. dominated the effluents and mixed cultures showed varying sensitivity. Contaminant was removed by all the species, either as individuals or mixtures, at both concentrations. The abundance of cyanobacteria in this effluent was due to favorable contents of organic matter, rich calcium and nutrients such as nitrates and phosphates with less dissolved oxygen. Removal efficiencies of the different contaminants were evaluated and compared. Results confirmed the high efficiencies of the investigated species for the removal of the target contaminants which were species and contaminant-dependent. The contaminants removal efficiency (RE) percentage of cyanobacterial species ranged between 69.5 and 99.6% with a maximum of 97.0 to 99.6% at 5 ppm, 83.9% and 99.7% at 10 ppm and maximum between 95.5 and 99.7%. Mixed culture RE percentages ranged between 91.6 and 100% at 5 ppm with a maximum range of 99.3 to 100%, while at 10 ppm, the RE percentage ranged between 90.4 and 100%, with a maximum range of 96.0 to 100%. Results indicate the potential of natural resources as efficient agents for pollution control.
  AFRICAN JOURNAL OF BIOTECHNOLOGY 02/2011; · 0.57 Impact Factor
• Conference Proceeding: Bioremediation of industrial effluents and chromium containing wastes using cyanobacterial species in India

  Sanjay Kumar Dubey, Jaishree Dubey
  [show abstract] [hide abstract]
  ABSTRACT: Heavy metal pollution of ground and surface waters by industrial effluents has become a serious threat to the environment especially in developing countries. One example of heavy metal pollution is the high chromium containing liquid effluents discharged from different industries. Though many conventional physico-chemical methods are currently being practiced, biotechnological methods are becoming attractive alternatives, as they are economical and eco- friendly. In this context, the search for innovative and eco-friendly biotechnologies to remove toxicants from effluents has focused attention on the detoxification capacity of a variety of cyanobacteria. In the present work, preliminary studies were carried out using two species of cyanobacteria for the treatment of industrial effluents with special reference to trivalent chromium. The effects of different concentrations of chromium on the growth response of these species in terms of biomass and chlorophyll-a were studied in addition to their capacity to accumulate chromium. These species were very effective in removal of trivalent chromium (95 - 100%) besides reducing BOD and COD of the effluent
  bio-resource Management in India, Sagar, Madhya-Pradesh, India; 01/2011
• Source

  Available from: Sanjay Kumar Dubey

  Article: Blooms Producing Cyanobacterial Species from Lake: A Serious Global Issue

  Sanjay Dubey
  [show abstract] [hide abstract]
  ABSTRACT: Based on most of the literature, this paper reviewed the progress made in following aspects: cognition to cyanobacteria recruitment, various traps for studying cyanobacteria recruitment in lakes, recruitment patterns of some species of cyanobacteria and the driving factors for recruitment. Additionally, perspective studies of cyanobacteria recruitment in lakes were pointed out. In light of the existing knowledge, cyanobacteria recruitment could be regarded as a process that benthic overwintering cyanobacteria migrated to the pelagic phase after germination and growth renewal under suitable conditions. This process was divided into three consecutive phases: germination, a potential growth phase and migration to the pelagic phase. Previous studies mostly focused on the migration from sediments to water. To date, several kinds of traps had been designed to investigate cyanobacteria recruitment. Some studies showed that amounts of cyanobacteria recruitment were higher in shallow regions than deep regions of lakes and the recruitment rates mostly peaked in a given time of year before blooms onset. Temperature, resuspension and bioturbation had been recognized to be the most important factors for driving cyanobacteria recruitment. Other factors (such as light, nutrients, anoxia, etc.) also played a role. INTRODUCTION reduce the summer blooms by 50%. Therefore, recruitment
  global journal of environment research. 05/2009;