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Jagetiya, B. L.
- Bioremediation:An Ecological Solution to Textile Effluents
Authors
1 Laboratory of Plant Physiology and Biotechnology, Department of Botany, M.L.V. Govt. College, Bhilwara (Rajasthan), IN
Source
Asian Journal of Bio Science, Vol 6, No 2 (2011), Pagination: 248-257Abstract
Rapid technological advances, speedy growth in urban sector and unplanned human settlement in the cities have resulted in the pollution problem. Industrial and nuclear energy installation produce large quantities of toxic or hazardous wastes, which have the potential to contaminate the environment. Coloring matter, acidic effluents, suspended solids, waxes, unreacted dyes, starch products, heavy metals etc. which are releasing at different stages of textile processing. Water which emerge out after use from industries is termed as ‘industrial effluents‘ and this waste water have high BOD, pH as well as temperature.
All the conventional remediation methods used for polluted environments have specific benefits and limitations. The use of microorganisms and plant species to control and destroy contamination is of increasing interest to minimize some of these pollution problems called ‘Bioremediation‘. Bioremediation can serve as a prospective method for decontamination and rehabilitation of contaminated sites. Bacteria, algae, fungi and yeast have all been found to absorb and breakdown metal compounds. Certain lichens were used as bio-accumulator of heavy metals.
As compared to the conventional remediation methods, bioremediation is eco-friendly as well as easy to implement. The future of bioremediation, comprise of ongoing research work and have to go through a developmental phase and many technical barriers. Several hyper-accumulator species still need to be highlighted and implemented for successful future of bioremediation programmes.
Keywords
BOD, Conventional Remediation, Bioremediation, Hyper-Accumulator.
- Relative Toxicity of Various Nickel Species on Seed Germination and Early Seedling Growth of Vigna unguiculata L.
Authors
1 Department of Botany, M.L.V. Govt. College, Bhilwara (Rajasthan), IN
Source
Asian Journal of Bio Science, Vol 2, No 1 (2007), Pagination: 11-17Abstract
Cowpea (Vigna unguiculata L.) seedlings were raised in water culture and exposed to varying concentrations (1,10,100,1000μM) of nickel as Ni (NO3)2 NiSO4and NiCl2 with a view to compare the effect of the above nickel species on seed germination, ultimate percentage germination, dry matter production, chlorophyll contents and soluble protein (leaf) contents. The ultimate germination was 100% (except in 1000 μM) in all the treatments of various nickel species. The germination speed was found maximum at 1μM nickel concentration. Lower concentration of nickel resulted in an enhancement while higher levels resulted decrease in fresh mass, dry matter production and chlorophyll contents of seedlings. Soluble leaf protein contents increased linearly with increasing application rates of nickel. In general, NiCl2 was more inhibitory than NiSO4 and Ni (NO3)2. Ni (NO3)2 was found to be least toxic. The extent of inhibition increased with enhanced levels of Ni2 + ions. The toxicity series was found to be NiCl2 > NiSO4 > Ni (NO3)2.Keywords
Nickel, Vigna unguiculata L. Toxicity, Early Seedling Growth.- Effect of Foliar Application of Resorcinol on Certain Biochemical Parameters and Yield of Soybean
Authors
1 Laboratory of Plant Physiology and Biotechnology, Dept. of Botany, M. L. V. Govt. College, Bhilwara-311 001 (Raj.), IN