Degradation of antibiotics by bacteria and fungi from the aquatic environment
The potential of using bacteria and fungi from aquatic environment to degrade a mixture of two antibiotics, ciprofloxacin and erythromycin, was investigated. The antibiotics were added to river water at a concentration of 4 and 120 mg.L-1 for ciprofloxacin and erythromycin respectively. Three variations of the study unit were setup. The first having increased phosphate concentration; the second having slight...
Adsorption of Rhodamine B dye from aqueous solution onto acid activated mango (Magnifera indica) leaf powder: Equilibrium, kinetic and thermodynamic studies
Acid activated mango leaf powder (MLP) was employed for removal of the rhodamine B (RB) dye from aqueous solution. Batch adsorption studies were carried out under varying conditions of dye concentration, adsorbent dose, particle size, contact time, pH, and temperature. Removal efficiency was 77% in 45 min with 6.0 pH, 25 g/L as dose, 250 mg/L RB concentration and 30°C temperature. The equilibrium data the best...
Evaluation of socio-economic impact of arsenic contamination in Bangladesh
Groundwater arsenic contamination in Bangladesh is reported to be the biggest arsenic disaster in the world in terms of the affected population. Arsenic contamination in groundwater is recognized as the major threats to drinking water and is being the key environmental health problem of 21st century. In Bangladesh Arsenic was first detected in Chapai Nawabgonj, in 1993; since then higher levels of arsenic (exceeding the...
Laboratory outbreak investigation of sudden death syndrome in broiler chicken in Kathmandu Valley, Nepal
The incidence of death of broiler birds above 40 days suddenly increased in the month of July to October 2008-2009 in Kathmandu Valley. Birds that were presented for post-mortem examination at the Central Veterinary Laboratory Tripureswor Kathmandu were usually found dead on their backs with wings out-stretched. Gross lesions recorded on post mortem examinations were muscle oedema, pulmonary, renal and liver congestion,...