Jyoti Sharma

Bio: Jyoti Sharma is an academic researcher. The author has contributed to research in topics: Garra gotyla & Adsorption. The author has an hindex of 4, co-authored 11 publications receiving 90 citations.

Effect of Manganese on haematological parameters of fish, Garra gotyla gotyla

Abstract: In the present study, an attempt has been made to study the effect of heavy metal Manganese (MnSO4) on the haematological parameters of fish Garra gotyla gotyla for 9 weeks experimental duration. 96 hours LC50 value of Manganese for G. gotyla gotyla was found to be 3.2 mg/l and three concentrations viz. 20%, 40% and 60% of LC50 were employed during experimental period. The parameters evaluated include total erythrocyte count (TEC), haemoglobin (Hb), haematocrit (Hct), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), total leucocyte count (TLC) and differential leucocyte count (DLC). Compared to control groups, TEC, Hb and Hct were found to exhibit significant decline whereas MCV and MCH exhibited overall increase in all concentration groups while MCHC contrarily exhibited fluctuating pattern. TLC depicted significant increase in all fishes following exposure to Manganese. DLC was observed to register an increase in number of lymphocytes, monocytes and eosinophils but a decrease in neutrophils, basophils and thrombocyte population.

A study on removal of congo red dye from the effluents of textile industry using rice husk carbon activated by steam

Abstract: In the present paper adsorption technique was employed for removal of Congo-Red dye. Congo-Red dye is a carcinogenic dye which comes in the effluents of textile industries during dyeing and rinsing processes. The technique was found to be very useful and cost effective for a better removal of dye. Although commercial activated carbon is a preferred sorbent for colour removal, its wide spread use is restricted due to high cost. Currently, the study of activated rice husk carbon as a low cost sorbent for removing dye has drawn attention of various researchers working in this field. In the present work, rice husk carbon (RHCAS) in the form of powder was investigated for removing dyes taking Congo Red as a model system. The adsorbent was made from rice husk procured from Kerala and was investigated under variable system parameters such as agitation time and dose of adsorbent. An amount of 0.08 g/l of RHCAS could remove 10 to 99 % of the dye from an aqueous solution of 25 ppm with the agitation time increasing from20 min to 200 min. The interactions were tested for both pseudo first- order and second – order kinetics and it was observed that the interactions could be better explained on the basis of first order kinetics.

Effect of different sublethal concentrations of Manganese on the levels of cortisol in Garra gotyla gotyla

Abstract: The objective of this study was to evaluate the possible effects of manganese (Mn) exposure on variations of cortisol levels in Garra gotyla gotyla. LC50 value of manganese after 96 hours was found to be 3.2mg/l for Garra gotyla gotyla. Three replicates of 10 fishes were subjected to three sub-lethal concentrations of manganese i.e. 0.64mg/l, 1.28mg/l and 1.92mg/l (20%, 40% and 60% respectively of LC50value of manganese) for 1, 5 & 9 weeks. Blood samples were isolated from the fish following the exposure to measure the levels of cortisol and compared to the control group. We observed significant increase(p<0.01) in the levels of cortisol of three groups of fish after 1st week of exposure to three doses of manganese as well as significant decrease in the cortisol of three groups exposed for 5th & 9thweek. The rate of decrease in group III (exposed to1.92 mg/l of Mn) was higher than that of group I & II (exposed to 0.64 mg/l of Mn and 1.28 mg/l of Mn).

A study of activated rice Husk charcoal as an adsorbent of Congo red dye present in Textile Industrial Waste

Abstract: Dyes are very hazardous pollutant discharged in the environmental in the effluents of textile industries during dyeing and rinsing processes causing detrimental effects on the workers. It is therefore fundamental to remove the dyes by using various techniques. In the present paper adsorption technique was employed for removal of Congo red dye. Congo red dye is a carcinogenic dye, which comes in the effluents of textile industries during dyeing and rinsing processes. In the present work, the effect of variables such as adsorbent dose and contact time on adsorption of dye was studied. The dose of rice husk charcoal was varied from 0.2 g/l to 2.0 g/l, and contact time was varied from 30 minute to 360 minute. Keeping all factors constant, with the change of dose of rice husk charcoal, it was found that adsorption increases from 0.2 g/l to 1.2 g/l and then it becomes constant; with the change of contact time, the adsorption increases from 30 minute to 210 minute and then becomes constant.

Seasonal Variations in Haematological Parameters of Hill Stream Fish, Garra Gotyla Gotyla from Jhajjar Stream of Jammu Region, India

Abstract: Seasonal variation in total erythrocyte count (TEC), Haemoglobin level (Hb), Haematocrit (Hct), Differential leucocyte count (DLC), Total leucocyte count (TLC), Mean corpuscular volume (MCV), Mean corpuscular haemoglobin (MCH) and Mean corpuscular haemoglobin concentration (MCHC) were determined in hill stream fish, Garra gotyla gotyla from Jhajjjar stream of Jammu region, J&K India. Presently RBC dependent parameters viz. TEC, Hb and Hct exhibit a marked increase (P<0.01) during spring and summer season. TLC in tune with RBC dependent parameters also depicted a significant increase (P<0.01) during the spring and summer season. Whereas an increase in the calculated values of RBC, MCV and MCH has been observed from monsoon to winter season. MCHC showed an increase during the hot period of the year.

Adsorptive amputation of hazardous azo dye Congo red from wastewater: a critical review.

Abstract: Increasing amount of dyes in an ecosystem has propelled the search of various methods for dye removal. Amongst all the methods, adsorption occupies a prominent place in dye removal. Keeping this in mind, many adsorbents used for the removal of hazardous anionic azo dye Congo red (CR) from aqueous medium were reviewed by the authors. The main objectives behind this review article are to assemble the information on scattered adsorbents and enlighten the wide range of potentially effective adsorbents for CR removal. Thus, CR sorption by various adsorbents such as activated carbon, non-conventional low-cost materials, nanomaterials, composites and nanocomposites are surveyed and critically reviewed as well as their sorption capacities are also compared. This review also explores the grey areas of the adsorption performance of various adsorbents with reference to the effects of pH, contact time, initial dye concentration and adsorbent dosage. The equilibrium adsorption isotherm, kinetic and thermodynamic data of different adsorbents used for CR removal were also analysed. It is evident from a literature survey of more than 290 published papers that nanoparticle and nanocomposite adsorbents have demonstrated outstanding adsorption capabilities for CR. Graphical abstract ᅟ.