Silver-silver chloride nanoparticles (Ag-AgCl NPs) have bactericidal activity and are widely used for water disinfection. The rapid, facile and green method was proposed for the synthesis of Ag-AgCl NPs which are nontoxic and cost effective. The present study highlights the use of water extract of Ehretia laevis leaf as a reducing agent for Ag-AgCl NPs synthesis from silver nitrate by a green synthesis route. The formation of Ag-AgCl NPs was analyzed by UV-Vis spectrophotometer, a characteristic absorbance peak at 450-500 nm with a color change in reaction solution was observed. Further, it was confirmed by XRD and EDX technique. The transmission electron microscopy reveals the synthesized Ag-AgCl NPs were spherical to oval shape with an approximately size of 20-80 nm. The X-ray diffraction confirms face-centered cubic structure of synthesized Ag-AgCl and the element composition by energy dispersive X-ray analysis. Interaction between leaf extract and the synthesized Ag-AgCl was studied by Fourier transform infrared spectroscopy. The synthesized Ag-AgCl NPs show bactericidal activity against Staphylococcus aureus, Listeria monocytogenes and Escherichia coli bacteria and also shows the photocatalytic degradation of methyl orange by Ag-AgCl NPs in combination with Fenton's reagent with 98% maximum degradation efficiency.

The paper deals with the study of for the adsorption of Cr (VI) using low-cost adsorbent activated charcoal prepared from Phyllanthus Emblica tree bark (AC-PETB). Batch adsorption method has been employed for the removal of Chromium (VI). The various parameters like adsorption dose, contact time, pH, etc have been studied in batch adsorption method. Langmuir and Freundlich's isotherms are used for the evaluation of equilibrium adsorption studies. To enhance the adsorption capacity of activated carbon, it is loaded with Sodium lauroyl sarcosinate and 2Acrylamido-2-methylpropane sulfonic acid and compared the adsorption capacity. The maximum removal efficiency for the removal of Cr (VI) found to be at pH 2. Activated charcoal loaded with 2-Acrylamido-2methylpropane sulfonic acid found to be most effective for the removal of Cr (VI) compared with the charcoal loaded with Sodium lauroyl sarcosinate and virgin activated charcoal.

Most of the essential elements are found in liberal quantities in the mineral soils. The present study deals with the assessment of macronutrients i.e. N, K, Ca, Mg, P, S and micronutrients i.e. Zn, Fe, Cu, Mn from satpuda region of orange belt, Maharashtra, India. Soil samples collected from different locations of the orange belt. The availability of nitrogen according to alkaline permanganate method and phosphorus by olsens method was found to be 243 – 287 Kg/Hector and 13.2 - 15.3 Kg/Hector respectively. Potassium was found to be in medium rang. Organic carbon as a measure of available Nitrogen found to be 0.5 %. The data reveals that the soils are rich with K, medium with P and low with N

Granular Activated Charcoal (GAC) was prepared by using Cordia macleodii tree bark and was tested for the removal of Chromium (VI). All the experiments were carried out in batch process. To enhance its metal ions adsorption capacity, activated carbons were impregnated with the chelating agents like sodium dodecyl sulfate (SDS), sodium dodecyl benzeneulfonate (SDBS) and Dioctyl sulfosuccinate sodium salt (DOSS) and were tested for the removal of Chromium (VI). Adsorption isotherms of Chromium ions in aqueous solution have been experimentally measured on both modified and unmodified charcoal. Effects of adsorbent dose, pH, contact time, initial concentration and temperature were investigated on removal of Chromium (VI). Adsorption was confirmed by SEM-EDAX and FTIR morphological analysis. The adsorption data were fitted well by Langmuir adsorption isotherm. Approximately 96.54% of hexavalent Chromium was removed at pH 2 within 3 hr. It was found that chemically modified GAC with chelating agents demonstrated better Chromium (VI) removal capabilities as compared to pure adsorbents in terms of their adsorption rate. On the basis of present studies, it can be concluded that granular activated charcoal impregnated with chelating agents has a higher Chromium (VI) adsorption capacity.

In this investigation an attempt has been made to remove Pb(II) and Co(II) from aqueous solution by using Ailanthus Excelsa Bark as an inexpensive adsorbent. Various parameters such as Adsorbent dosages ,P H and Contact time having and impact of adsorption efficiency were studied. Equilibrium contact time was found to be 360 minutes for both Pb(II) and Co(II). The removal efficiency for Pb and Co at these contact time was 85.43% and 84.71% respectively. The adsorption data were modeled by using both Langmuir and Freundlich adsorption isotherm.

The present investigations reveals the physico-chemical parameters of Satnoor and Naghthana dam water in warud region, Dist. Amravati(MS), Eight samples were collected in the month of January 2013 . Physical and Chemical Parameters such as pH, TDS, Alkalinity, Total Hardness, Chlorides, Magnesium, Fluoride, Nitrates, Dissolve Oxygen and COD were studied . The results indicate that, there is a marked variation in Physico-Chemical parameters of this dam water

Adsorption technique using Granular Commiphora Myrrha Bark has been applied for the removal of Chromium (VI) from aqueous samples. Batch experiment has been carried out for adsorption of Chromium (VI) onto Commiphora Myrrha Bark. The effect of various parameters influencing the Cr(VI) adsorptions such as effect of pH, Contact time, Adsorbent concentrations and initial metal ion concentrations have been studied. The data obtained from the batch processes have used to fit in Freundlich and Langmuir isotherm equations. This method is quite feasible, economic and time saving. The optimum contact time found is equal 360 min. The optimum dosage is equal to 0.5 mgs. The percentage removal is ranging between 75% 80%.

The potential to remove Pb (II) from aqueous solutions through adsorption using Ailanthus Excelsa tree bark was investigated.The effects of pH, contact time, initial concentration and adsorbent dosage on the adsorption of Pb (II) were studied.The different experimental conditions were investigated in this study.It was observed that the amount of Pb(II) adsorbed increases rapidly initially, then system approaches equilibrium within 360 minutes.The extent of Pb (II) removal increased with increase in time and adsorbent dosage.The reaction kinetics was studied using different models.Langmuir and Freundlich adsorption model is used for the mathematical description of the adsorption equilibrium and isotherm constants are evaluated.Equilibrium data fitted very well to the Langmuir and Freundlich model.

The studies on removal of Lead (II) were conducted using Ferronia elefuntum Fruit shell. Adsorption efficiency has been evaluated. The effect of pH, contact time, adsorbent dose, concentration of metal, particle size and temperature were studied. The results reveal that Langmuir and Freundlich isotherms are followed during adsorption process. Thermodynamids parameters indicate the feasibility of the process. Kinetic studies have been performed to understand the mechanism of adsorption. Column studies have been carried out to compare these with batch capacities.

Major water supply for agriculture and domestic purpose in Warud Region is from Upper Wardha and Shekhadari Dam Water. Even then, resident of most of the areas are mainly dependent on bore well water for domestic and Agriculture purpose especially in summer season. Hence large numbers of bore wells are existed. Fluoride content of selected bore-well water in an around of Warud was analyzed in the month of May, 2011. The study reveals that the fluoride concentration is within the permissible limits in few places as prescribed by BIS and WHO. But in some places it is more than prescribed by BIS and WHO. Hence it is essential to remove these excess fluorides by adsorption.

The stability constants of Mn(II), Fe(II) and Zn (II) with p-Chloro Malonamic acid (PCMA), p-Amino Malonamic Acid (PAMA), p-Nitro Malonamic Acid (PNMA) different percentage of dioxane water has been determined pontentiometrically by Calvin-Bjerrum titrations. The titrations were carried out at constant ionic strength (0.1 M) and constant temperature i.e. 27 +/- 0.1 degrees C. The data obtained can be used to study the values of porton-ligand and metal ligand stability constants for 1:1 and 1:2 complexes.

Treatment of dyes from wastewater is obligatory in order to avoid water pollution. Batch adsoprtion studies were carried out to evaluate the potentiality of ba-gases. Various parameters such as initial dye concentration, pH as well as temperature of the system were studied. The adsorption was found to fallow first order kinetics and intraparticle difussion is the date controlling step. The adsorption data indicates that the process is sponatenous and exothermic in nature. Langmuir adsorption isotherms was found to be well suited for the system, which shows monolayer adsorption.

Congo Red adsorption from an aqueous solution on Ferronia elefuntum fruit shell (FEFS) has been studied experimentally using the batch adsorption method. The operating variables are pH, initial dye concentration contact time. Adsorption isotherm (Langmuir and Freundlich) and kinetics model were studied. The adsorption capacity of FEFS was found to increasing with increase in temperature. Thermodynamics parameters such as “G, “H, and “S for adsorption were evaluated. Adsorption of Congo Red on FEFS found to be endothermic process. The aim of present work is to study the effectiveness of the adsorbent dyes from their aqueous solution and the removal of color from textile and various industrial waste water.

Methylene blue adsorption from an aqueous solution on to Ferronia elefuntum fruit shell (FEFS) has been studied experimentally using the batch adsorption method. The operating variables studied are pH, initial dye concentration contact time. Adsorption isotherm (Langmuir and Freundlich) and kinetics model were studied. The adsorption capacity of FEFS was found to increasing with increase in temperature, thermodynamics parameters such as Delta G, Delta H and Delta S for adsorption were evaluated. Adsorption of methylene blue on FEFS found to be endothermic process. The aim of present work is to study the effectiveness of the adsorbent to remove dyes from their aqueous solution and the removal of colour from textile and various industrial wastewater.

Methylene Blue adsorption from an aqueous solution on to Alangium salvifolium Tree Bark (ASTB) has been studied experimentally using the batch adsorption method. The operating variables studied are pH, initial dye concentration contact time. Adsorption isotherm (Langmuir and Freundlich) and kinetics model were studied. The adsorption capacity of ASTB was found to increasing with in temperature. Thermodynamics parameters such as ΔG, ΔH and ΔS for adsorption were evaluated. Adsorption of Methylene Blue on ASTB found to be endothermic process. The aim of present work is to study the effectiveness of the adsorbent to remove dyes from their aqueous solution and the removal of color from textile and various industrial waste water.

The studies on removal of Vanadium were conducted using Granulated Activated Carbon (GAC) in combination with Chelating agents. Ethylene di-amine Tetra Acetic Acid (EDTA) and Nitrilo Tri Acetic Acid (NTA) at 25oC. The adsorption Efficiency was studied in the pH range of 2-8. The results reveals that Langmuir and Freundlich isotherms are followed during adsorption process with the chelating agents under study. The granulated activated carbon (GAC) loaded with Ethylene di-amine tetra acetic acid (EDTA) shows greater adsorptive capacity as compared to granulated activated carbon (GAC) loaded with the chelating agent, Nitrilo-Tri-acetic acid (NTA).