Papers by PUSHPENDRA KUSHWAHA
The present study aims to understand the effectiveness of using Amla Wood Sawdust (AWS) for the r... more The present study aims to understand the effectiveness of using Amla Wood Sawdust (AWS) for the removal of hexavalent Chromium metal and to obtain an optimum condition for maximum extraction. AWS was prepared using waste barks of Amla tree which was then dried, ground and activated to prepared the low cost adsorbent. Stock solution of chromium was prepared in the laboratory using potassium dichromate and distilled water and the pH of the stock solution was varied using sulphuric acid. The effects of contact time, pH value of stock solution and adsorbent dosage were studied under batch mode of operation. Experimental data revealed that hexavalent chromium concentration in synthetic wastewater was reduced up to 83.2% at suitable conditions of contact time, pH and adsorbent concentration. Keywords— Adsorption, Chromium (VI), Synthetic Wastewater, Amla Wood Sawdust,Heavy metals.
Materials Today: Proceedings
Materials Today: Proceedings
Environmental Science and Pollution Research
CRC Press eBooks, Aug 1, 2022
Adsorption of COD (Chemical Oxygen Demand) from synthetic tannery effluent was investigated by us... more Adsorption of COD (Chemical Oxygen Demand) from synthetic tannery effluent was investigated by using Neem Sawdust with several parameters including contact time, pH of solution and adsorbent dosages. Neem Sawdust (NS) was the effective for removal efficiency reached 78% at contact time 120 minute and pH 2. The results investigated that COD (Chemical Oxygen Demand) loaded Neem Sawdust (NS) biomass can be disposed of by incineration or used in furnace as a fuel. The results investigated that Neem Sawdust can be used as a good adsorbent for the removal of COD (Chemical Oxygen Demand). Thus, the adsorbents prepared from Neem Sawdust (NS) could be used for removal of COD from synthetic tannery effluent.
This research deals with the reduction of Chromium and other pollutants like Chemical Oxygen Dema... more This research deals with the reduction of Chromium and other pollutants like Chemical Oxygen Demand (COD), Total Solid (TS), Total Dissolved Solid (TDS) and Conductivity from the tannery effluent. The effect of several parameters including contact time, pH value and adsorbent dosages. From the experiment results, it was found that Chromium ions concentration in tannery effluent was reduced to the level of 61mg/l, COD was removed 28mg/l, TS reduction was found to be at level of 282mg/l, TDS removed was at level of 316mg/l and Conductivity increased was 9.40mS to 18.1mS. The extent of adsorption was studied as a function of PH, contact time, adsorbent dose, and initial adsorbed concentration. Optimum results were found to be 90 minutes, 2, and 6g/l for time contact, PH, and adsorbent dose respectively. Thus it has been proved that the Banyan Sawdust can be used as an adsorbent for the adsorption of various pollutants from tannery effluent..
International Journal of Chemical Studies, 2015
Adsorption of chromium ions from tannery effluent was studied by using Neem Sawdust with several ... more Adsorption of chromium ions from tannery effluent was studied by using Neem Sawdust with several parameters including contact time, pH of solution and adsorbent dosages. Neem Sawdust (NS) was the effective for removal efficiency reached 84% at contact time 120 minute and pH 2. The results investigated that chromium loaded Neem Sawdust (NS) biomass can be disposed off by incineration or used in furnace as a fuel. The results investigated that Neem Sawdust can be used as a good adsorbent for the removal of Cr(VI). Thus, the adsorbents prepared from Neem Sawdust (NS) could be used for removal of chromium ions from tannery effluent.
Fouling and subsequent cleaning study of spiral wound reverse osmosis (RO) membrane modules were ... more Fouling and subsequent cleaning study of spiral wound reverse osmosis (RO) membrane modules were done. The membrane modules consisted of polyamide (PA) with cross sectional area of 1m2. RO membrane fouled by polysaccharides equivalent to sodium alginate (SA), with different doses of SA (200, 300, 500 ppm) was and calcium ions (0.5 to 2 mM) at various operating conditions. Initial flux was the 1.132×10-5m3/m2 at 1379 kPa and it decline to 1.02×10-5m3/m2.s after 5 h. Fouled membrane modules were cleaned by using different chemical agents, such as, anionic surfactant, e.g., sodium dodecyl sulphate (SDS) and metal chelating agent e.q., ethylenediaminetetraacetic acid (EDTA). Flow rate of 9 lpm and transmembrane pressure drop of 69 kPa were used to fouled membrane modules. The cleaning performance of membrane module in terms of flux recovery with variation of cleaning agent dose was studied. It was observed that with increase of operating time and cleaning agent dose, cleaning efficiency...
International journal of applied research, 2015
The surface water has been largely contaminated due to the growth of tannery industries in India.... more The surface water has been largely contaminated due to the growth of tannery industries in India. One of the most toxic chemical which is dissolving into surface water is hexavalent Chromium. This research deals with the reduction of Chromium and other pollutants like Chemical Oxygenn Demand (COD), Total Solid (TS), Total Dissolved Solid (TDS) and Conductivity from the tannery effluent. The effect of several parameters including contact time, pH value and adsorbent dosages. From the experiment results, it was found that Chromium ions concentration in tannery effluent was reduced to the level of 129mg/l, COD was removed 42mg/l, TS reduction was found to be at level of 315mg/l, TDS removed was at level of 303mg/l and Conductivity increased was 9.40mS to 18.2mS. Thus it has been proved that the Amla Sawdust can be used as an adsorbent for the adsorption of various pollutants from tannery effluent.
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Papers by PUSHPENDRA KUSHWAHA