01850nas a2200205   4500008004100000022001400041245009400055210006900149260007100218300001600289490000700305520106900312100003201381700002401413700002101437700001701458700002501475700002201500856012201522       2015                        eng d  a0888-588500aDevelopment of newer adsorbents: activated carbons derived from carbonized cassia fistula0 aDevelopment of newer adsorbents activated carbons derived from c  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcDEC  a11844-118570 v543 a<p>Development of newer adsorbent materials, especially from biomass, is most crucial to sustain growth of otherwise well established adsorption processes that already have hundreds of commercial adsorbents in practice. In the present study, newer adsorbents and their potential-carbonaceous adsorbents derived from the whole fruit of Cassia fistula (Golden shower) have been reported for applications in environmental pollution control using natural, renewable biomass as precursor. The potential of different forms of the derived adsorbents produced by thermal and chemical activation was examined for two representative cases, desulfurization of transportation fuels and wastewater treatment. The adsorbents were characterized by FTIR, XRD, XPS, and SEM techniques that indicate specific characteristics useful as an adsorbent. A successful application in the real industrial wastewater treatment and comparison with well recognized commercial adsorbents clearly highlights the utility of the developed newer adsorbents in separation science and technology.</p>1 aSorokhaibam, Laxmi, Gayatri1 aBhandari, Vinay, M.1 aSalvi, Monal, S.1 aJain, Saijal1 aHadawale, Snehal, D.1 aRanade, Vivek, V.  uhttps://library.ncl.res.in/content/development-newer-adsorbents-activated-carbons-derived-carbonized-cassia-fistula-002300nas a2200253   4500008004100000022001400041245010400055210006900159260007900228300001200307490000700319520138300326653001601709653001401725653001601739653001301755653002501768100002201793700003201815700002401847700002101871700002201892856013201914       2016                        eng d  a2194-574800aDifferentiating process performance of various coagulants in removal of congo red and orange G dyes0 aDifferentiating process performance of various coagulants in rem  aGENTHINER STRASSE 13, D-10785 BERLIN, GERMANYbWALTER DE GRUYTER GMBHcFEB  a195-2110 v143 a<p>Two refractory azo dyes-Congo red and Orange G, especially at high concentrations were subjected to coagulation with different conventional coagulants and newer formulations developed from Aluminum sulfate, Iron (III) chloride, Aluminium chloride, Poly diallydimethylammonium chloride (Poly DADMAC) and Poly Aluminium Chloride (PAC). The highest COD reduction of 99 % was obtained with PAC SAB 18 (Powder Grade PAC) for Congo red at pH 4.5 while the color removal of 99 % was achieved with almost all the coagulants in the present study at specific pH within 3-8. The optimum dose for the iron-based coagulant is 200 mg/L while that of aluminum-based coagulants and PAC is 150-200 mg/L. Results showed that Orange G was more difficult to remove with a maximum COD removal of 65 % and 35 % color removal using various formulations. The combinational formulations of inorganic-inorganic and inorganic- organic produced a substantial enhancement in COD and color removal and reduced sludge. PAC-Fe30/70 produces the minimum sludge of 50 mL/g on Congo red. pH in the range 3-9 showed high reductions in COD and color (90-99 %) for Congo red while jerky rise in COD and color reduction was observed in the case of Orange G after pH 9. An attempt to understand the dye coagulation mechanism has been made based on the specific difference in dye structure and cation speciation.</p>10acoagulation10aCongo red10adye removal10aOrange G10aWastewater treatment1 aPrajapati, Kavita1 aSorokhaibam, Laxmi, Gayatri1 aBhandari, Vinay, M.1 aKilledar, D., J.1 aRanade, Vivek, V.  uhttps://library.ncl.res.in/content/differentiating-process-performance-various-coagulants-removal-congo-red-and-orange-g-dyes-0