http://nopr.niscair.res.in/handle/123456789/12935 <b>Special Issue on Genomic Sciences: Recent Trends</b> Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/12973 Title: Separation of proteins and toxic heavy metal ions from aqueous solution by CA / APES blend ultafiltration membranes <br/> <br/>Authors: Kalaivizhi, R; Raj, S Anitha; Mohan, D <br/> <br/>Abstract: This study presents preparation of cellulose acetate (CA) and aminated polyethersulfone (APES) blend ultrafilrtation membranes by precipitation phase inversion technique in various polymer blend compositions in the presence / absence of PEG 600. Prepared membranes were used for rejection of proteins (bovine serum albumin, egg albumin, pepsin, and trypsin). Toxic heavy metal ions [Cu(II), Zn(II), and Cd(II)] from dilute aqueous solutions were subjected to separation by blend membranes. On increasing APES concentrations, rejection of proteins and metal ions decreases, whereas permeate flux has an increasing trend. Extent of proteins separation was found to be directly proportional to molecular weight of protein. CA / APES blend ultrafilration membranes demonstrated better performance compared to the membranes prepared from pure cellulose acetate. <br/> <br/>Page(s): 996-1001 http://nopr.niscair.res.in/handle/123456789/12972 Title: Removal of NOM using ternary ultrafiltration blend membranes <br/> <br/>Authors: Raj, S Anitha; Jayalakshmi, A; Mohan, D <br/> <br/>Abstract: This study presents removal of residual natural organic matter (NOM) from drinking water by ultrafiltration (UF). Three different UF membranes were prepared by phase inversion technique and membranes were subjected to compaction followed by filtration, taking bovine serum albumin (BSA) as a model for NOM at various pH. Total organic carbon content of feed water was found to be 100 ppm. <br/> <br/>Page(s): 992-995 http://nopr.niscair.res.in/handle/123456789/12971 Title: Biodecolourization of azo dyes using <i>Phanerochaete chrysosporium</i>: Effect of culture conditions and enzyme activities <br/> <br/>Authors: Pakshirajan, Kannan; Jaiswal, Shashank; Das, Ratul Kumar <br/> <br/>Abstract: This study presents effect of culture conditions [temp. (28-39^oC) & agitation speed (0-200 rpm)] on biodecolourization of azo dyes [Direct Red - 80 (DR-80) & Mordant Blue – 9 (MB-9)] over an initial concentration range of 10-100 mg/l using white rot fungus, <i>Phanerochaete chrysosporium </i>in batch shake flasks. Optimum values of temperature & agitation speed, respectively, for dye decolourization were found to be: DR-80, 39^oC & 200 rpm; and MB-9, 37^oC & 150 rpm. Both dyes were best removed at the least initial concentration (10 mg/l). Employing Arrhenius equation, activation energies for decolourization of dyes were estimated to be: DR-80, 32.67; and MB-9, 39.12 kJ/mol. Maximum enzyme activities of LiP and MnP were found to be more with DR-80 than with MB-9. Study proved very good potential of ligninase producing fungus in decolourization of industrial wastewaters containing synthetic dyes. <br/> <br/>Page(s): 987-991 http://nopr.niscair.res.in/handle/123456789/12970 Title: Biodecolourization of real textile industry wastewater using white rot fungus, <i>Phanerochaete chrysosporium</i> <br/> <br/>Authors: Sangeeta, P; Kheria, Sumeet; Pakshirajan, Kannan <br/> <br/>Abstract: This study presents characterization and decolourization of wastewater using white rot fungus, Phanerochaete chrysosporium. Fungus could decolourize undiluted wastewater to an extent of only 35% in 6 days. However, when wastewater was supplemented with medium containing glucose, high decolourization efficiency ( 84%) could be achieved. Enzyme activities of lignin peroxidase (LiP) and manganese peroxidase (MnP) produced by fungus were three and ten times respectively higher with the wastewater supplemented with medium containing glucose than with pure wastewater. Thus white rot fungus proved excellent potential in decolourization of wastewater following suitable pretreatment to suit its growth and enzyme activities. <br/> <br/>Page(s): 982-986