Electrochemical treatment of distillery .spentwash was carried out using different combinations of aluminum and iron electrodes in batch mode of operation. The spent wash was characterized for various parameters as pe...Electrochemical treatment of distillery .spentwash was carried out using different combinations of aluminum and iron electrodes in batch mode of operation. The spent wash was characterized for various parameters as per standard method of analysis and the treatment results were analyzed in terms of chemical oxygen demand （COD） removal efficiency o.f thespent.wash. The experiments were performed to s.tudy the effect of operating parameterssuch as current density, pH of the spent wash, agitation speed, electrolysis time and the distance between the elec- trodes on the COD removal efficiency of the spent wash. It was observed that aluminum electrodes were more suitable for treatment of distillery spent wash as compared to iron electrodes. The maximum COD removal effi- ciency of 81.3% was obtained with A1-A1 electrodes at the current density of 0.187 A.cm-2 and pH 3 for an elec-trolysis time of 2 h.展开更多
An experimental pectate lyase enzyme was used to scour knitted cotton fabric and the emphasis was on pectin removal.Using an enzyme dosage of 0.2 g/L at temperature 55℃ and pH 6.35 for 30 min,good scouring properties...An experimental pectate lyase enzyme was used to scour knitted cotton fabric and the emphasis was on pectin removal.Using an enzyme dosage of 0.2 g/L at temperature 55℃ and pH 6.35 for 30 min,good scouring properties were obtained.When appropriate concentrations of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)and CaCl2 were added,the percentage pectin removal improved significantly.展开更多
文摘Electrochemical treatment of distillery .spentwash was carried out using different combinations of aluminum and iron electrodes in batch mode of operation. The spent wash was characterized for various parameters as per standard method of analysis and the treatment results were analyzed in terms of chemical oxygen demand （COD） removal efficiency o.f thespent.wash. The experiments were performed to s.tudy the effect of operating parameterssuch as current density, pH of the spent wash, agitation speed, electrolysis time and the distance between the elec- trodes on the COD removal efficiency of the spent wash. It was observed that aluminum electrodes were more suitable for treatment of distillery spent wash as compared to iron electrodes. The maximum COD removal effi- ciency of 81.3% was obtained with A1-A1 electrodes at the current density of 0.187 A.cm-2 and pH 3 for an elec-trolysis time of 2 h.
基金Supported by the Programfor Changjiang Scholors and Innovative Research Teamin University(No.IRT0526)
文摘An experimental pectate lyase enzyme was used to scour knitted cotton fabric and the emphasis was on pectin removal.Using an enzyme dosage of 0.2 g/L at temperature 55℃ and pH 6.35 for 30 min,good scouring properties were obtained.When appropriate concentrations of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)and CaCl2 were added,the percentage pectin removal improved significantly.
