Adsorptive component of produced water(PW)coagulation using Tympanotonos Fuscatus coagulant(TFC)was studied.Influence of the following parameters:pH,coagulant dose,settling time,and temperature were investigated.The f...Adsorptive component of produced water(PW)coagulation using Tympanotonos Fuscatus coagulant(TFC)was studied.Influence of the following parameters:pH,coagulant dose,settling time,and temperature were investigated.The functional group,crystalline nature,morphological observation and thermal characteristics of the sample were evaluated.Equilibrium data were analyzed using Langmuir,Freundlich,Temkin,Frumkin,and Dubinin-Radushkevich(D-R)adsorption isotherms.The kinetics data were fitted to reversible first order,pseudo-first-order,pseudo-second-order,elovich,intra-particle diffusion and Boyd kinetic models.Adsorption Gibbs energy,enthalpy and entropy were evaluated.Equilibrium data best fitted the Langmuir isotherm(R^2>0.99;X^2<1.6;SSE<1.6).Reversible first order model correlated best to the kinetics data.The values of process average Gibb's free energy,enthalpy and entropy were 30.35,27.88 and 0.1891 kJ/mol,respectively.The process was spontaneous,feasible and endothermic in nature.The maximum efficiency of 83.1%was favored at pH 2.0.This study indicated significant adsorptive component,while using Tympanotonos Fuscatus extract as readily available,renewable,ecofriendly bio e coagulant for efficient treatments of PW.展开更多
基金Chemical Engineering Department,Nnamdi Azikiwe University,Awka,NigeriaWater Resources Center,Civil and Environmental Engineering Department,Texas Tech University,Lubbock,Texas,USAFulbright Program,Council for International Exchange of Scholars(CIES),Washington,DC 20005-2403 USA.
文摘Adsorptive component of produced water(PW)coagulation using Tympanotonos Fuscatus coagulant(TFC)was studied.Influence of the following parameters:pH,coagulant dose,settling time,and temperature were investigated.The functional group,crystalline nature,morphological observation and thermal characteristics of the sample were evaluated.Equilibrium data were analyzed using Langmuir,Freundlich,Temkin,Frumkin,and Dubinin-Radushkevich(D-R)adsorption isotherms.The kinetics data were fitted to reversible first order,pseudo-first-order,pseudo-second-order,elovich,intra-particle diffusion and Boyd kinetic models.Adsorption Gibbs energy,enthalpy and entropy were evaluated.Equilibrium data best fitted the Langmuir isotherm(R^2>0.99;X^2<1.6;SSE<1.6).Reversible first order model correlated best to the kinetics data.The values of process average Gibb's free energy,enthalpy and entropy were 30.35,27.88 and 0.1891 kJ/mol,respectively.The process was spontaneous,feasible and endothermic in nature.The maximum efficiency of 83.1%was favored at pH 2.0.This study indicated significant adsorptive component,while using Tympanotonos Fuscatus extract as readily available,renewable,ecofriendly bio e coagulant for efficient treatments of PW.
