TY  - JOUR
VL  - 51
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891912583&doi=10.1016%2fj.watres.2013.12.024&partnerID=40&md5=9bc71441cb030dba6b0891b3f6f8fa35
JF  - Water Research
A1  - Isa, M.H.
A1  - Ezechi, E.H.
A1  - Ahmed, Z.
A1  - Magram, S.F.
A1  - Kutty, S.R.M.
Y1  - 2014///
KW  - Adsorption; Borate minerals; Boron; Coagulation; Current density; Free energy; Kinetics; Mineralogy; Produced Water; Reaction kinetics; Recovery; Surface properties; Thermodynamics
KW  -  Adsorption free energy; Adsorption kinetics; Boron removal efficiency; Electro coagulations; Electrocoagulation flocs; Hydrothermal mineralization; Pseudo-second-order kinetic models; Response surface methodology
KW  -  Chemicals removal (water treatment)
KW  -  boron
KW  -  adsorption; boron; coagulation; concentration (composition); electrochemical method; experimental design; flocculation; hydrothermal activity; mineralization; pH; pollutant removal; reaction kinetics; thermodynamics; wastewater; water treatment
KW  -  adsorption kinetics; aqueous solution; article; density; electrocoagulation; experimental design; flotation; kinetics; mineralization; pH; priority journal; response surface method; sedimentation; thermodynamics; waste water management
KW  -  Adsorption kinetics; Boron; Electrocoagulation; Hydrothermal mineralization; Produced water; Response surface methodology; Thermodynamics
KW  -  Adsorption; Boron; Electrocoagulation; Kinetics; Models
KW  -  Chemical; Recycling; Waste Water; Water Pollutants
KW  -  Chemical; Water Purification
ID  - scholars4356
N2  - This work investigated the removal of boron from wastewater and its recovery by electrocoagulation and hydrothermal mineralization methods respectively. The experimental design was developed using Box-Behnken Model. An initial study was performed based on four preselected variables (pH, current density, concentration and time) using synthetic wastewater. Response surface methodology (RSM) was used to evaluate the effect of process variables and their interaction on boron removal. The optimum conditions were obtained as pH 6.3, current density 17.4mA/cm2, and time 89min. At these applied optimum conditions, 99.7 boron removal from an initial concentration of 10.4mg/L was achieved. The process was effectively optimized by RSM with a desirability value of 1.0. The results showed that boron removal efficiency enhanced with increase in current density and treatment time. Removal efficiency also increased when pH was increased from 4 to 7 and subsequently decreased at pH 10. Adsorption kinetics study revealed that the reaction followed pseudo second order kinetic model; evidenced by high correlation and goodness of fit. Thermodynamics study showed that mechanism of boron adsorption was chemisorption and the reaction was endothermic in nature. Furthermore, the adsorption process was spontaneous as indicated by negative values of the adsorption free energy. Treatment of real produced water using electrocoagulation resulted in 98 boron removal. The hydrothermal mineralization study showed that borate minerals (Inyoite, Takadaite and Nifontovite) can be recovered as recyclable precipitate from electrocoagulation flocs of produced water. © 2013 Elsevier Ltd.
EP  - 123
SN  - 00431354
PB  - Elsevier Ltd
SP  - 113
TI  - Boron removal by electrocoagulation and recovery
N1  - cited By 141
AV  - none
ER  -