TY - JOUR

T1 - Combined solar electrocoagulation and adsorption processes for Pb(II) removal from aqueous solution

AU - Hussin, F.

AU - Aroua, M.K.

AU - Szlachtac, M.

N1 - Export Date: 30 October 2019 CODEN: CENPE Correspondence Address: Hussin, F.; Research Centre for Carbon Dioxide Capture and Utilisation (CCDCU), School of Science and Technology, Sunway University, Jalan Universiti, Bandar Sunway, Malaysia; email: farihah@sunway.edu.my Funding details: Sunway University, INT-2019-SST-CCDCU-01 Funding details: Universiti Malaya, UM.C/HIR/MOHE/ENG/43 Funding text 1: We are grateful for financial support provided by High Impact Research Grant, University of Malaya ( UM.C/HIR/MOHE/ENG/43 ) and Internal Research Grant, Sunway University ( INT-2019-SST-CCDCU-01 ) Appendix A

PY - 2019/9/30

Y1 - 2019/9/30

N2 - A combination of electrocoagulation with other methods seems to have garnered much attention in the research area for the past decade to eliminate heavy metal ions from the synthetic and real wastewater effluents. Combining two various methods into a single system appears to be an efficient and promising approach for heavy metal removal, mainly due to their cost-effectiveness, simple operation and suitability for industrial applications. Solar photovoltaic systems have gained much attention because they make use of clean, renewable energy and make the treatment method cost-effective. In this regard, it is imperative to explore the potential of solar photovoltaic systems to remove heavy metals. A response surface methodology based on the central composite design (CCD) was employed to examine the effects of three independent variables such as pH, initial Pb(II) concentration and adsorbent dosage. The results indicated that the highest Pb(II) removal efficiency up to 99.88% can be achieved using the CCD model with the following optimum conditions: (1) pH: 6.01, (2) initial Pb(II) concentration: 15.00 mg/L and (3) adsorbent dosage: 2.50 g/L. Based on the results, the combined system offered an attractive alternative over the single electrocoagulation and adsorption treatment systems as it can produce high Pb(II) removal efficiency.

AB - A combination of electrocoagulation with other methods seems to have garnered much attention in the research area for the past decade to eliminate heavy metal ions from the synthetic and real wastewater effluents. Combining two various methods into a single system appears to be an efficient and promising approach for heavy metal removal, mainly due to their cost-effectiveness, simple operation and suitability for industrial applications. Solar photovoltaic systems have gained much attention because they make use of clean, renewable energy and make the treatment method cost-effective. In this regard, it is imperative to explore the potential of solar photovoltaic systems to remove heavy metals. A response surface methodology based on the central composite design (CCD) was employed to examine the effects of three independent variables such as pH, initial Pb(II) concentration and adsorbent dosage. The results indicated that the highest Pb(II) removal efficiency up to 99.88% can be achieved using the CCD model with the following optimum conditions: (1) pH: 6.01, (2) initial Pb(II) concentration: 15.00 mg/L and (3) adsorbent dosage: 2.50 g/L. Based on the results, the combined system offered an attractive alternative over the single electrocoagulation and adsorption treatment systems as it can produce high Pb(II) removal efficiency.

KW - Adsorption

KW - Central composite design

KW - Combined treatment

KW - Electrocoagulation

KW - Response surface methodology

KW - Coagulation

KW - Cost effectiveness

KW - Effluents

KW - Heavy metals

KW - Metal ions

KW - Photovoltaic cells

KW - Solar concentrators

KW - Solar power generation

KW - Surface properties

KW - Central composite designs

KW - Electro coagulations

KW - Heavy metal removal

KW - Independent variables

KW - Renewable energies

KW - Solar photovoltaic system

KW - Lead compounds

U2 - 10.1016/j.cep.2019.107619

DO - 10.1016/j.cep.2019.107619

M3 - Journal article

VL - 143

JO - Chemical Engineering and Processing: Process Intensification

JF - Chemical Engineering and Processing: Process Intensification

SN - 0255-2701

M1 - 107619

ER -