TY - JOUR
T1 - A facile manufacture of highly adsorptive aggregates using steel slag and porous expanded silica for phosphorus removal
AU - Wu, Fan
AU - Yu, Q.L. (Qingliang)
AU - Gauvin, Florent
AU - Brouwers, H.J.H. (Jos)
N1 - Funding Information:
This work was funded by China Scholarship Council (CSC) Fund (Grant No. 201806240037) and Eindhoven University of Technology. The authors gratefully thank Ing. Anneke Delsing for the chemical test and analysis, Mr. J.G. van Gilst from Vibers (The Netherlands), Dr. P. Spiesz from ENCI (The Netherlands) and Prof. dr. S.R. van der Laan from TATA Steel (The Netherlands) for the materials supply.
Funding Information:
This work was funded by China Scholarship Council (CSC) Fund (Grant No. 201806240037) and Eindhoven University of Technology. The authors gratefully thank Ing. Anneke Delsing for the chemical test and analysis, Mr. J.G. van Gilst from Vibers (The Netherlands), Dr. P. Spiesz from ENCI (The Netherlands) and Prof. dr. S.R. van der Laan from TATA Steel (The Netherlands) for the materials supply.
Publisher Copyright:
© 2020
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - Natural adsorptive materials are mainly based on physical adsorption and have limited adsorption capacity. Artificial adsorptive aggregates lead to great potential in improving water quality for water treatment. This study aims to develop a porous and sustainable adsorptive aggregate combining both chemical and physical adsorption capacities. Industrial by-product steel slag (SS) powder is used in conjunction with porous expanded silicate (ES) powder applying a non-sintered pelletizing method for producing sustainable high adsorptive aggregates, and bio-based miscanthus (M) is used to further increase its permeability and porosity. The results show that the bulk density of the resulting adsorptive aggregates varies from 570 kg/m3 to 882 kg/m3, with a bulk crushing strength of up to 5.1 MPa. Moreover, all adsorptive aggregates have outstanding resistance to salt and freeze-thaw cycles. Phosphorus (P) adsorption tests show that the adsorptive aggregates remove the P in aqueous solution (168 mg/L), with an adsorption capacity of 4.2 mg/g. The research demonstrates that sustainable high adsorptive aggregates with good mechanical properties can be produced applying the facile pelletizing method, suitable for the application in the field of water treatment such as adsorptive concrete, constructed wetlands and rainwater gardens.KeywordsAdsorptive aggregatePelletizingSteel slagExpanded silicaMiscanthusWater treatment
AB - Natural adsorptive materials are mainly based on physical adsorption and have limited adsorption capacity. Artificial adsorptive aggregates lead to great potential in improving water quality for water treatment. This study aims to develop a porous and sustainable adsorptive aggregate combining both chemical and physical adsorption capacities. Industrial by-product steel slag (SS) powder is used in conjunction with porous expanded silicate (ES) powder applying a non-sintered pelletizing method for producing sustainable high adsorptive aggregates, and bio-based miscanthus (M) is used to further increase its permeability and porosity. The results show that the bulk density of the resulting adsorptive aggregates varies from 570 kg/m3 to 882 kg/m3, with a bulk crushing strength of up to 5.1 MPa. Moreover, all adsorptive aggregates have outstanding resistance to salt and freeze-thaw cycles. Phosphorus (P) adsorption tests show that the adsorptive aggregates remove the P in aqueous solution (168 mg/L), with an adsorption capacity of 4.2 mg/g. The research demonstrates that sustainable high adsorptive aggregates with good mechanical properties can be produced applying the facile pelletizing method, suitable for the application in the field of water treatment such as adsorptive concrete, constructed wetlands and rainwater gardens.KeywordsAdsorptive aggregatePelletizingSteel slagExpanded silicaMiscanthusWater treatment
KW - Adsorptive aggregate
KW - Expanded silica
KW - Miscanthus
KW - Pelletizing
KW - Steel slag
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=85094837686&partnerID=8YFLogxK
U2 - 10.1016/j.resconrec.2020.105238
DO - 10.1016/j.resconrec.2020.105238
M3 - Article
SN - 0921-3449
VL - 166
JO - Resources, Conservation and Recycling
JF - Resources, Conservation and Recycling
M1 - 105238
ER -