Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
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Adsorption Study of Dried Alum-sludge from a Water Treatment Plant towards Phenol Water
DOI:
10.16355/j.cnki.issn1007-9432tyut.2020.05.014
Received:
Accepted:
| Corresponding author | Institute | |
| DUAN Runbin | College of Environmental Science and Engineering, Taiyuan University of Technology |
abstract:
The objective of the research was to reuse the dried alum sludge(DAS) from a water treatment plant to remove phenol from industrial wastewater. The impact factors including sludge dosage, initial pH, adsorption time, temperature, and initial phenol concentration were explored for the effects on phenol adsorption on the basis of the characterization of the micro-structure of DAS. The results show that the adsorption removal of phenol increased with increasing dose, pH, and adsorption time and temperature and decreased with increasing initial phenol concentration. Langmuir isothermal model could more accurately describe the isothermal curve of DAS adsorption towards phenol. The maximum adsorption capacity towards phenol was 10.509 mg/g at 25 ℃. The adsorption kinetics of DAS towards phenol fit well with pseudo-second-order kinetic model. The adsorption is a spontaneous and endothermic progress along with entropy production.
Keywords:
dried alum-sludge from a water treatment plant; adsorption; phenol; industrial wastewater;