Sulphate removal from acid rock drainage using steel slag

F. Ntuli; N. P. Magwa

doi:10.1088/1755-1315/191/1/012116

Sulphate removal from acid rock drainage using steel slag

F. Ntuli, N. P. Magwa

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

The removal of sulphates from acid rock drainage (ARD) using basic oxygen furnace (BOF) slag was investigated. The results indicated that sulphates removal using BOF-slag increased with temperature increase (25-45°C), time (0-24 h) and solid loading (2-12 g BOF-slag/50 ml ARD). The maximum sulphate removal was 65% when 12 g BOF-slag/100 ml ARD was used at 45C and 24 h residence time. Adsorption followed the Langmuir isotherm with maximum adsorption capacities at 25, 35 and 45°C of 1.949, 1.967, 4.078 mg/g respectively and R_L values less than 0.3, indicating adsorption was thermodynamically favourable. The adsorption kinetics followed the pseudo second order kinetics.

Original language	English
Article number	012116
Number of pages	6
Journal	IOP Conference Series: Earth and Environmental Science
Volume	191
Issue number	1
DOIs	https://doi.org/10.1088/1755-1315/191/1/012116
Publication status	Published - Nov 5 2018
Event	4th International Conference on Water Resource and Environment, WRE 2018 - Kaohsiung City, Taiwan, Province of China Duration: Jul 17 2018 → Jul 21 2018

All Science Journal Classification (ASJC) codes

General Environmental Science
General Earth and Planetary Sciences

Access to Document

10.1088/1755-1315/191/1/012116

Cite this

@article{5c73654ad604431cb869b02f0830846a,

title = "Sulphate removal from acid rock drainage using steel slag",

abstract = "The removal of sulphates from acid rock drainage (ARD) using basic oxygen furnace (BOF) slag was investigated. The results indicated that sulphates removal using BOF-slag increased with temperature increase (25-45°C), time (0-24 h) and solid loading (2-12 g BOF-slag/50 ml ARD). The maximum sulphate removal was 65% when 12 g BOF-slag/100 ml ARD was used at 45C and 24 h residence time. Adsorption followed the Langmuir isotherm with maximum adsorption capacities at 25, 35 and 45°C of 1.949, 1.967, 4.078 mg/g respectively and RL values less than 0.3, indicating adsorption was thermodynamically favourable. The adsorption kinetics followed the pseudo second order kinetics.",

author = "F. Ntuli and Magwa, {N. P.}",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; 4th International Conference on Water Resource and Environment, WRE 2018 ; Conference date: 17-07-2018 Through 21-07-2018",

year = "2018",

month = nov,

day = "5",

doi = "10.1088/1755-1315/191/1/012116",

language = "English",

volume = "191",

journal = "IOP Conference Series: Earth and Environmental Science",

issn = "1755-1307",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Sulphate removal from acid rock drainage using steel slag

AU - Ntuli, F.

AU - Magwa, N. P.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2018/11/5

Y1 - 2018/11/5

N2 - The removal of sulphates from acid rock drainage (ARD) using basic oxygen furnace (BOF) slag was investigated. The results indicated that sulphates removal using BOF-slag increased with temperature increase (25-45°C), time (0-24 h) and solid loading (2-12 g BOF-slag/50 ml ARD). The maximum sulphate removal was 65% when 12 g BOF-slag/100 ml ARD was used at 45C and 24 h residence time. Adsorption followed the Langmuir isotherm with maximum adsorption capacities at 25, 35 and 45°C of 1.949, 1.967, 4.078 mg/g respectively and RL values less than 0.3, indicating adsorption was thermodynamically favourable. The adsorption kinetics followed the pseudo second order kinetics.

AB - The removal of sulphates from acid rock drainage (ARD) using basic oxygen furnace (BOF) slag was investigated. The results indicated that sulphates removal using BOF-slag increased with temperature increase (25-45°C), time (0-24 h) and solid loading (2-12 g BOF-slag/50 ml ARD). The maximum sulphate removal was 65% when 12 g BOF-slag/100 ml ARD was used at 45C and 24 h residence time. Adsorption followed the Langmuir isotherm with maximum adsorption capacities at 25, 35 and 45°C of 1.949, 1.967, 4.078 mg/g respectively and RL values less than 0.3, indicating adsorption was thermodynamically favourable. The adsorption kinetics followed the pseudo second order kinetics.

UR - http://www.scopus.com/inward/record.url?scp=85058098592&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85058098592&partnerID=8YFLogxK

U2 - 10.1088/1755-1315/191/1/012116

DO - 10.1088/1755-1315/191/1/012116

M3 - Conference article

AN - SCOPUS:85058098592

SN - 1755-1307

VL - 191

JO - IOP Conference Series: Earth and Environmental Science

JF - IOP Conference Series: Earth and Environmental Science

IS - 1

M1 - 012116

T2 - 4th International Conference on Water Resource and Environment, WRE 2018

Y2 - 17 July 2018 through 21 July 2018

ER -

Sulphate removal from acid rock drainage using steel slag

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this