Sorption behavior of phosphate on an MSWI bottom slag and sewage sludge co-sintered adsorbent
Suyang Ge a, b, Hui Zhang a,*, Hai Yeb,** , Houhu Zhang b, Keqiang Zhao b, Qinfang Sun b, Rui Wu b, Wenping Cao c
a College of Economics and Management, Nanjing Forestry University, Nanjing 210042, P.R. China
b Nanjing Institute of Environmental Science, Ministry of Environmental Protection, Nanjing 210042, P.R. China
c School of Environmental Engineering, Xuzhou Institute of Technology. Xuzhou, Jiangsu, 221111, P.R. China
* Corresponding author:
School of Environmental Science and Engineering, Nanjing Forestry University, Nanjing 210042, P.R. China
**Co-corresponding author:
Nanjing Institute of Environmental Sciences, China Ministry of Environmental Protection. 210042, Nanjing, P.R. China
Orthogonal test design:
An orthogonal design (OA9 34 matrix) experiment was conducted to determine the best conditions for sintering bottom slag and sewage sludge. Three levels of three factors (the mass ratio of bottom slag to sewage sludge, the sintering temperature, and time, ) was designed by date processing system (DPS) software to optimize the parameters of sintering conditions for synthesized adsorbent on phosphate sorption (Table S1).
Table S1: Effects of sintering conditions for synthesized adsorbent on phosphate sorption using orthogonal design.
No. / Sintering temperature (°C) / Sintering time (min) / The mass ratio of bottom slag to sewage sludge / Particle size (mm) / Phosphate sorption (mg/kg)*1 / 900 / 10 / 1:0 / 5~10 / 198.5
2 / 900 / 15 / 3:1 / 10~15 / 216.5
3 / 900 / 20 / 1:1 / 15~20 / 187.4
4 / 1000 / 10 / 1:1 / 10~15 / 197.6
5 / 1000 / 15 / 1:0 / 15~20 / 193.6
6 / 1000 / 20 / 3:1 / 5~10 / 195.8
7 / 1100 / 10 / 3:1 / 15~20 / 165.5
8 / 1100 / 15 / 1:1 / 5~10 / 24.4
9 / 1100 / 20 / 1:0 / 10~15 / 10.1
*, solutions at the initial contents of 10 mg L-1 for phosphate were tested.
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