Characterization of Alum Sludge for Reuse and Disposal

被引：11
作者：
Awab, Hanim [1 ]
Paramalinggam, P. T. Thanalechumi [1 ]
Yusoff, Abdull Rahim Mohd [2 ]
机构：
[1] UTM, Fac Sci, Dept Chem, Utm Skudai 81310, Johor, Malaysia
[2] UTM, Inst Environm & Water Resource Management IPASA, Utm Skudai 81310, Johor, Malaysia
来源：
MALAYSIAN JOURNAL OF FUNDAMENTAL AND APPLIED SCIENCES | 2012年 / 8卷 / 04期
关键词：
Drinking water treatment sludge; Aluminium; Iron; Hazardous material disposal;
D O I：
10.11113/mjfas.v8n4.160
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The properties of spent drinking water treatment sludge (WTS) were investigated to determine its physical and chemical properties. WTS was obtained from the Semanggar Water Treatment Plant, Kota Tinggi, Johore, Malaysia. Bulk density, particle density, porosity, surface area, particle size, moisture content, ash content, chemical composition, leachability of heavy metals, pH and the total organic carbon (TOC) were determined. Surface and other physicochemical properties were also studied using the scanning electron microscope (SEM), field emission scanning electron microscope (FESEM), Xray diffractometer (XRD), TGA, FTIR, BET single point surface area analyzer, and TOC analyzer. Results showed that the particle size, bulk density and particle density of WTS were 2-5 mu m, 0.831 +/- 0.061 g/cm(3) and 2.66 +/- 0.029 g/cm(3), respectively. The porosity was 68-69% with surface of 38.92 m(2)/g and ash content of 67%, reflecting the high TOC of 1440.37 +/- 14.71. The sludge contained 29% moisture and showed a pH value of 4.28 in solution. Analysis of acid digest indicated a high content of Al and Fe. The WTS were shown to leach very low levels of selected heavy metals.
引用
收藏
页码：251 / 255
页数：5
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