@article{MAKHILLJEAS201914217338,
    title = {Thermally Treated Alum Sludge as Novel Adsorbent of Carbon Dioxide (CO<sub>2</sub>)},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {14},
    number = {2},
    pages = {405-414},
    year = {2019},
    issn = {1816-949x},
    doi = {jeasci.2019.405.414},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2019.405.414},
    author = {Ong Keat,Soleha Mohamat,Wan Mad Zin Wan,Jahwarhar Izuan Abdul,Anwar,Mansor,Nor Azowa,Syed Mohd Shafiq Syed and},
    keywords = {Optimization,fixed-bed,adsorption,carbon dioxide,thermally treated sludge},
    abstract = {Dewatered alum sludge from drinking water treatment plants was exploited as carbon dioxide (CO<sub>2</sub>)
adsorbent in a fixed-bed (CO<sub>2</sub>)lumn system. In this study, the effects of 6 parameters including particle size of
adsorbent, heat treatment of adsorbent, adsorbents dosage, adsorption temperature, flow rate of adsorbate and
(CO<sub>2</sub>) ncentration on the fixed-bed adsorption of (CO<sub>2</sub>) were investigated using Response Surface Methodology 2 2
(RSM). The experimental data was successfully fitted with the regression model to identify the significant
parameters and predict the optimum value parameters for maximizing (CO<sub>2</sub>) adsorption capacity. Analysis of 2
Variance (ANOVA) revealed that (CO<sub>2</sub>) ncentration was the most significant factor influenced the (CO<sub>2</sub>) adsorption capacity. The experimental data of (CO<sub>2</sub>) adsorption capacity were in a good agreement with the 2
predicted data from the regression model. The highest fixed-bed (CO<sub>2</sub>) adsorption capacity of 10.028 mmol.g 2 <sup>&#150;1</sup> (441.24 mg.g<sup>&#150;1</sup>) was achieved using 1 g of 450-500 &#956;m of 800&deg;C thermally treated alum sludge at (CO<sub>2</sub>) ncentration of 8000 mg.L<sup>&#150;1</sup> with a flow rate of 90 mL.min<sup>&#150;1</sup> at 25&deg;C. The results suggested that thermally treated
alum sludge is a promising solid adsorbent for (CO<sub>2</sub>) capture.}
    }