Feasibility study on cross-linked biopolymeric concrete encapsulating selenium glass wastes.
Feasibility study was conducted to encapsulate the selenium (Se) contained in glass waste, using the biopolymer-modified concrete. Biopolymer has unique characteristics to provide the chemical sites to metals or toxic compounds through the three-dimensional cross-linked structure. Very minute amount of biopolymer enhanced the characteristics of cementitious material. The resulting biopolymeric composite with selenium glass waste showed 20% higher compressive strength than ordinary concrete and the lower leaching concentration than the equipment detection limit. For a qualitative measurement, X-ray diffraction (XRD; X-ray powder diffractogram) was used to characterize the biopolymeric concrete. The optimum waste content percentage with appropriate biopolymer concrete mixture ratio was identified for its possible commercial use.
Soni Astani Department of Civil and Environmental Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089-2531, USA. Derekkim10@yahoo.com
Daeik
D
Kim
Joon-Seok
JS
Park
Teh Fu
TF
Yen
D001704:Biopolymers / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry; D003252:Construction Materials / Q000032:analysis*; D005685:Galactans / Q000737:chemistry; D007220:Industrial Waste / Q000032:analysis; D008351:Mannans / Q000737:chemistry; D015394:Molecular Structure; D053149:Plant Gums / Q000737:chemistry; D011135:Polysaccharides, Bacterial / Q000737:chemistry; D012037:Refuse Disposal / Q000379:methods*; D012643:Selenium / Q000737:chemistry*
D001704:Biopolymers; D005685:Galactans; D007220:Industrial Waste; D008351:Mannans; D053149:Plant Gums; D011135:Polysaccharides, Bacterial; D048271:Chitosan; C007894:guar gum; D012643:Selenium; C002563:xanthan gum