TY - JOUR
T1 - Interaction of biopolymer with dispersive geomaterial and its characterization
T2 - An eco-friendly approach for erosion control
AU - Mahamaya, Mahasakti
AU - Das, Sarat Kumar
AU - Reddy, Krishna R.
AU - Jain, Surabhi
N1 - Publisher Copyright:
© 2021
PY - 2021/8/20
Y1 - 2021/8/20
N2 - Addition of natural polymer or biopolymer is considered as a novel, cost-effective and eco-friendly soil modification approach mainly pertaining to erosion stability. The present study focuses on the interaction of three types of biopolymer i.e., xanthan gum, guar gum and carboxymethyl cellulose to stabilize two dispersive industrial waste materials i.e., fly ash and coal mine overburden soil. The results found that all the three biopolymers enhanced the index and geotechnical properties of fly ash and mine overburden due to their high viscosity, aggregation, adsorption and cross-linking bond formation. However, the rate of enhancement varies with the type and concentration of biopolymer. The biomodified soil were evaluated for erosion stability against wind and water by performing pinhole test, cylindrical dispersion, surface resistance and water retention test. It concluded that a very minimal fraction, 1% of biopolymer solution could mitigate the dispersiveness of the geomaterial. Additionally, the results of microscopic analysis by scanning electron microscope assist to correlate the morphological changes with the engineering properties of biomodified soil due to the interaction of soil with the long-chained biopolymers strings. Finally, leachate and cost analysis of the biopolymer modified material was assessed to evaluate the efficiency of the biomodification.
AB - Addition of natural polymer or biopolymer is considered as a novel, cost-effective and eco-friendly soil modification approach mainly pertaining to erosion stability. The present study focuses on the interaction of three types of biopolymer i.e., xanthan gum, guar gum and carboxymethyl cellulose to stabilize two dispersive industrial waste materials i.e., fly ash and coal mine overburden soil. The results found that all the three biopolymers enhanced the index and geotechnical properties of fly ash and mine overburden due to their high viscosity, aggregation, adsorption and cross-linking bond formation. However, the rate of enhancement varies with the type and concentration of biopolymer. The biomodified soil were evaluated for erosion stability against wind and water by performing pinhole test, cylindrical dispersion, surface resistance and water retention test. It concluded that a very minimal fraction, 1% of biopolymer solution could mitigate the dispersiveness of the geomaterial. Additionally, the results of microscopic analysis by scanning electron microscope assist to correlate the morphological changes with the engineering properties of biomodified soil due to the interaction of soil with the long-chained biopolymers strings. Finally, leachate and cost analysis of the biopolymer modified material was assessed to evaluate the efficiency of the biomodification.
KW - Biopolymer
KW - Coal mine overburden
KW - Dispersiveness
KW - Erosion control
KW - Fly ash
KW - Geotechnical properties
UR - http://www.scopus.com/inward/record.url?scp=85110368436&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2021.127778
DO - 10.1016/j.jclepro.2021.127778
M3 - 文章
AN - SCOPUS:85110368436
SN - 0959-6526
VL - 312
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
M1 - 127778
ER -
