Comparative study of leaching of silver nanoparticles from fabric and effective effluent treatment.
Nano silver (Ag(n)) is employed as an active antimicrobial agent, but the environmental impact of Ag(n) released from commercial products is unknown. The quantity of nanomaterial released from consumer products during use should be determined to assess the environmental risks of advancement of nanotechnology. This work investigated the amount of silver released from three different types of fabric into water during washing. Three different types of fabric were loaded with chemically synthesized Ag nanoparticles and washed repeatedly under simulated washing conditions. Variable leaching rates among fabric types suggest that the manufacturing process may control the release of silver reaching the waste water treatment plants. In an attempt to recover the Ag(n) for reutilization and to save it from polluting water, the effluents from the wash were efficiently treated with bacterial strains. This treatment was based on biosorption and was very efficient for the elimination of silver nanoparticles in the wash water. The process ensured the recovery of the Ag(n) leached into the effluent for reutilization, thus preventing environmental repercussions.
Delhi Public School, Dwarka, New Delh-110078i, India. ap1094@gmail.com
Aneesh
A
Pasricha
Sant Lal
SL
Jangra
Nahar
N
Singh
Neeraj
N
Dilbaghi
K N
KN
Sood
Kanupriya
K
Arora
Renu
R
Pasricha
D000818:Animals; D001412:Bacillus subtilis / Q000648:ultrastructure; D001673:Biodegradation, Environmental; D003102:Colloids; D032561:Cotton Fiber; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D012834:Silver / Q000302:isolation & purification*; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D013784:Textiles; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*; D014935:Wool
D003102:Colloids; D014874:Water Pollutants, Chemical; D012834:Silver