Comparative study of leaching of silver nanoparticles from fabric and effective effluent treatment

• Published in: Journal of environmental sciences (China) Vol. 24; no. 5; pp. 852 - 859
• Main Authors: Pasricha, Aneesh, Jangra, Sant Lal, Singh, Nahar, Dilbaghi, Neeraj, Sood, K.N., Arora, Kanupriya, Pasricha, Renu
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.05.2012; Delhi Public School, Dwarka, New Delh-110078i, India%Department of Bio & Nano Technology, Guru Jambheshwar University of Science & Technology, Hisar, Haryana-125001, India%CSIR-National Physical Laboratory, New Delhi-110012, India
• Subjects: AAS; Animals; anti-infective agents; Bacillus subtilis - ultrastructure; Bacteria; Biodegradation, Environmental; biosorption; Colloids; Cotton Fiber; eco-environment; effluent; Effluents; environmental impact; Fabrics; Leaching; manufacturing; Metal Nanoparticles - chemistry; Metal Nanoparticles - ultrastructure; Nanomaterials; Nanoparticles; nanosilver; Nanostructure; risk; SEM; Silver; Silver - isolation & purification; silver nanoparticles; Spectrometry, X-Ray Emission; Spectrophotometry, Ultraviolet; TEM; Textiles; washing; Waste Disposal, Fluid; wastewater treatment; Water Pollutants, Chemical - isolation & purification; Water Purification - methods; Wool; 产品发布; 污水再利用; 污水处理厂; 浸出率; 环境风险评估; 织物类型; 银纳米粒子; 面料; AAS; silver nanoparticles; effluent; eco-environment; SEM; leaching; TEM; silver nanopartlcles
• ISSN: 1001-0742; 1878-7320
• DOI: 10.1016/S1001-0742(11)60849-8

Nano silver （Agn） is employed as an active antimicrobial agent, but the environmental impact of Agn 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 Agn 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 Agn leached into the effluent for reutilization, thus preventing environmental repercussions.