• Clean Technology
• /
• v.19 no.4
• /
• pp.459-463
• /
• 2013

Recent rapidly growth in nanotechnolgies is promised novel benefits through the exploitation of their unique industrial and biomedical applications. In addition, these nanomaterials and nano-consumer products have increased in quantity per year, and thus their uncontrolled release into the environment is anticipated to grow dramatically in future. Many papers for cytotoxicity of nanomaterials have been already reported, and thus government supports has funded to various research topics for nanosafety. Herein, we analyzed the importance and performance of nanosafety researches and tried to show the research direction where we have to go.

• Clean Technology
• /
• v.18 no.3
• /
• pp.250-258
• /
• 2012

Recent rapidly growth in nanotechnolgies is promised novel benefits through the exploitation of their unique industrial and biomedical applications. In addition, the production amount of these nanomaterials and nanoproducts has increased, and thus their uncontrolled release into the environment is anticipated to grow dramatically in future. Therefore, nanowaste streams must be effectively managed for sustainable nanotechnology. However, the effectiveness and capability of the current systems to handle nanowastes are yet to be established. In this review, we investigated several key topics for new paradigm of nanowaste treatment, (i) global and domestic production of nanomaterials and nanoproducts, (ii) definition and key resources of nanowaste, (iii) current and developing treatment method for nanowaste, and (iv) regulations for nanomaterials and nanoproducts.

• Clean Technology
• /
• v.20 no.2
• /
• pp.160-165
• /
• 2014

Over the past decade, an increasing number of manufactured nanoparticles (NPs) have been incorporated into products and manufacturing processes due to the rapid innovation and commercialization in the field of nanotechnology. In addition, these nanomaterials and nano-consumer products have increased in quantity per year, and thus their uncontrolled release into the environment is anticipated to grow dramatically in future. However, A current sewage/wastewater treatment plant (SWTP) is being applied to removal of nanoparticles in wastewater. In Korea, the study on the removal of nanoparticles in SWTP was not reported yet. Therefore, in this work, to design pilot STP before field test, two model equations and commercial process simulation were used to derive the desing parameters.

• Clean Technology
• /
• v.13 no.3
• /
• pp.161-172
• /
• 2007

Fusion technology based on the nanotechnology should be introduced to clean technology for the breakthrough advances. Today, nanoparticles, nanotubes and other engineered nanomaterials are already in use in hundreds of everyday consumer products, and these materials are able to move around the human and environmental mediamore readily than larger particles of pollution. Because of their extremely small size and large surface area, nanoparticles are known to be more reactive and toxic than larger particles. Consequently, this feature raised many concerns of significant health, safety and environment. Herein, we reviewed risk assessment for health and environmental hazards of nanomaterials, and then revealed the potential hazardous of nanomaterials.

• Korean Chemical Engineering Research
• /
• v.50 no.6
• /
• pp.1056-1063
• /
• 2012

Recent rapidly growth in nanotechnolgies is promised novel benefits through the exploitation of their unique industrial and biomedical applications. With increasing utilization of nanomaterials in consumer products, the potential release of nanomaterials into the environment and their impacts on the ecosystem and human health have been the issues of concern. Nanomaterials that was exposed unintentionally in environment might be accumulated in various environmental media, and finally it will be influenced to human and ecosystems. Therefore, it is important to understand the fate and behavior of nanoparticles for understanding effects on environmental media (air, water, and soil phase). Therefore, in this work, we investigated the several cases for environmental exposure of nanomaterials and suggested the direction of further research. In workplace, exposure to air media is dominant, but finally waste and wastewater was moved to the water and soil phase. In addition, we found the existing sewage treatment plant was not suitable to remove completely nanomaterials in wastewater flow. To deeper study, environmental monitoring tool must be developed additionally and we suggested the several analyzing method for aged and pristine physicochemical properties of nanomaterials exposed into environmental media. This review for nanomaterials' exposure to environmental media will be helpful to investigate the environmental fate of nanomaterials and define the suitable treatment method for nano-waste.

• Korean Chemical Engineering Research
• /
• v.50 no.1
• /
• pp.112-117
• /
• 2012

With the development of nanotechnology, nano-consumer products have been popularized. For the past 10 years, potential risk of nanomaterials to human and environment have been raised carefully. Especially, workers, who directly handle nanomaterials in laboratories and manfacturers, will lead to direct exposure of nanomaterials. Therefore, direct exposure assessment and field monitoring of nanomaterials are required to assess and manage the nanomaterial exposure to human and environment. In this work, two nano-manufacturing companies, which had plasma and sol-gel processes, were selected to analyze the main exposure source and process with in-situ SMPS (scanning mobility particle sizer) and ex-situ TEM (transmission electron microscopy). The results showed that the colloidal nanoparticle in liquid phase was easily evaporated and monitored by SMPS. Most serious thing is that the workers does not know about the potential risk of nanomaterials, and thus they are not taking proper protection activities, such as PPE (personal protective equipment). Therefore, exposure assessment for nanomaterial handling facilities should be additionally carried out, and nano-safety management protocols are also provided.