72
L. J. Rather et al.
[147–150]. Also no severe loss of the nitrification performance of microorganisms
in the activated sludge of wastewater treatment plants was observed. Disposal in
incinerators must be another good option for input path of nanomaterials from textiles. Walser et al. from their studies showed that the behavior of CeO 2 nanoparticles
in a waste incineration plant has found that nanoparticles do not discharge into the
atmosphere if the incineration plant is precisely well-equipped but that they attach
themselves to residues and can then be found in recycled raw materials or landfills
[151].
6.2 Effects on Human Health
An overall conclusion on possible risks with respect to human health cannot derived
due to the diversity of nanomaterials-containing textiles with respect to manufacturing processes, the synthetic nanomaterials used, and their uses. Some of the nanomaterials used have the risks for toxic or eco-toxic effects but these nanomaterials
must be pertinently absorbed into the system to act in this way. The possible gateways of entry into the human body for particles potentially released from textiles
during wearing are skin and lung. Particles inhaled were transported out of the lung
via natural clearance mechanisms such as the “mucus elevator”, and thereafter were
swallowed, so a contact of the gastrointestinal tract cannot be excluded. On exposure with nanomaterials from textiles, vital biological endpoints can be defined as
inflammation, acute toxicity, oxidative stress, DNA damage, crossing and damage
to tissue barriers.
For human health the following criteria were defined: (1) acute toxicity, (2) chronic
toxicity, (3) impairment of DNA, (4) crossing and damaging of tissue barriers, (5)
brain damage and translocation and effects of ENM in the (6) skin, (7) gastrointestinal or (8) respiratory tract. These criteria comprise toxic effects of ENM, essential
biological endpoints and potential for uptake into the blood. The exposure of electromagnetic radiation on the human body may lead to changes in the nerve cells,
stimulating muscles and physical damage [21]. Because of vibration and heat generation by electromagnetic radiation in the human’s body, RNA and DNA in cells
may stop production, which will lead to abnormal chemical activity of cells and cell
cancer [152]. One of the key approaches used in protection from electromagnetic
radiation is shielding. Shielding can be defined as dipping the electromagnetic field
in a space by obstructing the field with barriers comprising of magnetic or conductive materials. In recent years, conductive polymers (conventional textile fibers) are
used to defend the body against electromagnet waves. The elasticity and lightweight
of conductive fabrics have engrossed the attention of many scientists to fabricate
protective textiles against electromagnetic waves [153]. Conductive fabrics are synthesized by special finishing methods using a small amount of conductive materials
like carbon. The following approaches can be used to achieve the conductive textiles:
L. J. Rather et al.
[147–150]. Also no severe loss of the nitrification performance of microorganisms
in the activated sludge of wastewater treatment plants was observed. Disposal in
incinerators must be another good option for input path of nanomaterials from textiles. Walser et al. from their studies showed that the behavior of CeO 2 nanoparticles
in a waste incineration plant has found that nanoparticles do not discharge into the
atmosphere if the incineration plant is precisely well-equipped but that they attach
themselves to residues and can then be found in recycled raw materials or landfills
[151].
6.2 Effects on Human Health
An overall conclusion on possible risks with respect to human health cannot derived
due to the diversity of nanomaterials-containing textiles with respect to manufacturing processes, the synthetic nanomaterials used, and their uses. Some of the nanomaterials used have the risks for toxic or eco-toxic effects but these nanomaterials
must be pertinently absorbed into the system to act in this way. The possible gateways of entry into the human body for particles potentially released from textiles
during wearing are skin and lung. Particles inhaled were transported out of the lung
via natural clearance mechanisms such as the “mucus elevator”, and thereafter were
swallowed, so a contact of the gastrointestinal tract cannot be excluded. On exposure with nanomaterials from textiles, vital biological endpoints can be defined as
inflammation, acute toxicity, oxidative stress, DNA damage, crossing and damage
to tissue barriers.
For human health the following criteria were defined: (1) acute toxicity, (2) chronic
toxicity, (3) impairment of DNA, (4) crossing and damaging of tissue barriers, (5)
brain damage and translocation and effects of ENM in the (6) skin, (7) gastrointestinal or (8) respiratory tract. These criteria comprise toxic effects of ENM, essential
biological endpoints and potential for uptake into the blood. The exposure of electromagnetic radiation on the human body may lead to changes in the nerve cells,
stimulating muscles and physical damage [21]. Because of vibration and heat generation by electromagnetic radiation in the human’s body, RNA and DNA in cells
may stop production, which will lead to abnormal chemical activity of cells and cell
cancer [152]. One of the key approaches used in protection from electromagnetic
radiation is shielding. Shielding can be defined as dipping the electromagnetic field
in a space by obstructing the field with barriers comprising of magnetic or conductive materials. In recent years, conductive polymers (conventional textile fibers) are
used to defend the body against electromagnet waves. The elasticity and lightweight
of conductive fabrics have engrossed the attention of many scientists to fabricate
protective textiles against electromagnetic waves [153]. Conductive fabrics are synthesized by special finishing methods using a small amount of conductive materials
like carbon. The following approaches can be used to achieve the conductive textiles: