Search results
Results from the WOW.Com Content Network
Polyhexamethylene guanidine (PHMG) is a guanidine derivative that is used as a biocidal disinfectant, often in the form of its salt polyhexamethylene guanidine phosphate (PHMG-P). Studies have shown that PHMG in solution has fungicidal as well as bactericidal activity against both Gram-positive and Gram-negative bacteria . [ 2 ]
The main cause of the lung diseases was the chemicals PHMG, methylchloroisothiazolinone (CMIT), methylisothiazolinone (MIT) and oligo(2-(2-ethoxy)-ethoxyethyl)guanidinium-chloride (PGH). [3] Experiments by the South Korean government found pulmonary toxicity of PHMG and PGH when inhaled as a vapor.
Chemical engineers design, construct, and operate process plants, such as these fractionating columns. Chemical engineering is an engineering field which deals with the study of the operation and design of chemical plants as well as methods of improving production. Chemical engineers develop economical commercial processes to convert raw ...
A report on Sina.com in May 2016 said that PHMG was known to have caused 70 deaths and to harmed the lungs of 177 people, with the actual total of deaths and people injured unknown. [ 64 ] Reckitt Benckiser Korea has been blamed for 103 deaths by a coalition of consumer groups in South Korea; [ 67 ] a report from The Korea Herald in April 2016 ...
Chemical engineers use computers to manage automated systems in production plants. Historically, the chemical engineer has been primarily concerned with process engineering, which can generally be divided into two complementary areas: chemical reaction engineering and separation processes.
All of the editions of Perry's Chemical Engineering Handbooks. The 2018–2019 ninth edition was edited by Don W. Green and Marylee W. Southard [4] [5] Don Green, the handbook's editor-in-chief, holds a B.S. in petroleum engineering from the University of Tulsa, and M.S. and PhD. Degrees in chemical engineering from the University of Oklahoma.
Polyhexanide (polyhexamethylene biguanide, PHMB) is a polymer used as a disinfectant and antiseptic.In dermatological use, [4] it is spelled polihexanide and sold under various brand names. [5]
Bioreactor. Biochemical engineering, also known as bioprocess engineering, is a field of study with roots stemming from chemical engineering and biological engineering.It mainly deals with the design, construction, and advancement of unit processes that involve biological organisms (such as fermentation) or organic molecules (often enzymes) and has various applications in areas of interest ...