Regulations biodegradation

The ideal plant growth regulator should leave no harmful persistent residue in a finished product or crop and the paradigm compounds are ones that have high specific activity, are target specific, and are environmentally biodegradable. 

Most uses of chloroisocyanurates are regulated by the EPA under EIERA. Cyanuric acid (or cyanurate) is ultimately the end product of use of chloroisocyanurates in bleaching, sanitizing, and disinfection appHcations. Since the N-chloro derivatives are biocidal, biodegradation studies have centered on the residual CA. Biodegradation occurs (128). 

Table 8. Biodegradable RCRA-Regulated Organic Compounds, (USEPA, 198S) ...

Butyl- and phenyltin compounds, particularly the trialkylated forms are very toxic to marine life. The antifouling paints, mainly tributyltin (TBT) but also triphenyltin (TPhT) caused and continue to cause substantial damage because of their slow biodegradation and their accumulation in the biota, notwithstanding a substantial reduction in application through multi-national regulation). 

Gasoline is a mixture of different compounds. A typical blend contains nearly 200 different hydrocarbons and additives such as antioxidants and antiknock agents. Thirteen of the chemicals commonly found in gasoline (nine hydrocarbons and four additives) are regulated as hazardous substances under CERCLA. Table 18.1 lists the chemicals along with the values of toxicity, water solubility, vapor pressure, and biodegradability.19... 

Biodegradable Nanoparticles as Vaccine Adjuvants and Delivery Systems Regulation of Immune Responses by Nanoparticle-Based Vaccine... 

Though treatment of azo dye-containing wastewaters needs combined anaerobic-aerobic phases, microorganisms are subjected to continually alternating anaerobic and aerobic conditions. Thus, it is presumable that anaerobic enzymes involved in the azo dye reduction may be adversely affected by aerobic conditions, as well as aerobic enzymes involved in the aromatic amine mineralization may be adversely affected by anaerobic conditions. Since little is known about the regulations of the enzymes involved in complete biodegradation of colored wastewaters, this approach seems to need advanced investigation to improve color removal and aromatic amine mineralization. 

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