Non-biodegradable

Whereas polyetheylene, polypropylene, and polystyrene are virtually non-biodegradable, only specially modified, not widely employed, polyamides and polyurethanes are susceptible to biodegradation [2]. Consequently, the use... 

The concentration of non-biodegradable compounds (measured as COD-Mn) was rather high, especially in the second half of the cooling season. These were supposed to origin from the wood chips (Ericsson, 2003). The content of phosphorus and some heavy metals in the snow were high, but in the outlet water most substances were considerably reduced. This was related to particle adsorption, as particles settled in the snow basin, which... 

Non-biodegradable hazardous materials 3 Strongly acid or alkaline materials in quantities... 

The most well known application of PHB and poly(3HB-co-3HV) is as substitute for conventional, non-biodegradable plastics used for packaging purposes and derived products [21, 115, 116]. Single-use bottles for shampoos, cosmetics and biodegradable motor-oil have been manufactured from these biopolyesters by common molding techniques. Containers and cups for food products were developed similarly, and bags have been produced from blown films of the material. 

A product is only considered to be totally biodegradable if all its single components can be degraded naturally. Currently, pressure sensitive adhesives (PSA) are mostly based on non-biodegradable synthetic polymers such as polyacrylates, ethylene-vinyl acetate copolymers and styrene block copolymers [124]. Therefore there is a growing demand for the application of biodegradable PSAs on naturally degradable products like paper and cardboard. 

Ghoreishi SM, Haghighi R (2003) Chemical catalytic reaction and biological oxidation for treatment of non-biodegradable textile effluent. Chem Eng J 95 163-169... 

Fluorescence data could be used to quantify oxygen demand values (chemical and biochemical) and total organic carbon values. Furthermore, the fluorescence spectral response can be apportioned to biodegradable (BOD) and non-biodegradable (COD-BOD) dissolved organics [71]. Other studies outline the advantages and drawbacks of the use of fluorescence techniques for waste-water quality monitoring [72,73]. 

Hori, K., Matsuzaki, Y., Tanji, Y. and Unno, H. (2002). Effect of dispersing oil phase on the biodegradability of a solid alkane dissolved in non-biodegradable oil, Appl. Microbiol. Biotechnol., 59, 574-579. 

As a first approach it is assumed that an industrial closed water loop focuses on the production of one type of process water of a constant water quality and temperature. After this process water has been polluted and has become a wastewater, it will be treated to the required quality and will be used again as process water. In fact this is the simplest form of a closed loop water system. We will discuss this situation first. The first step in the design of such a simple closed loop water system is to consider the type of separate treatment steps and the sequence of these treatment steps which have to be applied on a wastewater stream that contains large amounts of easily biodegradable soluble pollutants in addition to non-biodegradable soluble organic and inorganic pollutants and suspended and colloidal particulate... 

Mass chromatography of mlz 146 and 148 and mlz 180 and 182 is shown to be highly selective for di- and trichlorobenzenes. These components are only present in relatively minor amounts. A mass chromatogram at mlz 88 showed the presence of the rather volatile compound dioxane. This sediment sample obviously is heavily polluted with non-biodegraded mineral oil fractions and a number of other components (i.e. stearic acid, chlorinated benzenes), which point to spills of numerous bulk chemicals. 

Ecotoxicology The good inertness of the perflourinated systems against most reaction conditions will lead to a critical accumulation of non-biodegradable substances in the environment [72]. This waste deposition may lead to ecological problems in the future. 

What are biodegradable and non-biodegradable detergents Give one example of each. 

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