Pollutant content in marine debris and characterization by thermal decomposition

MARINE POLLUTION BULLETIN

卷:117

Article

Iniguez, M. E.¹  Conesa, J. A.¹  Fullana, A.¹ 

[1] Univ Alicante, Chem Engn Dept, POB 99, Alicante 03080, Spain

关键词: Marine debris;    Pollutants;    Kinetic;    Combustion;    Decomposition;   

DOI  :  10.1016/j.marpolbul.2017.02.022

来源: Elsevier

【 摘 要 】

Marine debris (MDs) produces a wide variety of negative environmental, economic, safety, health and cultural impacts. Most marine litter has a very low decomposition rate (plastics), leading to a gradual accumulation in the coastal and marine environment. Characterization of the MDs has been done in terms of their pollutant content: PAHs, CIBzs, CIPhs, BrPhs, PCDD/Fs and PCBs. The results show that MDs is not a very contaminated waste. Also, thermal decomposition of MDs materials has been studied in a thermobalance at different atmospheres and heating rates. Below 400-500 K, the atmosphere does not affect the thermal degradation of the mentioned waste. However, at temperatures between 500 and 800 K the presence of oxygen accelerates the decomposition. Also, a kinetic model is proposed for the combustion of the MDs, and the decomposition is compared with that of their main constituents, i.e., polyethylene (PE), polystyrene (PS), polypropylene (PP), nylon and polyethylene-terephthalate (PET). (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

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