The Influence of Ocean Acidification on The Surface Alteration of Microplastics

  • Tan Evonne
  • Aileen Tan Shau Hwai
  • Norlaila Mohd Zanuri

Abstract

Ocean acidification is the decreasing pH of seawater due to the absorption of excessive atmospheric carbon dioxide (CO2) by the ocean. Plastic pollution is an emerging environmental issue, caused by careless disposal and intense use of plastic products that eventually ended up in the ocean. Microplastics can be intentionally manufactured or exist from the breakdown of larger plastic pieces due to weathering in the form of sunlight and mechanical actions from wave and wind, also known as secondary microplastics. This work aims to understand the influence of ocean acidification (OA) towards surface alteration of microplastics surface changes in the ocean. In this work, virgin microplastics (< 5mm) are exposed in two different filtered seawater conditions for 10 days: normal (pH 8.0±0.2) and acidified condition (pH 7.7±0.2). The microplastic surface was analysed by using the Field Emission Scanning Electron Microscope (FESEM) and our findings revealed that all exposed microplastics experiences permanent aging and surficial damage. The aging of the microplastic surface was prominent in acidified conditions compared to normal condition. It is suggested that microplastics submerged in marine waters potentially release chemicals and in turn increase its toxicity. This condition can be further accelerated with increasing acidity of seawater. More study is needed to be carry out to further understand the mechanism of chemical release from plastic into the ocean during normal and acidified conditions.

References

Akdogen, Z. and Guven, B. (2019). Microplastics in the environment: A critical review of the current understanding and identification of future research needs. Environmental Pollution, 254 (A):113011, 1-24. https://10.1016/j.envpol.2019.113011
Avio, C.G., Gorbi, S. & Regoli, F. (2015). Experimental Development of a New Protocol for Extraction and Characterization of Microplastics in Fish Tissues: First Observations in Commercial Species from Adriatic Sea. Marine Environmental Research, 111: 18-26.
Bellasi, A., Binda, G., Pozzi, A., Galafassi, S., Volta, P. and Bettinetti, R (2020). Microplastic Contamination in Freshwater Environments: A Review, Focusing on Interactions with Sediments and Benthic Organisms. Environments, 7(4):30, 1-28. https://doi.org/10.3390/environments7040030
Cecilia, J.A., Plata, D. B. & García, E. V. (2021). CO2 Valorization and Its Subsequent Valorization. Molecules, 26 (2):500.
Chamas, A., Moon, H., Zheng, J., Qiu, Y., Tabassum, T., Jang, J. H., Abu-Omar, M., Scott, S. L. and Suh, S. (2020). Degradation Rates of Plastics in the Environment. ACS Sustainable Chemistry & Engineering, 8, 3494-3511. https://dx.doi.org/10.1021/acssuschemeng.9b06635
Chen, Q., Allegier, A., Yin, D. & Hollert, H. (2019). Leaching of endocrine disrupting chemicals from marine microplastics and mesoplastics under common life stress conditons. Environment International, 130, 1049838, 1-9. https://doi.org/10.1016/j.envint.2019.104938
Choy, Y. K. (2019). The Ocean Carbon Sink and Climate Change. Internaional Hournal of Environmental Science and Development, 10(8), 246-251. https://doi.org/10.18178/ijesd.2019.10.8.1181
Doney, S. C., Busch, D. S., Cooley, S. R. & Kroeker, K, J. (2020). The Impacts of Ocean Acidification on Marine Ecosystem and Reliant Human Communities. Annual Review of Environment and Resources, 45, 83-112. https://doi.org/10.1146/annurev-environ-012320-083019
Falkenberg, L. J., Bellerby, R. G. J., Connell, S. D., Fleming, L. E., Maycock, B., Russell, B. D., Sullivan, F. J. & Dupont, S. (2020). Ocean Acidification and Human Health, International Journal of Environmental Research and Public Health, 17(12):4563, 1-20. https://doi.org/10.3390/ijerph17124563
Galloway, T. S. and Lewis, C. N. (2016). Marine microplastics spell big problems for future generations. Proceedings of the National Academy of Sciences of the United States of America (PNAS), 113 (9), 2331-2333. https://doi.org/10.1073/pnas.1600715113
Gewert, B., Plassmann, M. M. & MacLeod, M. (2015). Pathways for degradation of plastic polymers floating in the marine environment. Environmental Science Processes & Impacts, 17(9), 1513-1521. https://doi.org/10.1039/C5EM00207A
Henry, J., Patterson, J. & Krimsky, L. (2020). Ocean Acidification: Calcifying Marine Organisms (FA220). University of Florida The Institute of Food and Agricultural Sciences (IFAS) Extension. https://edis.ifas.ufl.edu/fa220
Herr, D., Isensee, K., Harrould-Kolieb, E. and Turley, C. M (2014). Ocean Acidification: International Policy and Governance Options. International Union for Conservation of Nature (IUCN). https://www.iucn.org/sites/dev/files/import/downloads/ocean_acidification_international_policy_and_governence_iucn_2014.pdf
Ibrahim, N. R. & Noordin, N. N. M. (2020). Understanding the Issue of Plastic Waste Pollution in Malaysia: A case for Human Security. Journal of Media and Information Warfare, 13(1), 105-140.
Jansen, J. (2015). Plastic Failure Through Molecular Degradation: Multiple mechanisms can attack polymer chain-here’s what can go wrong. Plastics Engineering, 71, 34-39. 10.1002/J.1941-9635.2015.TB01285.X
Jury, C. P., Thomas, F. I. M., Atkinson, M. J. & Toonen, R. J. (2013). Buffer Capacity, Ecosystem Feedbacks and Seawater Chemistry under Global Change. Water, 5(3), 1303-1325. https://doi.org/10.3390/w5031303
Khalil, N., Husin, H. N., Mahat, N. & Nasir, N. (2011). Sustainable Environment: Issues and Solutions from the Perspective of Facility Managers. Procedia Engineering, 20, 458-465. https://doi.org/10.1016/j.proeng.2011.11.188
Kibria, G. (2017). Plastic Waste, Plastic Pollution – A Threat to All Nations, Project: Pollution and Climate Change Impacts. https://doi.org/10.13140/RG.2.2.11169.51048
Koelmans, A. A., Besseling, E. and Foekema, E. M. (2014). Leaching of plastic additives to marine organisms. Environmental Pollution, 187, 49-54. https://doi.org/10.1016/j.envpol.2013.12.013
Kumar, S., Rajesh, M., Rajesh, K. M., Suyani, N. K., Ahmed Rasheeq, A. and Pratiksha, K. S. (2020). Impact of Microplastics on Aquatic Organisms and Human Health: A Review. International Journal of Environmental Sciences & Natural Resources, 26(2), 59-64. https://doi.org/ 10.19080/IJESNR.2020.26.556185
Laffoley, D., Baxter, J.M., Turley, C. and Lagos, N.A., (editors). 2017. An introduction to ocean acidification: What it is, what we know, and what may happen. International Union for Conservation of Nature (IUCN), Gland, Switzerland. https://portals.iucn.org/library/sites/library/files/documents/Rep-2017-012-En.pdf
Lebreton, L., Slat, B., Ferrari, F., Sainte-Rose, B., Aitken, J., Marthouse, R., Hajbane, S., Cunsolo, S., Schwarz, A., Levivier, A., Noble, K., Debeljak, P., Maral, H., Schoeneich-Argent, R., Brambini, R., Reisser, J. (2018). Evidence that the Great Pacific Garbage Patch is rapidly accumulating plastic. Scientific Reports 8, 4666, 1-15. https://doi.org/10.1038/s41598-018-22939-w
Lindsey, R. (2020, August 14). Climate Change: Atmospheric Carbon Dioxide. Retrieved from https://www.climate.gov/news-features/understanding-climate/climate-change-atmospheric-carbon-dioxide#:~:text=Before%20the%20Industrial%20Revolution%20started,the%20Industrial%20Revolution%20in%201750
Met Office (2021). Mauna Loa carbon dioxide forecast for 2021. Retrieved from https://www.metoffice.gov.uk/research/climate/seasonal-to-decadal/long-range/forecasts/co2-forecast-for-2021
Miranda, M. N., Sampaio, M. J., Tavares, P. B., Silva, A. M. T. & Pereira, M. F., R. (2021). Aging assessment of microplastics (LDPE, PET and uPVC) under urban environment stressors. Science of the Total Environment, 796, 1-9. https://doi.org/10.1016/j.scitotenv.2021.148914
Piccardo, M., Provenza, F., Grazioli, E., Cavallo, A., Terlizzi, A. & Renzi, M. (2020). PET microplastics toxicity on marine key species is influenced by PH, particle size and food variations. Science of the Total Environment, 715:136947, 1-12. https://doi.org/10.1016/j.scitotenv.2020.136947
Publications Office of the European Union (2020). Plastic materials and articles in contact with food. Retrieved from https://eur-lex.europa.eu/legal-content/EN/LSU/?uri=CELEX:32011R0010
Rochman, C. M., Hentschel, B. T. & Teh, S. J. (2014). Long-Term Sorption of Metals Is Similar among Plastic Types: Implications for Plastic Debris in Aquatic Environments. PLoS ONE, 9(1), 1-10. https://doi.org/10.1371/journal.pone.0085433
Susskind, L., Chun, J., Goldberg, S., Gordon J. A., Smith, G. & Zaerpoor, Y. (2020). Breaking Out of Carbon Lock-In: Malaysia’s Path to Decarbonization. Frontiers in Built Environment, 6(21). https://doi.org/10.3389/fbuil.2020.00021
Upton, H. F. & Folger, P. (2013). Ocean Acidification (R40143). Congressional Research Service. https://fas.org/sgp/crs/misc/R40143.pdf
Venkatachalam, S., Nayak, S. G., Labde, J. V., Gharal, P. R., Rao, K. & Kelkar, A. K. (2012). Degradation and recyclability of Poly(Ethylene Terephthalate). In Saleh, H. (Ed). Polyester (pp 75-98). IntechOpen. http://dx.doi.org/10.5772/48612
Verla, A. W., Enyoh, C. E., Verla, E. N. & Nwarnorh, K. O. (2019). Microplastic–toxic chemical interaction: a review study on quantified levels, mechanism and implication. SN Applied Science, 1(1400). https://doi.org/10.1007/s42452-019-1352-0
Webb, H. K., Arnott, J., Crawford, R. J. & Ivanova, E. P. (2013). Plastic Degradation and Its Environmental Implications with Special Reference to Poly(ethylene terephthalate). Polymers, 5(1), 1-18. https://doi.org/10.3390/polym5010001
Zhang, Y., Zhang, H., Zhang, Z., Liu, C., Sun, C., Zhang, W. & Marhaba, T. (2018). pH Effect on Heavy Metal Release from a Polluted Sediment. Journal of Chemistry, 2018, 1-7. https://doi.org/10.1155/2018/7597640
Published
2022-09-01
How to Cite
EVONNE, Tan; TAN SHAU HWAI, Aileen; MOHD ZANURI, Norlaila. The Influence of Ocean Acidification on The Surface Alteration of Microplastics. Asian Journal of Fundamental and Applied Sciences, [S.l.], v. 3, n. 3, p. 8-16, sep. 2022. Available at: <https://myjms.mohe.gov.my/index.php/ajfas/article/view/19461>. Date accessed: 06 feb. 2023.
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Articles