Hadiyanto Hadiyanto1,2, Amnan Haris1, Fuad Muhammad1,3, Norma Afiati4, Adian Khoironi5. 1. Departments of Environmental Science, School of Postgraduate Studies, Diponegoro University, Semarang 50275, Indonesia. 2. Center of Biomass and Renewable Energy (CBIORE), Chemical Engineering Department, Faculty of Engineering, Diponegoro University, Semarang 50271, Indonesia. 3. Biology Department, Faculty of Sciences and Mathematic, Diponegoro University, Semarang 50271, Indonesia. 4. Fisheries Science, Faculty of Fisheries and Marine Science, Diponegoro University, Semarang 50271, Indonesia. 5. Department of Environmental Health, Faculty of Public Health, Dian Nuswantoro University, Semarang 50131, Indonesia.
Abstract
Styrofoam is a thermoplastic with special characteristics; it is an efficient insulator, is extremely lightweight, absorbs trauma, is bacteria resistant, and is an ideal packaging material, compared to other thermoplastics. The aim of this study was to analyze the interaction between Styrofoam and S. platensis. The study examined the growth of S. platensis under Styrofoam stress, changes in Styrofoam functional groups, and their interactions. The research method was culture carried out in brackish water (12 mg/L salinity) for 30 days. S. platensis yields were tested by FTIR and SEM-EDX and Styrofoam samples by FTIR. The results showed the highest growth rate of S. platensis in cultures treated with 150 mg Styrofoam that is 0.0401 day-1. FTIR analysis shows that there has been a change in the functional group on Styrofoam. At a wavelength of 3400-3200 cm-1 corresponds to the alcohol group and there was an open cyclic chain shown by the appearance of a wavelength at 1680-1600 cm-1 assignment to alkene. SEM-EDX test results show that Styrofoam can be a resource of nutrition, especially carbon for S. platensis to photosynthesize. Increased carbon content of 24.56% occurred in culture, meanwhile, Styrofoam is able to damage S. platensis cells.
class="Chemical">Styrofoam is a thermoclass="Chemical">plastic with sclass="Chemical">peciclass="Chemical">pan class="Chemical">al characteristics; it is an efficient insulator, is extremely lightweight, absorbs trauma, is bacteria resistant, and is an ideal packaging material, compared to other thermoplastics. The aim of this study was to analyze the interaction between Styrofoam and S. platensis. The study examined the growth of S. platensis under Styrofoam stress, changes in Styrofoam functional groups, and their interactions. The research method was culture carried out in brackish water (12 mg/L salinity) for 30 days. S. platensis yields were tested by FTIR and SEM-EDX and Styrofoam samples by FTIR. The results showed the highest growth rate of S. platensis in cultures treated with 150 mgStyrofoam that is 0.0401 day-1. FTIR analysis shows that there has been a change in the functional group on Styrofoam. At a wavelength of 3400-3200 cm-1 corresponds to the alcohol group and there was an open cyclic chain shown by the appearance of a wavelength at 1680-1600 cm-1 assignment to alkene. SEM-EDX test results show that Styrofoam can be a resource of nutrition, especially carbon for S. platensis to photosynthesize. Increased carboncontent of 24.56% occurred in culture, meanwhile, Styrofoam is able to damage S. platensis cells.
Authors: Richard C Thompson; Ylva Olsen; Richard P Mitchell; Anthony Davis; Steven J Rowland; Anthony W G John; Daniel McGonigle; Andrea E Russell Journal: Science Date: 2004-05-07 Impact factor: 47.728