On the national stage, another proud achievement was achieved by students of the Industrial Chemical Engineering Technology Study Program (TRKI) of the Diponegoro University Vocational School (SV Undip). They won 3rd place in the National Scientific Writing Competition for students held by the Faculty of Mathematics and Science, Yogyakarta State University (UNY).
This team carries an innovation entitled Algae Plast: Innovation of an Integrated System of Microalgae Bioreactors and Pyrolysis Technology for transforming Plastic Waste and CO2 into Sustainable Energy Products. The team consists of three talented students essential in developing the AlgaePlast innovation. Led by Eryka Destiawanti as team leader and supported by Nur Ilma Awliya and Shervaya Latiffa as members, they have successfully created an innovative solution for managing plastic waste and carbon emissions.
Under the guidance of Lecturer Teguh Riyanto, S.T., M.T., this team was able to design and develop a system that optimally integrates Direct Air Capture (DAC), microalgae bioreactors, and pyrolysis technology. Support and direction from their supervisors were key factors in perfecting this concept so that they could compete nationally and achieve proud achievements.
In this prestigious competition, the team developed a system that combines Direct Air Capture (DAC), microalgae bioreactors, and pyrolysis reactors to create a revolutionary solution to the problems of plastic waste and carbon dioxide (CO2) emissions. This technology allows plastic waste and CO2 in the atmosphere to be converted into pyrolysis oil, microalgae biomass, and char (carbon) that can be used as renewable energy.
The AlgaePlast mechanism begins with Direct Air Capture (DAC) technology that captures atmospheric carbon dioxide (CO2). The absorbed CO2 is then utilized by Spirulina sp microalgae in a bioreactor for photosynthesis, producing oxygen that can increase combustion efficiency in the pyrolysis reactor. The pyrolysis reactor decomposes polypropylene (PP) plastic waste into pyrolysis oil, hydrogen gas (H), and short-chain hydrocarbons.
“H2 gas and hydrocarbons are flowed to the pyrolysis combustion unit to increase combustion efficiency, while pyrolysis oil is utilized as an alternative fuel. In addition, microalgae biomass can be processed into health supplements and skin care products. “The AlgaePlast concept not only focuses on reducing carbon emissions but also provides concrete solutions for managing plastic waste by producing products with high economic value,” said one of the team members.
One of the main attractions of the team’s presentation is the engaging, interactive, and humorous yet profound way of delivering the presentation. This strategy successfully captivated the attention of the jury and the audience, making AlgaePlast an innovation that is not only visionary but also easy for various groups to understand.
With this success, the team hopes that the AlgaePlast innovation can be further developed and attract the attention of various parties, including industry and government, to support the implementation of sustainable, environmentally friendly technology.
Meanwhile, the Head of the TRKI Study Program at Undip Vocational School, Endy Julianto, said that this success proves that young Indonesians have great potential to present innovations that will change the environment and the future of energy.
“Hopefully, this achievement can inspire other young generations to continue to work and contribute to the country,” he explained.
Source: https://jatengdaily.com/2025/mahasiswa-trki-sekolah-vokasi-undip-raih-juara-nasional-berkat-algae-plast-inovasi-transformasi-limbah-plastik-dan-co2/?amp=1