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All Journal Science Midwifery Journal of Emerging Science and Engineering
Khoironi, Adian
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Dentistry Engineering Environmental Science Health Professions Nursing Public Health Veterinary

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Optimisation of Chitosan as A Natural Flocculant for Microplastic Remediation Putranto, Petrus Apri; Khoironi, Adian; Baihaqi, Rifqi Ahmad
Journal of Emerging Science and Engineering Vol. 1 No. 2 (2023)
Publisher : BIORE Scientia Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/jese.2023.7

Abstract

The objective of this study is to determine the optimal concentration of chitosan for microplastic remediation using the coagulation-flocculation method. The chitosan concentrations employed in this study include 10, 20, 30, and 40 ppm. The process of coagulation was conducted for one minute, with a rotational speed of 120 rpm. The process of flocculation was performed for 30 minutes with a rotational speed of 60 rpm. The findings of the study indicate that chitosan demonstrates a high efficacy in microplastic removal, resulting in a removal rate of 68.3%. Furthermore, the research findings indicate that the optimal concentration of chitosan for microplastic remediation was determined to be 30 ppm. The concentration of chitosan has a direct impact on the pH, TDS, COD, and BOD values. In general, an increase in chitosan concentration leads to a drop in pH and TDS values; conversely, an increase in chitosan concentration results in a rise in COD and BOD values.
The influence of nutritional literacy and adolescent eating habits: A literature review Fikroh, Yadya'ul; Nurjanah, Nurjanah; Rimawati, Eti; Yuantari, MG Catur; Khoironi, Adian
Science Midwifery Vol 13 No 1 (2025): April: Health Sciences and related fields
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/midwifery.v13i1.1869

Abstract

Adolescents are prone to nutrition problems due to low nutrition literacy and unhealthy eating patterns. In Indonesia, the prevalence of chronic energy deficiency (CED), central obesity, and anemia in adolescents is still high, potentially increasing infectious diseases in adulthood. The literature review method was used in this study through a systematic search through BioMed, Googe Scholar, Pubmed, Science Direct, and SAGE databases. Articles that met the inclusion criteria and were published between 2020-2024 and were relevant to nutrition literacy, eating habits, and nutritional status of adolescents were further analyzed. Analysis of the 7 selected articles showed that good nutrition literacy was positively associated with healthier food choices. However, good nutrition literacy is not sufficient without a supportive environment and behavioral skills. Nutritional literacy and adolescent diets are influenced by factors such as socioeconomic status, maternal education, and access to health services. A comprehensive approach through school education, family roles, and policies that contribute to improving nutrition literacy in adolescents is needed. Preventing obesity and non-communicable diseases in the future is important by strengthening nutrition literacy. Prioritizing applicable skills such as healthy cooking, and reading food labels in support of sustainable behavior change is recommended for future interventions.
SPIROWPLAST (Spirulina and arrowroot bioplastic): A combination of Spirulina and arrowroot to enhance the tensile strength and durability of bioplastic Ichlasia, Amira Liontina; Adelia, Zameera; Damayanti, Roosita; Astari, Putri Dyah; Pratama, Wahyu Disky; Khoironi, Adian
Journal of Emerging Science and Engineering Vol. 4 No. 1 (2026)
Publisher : BIORE Scientia Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/jese.2026.e62

Abstract

Plastic waste that is resistant to natural degradation remains a critical environmental challenge. One promising strategy to address this issue is the development of bioplastics derived from renewable, biodegradable resources. This study investigates the potential of combining Spirulina platensis and arrowroot (Maranta arundinacea) flour to produce bioplastics with improved mechanical, chemical, and biodegradation performance. An experimental approach was employed using four formulations: bioplastics derived solely from S. platensis, solely from arrowroot flour, a composite of S. platensis and arrowroot flour, and a commercial bioplastic (ecoplast) as a positive control. Comprehensive characterization was conducted using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), tensile strength, thickness measurement, and biodegradation tests in accordance with ASTM standards. The results demonstrate that the combined Spirulina–arrowroot formulation exhibits more balanced and superior properties compared to single-component bioplastics. The composite bioplastic achieved a tensile strength of 4.267 MPa and an elongation at break of 105.5%, approaching the performance of commercial bioplastic. FTIR analysis confirmed the presence of key functional groups, including hydroxyl (–OH), carboxyl (–COOH), ester (C–O), and aromatic structures, indicating effective polymer network formation. SEM observations revealed a smoother and denser surface morphology, while XRD analysis indicated a semi-crystalline structure with a crystallinity of 49.6%. All bioplastic samples fully decomposed in composted soil within three days, highlighting their excellent biodegradability. Overall, the combination of Spirulina platensis and arrowroot flour effectively compensates for the limitations of each individual material, yielding a strong, flexible, and rapidly degradable bioplastic. These findings suggest a viable and environmentally friendly alternative to conventional plastics and provide a foundation for the future development of large-scale bioplastic products with properties comparable to commercial materials.
Extracellular polymeric substances from Spirulina sp. for the bioremediation of fishing net–derived microplastics in seawater Wahyuningtyas, Sri Hapsari; Khoironi, Adian; Bucol, Lilibeth
Journal of Emerging Science and Engineering Vol. 4 No. 1 (2026)
Publisher : BIORE Scientia Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/jese.2026.e64

Abstract

The increasing accumulation of plastic waste from fishing nets is primarily driven by the large volume of nets introduced into aquatic systems. Fishing nets are predominantly manufactured from polyethylene, a polymer known for its high resistance to degradation, allowing it to persist in marine environments for hundreds of years. Consequently, discarded or degraded fishing nets represent an ongoing environmental challenge, which is further exacerbated by their fragmentation into microplastics. In response to this issue, this study aims to evaluate the effectiveness of extracellular polymeric substances (EPS) produced by Spirulina sp. for the bioremediation of polyethylene-derived microplastics from fishing nets in seawater. A quasi-experimental design was employed, consisting of control and treatment reactors. EPS was applied at concentrations of 20, 30, and 40 mg in the treatment reactors, while the control reactor received no EPS addition. The remediation process was conducted over treatment periods of 5, 9, and 13 days. Following the treatment, laboratory analyses were performed to assess changes in key water quality parameters, including salinity, dissolved oxygen (DO), pH, total dissolved solids (TDS), chemical oxygen demand (COD), and Spirulina growth rate. In addition, the residual microplastics that were not flocculated were quantified. The results indicated that the presence of microplastics influenced the growth dynamics of Spirulina. Nevertheless, EPS application resulted in a measurable reduction in microplastic mass, with decreases of 5.0 g, 10.1 mg, and 11.6 mg observed in the 20, 30, and 40 mg treatments, respectively. Overall, the findings demonstrate that bioremediation using Spirulina-derived EPS is effective in reducing polyethylene microplastics in seawater. Future studies are recommended to extend the treatment duration, utilize natural seawater under environmentally realistic conditions, and evaluate the broader ecological impacts of EPS-based bioremediation to support its practical application in marine environments.
Co-Authors Adelia, Zameera Astari, Putri Dyah Baihaqi, Rifqi Ahmad Bucol, Lilibeth Damayanti, Roosita Eti Rimawati Fikroh, Yadya'ul Ichlasia, Amira Liontina MG Catur Yuantari N. Nurjanah Pratama, Wahyu Disky Putranto, Petrus Apri Wahyuningtyas, Sri Hapsari