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All Journal Organisms: Journal of Biosciences Indonesian Journal of Environment and Sustainability Issues
Aulia Ulmillah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary

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Seaweed-Based Organic Fertilizer: Sargassum polycistum and Ulva lactuca as Green Innovations Supporting Environmental Policies Aulia Ulmillah; Rozalina; Panggabean, Siti Munawarah
Indonesian Journal of Environment and Sustainability Issues Vol. 1 No. 2 (2024): December 2024 | Indonesian Journal of Environment and Sustainability Issues
Publisher : WISE Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70211/ijesi.v1i2.132

Abstract

The West Coast is a coastal area rich in marine resources, including seaweed. The utilization of seaweed by the local community remains limited, primarily sold at low prices. The predominant seaweed species found in the West Coast area are Sargassum polycistum and Ulva lactuca. These two types of seaweed can be utilized as nutrient-rich, environmentally friendly organic fertilizers that benefit plants. This study aims to evaluate the quality of fertilizers derived from Sargassum polycistum and Ulva lactuca through the composting method. The data collected include physical and chemical observations. Physical quality observations cover aroma, color, texture, pH, and temperature, conducted from the seventh day until the compost is mature. Chemical quality tests of the organic fertilizer include measurements of total nitrogen (N), total phosphorus (P), total potassium (K), and organic carbon (C). The results were then compared with the compost quality standards outlined in SNI 19-7030-2004. The findings indicate that the best physical and chemical quality organic fertilizers meeting SNI standards were produced from the compositions of 5 kg Ulva lactuca + 700 mL EM4 and 5 kg Sargassum polycistum + 700 mL EM4.
Analysis of Microplastic Abundance on the Coast of South Lampung as a First Step in Pollution Control Marlina Kamelia; Aulia Ulmillah; Pawhestri, Suci Wulan
ORGANISMS: JOURNAL OF BIOSCIENCES Vol. 5 No. 2 (2025): Organisms: Journal of Biosciences
Publisher : Pusat HKI, Paten, dan Publikasi Ilmiah Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/vegft214

Abstract

Microplastics pose serious threats as they can  contaminate various ecosystems, ranging from seawater surfaces, beach sands, freshwater sediments, coastal sediments, to deep-sea environments. Their presence, particularly in coastal areas, exerts significant negative impacts on ecosystem balance and human health. This study aimed to analyze the types and abundance of microplastics in seawater and sediments of South Lampung’s coastal area, measure related environmental parameters (BOD, COD, pH, temperature, and current velocity), and provide baseline data to support strategies for pollution control. The research was conducted using an experimental method at six stations located 50–100 meters apart. Water and sediment samples were collected, filtered, separated, and analyzed using Fourier Transform Infrared Spectroscopy (FTIR) to identify polymer types. The results revealed that microplastics were detected at all stations, with dominant polymers including polyethylene (PE), polypropylene (PP), polyester (PES), polystyrene (PS), and smaller amounts of polyamide. Physico-chemical parameters of the waters were generally within acceptable thresholds, although BOD levels at several stations slightly exceeded the quality standards, indicating a relatively high organic load. This study confirms that microplastic pollution has already occurred in the South Lampung coastal area, dominated by polymers originating mainly from anthropogenic activities such as household waste, synthetic textiles, and coastal activities. As such, this research provides an essential initial step in mapping microplastic pollution in the region.  
Co-Authors Marlina Kamelia Panggabean, Siti Munawarah Rozalina, Rozalina Rozalina Suci Wulan Pawhestri