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Papers
10 resultsShowing papers from Polytechnic University of the Philippines
ClearA Systematic Review of Microplastic Detection in Water
This systematic review summarizes current methods for detecting microplastics in water sources. The research highlights significant challenges in accurately measuring these tiny plastic particles, with different techniques yielding very different results. Better detection methods are essential for understanding how much microplastic is present in the water people drink and use daily.
Emerging pollutants in waste water: Challenges and advancements in treatment technology
This review examines the challenges of removing emerging pollutants like microplastics, PFAS, and pharmaceutical residues from wastewater using conventional treatment methods. Researchers found that traditional approaches such as activated sludge and coagulation are often insufficient, while advanced oxidation processes, adsorption-based methods, and novel biological treatments show more promise. The study emphasizes the need for sustainable, energy-efficient solutions and stronger regulatory frameworks to protect water resources.
Plastic Coarse Aggregates with Low- and High-Density Polyethylene with Improved Shore Durometer Hardness as Partial Replacement to Natural Coarse Aggregates
Plastic coarse aggregates made from LDPE/HDPE blends with improved Shore Durometer hardness were developed and evaluated as partial replacements for natural coarse aggregates in construction, addressing both natural aggregate shortages and plastic waste accumulation. The study characterized mechanical and durability properties of concrete incorporating these recycled plastic aggregates at various substitution rates.
Free standing nanocellulose films – fabrication methods, surface engineering and recyclability
This review examines fabrication methods, surface engineering approaches, and recyclability of free-standing nanocellulose films, highlighting their potential as sustainable alternatives to synthetic plastic films across various applications.
Preliminary study on Microplastics in Bivalves Perna viridis, Crassostrea iredalei, and Venerupis philippinarum Harvested from Bacoor Bay, City of Bacoor, Cavite
Researchers investigated the presence, quantity, and size of microplastics ingested by three commercially important bivalve species -- Perna viridis, Crassostrea iredalei, and Venerupis philippinarum -- harvested from Bacoor Bay in the Philippines. The study found microplastic contamination across all three species, highlighting risks of human exposure through consumption of these commercially harvested shellfish.
Occurrence of microplastic fragments in the Pasig River
Microplastic fragments were found in water samples from the Pasig River in the Philippines, a heavily urbanized river flowing through Metro Manila. The findings are consistent with the Philippines' status as one of the world's largest sources of ocean plastic pollution.
Assessment of Microplastics in Fish GI Tracts and Shallow Water Sediments in Pugad Baboy Mangrove Area, Kawit, Cavite Using Fourier Transform Infrared-Attenuated Total Reflectance Spectroscopy
Researchers assessed, characterized, and quantified microplastic contamination in fish gastrointestinal tracts and shallow water sediments from the Pugad Baboy Mangrove area in Kawit, Cavite using FTIR-ATR spectroscopy to identify polymer types.
Identification and Characterization of Microplastics on the Surface Water in Laguna de Bay, Philippines
Researchers collected and characterized 890 microplastic particles from surface water at three sites in Laguna de Bay, the largest lake in the Philippines, using visual microscopy and FTIR analysis. Fibres dominated the samples, photodegradation was evident from colour changes, and polyethylene was the most common polymer type identified.
Assessment of Microplastics in the Surface Water of Sitio Pulo, Navotas, Metro Manila
Researchers sampled microplastics from coastal and lagoon surface waters at Sitio Pulo, a mangrove sanctuary in Navotas City, Metro Manila. Microplastic particles were isolated and characterized from both water types. The study highlights that even protected mangrove areas adjacent to densely populated urban coastlines are contaminated with microplastics.
Occurrence of Microplastic Fragments in Pasig River
Researchers investigated microplastic occurrence in the Pasig River in the Philippines, which is estimated to discharge tens of thousands of tonnes of plastic into the ocean annually. The study found microplastic particles present in river water samples, consistent with the river's role as a major global ocean plastic polluter.