Publications by authors named "C Chiemchaisri"
In this study, geopolymer catalysts were synthesized by incorporating different TiO (0, 7, and 14 wt%) and FeO content (0, 7, 14, and 20 wt%) into porous metakaolin-based geopolymer granules. TiO- and FeO-immobilized geopolymer granules were applied for photocatalytic removals of imidacloprid under UV-C irradiation. The analysis of the surface morphology of the FeO catalyst revealed its larger surface area predominated with meso- and macro-pores thus providing a larger area for photocatalysis.
View Article and Find Full Text PDFAnaerobic pig wastewater treatment commonly generates high sulfide concentrations in the treated wastewater. This study aims to apply phototrophic green sulfur bacteria (PGB) to promote sulfide removal in lighting-anaerobic digestion (lighting-AD) treating pig wastewater. Initially, batch AD tests of pig wastewater with/without PGB addition were carried out under dark (D) and light (L) conditions.
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- This paper introduces a new bio-drying process for creating wet-refuse-derived fuel (Wet-RDF) that varies based on the type of organic material and its moisture level.
- Two experiments were conducted, focusing on different combinations of organic substrate percentages and moisture content, with Experiment A showing lower heating value compared to Experiment B.
- Results indicated that an aeration rate of 0.4 m/kg/day is optimal, leading to a significant reduction in moisture and an increase in heating value, making the improved wet-RDF suitable for the local cement industry.
This experimental research proposes an environment-friendly and low-cost porous geopolymer composite membrane (PGCM) to treat antibiotics in hospital wastewater. The proposed PGCM consisted of two layers: a porous support layer and a dense coating layer. The dense coating layer was synthesized by incorporating variable TiO content (0, 2, 6, and 10 wt%) into the geopolymer matrix.
View Article and Find Full Text PDFA pilot-scale of membrane bioreactor (MBR) had functioned without sludge withdrawal for six months, proposed to minimize antibiotic-resistant bacteria (ARB) dissemination from hospital wastewater. With this proposal, an aging sludge in MBR has concerned as preserved-severe multidrug-resistant microorganisms. Thus, this study aims to investigate resistance alteration of ARB in the aging-sludge compared to that in the wastewater.
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