Due to the limited reaction rate of oxygen reduction (ORR), it is considered as a limiting factor in performance fuel cells and metal-air batteries. Platinum benchmark catalyst for ORR; however, scarcity platinum, its high price, drift phenomenon, insufficient durability, susceptibility gas poisoning are reasons constant search new ORR catalysts. Carbon-based catalysts show exceptional promise ...

Abstract . Some biopolymer materials can be used as filler to increase the slow release capacity of active component. Technology modification biopesticide production processes its use sodium alginate, maltodextrin and CMC (Carboxy Methyl Celluose). The purpose this research activity was modify formulation several types concentrations biopolymers analyze characteristics in citronella oil-based b...

Alginate is an attractive marine resource-based biopolymer, which has been widely used in pharmaceutical, food and textile industries. This paper reviewed the latest development of conventional alternative processes for alginate extraction from brown seaweed. To improve yield product quality, various studies have carried out to optimize operation condition. Based on literature survey, most comm...

Protein–polysaccharide biopolymer particles composed of potential acrylamide inhibitors, including zein, chitosan, alginate, and pectin, were used for mitigation in this study. The synergistic effect zein polysaccharides complex was hypothesized to inhibit formation at high temperature. A reaction model utilizing a glucose asparagine solution heated 170 °C 30 min heating block implemented. Zein...

Film-forming solutions based on four types of biopolymers were prepared and their rheological properties determined. High methylated apple pectin sodium alginate used at the concentrations 1%, 1.5%, 2%, whereas soy protein isolate pork gelatin obtained 4%, 8%, 12%. The parameters determining production appropriate type packaging film or edible coating are setting time substrate, regardless its ...

In this study, the adsorption behavior of an alginate biopolymer microspheres containing D2 EHPA/TOPO (DTMCs) toward samarium (III) and gadolinium (III) ions was examined under various conditions. Scanning electron microscope (SEM) and thermogravimetric analysis (TGA) techniques were used to characterize the structure of microspheres. The average size of the microspheres was estimated around 50...

A thorough assessment of gelation progress requires real-time recording biopolymer kinetics. In this study, an in situ investigation with a customized parallel-plate rheometric setup examines how the initial distribution CaCl2 to alginate through micro-holes affects process. At constant volume and concentration reactants, stiffer gels are produced at same probing time by increasing number suppl...

Removal of fluoride ions was investigated using a new adsorbent of yttrium alginate biocomposite (YALG). Effect of various parameters such as pH, contact time, initial concentration of fluoride ions and temperature on the sorption capacity of adsorbent was studied. Performing a mathematical assessment of fluoride sorption, isotherm and kinetics models including Freundlich & Langmuir isotherms a...