Vanadium containing sludge is a by-product of vanadium pentoxide obtained by hydrometallurgical methods from slag that can be estimated as promising technogeneous raw material for production. The phase analysis vanadium-containing the X-ray diffraction method showed it contains in spinel form (FeO∙V2O3). various oxidation roasting treatment were studied increasing extraction into solution. It m...

Roasting is a process that contributes to the formation of compounds and flavors in coffee beans. Temperature length time are main factors roasting process. Generally, range temperatures times varies significantly for different varieties This study aims determine effect on changes chemical characteristics robusta beans (Coffea canephora) from Sidomulyo Village. used brewing methods brew roasted...

Ferronickel slag is a by-product of the nickel smelting process. Recycling ferronickel required since it contains valuable elements besides its potency to pollute environment. In order take advantage materials and reducing potential hazard, beneficiation essential. Alkali fusion using Na2CO3 in roasting process was carried out. This study aims determine decomposition mixture slag-Na2CO3 Roastin...

Copper mine tailings are the residual products after the purification of precious copper from copper ores, and their storage can create numerous environmental problems. Many researchers have used copper mine tailings for preparation of geopolymer. This paper studies the enhancement of the cementitious activity of copper mine tailings in geopolymer system. First, copper mine tailings are activat...

The influence that food heating has on the concentration of acrylamide in home-cooked potato dishes prepared by high-temperature, such as pan-frying, deep-frying, roasting and microwave heating was analyzed. The experiment was performed with commercially available deep-frozen par-fried French fries and deep-frozen par-fried potato products other than French fries (cubes, wedges, noisettes, panc...

Coffea arabica (arabica) and Coffea canephora (robusta) are the most important coffee species. Arabica has higher commercial value and, in general, more favorable sensory characteristics. After roasting, analytical methods are required to differentiate species. Blends with different proportions of arabica/robusta coffees, roasted at three degrees were studied. Color parameters and the levels of...

Central composite rotatable of response surface methodology experimental design was used to determine effect of mash quantity and roasting duration on physical, pasting and sensory properties of gari. Five levels of quantity (317, 400, 600, 800 and 882.2 g) and roasting time (37.1, 35, 40, 45 and 47.1 min) were used at a fixed roasting temperature (95oC). The responses were moisture, pH, bulk d...

Copper-mine tailings are the residual products after the extraction of precious copper metal from copper ores, and their storage can create numerous environmental problems. Many researchers have used copper-mine tailings for the preparation of geopolymers. This paper studies the enhancement of the cementitious activity of copper-mine tailings in geopolymer systems. First, copper-mine tailings a...

Roasted soybeans are commonly used in diets for dairy cows, but the processing conditions of roasted soybean and their effects on rumen undegradable protein (RUP) have not been fully understood. In this study, the effect of the processing of roasted soybean on RUP was examined through a factorial arrangement of treatments. The effects of roasting temperature (115 oC, 130 oC and 145 oC), time of...