CO2 reforming of methane (CRM) over unpromoted and potassium promoted Ni/Al2O3 catalysts was studied. The catalysts were prepared by impregnation method and characterized by X-ray diffraction (XRD), N2 adsorption (BET), temperature programmed reduction (TPR), temperature programmed oxidation (TPO) and scanning electron microscope (SEM) techniques. The obtained results showed that addition of K2...

Abstract The high use of aluminium foil in food and beverage packaging has caused solid waste to increase rapidly, so treatment is required. This study investigates the best concentration reactant recovery from as potash alum coagulant. Potassium hydroxide used for dissolved aluminium, sulphuric acid added form crystals. experimental result got a maximum point synthesis foil: potassium 3 M dan ...

ABSTRACT The objective of this study was to evaluate the effects different combinations nitrogen and potassium fertilization on gas exchange chlorophyll a fluorescence in seedlings guava cv. Paluma irrigated with water salinity levels. experiment set up randomized block design analyzed 5 × 4 factorial scheme, four replicates. treatments were composed combination factor electrical conductivity i...

Hydrogeological research usually includes some statistical studies devised to elucidate mean background state, characterise relationships among different hydrochemical parameters, and show the influence of human activities. These goals are achieved either by means of a statistical approach or by mixing models between end-members. Compositional data analysis has proved to be effective with the f...

This book is published jointly by the International Potash Institute (IPI) and the International Fertilizer Industry Association (IFA). It discusses the possibilities and constraints to food production on the many different soil types found in tropical and subtropical countries. By indicating ways in which crop nutrition and hence crop production can be increased on these soils in developing co...

Investigations of the plant food requirements for sugarcane grown on the wind-blown, sandy soils of marine origin typical of the Natal coast, have. occupied the' attention, of numerous investigat6rsin past 'years. In some cases there has been shown to be little response to phosphate, whilst in the case of inorganic salts of potash and nitrogen a lack. of response or even a depressing effect on ...