Band broadening theory (Van Deemter equation) It is well recognized now that column band broadening originates from three main sources: 1. multiple path of an analyte through the column packing; 2. molecular diffusion; 3. effect of mass transfer between phases. In 1956 J.J. Van Deemter introduced the equation which combined all three sources and represented them as the dependence of the theoretical plate height (HETP) on the mobile phase linear velocity. Originally‚ it was introduced for gas
Premium Chromatography Gas chromatography Analytical chemistry
L.‚ Ismail‚ S.‚ & Bhatia‚ S. (2003). Water recycling from palm oil mill effluent (POME) using membrane technology. Desalination‚ 157(1–3)‚ 87–95. https://doi.org/10.1016/S0011-9164(03)00387-4 Ahmad‚ A. L.‚ Sumathi‚ S.‚ & Hameed‚ B. H. (2005a). Adsorption of residue oil from palm oil mill effluent using powder and flake chitosan: Equilibrium and kinetic studies. Water Research‚ 39(12)‚ 2483–2494. https://doi.org/10.1016/j.watres.2005.03.035 Ahmad‚ A. L.‚ Sumathi‚ S.‚ & Hameed‚ B. H. (2005b). Residual
Premium Anaerobic digestion Anaerobic digestion Activated carbon
NOISE CONTROL OF TWO STROKE PETROL ENGINE USING AQUA SILENCER SYNOPSIS Air pollution is most important from the public health point of view‚ because every individual person breathes approximately 22000 times a day‚ inhaling about 15 to 22 Kg of air daily. Polluted air causes physical ill effect decides undesirable aesthetic and physiological effects. Air pollution can be defined as addition to our atmosphere of any material‚ which will have a deterious effect on life upon our planet. The main pollutants contribute
Premium Air pollution Environmentalism Pollution
Worksheet 1. Fill in: Transformation Transduction Conjugation a. Transformation _ naked DNA is involved b. Transduction ____faulty head stuffing may occur c. Conjugation_____ involves exconjugants d. Transduction____ adsorption and injection of genetic material e. Transformation__ competent cells required f. Conjugation ____ an F plasmid encodes attachment proteins g. Conjugation _____used to construct the E. coli minute map h. Conjugation_____ a pilus
Premium Bacteria DNA Escherichia coli
Dr.Tawfeq al.Qaimare Rifqa Shawer Lab report 5 21-3-2013 Adsorption Chromatography Introduction: The technique of adsorption chromatography may be illustrated by a description of how two dyes are separated when a solution of the dyes is passed through a column of powdered silica contained in a vertical glass tube‚ it’s a method used to separate solids or liquids. At the first the two dyes are adsorbed at the top of the column‚ giving this region a nearly dark blue color. However‚ when
Premium Chromatography Separation process Green
CHAPTER I AIR POLLUTANTS: SOURCES AND CONTROL OF GASES Introduction: 1. According to the World Bank‚ in 2007 air pollution cost about 3.8% of China’s 2. gross domestic product‚ mainly from diseases and loss of lives. 3. World Health Organization estimates that in India alone about 500‚000 premature deaths are caused each year by indoor air pollution. 4. Serious respiratory disease-related problems have been identified for both indoor and outdoor pollution in major cities of several countries. 5.
Premium Ozone Oxygen Air pollution
INTRODUCTION From natural gas‚ crude oils‚ and other fossil materials such as coal‚ few intermediates are produced that are not hydrocarbon compounds. The important intermediates discussed here are hydrogen‚ sulfur‚ carbon black‚ and synthesis gas. Synthesis gas consists of a nonhydrocarbon mixture (H2‚CO) obtain- able from more than one source. It is included in this chapter and is fur- ther noted in Chapter 5 in relation to methane as a major feedstock for this mixture. This chapter discusses
Premium Petroleum Hydrogen Sulfur
Healing Wonders of Charcoal Chapter One The Problem Introduction The use of charcoal as a simple remedy for different health problems is an ancient way of treating many common diseases that afflict humankind dates back to the time of Hippocrates who lived from 460 to 370 B.C. In the late 1800‚ Ellen G. White spearheaded the use of charcoal in the treatment of different diseases. A sincere and prayerful Christian‚ she wrote many books including health books such as: Ministry of Healing‚ Medical
Premium Activated carbon
CHROMOTOGRAPHY Chromatography is used to separate mixtures of substances into their components. All forms of chromatography work on the same principle that they all have a stationary phase (a solid or a liquid supported on a solid) and a mobile phase where liquid or a gas is involved. The mobile phase flows through the stationary phase and carries the components of the mixtures with it. Different components travel at different rates. In paper chromatography‚ the stationary phase is a very uniform
Premium High performance liquid chromatography Chromatography Analytical chemistry
Column Chromatography of Plant Pigments Paul Ibarbia‚ Gene Paolo Jasmin‚ Gianpaolo Jimenez and Lorenzo Labicane* Department of Biology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Column chromatography of plant pigments is the separation of plant pigments extracted from Capsicum frutescens (siling labuyo). No slurry is prepared of the eluent; eluent with the stationary phase is set and then carefully poured into the column. The eluent are the solvents which are responsible for the
Premium Chromatography Gas chromatography