extraction of peat bitumens

in the reported experiments, a comparative physicochemical characterization has been made of the bitumens obtained by the extraction of a sample of cottongrass-sphagnum peat with type br-2 gasoline, hexane, benzene, perchloroethylene, chloroform and dioxane the bitumens isolated have been re-extracted with gasoline, benzene and perchloroe..

differing effects of cadmium on two varieties of cottonwood populus deltoides bartr

two varieties of cottonwood were grown under greenhouse conditions in soil treated with differing amounts of cadmium chloride to compare various parameters of growth and uptake. plants were germinated and grown through one growing season of 14 weeks following harvest, cadmium concentrations were determined in leaf, stem and root tissue by..

reducing energy consumption in the production and distribution of utilities at a large university medical center

this paper presents the study methodology, solution options, final recommendations and cost benefits of modifying the central steam and chilled water system at the university of oklahoma health sciences center in order to minimize energy consumption in both the production and distribution of steam and chilled water. the results of the ana..

chemical and gamma-ray-modified bagasse as substrates for bioproduction of cellulases and protein

production of enzymes in the cellulolytic complex was determined in culture filtrates of six fungal isolates grown on chemically treated or gamma-irradiated bagasse. the enzymatic activities of the filtrates were determined by measurement of glucose release from cotton, filter paper, carboxymethylcellulose, cellobiose, and cellobiose octa..

reverse osmosis treatment and reuse of textile dyehouse effluents

a pilot-plant consisting of screening, alum coagulation, microfiltration and reverse osmosis was operated for 2 years on cotton/nylon/polyester dyehouse effluents. reverse osmosis modules were used. the pilot-plant operated at water recoveries of 85-95 and temperatures of 30-45 $degree$ c. the microfiltration unit was used to remove suspe..

proceedings of the world conference on oilseed and edible oil processing, 1982

this volume contains proceedings of 66 papers delivered at the meeting. technology of oilseed processing by mechanical means (expellers) as well as by solvent extraction is discussed in many papers. among others the production of the following raw vegetable oils is covered - palm oil, rapeseed oil, soybean oil, cottonseed oil and corn (ma..

vegetable oil fuels: proceedings of the international conference on plant and vegetable oils as fuels, 1982

this conference proceedings contains 44 papers. the discussions cover the use of plant and vegetable oils as substitutes or extenders for fossil-derived diesel fuels for agriculture. the vegetable and plant oils discussed include sunflower seed oil, soybean oil, corn oil, cottonseed oil, peanut oil, coconut oil, safflower seed oil and rap..

soil salinity and lithium toxicity

the salt affected soils and saline ground waters usually contain lithium. the content of lithium increases with salinity soluble lithium (saturation extract) and extractable lithium (ammonium acetate) has been observed to be about 0. 5 and 2. 5 ppm, respectively, in highly saline soils. the tolerance to lithium varies from plant to plant...

investigation of 1-decyne formation in cottonseed oil fried foods

this paper is concerned with 1-decyne which is a degradative product from the photooxidation of cyclopropenoid fatty acids (cpfa) naturally present in cottonseed oil. experiments were conducted to identify the factors involved in 1-decyne formation. reactions were done under the following conditions: (a) in the dark or under light, (b) wi..

toxicity of fluometuron and diuron on the intermediate snail host (lymnea spp. ) of fasciola hepatica

fluometuron and diuron are urea herbicides used for weed control in cotton and sugarcane. they are known to inhibit the hill reaction which involves the oxygen evolution site of the photosystem ii. the inhibition prevents the formation of atp and nadpah which are necessary for co//2 fixation. previous studies performed with fluometuron in..