Showing papers in "Journal of Hazardous Materials in 1994"

TL;DR: In this paper, a new method for treatment of waste waters from tanneries containing chrome and large amounts of other inorganic compounds has been studied, and it was found that the addition of cement at suitable temperature and pH results in a decrease of Cr(III and Fe(III) contents.

TL;DR: In this paper, the Fenton-like oxidation of hexachlorobenzene was investigated in silica sand and a natural soil using a number of process conditions including catalysis by soluble iron and naturally-occurring iron minerals coupled with a range of hydrogen peroxide concentrations from 3 m M to 300 m M (100 mgl −1 to 10 000 mgl−1 ).

TL;DR: In this article, a model of membrane distillation was suggested for describing the MD-process through hydrophobic microporous membrane and the expressions for vapour flux of solvent through membrane was determined and influence of different membrane characteristics (the membrane thickness, the average value of the membrane pore size, etc.) and experimental conditions on the vapour flow has been analyzed.

TL;DR: In this article, the sorption and desorption characteristics of the major components of gasoline were determined for five media; sandy loam soil, organic top soil, clay soil, peat moss and granular activated carbon (GAC).

TL;DR: In this article, the feasibility of a process for ammonia removal and recovery from high temperature waste waters is assessed, where NH 3 is stripped away in a packed column by means of air which is continuously looped to a further absorption unit.

TL;DR: In this article, the authors investigated and examined an innovative technique of in-situ flushing using colloidal gas aphron suspensions (CGA) generated from surfactant solutions.

TL;DR: In this paper, the authors present a practical strategy for their design and concentrates on the eventual utilization and beneficiation of incinerator ash, which can reduce the total cost of sludge treatment and disposal.

TL;DR: In this article, the authors present a systematic design technique for optimizing the selection of refrigeration systems for gaseous emissions with multiple volatile organic compounds (VOCs) from a magnetic tape manufacturing plant.

TL;DR: In this paper, the mixing process and build-up of gas concentration occurring within a nominally unventilated enclosure as a result of a release of natural gas are investigated in terms of dimensionless parameters.

TL;DR: In this article, the effects of hydrogen pressure on the catalytic hydrodechlorination of 1,2,3-trichlorobenzene using the unsulphided and sulphided forms of NiMoγ-Al2O3 catalyst were investigated.

TL;DR: In this article, a tracer gas method was used to determine the air change rates in the vehicles for different wind speeds and directions, which enabled a constant to be evaluated which enabled infiltration rates to be found for other vehicles in terms of leakage characteristics and wind conditions.

TL;DR: In this paper, the authors present results from several Master's thesis studies that relate to: arsenic removal from solution, stabilization of arsenic bearing waste materials, and recovery of arsenic from metallurgical waste and by-products.

TL;DR: In this article, two types of brown coal, oxyhumolite and peat were studied with respect to their ability to remove heavy metals from waste waters, and the results showed that the calcium loaded form of these materials can be effectively used for metal extraction by ion exchange with calcium.

TL;DR: An improved model for simulating vapor emissions from a multicomponent liquid spill (LSM90) has been developed incorporating three mechanisms for transfer to the gas phase: (i) flashing liquid, (ii) entrainment as aerosol, and (iii) liquid pool evaporation as mentioned in this paper.

TL;DR: In this article, a multicomponent form of the Brunauer-Emmett-Teller equation with finite number of adsorption layers was used to account for the strong competition they experience from water and any competition between themselves.

TL;DR: A more current document, released in 1991, incorporates some additional data on the epidemiology and toxicology of formaldehyde that the EPA has received since completion of the earlier assessment, and examines the impact of this information on the estimates of health risks following exposure to airborne formaldehyde.

TL;DR: In laboraotry studies, the encapsulated sodium percarbonate was used to provide oxygen as an electron acceptor for microorganisms during the biodegradation of propylene glycol.

TL;DR: In this paper, the three-dimensional finite volume code ADREA-HF is used to perform a computational simulation of the Thorney Island Dense Gas Trial No. 21.

TL;DR: PCP was found to be a non-competitive inhibitor of Ps.

TL;DR: In this article, the energy content of red oil materials was found to be in the range from 30 to 444 J g −1 (7.2-106.1 cal g − 1 ) as determined by DSC in open pans in the temperature range 20-350°C.

TL;DR: In this article, a two-level procedure for the reduction of the global emission of a chemical company is described, where the main goal is to utilise the waste of a plant in another plant that is to design closed-cycle processing.

TL;DR: In this paper, the authors derived correlations for the estimation of aqueous solubilities and octanol-water partition coefficients for pesticides, based solely on their molecular structure, and used these correlations to predict the logarithm of the poly(n) for pesticides having a carbon to hydrogen ratio >/ 2.

TL;DR: In this article, a critical temperature of 1000 °C-1100 °C for the formation of polycyclic aromatic hydrocarbons (PAHs) and soot particulates from incineration of polystyrene was investigated.

TL;DR: In this article, a code-comparison exercise was considered to be a valuable contribution to the validation of these codes, though no direct comparison with experimental data has been made.

TL;DR: In this article, an improved method for removal of fluorine from ground water and chromium simultaneously from industrial waste waters is presented, which consists of two stages, first iron(II) and calcium hydroxide solutions are added and the sediment is separated.

TL;DR: In this article, Bromobutyl rubber (BIIR), chlorosulfonated polyethylene (Polyethylene) and epichlorohydrin (ECO) were evaluated for exposure to chloroalkanes and non-chlorinated liquids.

TL;DR: In this article, the leachability of metals from municipal solid waste (MSW) flyash was compared for various solvents, including H2O, NaOH, HCl, H2SO4 and HClO4.