Showing papers in "Journal of Hazardous Materials in 2000"

TL;DR: Locally available sawdust, a byproduct of the world industry, was found to be a low cost and promising adsorbent for the removal of copper(II) from wastewater and provides strong evidence to support the hypothesis of adsorption mechanism.

TL;DR: The ability of fruit peel of orange to remove Zn, Ni, Cu, Pb and Cr from aqueous solution by adsorption was studied and the extent of removal was found to be dependent on sorbent dose, initial concentration, pH and temperature.

TL;DR: It was shown that all equilibrium isotherms could be well fitted by the Langmuir equation and the rates of dye adsorption on both types of chitosans indicated different controlling mechanisms.

TL;DR: This article reviews the process of public response to warnings of an impending nuclear power plant emergency and provides an overview and synthesis of the warning response process.

TL;DR: Options available for dealing with arsenic wastes, both solid and aqueous through an investigation of the methods available for the removal of arsenic from wastewater as well as possible solidification/stabilization options for a variety of waste streams are reviewed.

TL;DR: Results indicate that the use of agricultural waste byproducts could be a better alternative for the removal and subsequent reduction of Cr(VI) to Cr(III) from contaminated waters.

TL;DR: Higher density of denitrifying bacteria in the biofilm, observed when ethanol and methanol were amended to the influent, suggested that these carbon sources increased the denitrification activity compared with the experiments performed with sucrose.

TL;DR: This study used a NaClO2/NaOH solution as the additive/absorbent to determine the extent of NOx removal in a wet scrubbing system and found that the maximum DeNOx and DeSOx efficiencies ranged from 36.6 to 71.9% and from 89.4 to 100.0%, respectively.

TL;DR: In the Netherlands, external safety policy has been developed and implemented since the early eighties on the basis of a risk-based approach involving quantitative criteria for the tolerability of risk to balance between risk control measures at the source through the licensing system, and spatial planning instruments to protect, e.g. residential areas against major hazards.

TL;DR: A novel and integrated hydrometallurgical process for the production of zinc powder from electric arc furnace (EAF) dust in alkaline medium is reported, finding that 38% of zinc and 68% of lead could be extracted from the dust when leached directly in caustic soda solution.

TL;DR: In this paper, an Anatase-structured TiO2 thin films were deposited on window glass by CVD, and the photocatalytic dissociation rates of benzene with CVD-grown TiO 2 under UV exposure were characterized.

TL;DR: Nine ways that emergency response training programs can be modified to improve the effectiveness of nuclear power plant personnel who must respond to accident conditions are identified.

TL;DR: The proposed adsorption equilibrium model adequately describes the sorption behavior of phenols by XAD-4 resin and was found to correlate with the octanol/water partition coefficients of various phenol compounds.

TL;DR: A new methodology based on risk analysis for the selection of the best route for the transport of a hazardous substance by determining for a specific hazardous substance the cheapest flow distribution, honouring the arc capacities, from the origin nodes to the destination nodes is introduced.

TL;DR: The current scrap computer recycling system in Taiwan is outlined, which mandates that only six computer items are mandated to be recycled in this recycling program.

TL;DR: Morphological characterization of FAZ using scanning electron microscopy (SEM) reveals cubic structure, and XRD data reveal unit cells to be cubic system, compare well with the commercial zeolites procured from Mobil Oil.

TL;DR: A database of 49 completed in-situ air sparging case studies was compiled to address questions regarding the effectiveness and permanence of airSparging, and to provide predictive indicators of air Sparging success to aid in optimization of existing and future air sp arging systems.

TL;DR: The fractionated approach concept showed to be very beneficial in the study of DBP precursors and their effective removal by physical and chemical treatment.

TL;DR: Natural weathering of MSWI bottom ash for a period of about 90 days reduced the leaching of heavy metals, stabilising the bottom ash pH to minimise the solubility of metal hydroxides, and enabled the residue to be used as secondary building material.

TL;DR: The spectral data, complemented by information on elemental concentrations from proton-induced X-ray-emission (PIXE) spectroscopy, were used to interpret the speciation of these elements in these complex materials and showed that all the metallic elements investigated occur in oxidized forms.

TL;DR: For the amorphous and crystalline phases studied, the immobilization of phosphate in the Type F fly ash is attributed to the formation of insoluble aluminum and iron phosphates at low to medium values of pH.

TL;DR: Evacuation time estimate analyses are conducted to provide data to emergency decision-makers that indicate if evacuation can be implemented in time to significantly reduce radiation exposures and provide information relevant to the development of effective traffic management plans.

TL;DR: The leaching test on the residues after the treatment with chelating agents showed that the fly ashes were successfully detoxified to meet the guideline for landfilling.

TL;DR: In this paper, simulated electrokinetic remediation was conducted in saturated kaolinite specimens loaded with lead(II) using an electrolyte circulation method to control electrolyte pH.

TL;DR: A step wise methodology for safety improvements in ports has been developed to establish hazard barriers which are or should be in place to prevent hazards from being released.

TL;DR: A multistage process was proposed as an alternative for enhancement of the heavy removal of the single-stage process and the theoretical model permits determination of the inter-stage heavy metal concentrations and the total amount of chelating resin required for achieving a desired level of heavy metal removal.

TL;DR: In the air and baseline gas studies, the catalytic carbons exhibited far better sorption than the lignite- and bituminous-derived carbons, providing a clear demonstration that O(2) is required in the gas stream for higher reactivities and capacities.

TL;DR: Fly ash from coal-fired thermal power plants can be used for the removal of 2-chlorophenol and 2,4-dichlorophenol with enthalpy changes of about -3 kcal/mol, and chlorophenols in the wastewater were also removed efficiently, with breakthrough times being inversely proportional to flow rates.

TL;DR: A number of decisive steps in the process of deriving the national emission ceilings are presented here: the way of framing interim objectives, how to choose an appropriate ambition level, aspects of how to cope with uncertainties in the model and the input data and how to resolve problems in the spatial distribution of the interim objectives given the different size of countries.

TL;DR: A process design based on treating only the aromatic fraction of petroleum may provide significantly lower costs when using modified Fenton's reagent for the treatment of contaminated soils and groundwater.