Showing papers in "Water Research in 1980"

TL;DR: In this article, a sedimentological risk index for toxic substances in limnic systems should at least, account for the following four requirements: the following: the quality of the sediment, the water quality, the sediment quality, and the sediment diversity.

TL;DR: A generalized sensitivity analysis was carried out on a phosphorous based model of cultural eutrophication processes in the Peel Inlet of Western Australia as mentioned in this paper, and the main hypothesis suggested by the results is that the nuisance alga, Cladophora aff. battersii, have access to nutrients in the interstitial water of the sediments in the Inlet and that a significant quantity of nutrient is deposited in the major area of Cladsora growth by river-borne sediment.

TL;DR: In this article, the rate of adsorption of Astrazone Blue, a basic dye, on Sorbsil Silica has been studied, where particle size, initial dye concentration, agitation and dye solution temperature were all considered.

TL;DR: In this article, the results of a number of laboratory studies are presented to demonstrate an inverse relationship between concentration of adsorbing solids and partition coefficient and the significance of this relationship in assessing the fate of hydrophobic pollutants in natural water systems is discussed.

TL;DR: It is found that a determination of the toxicity threshold of potential water pollutants for these three model organisms from the microbiological spectrum would provide a broader basis for assessing the damaging action of water pollutants to model organisms active in the biological self-purification of water.

TL;DR: The effect of dissolved oxygen concentration on the rate of nitrification has been investigated by a number of researchers using both pure and mixed cultures, and cultures found in wastewater treatment systems.

TL;DR: The problem of cultural eutrophication in Peel Inlet, Western Australia, where the system behavior of interest is the excessive growth of the alga Cladophora, is amenable to a phosphorus-based model and provides one feasible explanation of this nuisance algal problem.

TL;DR: In this paper, a commercially supplied humic acid, extracts of a Michigan Finch soil, and extracts of leaves from a hardwood forest were characterized by molecular size fractionation, functional group analysis, and haloform formation potential.

TL;DR: Threshold odour concentrations are presented, and they indicate that both compounds have strong odour characteristics and indicate that it may be possible to quantify muddy odour compounds in water and fish by sensory methods.

TL;DR: In this paper, a state-of-the-art review concerning the transport of nutrients (N and P), oxygen demanding compounds (BOD and COD), indicator organisms and pathogens in runoff from land areas receiving animal wastes is presented.

TL;DR: In this article, the fundamental phenomenon of the interaction between a solute or suspended particle and an ice-water interface during freezing is described extensively, revealing the fact that particles of different kinds, sizes and shapes interact in different ways with the solid-liquid interface.

TL;DR: In this article, a mineral medium containing 1% of glucose as the main carbon source was subjected to one-phase and two-phase anaerobic digestion processes under comparable conditions.

TL;DR: In this article, Rainbow trout were used to determine the effects of water alkalinity and hardness on the incipient lethal concentration (ILC) of copper, and the toxicity of various combinations of copper and hydrogen ion were antagonistic but at pH 5.4 there appeared to be some synergism between pH and Cu toxicity.

TL;DR: A comprehensive review of the methods for handling distillery wastewater is presented in this article, where the most reliable system appears to be evaporation and incineration with the ash being returned to the soil as a fertiliser.

TL;DR: In this article, five principal analytical systems are used to evaluate the SOD measurement techniques, including batch (laboratory and in situ), continuous flow, manometric, electrolytic and dehydrogenase activity, and a SOD reaction chamber used in a laboratory provided reproducible data for replicate analyses of stream and lakes sediments and met the acceptability criteria.

TL;DR: In this paper, the performance characteristics of two activated carbons and eight synthetic adsorbents are compared and a new empirical adsorption isotherm is employed for description of adsorsorption equilibrium data.

TL;DR: In this paper, the adsorption of Astrazone blue (Basic Blue 69) on silica has been investigated and a series of static and fluidized bed experiments were undertaken and the results compared with existing design models for adorption columns.

TL;DR: In this paper, the authors evaluated four natural zeolites for ammonium removal from synthetic waste: clinoptilolite, erionite, mordenite and phillipsite provided by the Anaconda Company.

TL;DR: The role of the chemical species of the metal in the intoxication processes in waters of different levels of hardness, is considered as well as the reasons for explaining the observed effects by biological mechanisms as discussed by the authors.

TL;DR: The random occurrence of the chemical types in this list demonstrates that generalization on persistence in the environment cannot be made on the basis of chemical structure.

TL;DR: In this article, the behavior of 12 insecticides in soil and aqueous suspensions of soil and sediment was studied in the laboratory and the results indicated that adsorption, desorption and mobility of insecticides were dependent to a large extent on the nature of the adsorbents and water solubility of the insecticides.

TL;DR: In this paper, the mechanisms controlling virus inactivation in coastal waters are discussed; chemical and biological processes appear to be important but a purely thermal mechanism is probably not significant, while viral association with colloidal and particulate materials prolong survival and may enhance the transport of viruses to marine sediments.

TL;DR: F2 Virus appeared to be equally, or less resistant to potassium ferrate than were most bacteria, including E. coli, in buffered, distilled water at the pH values tested, and also in secondary effluent.

TL;DR: In this paper, a domestic sludge from a domestic sewage works was enriched with nitrifying bacteria by running a laboratory fermenter on ammonia-supplemented sewage, and this enriched culture was used to determine respirometrically the kinetics of microbial nitrification.

TL;DR: In this paper, a Chitosan/chitin mixture was studied as a potential agent for the removal of arsenic (V) from ground waters, and the arsenic concentration of contaminated waters was lowered to levels accepted by the Canadian Department of Health and Welfare and the World Health Organization upon treatment with the mixture and furthermore, the copper and sulfate levels were also reduced.

TL;DR: Clophen A50 was found to have a growth promoting effect and demonstrated several effects on reproduction and swimming performance, studied by the rotatory-flow technique, was not affected at the concentrations that gave effects on growth and reproduction.

TL;DR: In this paper, the authors used the herbicide atrazine to study mechanisms of bioaccumulation in a freshwater mollusc (Ancylus fluviatilis) and a fish (Coregonus fera).

TL;DR: In this paper, the authors used a sequencing batch reactor for denitrification of oxidized-nitrogen species in the presence of a cellular glycogen reserve during the denitification process.

TL;DR: Three species of aquatic fungi supported the growth of the freshwater shrimp and showed that the metal can be transferred from aquatic fungi to G. pulex, the first step in a food chain involving freshwater fish and higher organisms.