232 Articles found
IWA Publishing Articles
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NaA zeolite derived from blast furnace slag: its application for ammonium removal
In this paper, high value added NaA zeolite material was prepared from blast furnace (BF) slag by hydrothermal method and its adsorption behavior on the removal of ammonium ion was investigated. It was found out that the synthetic NaA cubic ...
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Laboratory investigation of hydraulic characteristics of fly ash as a fill material from the aspects of pollutant transport
Depending on the usage of fly ash, it is necessary to determine its environmental parameters, such as the potential for pollutant transport/leaching after its built-in. This study presents a methodology for determination of transport parameters ...
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Verification of CFD tool for simulation of cavitating flows in hydraulic systems
Cavitation is an undesirable phenomenon in hydraulic systems, as it causes erosion and noise. The main difficulty in cavitation prediction when using Fluent software is lack of an openly accessible tool for implementation of a freely chosen ...
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Modified ADM1 for high-rate anaerobic co-digestion of thermally pre-treated brewery surplus yeast wastewater
Co-digestion of surplus yeast with brewery wastewater is a potentially economical method for recovering energy, in the form of biogas, from this difficult to dispose of by-product. In this work a modified version of the ADM1 (Anaerobic Digestion ...
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Assessing biodiesel quality parameters for wastewater grown Chlorella sp.
Microalgae are reported as the efficient source of renewable biodiesel which should be able to meet the global demand of transport fuels. Present study is focused on assessment of wastewater grown indigenous microalga Chlorella sp. for fuel ...
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Solar radiation (PAR, UV-A, UV-B) penetration in a shallow maturation pond operating in a tropical climate
Solar radiation is considered the primary route for disinfection of pathogenic bacteria in maturation ponds. There is scarce information on depth profiling and attenuation of photosynthetically active radiation (PAR), UV-A and UV-B in shallow ...
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Natural vs. anthropogenic effects in the composition of dissolved inorganic carbon in a boreal river with a seasonal base flow component
Studying the carbon balance in surface waters gives information on the annual cycles of photosynthesis and respiration. It also provides insight on the water body's capability to serve as a source or sink for atmospheric CO2, which may be ...
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Comparative evaluation of conventional and microwave hydrothermal carbonization of human biowaste for value recovery
This paper compares conventional and microwave hydrothermal carbonization (HTC) of human biowaste (HBW) at 160 °C, 180 °C and 200 °C as a potential technology to recover valuable carbonaceous solid fuel char and organic-rich liquor. Also ...
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Multi-objective evolutionary polynomial regression-based prediction of energy consumption probing
Electrocoagulation (EC) is employed to investigate the energy consumption (EnC) of synthetic wastewater. In order to find the best process conditions, the influence of various parameters including initial pH, initial dye concentration, applied ...
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Adsorption behavior of methyl orange onto an aluminum-based metal organic framework, MIL-68(Al)
MIL-68(Al), a powdered aluminum-based metal organic framework (MOF), was synthesized and used to explore its adsorption behavior toward methyl orange (MO). The adsorption isotherm, thermodynamics, kinetics, and some key operating factors as well ...
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Characterisation of colloids using asymmetrical flow field-flow fractionation and online organic carbon detection
Asymmetrical flow field-flow fractionation (AF4) has been used to characterise the size and organic carbon concentration of colloids in environmental samples, without extensive pre-treatment. The addition of a true online organic carbon detector ...
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Rendering fecal waste safe for reuse via a cost-effective solar concentrator
The goal of this work was to design a cost-effective solar-thermal waste treatment unit and evaluate its ability to render fecal waste safe for reuse. Three trials were conducted from December 2011 through February 2012 in FAVET-Universidad de ...
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Effect of ammonia on methane production pathways and reaction rates in acetate-fed biogas processes
In order to understand the correlation between ammonia and methanogenesis metabolism, methane production pathways and their specific rates were studied at total ammonium nitrogen (TAN) concentrations of 0.14–9 g/L in three methanogenic sludges ...
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Framing the Brahmaputra River hydropower development: different concerns in riparian and international media reporting
Development of the Brahmaputra River, which links China, India and Bangladesh, has been hindered by significant challenges, particularly political challenges. News reports can mirror the perceptions of political actors, but are, owing to the ...
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Isotherm models and kinetics of copper adsorption by using hydrochar produced from hydrothermal carbonization of faecal sludge
Low cost adsorbents have been extensively reported for use as a promising substitution for commercial adsorbents for pollutant removal in water and wastewater treatment. In this study, hydrochar produced from the hydrothermal carbonization (HTC) ...
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Aerobic granular biomass technology: advancements in design, applications and further developments
Aerobic granular sludge is seen as the future standard for industrial and municipal wastewater treatment. Through a Dutch research and development program, a full-scale aerobic granular biomass technology has been developed – the Nereda® ...
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Optimization of copper removal from aqueous solutions in a continuous electrochemical cell divided by cellulosic separator
Copper, as an inseparable part of many industrial discharges, threatens both public and environmental health. In this work, an electrochemical cell utilizing a cellulosic separator was used to evaluate Cu removal using graphite anodes and ...
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Comparison of phosphorus recovery from incineration and gasification sewage sludge ash
Incineration of sewage sludge is a common practice in many western countries. Gasification is an attractive option because of its high energy efficiency and flexibility in the usage of the produced gas. However, they both unavoidably produce ...
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Distribution of mean flow and turbulence statistics in plunge pools
When the capacity of the spillway of a dam is exceeded for a given flood, overtopping occurs; in such cases potentially dangerous hydrodynamic actions and scour downstream of the dam need to be foreseen. Detailed studies of jets impinging in ...
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The elimination of siloxanes from the biogas of a wastewater treatment plant by means of an adsorption process
Siloxanes present in the biogas produced during anaerobic digestion in wastewater treatment plants (WWTPs) can damage the mechanism of cogeneration heat engines and obstruct the process of energy valorization. The objective of this research is ...