488 Articles found
IWA Publishing Articles
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ADM1 modelling of large-scale covered in-ground anaerobic reactor treating sugarcane vinasse
In this paper, we demonstrate in a clear procedure the application of the Anaerobic Digestion Model No. 1 (ADM1) to model a large-scale covered in-ground anaerobic reactor (Cigar), processing sugarcane vinasse from a biorefinery in Brazil. The ...
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Adsorption of methyl orange dye onto biochar adsorbent prepared from chicken manure
In this work, the biochar adsorbent carboxymethyl cellulose (CMC), was prepared from the pyrolysis (600 °C, 120 min) of chicken manure for the removal of methyl orange (MO) from aqueous solution, and its physicochemical properties were ...
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Faecal sludge reuse in Birendranagar, Nepal: a case study of the world health organisation's multiple barrier approach
This case study presents an innovative initiative to facilitate safe reuse of faecal sludge (FS) by introducing the World Health Organisation's multi-barrier approach within a Farmer Field Schools framework for participatory experiential ...
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Combined yeast and microalgal cultivation in a pilot-scale raceway pond for urban wastewater treatment and potential biodiesel production
A mixed culture of oleaginous yeast Lipomyces starkeyi and wastewater native microalgae (mostly Scenedesmus sp. and Chlorella sp.) was performed to enhance lipid and biomass production from urban wastewaters. A 400 L raceway pond, operating ...
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Plant growth and nutrient uptake in treatment wetlands for water with low pollutant concentration
The objective of this study was to determine how macrophytes commonly used in treatment wetlands (TWs) respond to water with low pollutant concentration. We measured pollutant removal efficiency and compared growth and nutrient uptake of five ...
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Season matters when sampling streams for swine CAFO waste pollution impacts
Concentrated (or confined) animal feed operations (CAFOs) are the principal means of livestock production in the United States, and such facilities pollute nearby waterways because of their waste management practices; CAFO waste is pumped from ...
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Adsorption and desorption of uranium(VI) onto humic acids derived from uranium-enriched lignites
Humic acids (HAs) were extracted and characterized from three kinds of uranium-enriched lignites from Yunnan province, China. Batch experiments were used to study the adsorption and desorption behavior of uranium (VI) onto these HAs and a ...
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Comparison of hybrid models for daily streamflow prediction in a forested basin
Accurate forecasting of daily streamflow is essential for water resource planning and management. As a typical non-stationary time series, it is difficult to avoid the effects of noise in the hydrological data. In this study, the wavelet ...
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Immobilization of halophilic yeast for effective removal of phenol in hypersaline conditions
A halotolerant yeast strain of Candida sp. was purified for phenol biodegradation and was immobilized in alginate and nano-SiO2. The concentration of nanoscale SiO2 was optimized and phenol degradation performance with different initial phenol ...
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Adsorption of Methylene blue and Rhodamine B by using biochar derived from Pongamia glabra seed cover
Biochar obtained through the pyrolysis of Pongamia glabra seed cover (PGSC) at 550 °C with a heating rate of 40 °C/min was characterized and its ability to adsorb the dyes Methylene blue (MB) and Rhodamine B (RB) from aqueous solutions was ...
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Punica granatum (pomegranate) carpellary membrane and its modified form used as adsorbent for removal of cadmium (II) ions from aqueous solution
Punica granatum carpellary membrane (PGCM) has been chemically modified with 2,4-dinitrophenylhydrazine by one step reaction process. Pristine PGCM and modified Punica granatum carpellary membrane (MPGCM) have been employed as adsorbents ...
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Adaptation and mitigation of climate change in vegetable cultivation: a review
Climate change is an unavoidable phenomenon of natural and anthropogenic origin against which mitigation and adaptation are required to reduce the magnitude of impact and vulnerability, to avoid risk in vegetable farming and to ensure ...
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Evaluation of the impacts of climate variability on rainfed maize production over the Wami-Ruvu basin of Tanzania
In this study, the impact of inter-seasonal climate variability on rainfed maize (Zea mays) production over the Wami-Ruvu basin of Tanzania is evaluated. Daily high-resolution climate simulations from the Coordinated Regional Climate Downscaling ...
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Modeling biosorption of Cr(VI) onto Ulva compressa L. from aqueous solutions
The marine biomass Ulva compressa L. (ECL) was used as a low-cost biosorbent for the removal of Cr(VI) from contaminated aqueous solutions. The operating variables were optimized: pH ∼ 2, initial concentration of 25 mg/L, solid/liquid ratio of 6 ...
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Critical review of salinity intrusion in rivers and estuaries
There is scientific evidence of accelerated sea level rise and saline intrusion. Some impacts, such as stratification and estuarine circulation, are subtle; others are dramatic including shifts in salt-sensitive habitats and limited water ...
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Macroalgae of Iridaea cordata as an efficient biosorbent to remove hazardous cationic dyes from aqueous solutions
In the present work, Iridaea cordata (IC), a red marine macroalgae, was used as an efficient biosorbent for the removal of crystal violet (CV) and methylene blue (MB) dyes from aqueous solutions. The effects of pH (5, 7, and 9) and IC ...
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Moringa oleifera functionalised sand – reuse with non-ionic surfactant dodecyl glucoside
Moringa oleifera seeds are well known for their ability to cause flocculation in turbid water and facilitate bacterial inhibition. These effects are due to the cationic polypeptide MO2.1, which affects the surface charge of suspended ...
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Prevalence and types of Campylobacter on poultry farms and in their direct environment
To study whether broiler and layer farms contribute to the environmental Campylobacter load, environmental matrices at or close to farms, and caecal material from chickens, were examined. Similarity between Campylobacter from poultry and ...
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A novel biochar derived from cauliflower (Brassica oleracea L.) roots could remove norfloxacin and chlortetracycline efficiently
The biochar was prepared by pyrolyzing the roots of cauliflowers, at a temperature of 500 °C under oxygen-limited conditions. The structure and characteristics of the biochar were examined using scanning electron microscopy, an energy dispersive ...
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Bed material load estimation in channels using machine learning and meta-heuristic methods
This study is trying to develop an alternative approach to the issues of sediment transport simulation. A machine learning method, named least square support vector regression (LSSVR) and a meta-heuristic approach, called particle swarm ...