The Experts below are selected from a list of 24 Experts worldwide ranked by ideXlab platform
Nicholas J. Ashbolt - One of the best experts on this subject based on the ideXlab platform.
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INNOVATIVE PRODUCTION TREATMENT HYDROPONIC FARM FOR PRIMARY MUNICIPAL SEWAGE
2020Co-Authors: Abdellah A. Rababah, Nicholas J. AshboltAbstract:The objectives of this work were to investigate a conceptual layout for an inexpensive and simple system that would treat primary municipal wastewater to discharge standards. Furthermore, the system may provide an increased supply of safe water for irrigation with low operational costs and produce commercially valuable plants for small communities in arid and semi-arid areas. A commercial hydroponic system was adapted for this study and consisted of five gullies, 3 m long by 100 mm wide. Primary treated eCuent was used to irrigate lettuce in one series and a commercial nutrient solution was used to irrigate the same type of lettuce in another series as a control, both by nutrient film technique (NFT). Nutrient and suspended solids were eAciently removed by the NFT plant system. While no uptake of F-RNA bacteriophages were detected within lettuce leaves, uptake was apparent from spiked virus-sized particles (fluorescent 0.1 mm microspheres) and equivocal from spores of the Faecal Bacterium, Clostridium perfringens. Microbial data was used in a b-Poisson dose response model and indicated that the probability of infection for a single ingestion event of NFT grown lettuce grown on primary treated municipal eCuent was about 1.7% for viruses. Moreover, plants accumulated heavy metals in leaf tissues at concentrations higher than the maximum recommended levels for Australian and New Zealand food (As=6.5, Cd=3.8, Pb=20 mg kg ˇ1 ). Hence, it is recommended to evaluate ornamental or non-edible crops, such as essential oils, pyrethrum or flowers for sewage treatment. A conceptual layout for a full-scale production treatment hydroponic farm (PTHF) for small communities was based on modelling phosphorus removal with the hydroponic NFT experimental pilot plant. With NFT culture of lettuces, roots and other surfaces accounted for 67-72% of total phosphorous (TP) removal (by adsorption mechanisms). Based on empirical modelling, an influent TP 2-6 mg l ˇ1 PTHF would be expected to be economical for small communities (
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innovative production treatment hydroponic farm for primary municipal sewage utilisation
Water Research, 2000Co-Authors: Abdellah A. Rababah, Nicholas J. AshboltAbstract:Abstract The objectives of this work were to investigate a conceptual layout for an inexpensive and simple system that would treat primary municipal wastewater to discharge standards. Furthermore, the system may provide an increased supply of safe water for irrigation with low operational costs and produce commercially valuable plants for small communities in arid and semi-arid areas. A commercial hydroponic system was adapted for this study and consisted of five gullies, 3 m long by 100 mm wide. Primary treated effluent was used to irrigate lettuce in one series and a commercial nutrient solution was used to irrigate the same type of lettuce in another series as a control, both by nutrient film technique (NFT). Nutrient and suspended solids were efficiently removed by the NFT plant system. While no uptake of F-RNA bacteriophages were detected within lettuce leaves, uptake was apparent from spiked virus-sized particles (fluorescent 0.1 μ m microspheres) and equivocal from spores of the Faecal Bacterium, Clostridium perfringens . Microbial data was used in a β-Poisson dose response model and indicated that the probability of infection for a single ingestion event of NFT grown lettuce grown on primary treated municipal effluent was about 1.7% for viruses. Moreover, plants accumulated heavy metals in leaf tissues at concentrations higher than the maximum recommended levels for Australian and New Zealand food (As=6.5, Cd=3.8, Pb=20 mg kg −1 ). Hence, it is recommended to evaluate ornamental or non-edible crops, such as essential oils, pyrethrum or flowers for sewage treatment. A conceptual layout for a full-scale production treatment hydroponic farm (PTHF) for small communities was based on modelling phosphorus removal with the hydroponic NFT experimental pilot plant. With NFT culture of lettuces, roots and other surfaces accounted for 67–72% of total phosphorous (TP) removal (by adsorption mechanisms). Based on empirical modelling, an influent TP 2–6 mg l −1 PTHF would be expected to be economical for small communities ( −1 , SS −1 and BOD −1 . Lower values would be expected if the effluent was polished through a humus filter.
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innovative production treatment hydroponic farm for primary municipal sewage
2000Co-Authors: Abdellah A. Rababah, Nicholas J. AshboltAbstract:The objectives of this work were to investigate a conceptual layout for an inexpensive and simple system that would treat primary municipal wastewater to discharge standards. Furthermore, the system may provide an increased supply of safe water for irrigation with low operational costs and produce commercially valuable plants for small communities in arid and semi-arid areas. A commercial hydroponic system was adapted for this study and consisted of five gullies, 3 m long by 100 mm wide. Primary treated eCuent was used to irrigate lettuce in one series and a commercial nutrient solution was used to irrigate the same type of lettuce in another series as a control, both by nutrient film technique (NFT). Nutrient and suspended solids were eAciently removed by the NFT plant system. While no uptake of F-RNA bacteriophages were detected within lettuce leaves, uptake was apparent from spiked virus-sized particles (fluorescent 0.1 mm microspheres) and equivocal from spores of the Faecal Bacterium, Clostridium perfringens. Microbial data was used in a b-Poisson dose response model and indicated that the probability of infection for a single ingestion event of NFT grown lettuce grown on primary treated municipal eCuent was about 1.7% for viruses. Moreover, plants accumulated heavy metals in leaf tissues at concentrations higher than the maximum recommended levels for Australian and New Zealand food (As=6.5, Cd=3.8, Pb=20 mg kg ˇ1 ). Hence, it is recommended to evaluate ornamental or non-edible crops, such as essential oils, pyrethrum or flowers for sewage treatment. A conceptual layout for a full-scale production treatment hydroponic farm (PTHF) for small communities was based on modelling phosphorus removal with the hydroponic NFT experimental pilot plant. With NFT culture of lettuces, roots and other surfaces accounted for 67-72% of total phosphorous (TP) removal (by adsorption mechanisms). Based on empirical modelling, an influent TP 2-6 mg l ˇ1 PTHF would be expected to be economical for small communities (<400 people) and produce eCuent with TP <0.15 mg l ˇ1 , SS <2.5 mg l ˇ1 and BOD <55 mg l ˇ1 . Lower values would be expected if the
Abdellah A. Rababah - One of the best experts on this subject based on the ideXlab platform.
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INNOVATIVE PRODUCTION TREATMENT HYDROPONIC FARM FOR PRIMARY MUNICIPAL SEWAGE
2020Co-Authors: Abdellah A. Rababah, Nicholas J. AshboltAbstract:The objectives of this work were to investigate a conceptual layout for an inexpensive and simple system that would treat primary municipal wastewater to discharge standards. Furthermore, the system may provide an increased supply of safe water for irrigation with low operational costs and produce commercially valuable plants for small communities in arid and semi-arid areas. A commercial hydroponic system was adapted for this study and consisted of five gullies, 3 m long by 100 mm wide. Primary treated eCuent was used to irrigate lettuce in one series and a commercial nutrient solution was used to irrigate the same type of lettuce in another series as a control, both by nutrient film technique (NFT). Nutrient and suspended solids were eAciently removed by the NFT plant system. While no uptake of F-RNA bacteriophages were detected within lettuce leaves, uptake was apparent from spiked virus-sized particles (fluorescent 0.1 mm microspheres) and equivocal from spores of the Faecal Bacterium, Clostridium perfringens. Microbial data was used in a b-Poisson dose response model and indicated that the probability of infection for a single ingestion event of NFT grown lettuce grown on primary treated municipal eCuent was about 1.7% for viruses. Moreover, plants accumulated heavy metals in leaf tissues at concentrations higher than the maximum recommended levels for Australian and New Zealand food (As=6.5, Cd=3.8, Pb=20 mg kg ˇ1 ). Hence, it is recommended to evaluate ornamental or non-edible crops, such as essential oils, pyrethrum or flowers for sewage treatment. A conceptual layout for a full-scale production treatment hydroponic farm (PTHF) for small communities was based on modelling phosphorus removal with the hydroponic NFT experimental pilot plant. With NFT culture of lettuces, roots and other surfaces accounted for 67-72% of total phosphorous (TP) removal (by adsorption mechanisms). Based on empirical modelling, an influent TP 2-6 mg l ˇ1 PTHF would be expected to be economical for small communities (
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innovative production treatment hydroponic farm for primary municipal sewage utilisation
Water Research, 2000Co-Authors: Abdellah A. Rababah, Nicholas J. AshboltAbstract:Abstract The objectives of this work were to investigate a conceptual layout for an inexpensive and simple system that would treat primary municipal wastewater to discharge standards. Furthermore, the system may provide an increased supply of safe water for irrigation with low operational costs and produce commercially valuable plants for small communities in arid and semi-arid areas. A commercial hydroponic system was adapted for this study and consisted of five gullies, 3 m long by 100 mm wide. Primary treated effluent was used to irrigate lettuce in one series and a commercial nutrient solution was used to irrigate the same type of lettuce in another series as a control, both by nutrient film technique (NFT). Nutrient and suspended solids were efficiently removed by the NFT plant system. While no uptake of F-RNA bacteriophages were detected within lettuce leaves, uptake was apparent from spiked virus-sized particles (fluorescent 0.1 μ m microspheres) and equivocal from spores of the Faecal Bacterium, Clostridium perfringens . Microbial data was used in a β-Poisson dose response model and indicated that the probability of infection for a single ingestion event of NFT grown lettuce grown on primary treated municipal effluent was about 1.7% for viruses. Moreover, plants accumulated heavy metals in leaf tissues at concentrations higher than the maximum recommended levels for Australian and New Zealand food (As=6.5, Cd=3.8, Pb=20 mg kg −1 ). Hence, it is recommended to evaluate ornamental or non-edible crops, such as essential oils, pyrethrum or flowers for sewage treatment. A conceptual layout for a full-scale production treatment hydroponic farm (PTHF) for small communities was based on modelling phosphorus removal with the hydroponic NFT experimental pilot plant. With NFT culture of lettuces, roots and other surfaces accounted for 67–72% of total phosphorous (TP) removal (by adsorption mechanisms). Based on empirical modelling, an influent TP 2–6 mg l −1 PTHF would be expected to be economical for small communities ( −1 , SS −1 and BOD −1 . Lower values would be expected if the effluent was polished through a humus filter.
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innovative production treatment hydroponic farm for primary municipal sewage
2000Co-Authors: Abdellah A. Rababah, Nicholas J. AshboltAbstract:The objectives of this work were to investigate a conceptual layout for an inexpensive and simple system that would treat primary municipal wastewater to discharge standards. Furthermore, the system may provide an increased supply of safe water for irrigation with low operational costs and produce commercially valuable plants for small communities in arid and semi-arid areas. A commercial hydroponic system was adapted for this study and consisted of five gullies, 3 m long by 100 mm wide. Primary treated eCuent was used to irrigate lettuce in one series and a commercial nutrient solution was used to irrigate the same type of lettuce in another series as a control, both by nutrient film technique (NFT). Nutrient and suspended solids were eAciently removed by the NFT plant system. While no uptake of F-RNA bacteriophages were detected within lettuce leaves, uptake was apparent from spiked virus-sized particles (fluorescent 0.1 mm microspheres) and equivocal from spores of the Faecal Bacterium, Clostridium perfringens. Microbial data was used in a b-Poisson dose response model and indicated that the probability of infection for a single ingestion event of NFT grown lettuce grown on primary treated municipal eCuent was about 1.7% for viruses. Moreover, plants accumulated heavy metals in leaf tissues at concentrations higher than the maximum recommended levels for Australian and New Zealand food (As=6.5, Cd=3.8, Pb=20 mg kg ˇ1 ). Hence, it is recommended to evaluate ornamental or non-edible crops, such as essential oils, pyrethrum or flowers for sewage treatment. A conceptual layout for a full-scale production treatment hydroponic farm (PTHF) for small communities was based on modelling phosphorus removal with the hydroponic NFT experimental pilot plant. With NFT culture of lettuces, roots and other surfaces accounted for 67-72% of total phosphorous (TP) removal (by adsorption mechanisms). Based on empirical modelling, an influent TP 2-6 mg l ˇ1 PTHF would be expected to be economical for small communities (<400 people) and produce eCuent with TP <0.15 mg l ˇ1 , SS <2.5 mg l ˇ1 and BOD <55 mg l ˇ1 . Lower values would be expected if the
C King - One of the best experts on this subject based on the ideXlab platform.
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distribution of the human Faecal Bacterium bacteroides fragilis its bacteriophages and their relationship to current sewage pollution indicators in bathing water
Journal of Applied Microbiology, 1998Co-Authors: G Bradley, J Carter, D Gaudie, C KingAbstract:Although several bacteria are currently used as possible indicators of human pathogens in sewage-polluted sea water, they are often viewed as inadequate and especially inadequate as indicators of viral pathogens. This study investigates the distribution of Bacteroides fragilis and closely related Bacteroides spp. and their associated bacteriophages in sea water frequently used for recreational purposes. These organisms may provide a potentially more appropriate indicator. Bacteroides fragilis is one of about 10 species which are loosely placed together in the 'B. fragilis' group. Samples down-current from a sewage outfall were examined for the presence of B. fragilis group organisms and associated bacteriophages. Numbers were correlated with current bacterial and possible viral indicators at these sites. These B. fragilis group isolates were used as hosts to successfully isolate bacteriophages. The host range of these bacteriophages was investigated. It is hoped to expand this study by using these B. fragilis group hosts and their bacteriophages to identify a more suitable, European-wide, indicator of bacterial pathogens which can also be used to detect bacteriophages which are suitable as viral indicators.
G Bradley - One of the best experts on this subject based on the ideXlab platform.
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distribution of the human Faecal Bacterium bacteroides fragilis its bacteriophages and their relationship to current sewage pollution indicators in bathing water
Journal of Applied Microbiology, 1998Co-Authors: G Bradley, J Carter, D Gaudie, C KingAbstract:Although several bacteria are currently used as possible indicators of human pathogens in sewage-polluted sea water, they are often viewed as inadequate and especially inadequate as indicators of viral pathogens. This study investigates the distribution of Bacteroides fragilis and closely related Bacteroides spp. and their associated bacteriophages in sea water frequently used for recreational purposes. These organisms may provide a potentially more appropriate indicator. Bacteroides fragilis is one of about 10 species which are loosely placed together in the 'B. fragilis' group. Samples down-current from a sewage outfall were examined for the presence of B. fragilis group organisms and associated bacteriophages. Numbers were correlated with current bacterial and possible viral indicators at these sites. These B. fragilis group isolates were used as hosts to successfully isolate bacteriophages. The host range of these bacteriophages was investigated. It is hoped to expand this study by using these B. fragilis group hosts and their bacteriophages to identify a more suitable, European-wide, indicator of bacterial pathogens which can also be used to detect bacteriophages which are suitable as viral indicators.
Michael Blaut - One of the best experts on this subject based on the ideXlab platform.
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Reclassification of EuBacterium formicigenerans Holdeman and Moore 1974 as Dorea formicigenerans gen. nov., comb. nov., and description of Dorea longicatena sp. nov., isolated from human faeces.
International Journal of Systematic and Evolutionary Microbiology, 2002Co-Authors: David Taras, Rainer Simmering, Matthew D. Collins, Paul A. Lawson, Michael BlautAbstract:Two strains of a gram-positively staining, obligately anaerobic, non-spore-forming, rod-shaped Bacterium, designated strains 111-13A and 111-35T, were isolated from human faeces. Analysis of the 16S rRNA gene sequences indicated that these strains were members of the Clostridium coccoides rRNA group of organisms. The nearest relatives of the unknown Bacterium were EuBacterium formicigenerans (having a sequence similarity of 94%) and an uncultured Bacterium (similarity > 99%). Characterization studies indicated that the unidentified Faecal Bacterium was biochemically distinct from EuBacterium formicigenerans, members of the Clostridium coccoides group and all other described EuBacterium species. On the basis of the data from these studies, it is proposed that the hitherto unknown rod-shaped Bacterium be designated a species of a novel genus, namely Dorea longicatena gen. nov., sp. nov., and that EuBacterium formicigenerans be transferred to this genus as Dorea formicigenerans gen. nov., comb. nov.
