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By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Life Science Research. According to news reporting from Curitiba, Brazil, by NewsRx journalists, research [...]

By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Science. According to news reporting originating in Bedford Park, Australia, by NewsRx journalists, research stated, [...]

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Hydrology have been published. According to news reporting from Shenyang, People's Republic of China, by NewsRx [...]

By a News Reporter-Staff News Editor at Biotech Week -- Investigators publish new report on Drugs and Therapies. According to news reporting out of Rehovot, Israel, by NewsRx editors, research [...]

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Biochemistry. According to news reporting originating in Sao Caetano do Sul, Brazil, by NewsRx [...]

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Proteins have been published. According to news reporting out of Ibaraki, Japan, by NewsRx editors, [...]

By a News Reporter-Staff News Editor at Life Science Weekly -- A new study on Proteins is now available. According to news originating from Tainan, Taiwan, by NewsRx correspondents, research [...]

By a News Reporter-Staff News Editor at Biotech Week -- Investigators discuss new findings in Environmental Research. According to news reporting out of Caparica, Portugal, by NewsRx editors, research stated, [...]

SDA, WERF Issue Request for Proposals on $370,000+ Research Project WASHINGTON, May 29 /PRNewswire-USNewswire/ -- The Soap and Detergent Association (SDA) wants to better understand the environmental fate and effects [...]

New investigation results, 'Interference by the activated sludge matrix on the analysis of soluble microbial products in wastewater,' are detailed in a study published in Chemosphere. 'The objective of this [...]

Data detailed in 'Optimization of spray drying process for Bacillus thuringiensis fermented wastewater and wastewater sludge' have been presented. According to recent research from Quebec, Canada, 'Response surface methodology was [...]

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of Si02 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of Si02 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077 Jong-Seong Chae, Su-Ah Choi, Young-Hyo Kia, Sae-Cheon Oh, Chang-Kook Ryu, Tae-In [...]

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of SiO2 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of Si02 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of SiO2 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of SiO2 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of SiO2 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077 Jong-Seong Chae, Su-Ah Choi, Young-Hyo Kia, Sae-Cheon Oh, Chang-Kook Ryu, Tae-In [...]

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of SiO2 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077

In South Korea, ocean dumping of organic sludges has been prohibited by the London Convention and by Korean regulations. Therefore, the Government of South Korea has sought an alternative process for the disposal of organic sludges. Recently, the combined fry-drying and melting system has been recognized as an efficient way to utilize the energy content of organic industrial sludge. Three kinds of fry-dried industrial sludges (obtained from industrial sites DG, DJ and GM), which had average heating value of 20,470 kJ/kg and less than 5% water content, were tested. Unlike sewage sludge, industrial sludge contains high concentrations of heavy metals and thus cannot be directly utilized as refuse-derived fuel. The dried sludges were melted in a furnace and then rapidly cooled to form vitrified slags; the vitrification of SiO2 securely encapsulates hazardous heavy metals within the crystalline structure of the slag. To evaluate the hazard of vitrified slag, the heavy metal elution concentration was analyzed. Following vitrification, Hg, Cd, Cr+6, HCN and Pb concentrations were not detectable, whereas Cu concentration decreased from 26.78 mg/L to 0.42 mg/L in DJ sludge, from 27.10 mg/L to 0.13 mg/L in DG and from 49.47 mg/L to 0.047 mg/L in GM sludge., http://www.sciencedirect.com/science/article/pii/S0304389416303077

Fourteen water and sediment samples were collected from the Nakdong River Basin in Korea to evaluate the physico-chemical parameters (pH, dissolved oxygen, chemical oxygen demand, biological oxygen demand, total organic carbon) in water and total heavy metals (Cu, Zn, Pb, Cd, As) in surface sediments. The assessment of physico-chemical parameters indicates that river water and sediments in the study area were strongly impacted by industrial wastewater, irrigational effluents and domestic sewage. The overall average concentrations of metals in sediments were Cu (6.41 mg/kg), Cd (0.11 mg/kg), Pb (4.72 mg/kg), Zn (16.8 mg/kg), As (0.19 mg/kg), and the order of the concentrations was Zn > Cu > Pb > As > Cd. Geo-accumulation index (I geo) indicates that most of samples fall at unpolluted to medium category, while contamination factor values fall at the medium to very high pollution zone. Pollution load index also suggests that all samples fall at progressive pollution sector. Multivariate statistical analysis and pollution index methods were helpful for the classification on the basis of the contamination sources and origin of heavy metals. In conclusion, this study clearly infers the fact that the cause of metal pollution in this region is mainly due to the effluents discharged from factories, agricultural fields and sewers., http://link.springer.com/article/10.1007/s12665-015-4836-2 By S. Y. Chung, S. Venkatramanan, N. Park, T. Ramkumar, S. B. Sujitha, M. P. [...]

Fourteen water and sediment samples were collected from the Nakdong River Basin in Korea to evaluate the physico-chemical parameters (pH, dissolved oxygen, chemical oxygen demand, biological oxygen demand, total organic carbon) in water and total heavy metals (Cu, Zn, Pb, Cd, As) in surface sediments. The assessment of physico-chemical parameters indicates that river water and sediments in the study area were strongly impacted by industrial wastewater, irrigational effluents and domestic sewage. The overall average concentrations of metals in sediments were Cu (6.41 mg/kg), Cd (0.11 mg/kg), Pb (4.72 mg/kg), Zn (16.8 mg/kg), As (0.19 mg/kg), and the order of the concentrations was Zn > Cu > Pb > As > Cd. Geo-accumulation index (I geo) indicates that most of samples fall at unpolluted to medium category, while contamination factor values fall at the medium to very high pollution zone. Pollution load index also suggests that all samples fall at progressive pollution sector. Multivariate statistical analysis and pollution index methods were helpful for the classification on the basis of the contamination sources and origin of heavy metals. In conclusion, this study clearly infers the fact that the cause of metal pollution in this region is mainly due to the effluents discharged from factories, agricultural fields and sewers., http://link.springer.com/article/10.1007/s12665-015-4836-2 By S. Y. Chung, S. Venkatramanan , N. Park, T. Ramkumar, S. B. Sujitha, M. P. [...]

Fourteen water and sediment samples were collected from the Nakdong River Basin in Korea to evaluate the physico-chemical parameters (pH, dissolved oxygen, chemical oxygen demand, biological oxygen demand, total organic carbon) in water and total heavy metals (Cu, Zn, Pb, Cd, As) in surface sediments. The assessment of physico-chemical parameters indicates that river water and sediments in the study area were strongly impacted by industrial wastewater, irrigational effluents and domestic sewage. The overall average concentrations of metals in sediments were Cu (6.41 mg/kg), Cd (0.11 mg/kg), Pb (4.72 mg/kg), Zn (16.8 mg/kg), As (0.19 mg/kg), and the order of the concentrations was Zn > Cu > Pb > As > Cd. Geo-accumulation index (I geo) indicates that most of samples fall at unpolluted to medium category, while contamination factor values fall at the medium to very high pollution zone. Pollution load index also suggests that all samples fall at progressive pollution sector. Multivariate statistical analysis and pollution index methods were helpful for the classification on the basis of the contamination sources and origin of heavy metals. In conclusion, this study clearly infers the fact that the cause of metal pollution in this region is mainly due to the effluents discharged from factories, agricultural fields and sewers., http://link.springer.com/article/10.1007/s12665-015-4836-2 By S. Y. Chung, S. Venkatramanan, N. Park, T. Ramkumar, S. B. Sujitha, M. P. [...]

Fourteen water and sediment samples were collected from the Nakdong River Basin in Korea to evaluate the physico-chemical parameters (pH, dissolved oxygen, chemical oxygen demand, biological oxygen demand, total organic carbon) in water and total heavy metals (Cu, Zn, Pb, Cd, As) in surface sediments. The assessment of physico-chemical parameters indicates that river water and sediments in the study area were strongly impacted by industrial wastewater, irrigational effluents and domestic sewage. The overall average concentrations of metals in sediments were Cu (6.41 mg/kg), Cd (0.11 mg/kg), Pb (4.72 mg/kg), Zn (16.8 mg/kg), As (0.19 mg/kg), and the order of the concentrations was Zn > Cu > Pb > As > Cd. Geo-accumulation index (I geo) indicates that most of samples fall at unpolluted to medium category, while contamination factor values fall at the medium to very high pollution zone. Pollution load index also suggests that all samples fall at progressive pollution sector. Multivariate statistical analysis and pollution index methods were helpful for the classification on the basis of the contamination sources and origin of heavy metals. In conclusion, this study clearly infers the fact that the cause of metal pollution in this region is mainly due to the effluents discharged from factories, agricultural fields and sewers., http://link.springer.com/article/10.1007/s12665-015-4836-2 By S. Y. Chung, S. Venkatramanan , N. Park, T. Ramkumar, S. B. Sujitha, M. P. [...]

In this study, adsorption process performance was assessed using metal oxide nano particles for wastewater treatment containing heavy metals in a laboratory scale reactor. Copper oxide nano-particles were prepared and fully characterized considering their adsorption properties (surface area and pore size distribution) as well as their chemical structure and morphology. The adsorption of heavy metals, including Fe3+ and Cd2+ was studied in batch experiments. Various physico-chemical parameters such as pH, initial metal ion concentration, and adsorbent dosage level and equilibrium contact time were studied. The adsorption of Cd2+ and Fe3+ ions increased with an increase in pH. The optimum solution pH for adsorption of both metals from aqueous solutions was 6. Adsorption was rapid and occurred within the first 20 min for both metals within different solution concentrations (250, 100, 50 and 25 mg/L). The kinetic of Cd2+ and Fe3+ adsorption onto copper oxide nano particles was well fitted by the pseudosecond-order rate equation. The equilibrium adsorption data for Cd2+ was best fitted by the Langmuir adsorption isotherm model, but for Fe3+ adsorption, it was found that Freundlich adsorption isotherm model is the best model to describe it. The selectivity order of the adsorbent is Fe3+>Cd2+. From these results, it can be concluded that the CuO nano particles is a promising adsorbent for the removal of heavy metals from aqueous solutions., http://www.omicsonline.com/open-access/metal-oxide-nanoparticles-as-an-adsorbent-for-removal-of-heavy-metals-2090-4568- [...]

In this study, adsorption process performance was assessed using metal oxide nano particles for wastewater treatment containing heavy metals in a laboratory scale reactor. Copper oxide nano-particles were prepared and fully characterized considering their adsorption properties (surface area and pore size distribution) as well as their chemical structure and morphology. The adsorption of heavy metals, including Fe3+ and Cd2+ was studied in batch experiments. Various physico-chemical parameters such as pH, initial metal ion concentration, and adsorbent dosage level and equilibrium contact time were studied. The adsorption of Cd2+ and Fe3+ ions increased with an increase in pH. The optimum solution pH for adsorption of both metals from aqueous solutions was 6. Adsorption was rapid and occurred within the first 20 min for both metals within different solution concentrations (250, 100, 50 and 25 mg/L). The kinetic of Cd2+ and Fe3+ adsorption onto copper oxide nano particles was well fitted by the pseudosecond-order rate equation. The equilibrium adsorption data for Cd2+ was best fitted by the Langmuir adsorption isotherm model, but for Fe3+ adsorption, it was found that Freundlich adsorption isotherm model is the best model to describe it. The selectivity order of the adsorbent is Fe3+>Cd2+. From these results, it can be concluded that the CuO nano particles is a promising adsorbent for the removal of heavy metals from aqueous solutions., http://www.omicsonline.com/open-access/metal-oxide-nanoparticles-as-an-adsorbent-for-removal-of-heavy-metals-2090-4568- [...]