The Experts below are selected from a list of 18174 Experts worldwide ranked by ideXlab platform
Teresa J. Bandosz - One of the best experts on this subject based on the ideXlab platform.
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Analysis of sulfamethoxazole and trimethoprim adsorption on sewage sludge and Fish Waste derived adsorbents
Microporous and Mesoporous Materials, 2016Co-Authors: Lilja Nielsen, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste, and mixtures of the two were pyrolized at 650 and 950 °C in order to convert them into stable adsorbents. To test their performance in the removal of pharmaceuticals from water, sulfamethoxazole (SMX) and trimethoprim (TMP) were chosen as model adsorbates. Adsorption isotherms were measured in batch adsorption tests at room temperature. The adsorbents prepared at 950 °C were more effective than those obtained at 650 °C. Even though both pharmaceuticals were adsorbed in the highest amount on the material composed of pyrolized Fish Waste, for TMP removal the composite obtained from 90% sewage sludge and 10% Fish Waste was equally effective. To elucidate the adsorption mechanism, detailed surface analyses by TA-MS, XRD and potentiometric titration were carried out. Favorable surface chemistry seems to be the factor governing the performance of these adsorbents as media for the pharmaceuticals' removal from an aqueous phase. The main adsorption mechanism is based on chelation, acid-base interactions and polar interactions with the inorganic phase.
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adsorption of carbamazepine on sludge Fish Waste derived adsorbents effect of surface chemistry and texture
Chemical Engineering Journal, 2015Co-Authors: Lilja Nielsen, Pengfei Zhang, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste and their homogenized mixtures (90:10, 75:25, or 50:50) were carbonized at two temperatures (650 and 950 °C). The obtained materials were extensively characterized in terms of their chemistry and porosity, and tested as adsorbents of carbamazepine from an aqueous phase. The content of a carbon phase was between 26% and 45% and the main components of an inorganic phase were oxides and salts of such metals as Si, Ca, Al, and Fe. The materials were predominantly mesoporous, with pore sizes larger than 30 A. The high carbonization temperature led to better performing materials. Moreover, for the composites a synergistic effect of the component mixture was observed. An addition of a small amount of the Fish Waste increased the content of the carbon phase. A high carbonization temperature improved the level of carbonization and thus resulted in the favorable dispersion of the polar inorganic phase. While the former increased the adsorption of carbamazepine in the small pores via dispersive interactions, the latter contributed to the specific adsorption in mesopores via complexation and/or acid–base interactions.
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Adsorption of carbamazepine on sludge/Fish Waste derived adsorbents: Effect of surface chemistry and texture
Chemical Engineering Journal, 2015Co-Authors: Lilja Nielsen, Pengfei Zhang, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste and their homogenized mixtures (90:10, 75:25, or 50:50) were carbonized at two temperatures (650 and 950 °C). The obtained materials were extensively characterized in terms of their chemistry and porosity, and tested as adsorbents of carbamazepine from an aqueous phase. The content of a carbon phase was between 26% and 45% and the main components of an inorganic phase were oxides and salts of such metals as Si, Ca, Al, and Fe. The materials were predominantly mesoporous, with pore sizes larger than 30 A. The high carbonization temperature led to better performing materials. Moreover, for the composites a synergistic effect of the component mixture was observed. An addition of a small amount of the Fish Waste increased the content of the carbon phase. A high carbonization temperature improved the level of carbonization and thus resulted in the favorable dispersion of the polar inorganic phase. While the former increased the adsorption of carbamazepine in the small pores via dispersive interactions, the latter contributed to the specific adsorption in mesopores via complexation and/or acid–base interactions.
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municipal Waste conversion to hydrogen sulfide adsorbents investigation of the synergistic effects of sewage sludge Fish Waste mixture
Chemical Engineering Journal, 2014Co-Authors: Rajiv Wallace, Pengfei Zhang, Mykola Seredych, Teresa J. BandoszAbstract:Abstract Mixtures of sewage sludge and Fish Waste of various compositions were prepared and pyrolyzed at 950 °C in an inert atmosphere. On the pyrolyzed samples an activation with CO2 was carried out at 850 °C. The materials were used as H2S adsorbents at ambient conditions. Initial and spent samples were characterized using thermal analysis, XRD, XRF, SEM/EDX, sorption of nitrogen and surface pH measurements. An enhancement in the H2S removal capacity on the composite samples was linked to the synergistic effects of chemical composition. The adsorbents’ surface reactivity was linked to the presence of Na, K, Ca, Mg and Fe in various configurations. Activation had a detrimental effect on the composites’ performance as adsorbents of H2S. The sludge component provides an active iron phase, which is important for hydrogen sulfide oxidation. Potassium and sodium polysulfides and iron sulfite, sulfate, sulfide are the products of reactive adsorption. The strongest synergistic effect was found for the composite with the lowest content of the Fish component. With an increase in the content of the Fish Waste this effect diminishes owing to the reactions of alkaline metals with silica during pyrolysis.
Lilja Nielsen - One of the best experts on this subject based on the ideXlab platform.
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Analysis of sulfamethoxazole and trimethoprim adsorption on sewage sludge and Fish Waste derived adsorbents
Microporous and Mesoporous Materials, 2016Co-Authors: Lilja Nielsen, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste, and mixtures of the two were pyrolized at 650 and 950 °C in order to convert them into stable adsorbents. To test their performance in the removal of pharmaceuticals from water, sulfamethoxazole (SMX) and trimethoprim (TMP) were chosen as model adsorbates. Adsorption isotherms were measured in batch adsorption tests at room temperature. The adsorbents prepared at 950 °C were more effective than those obtained at 650 °C. Even though both pharmaceuticals were adsorbed in the highest amount on the material composed of pyrolized Fish Waste, for TMP removal the composite obtained from 90% sewage sludge and 10% Fish Waste was equally effective. To elucidate the adsorption mechanism, detailed surface analyses by TA-MS, XRD and potentiometric titration were carried out. Favorable surface chemistry seems to be the factor governing the performance of these adsorbents as media for the pharmaceuticals' removal from an aqueous phase. The main adsorption mechanism is based on chelation, acid-base interactions and polar interactions with the inorganic phase.
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adsorption of carbamazepine on sludge Fish Waste derived adsorbents effect of surface chemistry and texture
Chemical Engineering Journal, 2015Co-Authors: Lilja Nielsen, Pengfei Zhang, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste and their homogenized mixtures (90:10, 75:25, or 50:50) were carbonized at two temperatures (650 and 950 °C). The obtained materials were extensively characterized in terms of their chemistry and porosity, and tested as adsorbents of carbamazepine from an aqueous phase. The content of a carbon phase was between 26% and 45% and the main components of an inorganic phase were oxides and salts of such metals as Si, Ca, Al, and Fe. The materials were predominantly mesoporous, with pore sizes larger than 30 A. The high carbonization temperature led to better performing materials. Moreover, for the composites a synergistic effect of the component mixture was observed. An addition of a small amount of the Fish Waste increased the content of the carbon phase. A high carbonization temperature improved the level of carbonization and thus resulted in the favorable dispersion of the polar inorganic phase. While the former increased the adsorption of carbamazepine in the small pores via dispersive interactions, the latter contributed to the specific adsorption in mesopores via complexation and/or acid–base interactions.
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Adsorption of carbamazepine on sludge/Fish Waste derived adsorbents: Effect of surface chemistry and texture
Chemical Engineering Journal, 2015Co-Authors: Lilja Nielsen, Pengfei Zhang, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste and their homogenized mixtures (90:10, 75:25, or 50:50) were carbonized at two temperatures (650 and 950 °C). The obtained materials were extensively characterized in terms of their chemistry and porosity, and tested as adsorbents of carbamazepine from an aqueous phase. The content of a carbon phase was between 26% and 45% and the main components of an inorganic phase were oxides and salts of such metals as Si, Ca, Al, and Fe. The materials were predominantly mesoporous, with pore sizes larger than 30 A. The high carbonization temperature led to better performing materials. Moreover, for the composites a synergistic effect of the component mixture was observed. An addition of a small amount of the Fish Waste increased the content of the carbon phase. A high carbonization temperature improved the level of carbonization and thus resulted in the favorable dispersion of the polar inorganic phase. While the former increased the adsorption of carbamazepine in the small pores via dispersive interactions, the latter contributed to the specific adsorption in mesopores via complexation and/or acid–base interactions.
Pengfei Zhang - One of the best experts on this subject based on the ideXlab platform.
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adsorption of carbamazepine on sludge Fish Waste derived adsorbents effect of surface chemistry and texture
Chemical Engineering Journal, 2015Co-Authors: Lilja Nielsen, Pengfei Zhang, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste and their homogenized mixtures (90:10, 75:25, or 50:50) were carbonized at two temperatures (650 and 950 °C). The obtained materials were extensively characterized in terms of their chemistry and porosity, and tested as adsorbents of carbamazepine from an aqueous phase. The content of a carbon phase was between 26% and 45% and the main components of an inorganic phase were oxides and salts of such metals as Si, Ca, Al, and Fe. The materials were predominantly mesoporous, with pore sizes larger than 30 A. The high carbonization temperature led to better performing materials. Moreover, for the composites a synergistic effect of the component mixture was observed. An addition of a small amount of the Fish Waste increased the content of the carbon phase. A high carbonization temperature improved the level of carbonization and thus resulted in the favorable dispersion of the polar inorganic phase. While the former increased the adsorption of carbamazepine in the small pores via dispersive interactions, the latter contributed to the specific adsorption in mesopores via complexation and/or acid–base interactions.
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Adsorption of carbamazepine on sludge/Fish Waste derived adsorbents: Effect of surface chemistry and texture
Chemical Engineering Journal, 2015Co-Authors: Lilja Nielsen, Pengfei Zhang, Teresa J. BandoszAbstract:Abstract Sewage sludge, Fish Waste and their homogenized mixtures (90:10, 75:25, or 50:50) were carbonized at two temperatures (650 and 950 °C). The obtained materials were extensively characterized in terms of their chemistry and porosity, and tested as adsorbents of carbamazepine from an aqueous phase. The content of a carbon phase was between 26% and 45% and the main components of an inorganic phase were oxides and salts of such metals as Si, Ca, Al, and Fe. The materials were predominantly mesoporous, with pore sizes larger than 30 A. The high carbonization temperature led to better performing materials. Moreover, for the composites a synergistic effect of the component mixture was observed. An addition of a small amount of the Fish Waste increased the content of the carbon phase. A high carbonization temperature improved the level of carbonization and thus resulted in the favorable dispersion of the polar inorganic phase. While the former increased the adsorption of carbamazepine in the small pores via dispersive interactions, the latter contributed to the specific adsorption in mesopores via complexation and/or acid–base interactions.
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municipal Waste conversion to hydrogen sulfide adsorbents investigation of the synergistic effects of sewage sludge Fish Waste mixture
Chemical Engineering Journal, 2014Co-Authors: Rajiv Wallace, Pengfei Zhang, Mykola Seredych, Teresa J. BandoszAbstract:Abstract Mixtures of sewage sludge and Fish Waste of various compositions were prepared and pyrolyzed at 950 °C in an inert atmosphere. On the pyrolyzed samples an activation with CO2 was carried out at 850 °C. The materials were used as H2S adsorbents at ambient conditions. Initial and spent samples were characterized using thermal analysis, XRD, XRF, SEM/EDX, sorption of nitrogen and surface pH measurements. An enhancement in the H2S removal capacity on the composite samples was linked to the synergistic effects of chemical composition. The adsorbents’ surface reactivity was linked to the presence of Na, K, Ca, Mg and Fe in various configurations. Activation had a detrimental effect on the composites’ performance as adsorbents of H2S. The sludge component provides an active iron phase, which is important for hydrogen sulfide oxidation. Potassium and sodium polysulfides and iron sulfite, sulfate, sulfide are the products of reactive adsorption. The strongest synergistic effect was found for the composite with the lowest content of the Fish component. With an increase in the content of the Fish Waste this effect diminishes owing to the reactions of alkaline metals with silica during pyrolysis.
Daniel Araki Ribeiro - One of the best experts on this subject based on the ideXlab platform.
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Physico-chemical characterization and biocompatibility of hydroxyapatite derived from Fish Waste.
Journal of the mechanical behavior of biomedical materials, 2018Co-Authors: Hirochi Yamamura, Victor Hugo Pereira Da Silva, Pedro Luiz Menin Ruiz, Valter Ussui, Dolores Ribeiro Ricci Lazar, Ana Claudia Muniz Renno, Daniel Araki RibeiroAbstract:Abstract The aim of this study was to synthesize hydroxyapatite (HAP) powder from Fish Waste. The powder was characterized through X-ray diffraction, Fourier transform infrared spectroscopy, ion exchange chromatography, scanning electron microscopy and plasma emission spectrometry. The cyto- and genotoxicity was carried out to demonstrate biocompatibility in vivo by means of rat subcutaneous tissue test. The results showed that the visible crystalline nature of typical apatite crystal structure when they were calcined at 800 °C. Infrared spectroscopy analysis showed similar composition to HAP standard with the presence of carbonate ion demonstrated by wave number values of 871 cm−1 and 1420 cm−1 for calcinations at 800 °C. The scanning electronmicrographies depicted the crystal morphology and porous nature with average pore size of ~10 µm. Plasma emission spectrometry and ion exchange chromatography confirmed the presence of Ca and P in the samples. The mean of calcium content was 36.8; Mg was 0.8, Na was 0.7 and K was 0.5. Rat subcutaneous tissue test revealed that HAP presented biocompatibility. Furthermore, the lack of cyto- and genotoxicity in blood, liver, kidney and lung were noticed after 30 days of HAP implantation. Taken together, our results demonstrated that HAP from Fish Waste exhibits a great potential for using as biomaterial since is represents a simple, effective, low-cost process and satisfactory degree of biocompatibility.
Jersson Plácido - One of the best experts on this subject based on the ideXlab platform.
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Biomethane from Fish Waste as a source of renewable energy for artisanal Fishing communities
Sustainable Energy Technologies and Assessments, 2019Co-Authors: L.s. Cadavid-rodríguez, M.a. Vargas-muñoz, Jersson PlácidoAbstract:Abstract The potential of biogas production from Fish Waste as source of renewable energy for Fishermen communities was evaluated. Four different Fish Waste concentrations (1%, 1.5%, 2% and 2.5% total solids (TS)) were digested during 28 days at mesophilic conditions. Biochemical Methane Potential (BMP), volatile fatty acids (VFA) concentration and ammonia concentration were analysed during the experiment. Energy production and economic projections were performed to estimate the number of families that can benefit from the biogas production in Tumaco, Colombia. The 1% TS had the highest BMP (464.5 mL CH4/g VS) and the lowest VFA production (2515 mg/L); in contrast, the 2.5% TS had the highest VFA production (11302 mg/L) and the lowest methane production (206.86 mL CH4/g VS). The treatments with 1.5%, 2% and 2.5% TS exhibited diauxic growth as result of different solubilisation rates in the Fish Waste components. The energetic and economic analyses estimated a yearly energy production of 489 MWh, which can satisfy the electric energy consumption or the cooking energy demand of 230 Fishermen families. The results showed that biogas production from Fish Waste is a viable and sustainable alternative to adequately manage this material and provide renewable energy to Fishermen communities.