The Experts below are selected from a list of 17349 Experts worldwide ranked by ideXlab platform
Yusaku Sakata - One of the best experts on this subject based on the ideXlab platform.
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removal of organic Chlorine Compounds by catalytic dehydrochlorination for the refinement of municipal waste plastic derived oil
Fuel, 2001Co-Authors: N. Lingaiah, Tomoyuki Imai, Akinori Muto, Md. Azhar Uddin, Yusaku SakataAbstract:Municipal waste plastic derived oil was prepared by thermal degradation of municipal waste plastics at 410°C. During the degradation of these waste plastics containing polyvinyl chloride, organic Chlorine Compounds were produced in the oil. The chloroorganic Compounds were dehydrochlorinated by using various catalysts such as iron oxide, iron oxide–carbon composite, ZnO, MgO and Redmud. The catalysts were characterized by N2 adsorption and X-ray diffraction. The iron oxide catalysts were effective in removing the chloroorganic Compounds. MgO and ZnO catalysts were deactivated during the reaction by HCl, which is produced by the dehydrochlorination of chloroorganic Compounds. Iron oxide and its carbon composite were found to be stable in the dehydrochlorination of municipal waste plastic derived oil.
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the effect of red mud on the liquefaction of waste plastics in heavy vacuum gas oil
Energy & Fuels, 2001Co-Authors: Jale Yanik, And Md Azhar Uddin, Yusaku SakataAbstract:The main aim of this study was to investigate the effect of red mud on the decomposition and dechlorination of waste plastics. Thermal and catalytic degradation of a mixture of municipal waste plastics (MWP) and heavy vacuum gas oil (HVGO) into fuel oil was carried out by a one-step and a two-step process. One-step processing was performed at 430 °C by stepwise pyrolysis. Red mud (RM) was used as a dechlorination catalyst. In two-step processing, degradation in the presence and absence of solid acid catalyst (silica−alumina, SA1) was carried out at 430 °C followed by dechlorination in a flow-type fixed-bed reactor at 350 °C over RM. Copyrolysis of MWP with HVGO led to a synergic effect, increasing the liquid yield. TR99300 had a good dechlorination effect in two-step processing, however it was not effective for MWP/HVGO mixture. In both processes, RM was very effective in the sorption of both inorganic and organic Chlorine Compounds. Hydrogen chloride (HCl) formation from the degradation of poly(vinyl chl...
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dechlorination of Chlorine Compounds in poly vinyl chloride mixed plastics derived oil by solid sorbents
Industrial & Engineering Chemistry Research, 1999Co-Authors: Md. Azhar Uddin, Yoshitaka Shiraga, Yusaku Sakata, A Muto, Katsuhide MurataAbstract:The degradation of poly(ethylene) (PE) (8 g)/poly(vinyl chloride) (2 g) at 430 °C, poly(propylene) (PP) (8 g)/PVC (2 g) at 380 °C, and poly(styrene) (PS) (8 g)/PVC (2 g) at 360 °C into fuel oil was carried out in a glass reactor under atmospheric pressure by batch operation. The purpose of this study is to determine the composition of the products of the degradation of PVC mixed plastics and to remove Chlorine Compounds from products with suitable sorbents. The organic Chlorine Compounds were distributed in the boiling point (bp) range of 36−174 °C (equivalent to the bps of n-C6 to n-C10) for PE/PVC and PP/PVC and 36−195 °C for PS/PVC. These Compounds are thought to be produced by the reaction between the hydrogen chloride originating from PVC and the hydrocarbons obtained from the degradation of PE, PP, and PS. The degradation of the PP/PVC mixture was also carried out in the presence of a silica−alumina (SA1) catalyst, which is known as an effective catalyst for the degradation of hydrocarbons, and iron...
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boiling point distributions and dechlorination of organic Chlorine Compounds in oil obtained from the degradation of pvc mixed plastic
Energy & Fuels, 1999Co-Authors: Yoshitaka Shiraga, Akinori Muto, Masashi Narazaki, Md. Azhar Uddin, Yusaku Sakata, Katsuhide MurataAbstract:The thermal and catalytic degradation of mixed plastics containing poly(vinyl chloride) (PVC) was carried out at 360−430 °C under atmospheric pressure by semibatch operation. The boiling-point distributions of organic Chlorine Compounds in the oil obtained from the degradation of mixed plastics PE/PVC, PP/PVC, and PS/PVC were determined by gas chromatography. Organic Chlorine Compounds were distributed in a range of boiling points 36−174 °C, equivalent to the boiling points of normal paraffins n-C6−n-C10. It is suggested that the organic Chlorine Compounds were produced by the reaction of HCl deriving from PVC to the products obtained from the degradation of PE, PP, and PS. Solid acid catalyst (silica−alumina) was effective for the degradation of PVC mixed plastic. Iron oxides were efficient Chlorine sorbents for the dechlorination of degradation products.
Md. Azhar Uddin - One of the best experts on this subject based on the ideXlab platform.
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removal of organic Chlorine Compounds by catalytic dehydrochlorination for the refinement of municipal waste plastic derived oil
Fuel, 2001Co-Authors: N. Lingaiah, Tomoyuki Imai, Akinori Muto, Md. Azhar Uddin, Yusaku SakataAbstract:Municipal waste plastic derived oil was prepared by thermal degradation of municipal waste plastics at 410°C. During the degradation of these waste plastics containing polyvinyl chloride, organic Chlorine Compounds were produced in the oil. The chloroorganic Compounds were dehydrochlorinated by using various catalysts such as iron oxide, iron oxide–carbon composite, ZnO, MgO and Redmud. The catalysts were characterized by N2 adsorption and X-ray diffraction. The iron oxide catalysts were effective in removing the chloroorganic Compounds. MgO and ZnO catalysts were deactivated during the reaction by HCl, which is produced by the dehydrochlorination of chloroorganic Compounds. Iron oxide and its carbon composite were found to be stable in the dehydrochlorination of municipal waste plastic derived oil.
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dechlorination of Chlorine Compounds in poly vinyl chloride mixed plastics derived oil by solid sorbents
Industrial & Engineering Chemistry Research, 1999Co-Authors: Md. Azhar Uddin, Yoshitaka Shiraga, Yusaku Sakata, A Muto, Katsuhide MurataAbstract:The degradation of poly(ethylene) (PE) (8 g)/poly(vinyl chloride) (2 g) at 430 °C, poly(propylene) (PP) (8 g)/PVC (2 g) at 380 °C, and poly(styrene) (PS) (8 g)/PVC (2 g) at 360 °C into fuel oil was carried out in a glass reactor under atmospheric pressure by batch operation. The purpose of this study is to determine the composition of the products of the degradation of PVC mixed plastics and to remove Chlorine Compounds from products with suitable sorbents. The organic Chlorine Compounds were distributed in the boiling point (bp) range of 36−174 °C (equivalent to the bps of n-C6 to n-C10) for PE/PVC and PP/PVC and 36−195 °C for PS/PVC. These Compounds are thought to be produced by the reaction between the hydrogen chloride originating from PVC and the hydrocarbons obtained from the degradation of PE, PP, and PS. The degradation of the PP/PVC mixture was also carried out in the presence of a silica−alumina (SA1) catalyst, which is known as an effective catalyst for the degradation of hydrocarbons, and iron...
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boiling point distributions and dechlorination of organic Chlorine Compounds in oil obtained from the degradation of pvc mixed plastic
Energy & Fuels, 1999Co-Authors: Yoshitaka Shiraga, Akinori Muto, Masashi Narazaki, Md. Azhar Uddin, Yusaku Sakata, Katsuhide MurataAbstract:The thermal and catalytic degradation of mixed plastics containing poly(vinyl chloride) (PVC) was carried out at 360−430 °C under atmospheric pressure by semibatch operation. The boiling-point distributions of organic Chlorine Compounds in the oil obtained from the degradation of mixed plastics PE/PVC, PP/PVC, and PS/PVC were determined by gas chromatography. Organic Chlorine Compounds were distributed in a range of boiling points 36−174 °C, equivalent to the boiling points of normal paraffins n-C6−n-C10. It is suggested that the organic Chlorine Compounds were produced by the reaction of HCl deriving from PVC to the products obtained from the degradation of PE, PP, and PS. Solid acid catalyst (silica−alumina) was effective for the degradation of PVC mixed plastic. Iron oxides were efficient Chlorine sorbents for the dechlorination of degradation products.
F Fernandezmartinez - One of the best experts on this subject based on the ideXlab platform.
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a mixed separation immobilization method for soluble salts removal and stabilization of heavy metals in municipal solid waste incineration fly ash
Journal of Environmental Management, 2019Co-Authors: Evangelina Atanes, Blanca Cuestagarcia, Antonio Nietomarquez, F FernandezmartinezAbstract:This work presents the results of a treatment process of municipal solid waste incineration (MSWI) fly ash using a solution of sodium carbonate as a stabilizing agent. The effectiveness of the treatment was evaluated by means of leaching test for waste characterization according to European Standard, with special focus on soluble chlorides and heavy metals (Zn, Cd, Pb and Cu). Chemical, XRD and DTA/DTG analysis were used to gain insight into the chemical changes induced in the fly ash by the treatment. In the fresh fly ash, the total dissolved solids and chloride concentration exceed the acceptance limits for hazardous waste whereas fresh fly ash was classified as hazardous waste concerning Pb. The carbonated fly ash was considered as non-hazardous waste according to all studied parameters. XRD and DTA/DTG analysis of treated fly ash showed that Chlorine Compounds have been transferred into the liquid phase during the stabilization process. The chloride removal from the ash was complete and fast irrespective of the sodium carbonate concentration and solid/liquid ratio in the stabilization process within the range studied. The treated fly ash was mainly composed by calcite and portlandite and the chemical analysis after the leaching test demonstrated that more than 98% of heavy metals remained in the treated fly ash. Therefore, the stabilization procedure of MSWI fly ash with a solution of carbonate ions achieved the separation of soluble salts and the leaching stabilization of heavy metals simultaneously in one step.
Xingdong Wang - One of the best experts on this subject based on the ideXlab platform.
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research on synergistically hydrothermal treatment of municipal solid waste incineration fly ash and sewage sludge
Waste Management, 2019Co-Authors: Zhan Chen, Yin Wang, X L Liu, Xingdong WangAbstract:Abstract To explore a feasible method of utilizing municipal solid waste incineration fly ash (IFA) rather than releasing it into solidified landfill, in this work, IFA was pretreated by mixing it with municipal sewage sludge (MSS) and applying hydrothermal treatment (HTT). The influences of the IFA dosage, HTT temperature, HTT time, and liquid to solid ratio (L/S) on the dewatering, Chlorine migration, solidification, and leaching of heavy metals (HMs) in MSS were investigated. The results show that the synergistic effect was obtained, IFA enhanced the dewatering of MSS and in return, MSS improved the release of Chlorine in IFA. The optimal pretreatment conditions were an IFA dosage of 5%, HTT temperature of 180 °C and HTT time of 60 min. The moisture of the solid residue after HTT could be controlled below 40%. Under a fixed IFA dosage, the Chlorine content of the liquid could be reached almost 50% with increasing HTT temperature, and the Chlorine distribution exhibited a strong positive correlation with the L/S ratio (R2 > 0.90). The migrating Chlorine was mainly derived from its soluble state, which was controlled by the HTT liquid volume. After the soluble Chlorine was dissolved, bound Chlorine Compounds, such as CaCl(OH), gradually neutralized and released Chlorine into the liquid during HTT, and finally reached an equilibrium as the L/S ratio continued to increase. In addition, during HTT, satisfactory HM immobilization performance was achieved and the fraction of HMs, such as Cr, Ni, Cu and Zn, stabilized.
Katsuhide Murata - One of the best experts on this subject based on the ideXlab platform.
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dechlorination of Chlorine Compounds in poly vinyl chloride mixed plastics derived oil by solid sorbents
Industrial & Engineering Chemistry Research, 1999Co-Authors: Md. Azhar Uddin, Yoshitaka Shiraga, Yusaku Sakata, A Muto, Katsuhide MurataAbstract:The degradation of poly(ethylene) (PE) (8 g)/poly(vinyl chloride) (2 g) at 430 °C, poly(propylene) (PP) (8 g)/PVC (2 g) at 380 °C, and poly(styrene) (PS) (8 g)/PVC (2 g) at 360 °C into fuel oil was carried out in a glass reactor under atmospheric pressure by batch operation. The purpose of this study is to determine the composition of the products of the degradation of PVC mixed plastics and to remove Chlorine Compounds from products with suitable sorbents. The organic Chlorine Compounds were distributed in the boiling point (bp) range of 36−174 °C (equivalent to the bps of n-C6 to n-C10) for PE/PVC and PP/PVC and 36−195 °C for PS/PVC. These Compounds are thought to be produced by the reaction between the hydrogen chloride originating from PVC and the hydrocarbons obtained from the degradation of PE, PP, and PS. The degradation of the PP/PVC mixture was also carried out in the presence of a silica−alumina (SA1) catalyst, which is known as an effective catalyst for the degradation of hydrocarbons, and iron...
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boiling point distributions and dechlorination of organic Chlorine Compounds in oil obtained from the degradation of pvc mixed plastic
Energy & Fuels, 1999Co-Authors: Yoshitaka Shiraga, Akinori Muto, Masashi Narazaki, Md. Azhar Uddin, Yusaku Sakata, Katsuhide MurataAbstract:The thermal and catalytic degradation of mixed plastics containing poly(vinyl chloride) (PVC) was carried out at 360−430 °C under atmospheric pressure by semibatch operation. The boiling-point distributions of organic Chlorine Compounds in the oil obtained from the degradation of mixed plastics PE/PVC, PP/PVC, and PS/PVC were determined by gas chromatography. Organic Chlorine Compounds were distributed in a range of boiling points 36−174 °C, equivalent to the boiling points of normal paraffins n-C6−n-C10. It is suggested that the organic Chlorine Compounds were produced by the reaction of HCl deriving from PVC to the products obtained from the degradation of PE, PP, and PS. Solid acid catalyst (silica−alumina) was effective for the degradation of PVC mixed plastic. Iron oxides were efficient Chlorine sorbents for the dechlorination of degradation products.