Preparation of PVC pitch from waste pipe

Qiao, Wen; Song, Yue; Yoon, Seong‐Ho; Korai, Yozo; Mochida, Isao; Katou, Osamu

doi:10.1016/j.carbon.2005.02.032

Cited by 9 publications

(8 citation statements)

References 5 publications

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“…Oxidizing redox reaction with the surrounding carbon atoms at high temperatures and it causes the loss of the surrounding carbon atoms to reach the purpose of enlarging the pores or metal ions themselves have a good ability to adsorb a particular substance. Qiao [40] were tested with Fe (NO3) 3 and Fe 2 (SO 4 ) 3 for activated carbon. The results show that at high temperature, the reaction of NOx and SOx to the pore channel of activated carbon is released by the decomposition of metal salt, and the pore size is increased.…”

Section: Load Metal Modification Methodsmentioning

confidence: 99%

Research progress on modification of activated carbon

Liu

Xiao

2018

E3S Web Conf.

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Abstract.The paper overall the way and principle of how to modify activated carbon at home and abroad. Besides, the characteristics was given on physical, chemical modification respectively. The physical modification generally changed internal and external structure of the activated carbon, while chemical modification changed both its structure and surface properties. The advantages，disadvantages and the mechanism of the modifiers mentioned above are discussed，and their application are also prospected.

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Section: Load Metal Modification Methodsmentioning

confidence: 99%

Research progress on modification of activated carbon

Liu

Xiao

2018

E3S Web Conf.

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“…In contrast, MgO and CaO are more easily removed by acidic extraction. 49 Another possible template is a transition metal oxide which can be removed by extraction and vaporization from the carbon. Its reduction by carbon wall gasifies the carbon to modify the pore during the carbonization.…”

Section: Catalytic Activation Of Carbonsmentioning

confidence: 99%

Catalysts in syntheses of carbon and carbon precursors

Mochida¹,

Yoon²,

Qiao³

2006

J. Braz. Chem. Soc.

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Materiais de carbono têm sido aplicados em diferentes campos, devido ao seu desempenho e aplicação únicos. Naturalmente, as estruturas físicas e químicas dos precursores de carbono e materiais de carbono definem as suas propriedades e aplicações. Os catalisadores apresentam um papel importante na síntese de precursores de carbono e materiais de carbono, por controlar a química composicional e molecular na transformação de substratos orgânicos em carbono, através de intermediários carbonáceos. Um desempenho maior dos materiais de carbono pode ser obtido, a custos mais baixos, através da seleção cuidadosa de catalisadores e processos catalíticos adequados na síntese de fontes de carbono, na carbonização, ativação, grafitização, modificação de precursores de carbono e no crescimento destes materiais de carbono.Carbon materials have been applied in different fields because of their unique performances. Naturally, the physical and chemical structures of carbon precursors and carbon materials decide their properties and applications. Catalysts play a very important role in the synthesis of carbon precursors and carbon materials by controlling the molecular and compositional chemistry at the transformation of organic substrates into carbon through carbonaceous intermediates. Carbon materials of high performance and low production cost can be realized, through carefully selecting suitable catalysts and catalytic processes in the synthesis of carbon feed, carbonization, activation, graphitization, and modification of carbon precursors, and carbon growth.

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“…So to produce a better product, separation of the PVC polymer and its additive material is needed. 4,9 Nanofiber membranes have high porosity and interconnected and tortuous pore structures, providing high selectivity and permeability in water filtration. 10,11 Chen et al (2022) reported that the PAN/TPU nanofiber membrane had a retention efficiency of up to 99.99% for 100 nm of SiO 2 suspension with a high pure water flux of ∼8490 L m −2 h −1 .…”

Section: ■ Introductionmentioning

confidence: 99%

Electrospun Nanofibers from Waste Polyvinyl Chloride Loaded Silver and Titanium Dioxide for Water Treatment Applications

Zulfi,

Hartati,

Nur’aini

et al. 2023

ACS Omega

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The electrospun nanofiber membrane from polyvinyl chloride (PVC) waste for water treatment applications has been successfully produced. The PVC precursor solution was prepared by dissolving the PVC waste in DMAc solvent, and a centrifuge was used to separate undissolved materials from the precursor solution. Ag and TiO2 were added to the precursor solution before the electrospinning process. We studied the fabricated PVC membranes using SEM, EDS, XRF, XRD, and FTIR to study the fiber and membrane properties. The SEM images depicted that Ag and TiO2 addition has changed the morphology and size of fibers. The EDS images and XRF spectra confirmed the presence of Ag and TiO2 on the nanofiber membrane. The XRD spectra showed the amorphous structure of all membranes. The FTIR result indicated that the solvent completely evaporated throughout the spinning process. The fabricated PVC@Ag/TiO2 nanofiber membrane showed the photocatalytic degradation of dyes under visible light. The filtration test on the membrane PVC and PVC@Ag/TiO2 depicted that the presence of Ag and TiO2 affected the flux and separation factor of the membrane.

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Preparation of PVC pitch from waste pipe

Cited by 9 publications

References 5 publications

Research progress on modification of activated carbon

Research progress on modification of activated carbon

Catalysts in syntheses of carbon and carbon precursors

Electrospun Nanofibers from Waste Polyvinyl Chloride Loaded Silver and Titanium Dioxide for Water Treatment Applications

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