نتایج جستجو برای: carbonaceous adsorbents

تعداد نتایج: 8352  

Journal: :Agronomy 2022

Massive biomass waste with lignocellulose components can be used to produce biochar for environmental remediation. However, the impact of pyrolysis on structure in relation sorption mechanism ionizable antibiotics is still poorly understood. In this paper, diverse techniques including thermogravimetric analysis and 13C nuclear magnetic resonance were applied investigate properties biochars as a...

2009
Josef Houser Jan Růžička Marie Dvořáčková

The adsorption of Bis (2-ethylhexyl) phthalate (DEHP) on the carbon adsorbents (Chezacarb S and Chezacarb SH) and polymer adsorbent on basis of polypropylene with polyethylene (Reo Fb) was studied. Efficiency of DEHP adsorption (concentration DEHP to 10 g.L, concentration of the adsorbents 1.7 g.L) was more then 99.9 %. By the sample from groundwater was efficiency more as 99.7 % in the case of...

Journal: :Journal of Molecular Liquids 2022

The removal of ionisable drugs (fluoxetine, sulfamethizole and antipyrine) from aqueous solution was performed by conventional adsorption using carbonaceous aerogel pellets as adsorbents. Although >96 % elimination achieved for antipyrine after 1440 min, only 2.5 fluoxetine removed. In a multicomponent system, the presence these three in leads to fivefold depletion adsorbed total mass. Thus, au...

Journal: :Journal of composites science 2023

Environmental pollution by arsenic (As) and hexavalent chromium (Cr(VI)) has been one of the most serious environmental problems in recent years around world. Their presence water is a result both natural anthropogenic activities, poses risks to human health due their high toxicity. Adsorption leading method used remove chromium, with biochar, carbonaceous pyrolytic product made from various ty...

Journal: :Astrobiology 2014
Lauren M White Everett K Gibson Kathie L Thomas-Keprta Simon J Clemett David S McKay

We report the first observation of indigenous carbonaceous matter in the martian meteorite Yamato 000593. The carbonaceous phases are heterogeneously distributed within secondary iddingsite alteration veins and present in a range of morphologies including areas composed of carbon-rich spheroidal assemblages encased in multiple layers of iddingsite. We also observed microtubular features emanati...

2009
E. Dobrică C. Engrand H. Leroux J. Duprat

Introduction: UltraCarbonaceous Antarctic Micrometeorites (UCAMM) are a new type of fluffy, fragile particles, exceptionally rich in carbon. The samples were collected at Dome C near CONCORDIA station, in central Antarctica [1]. These particles are dominated by a very large amount of carbonaceous material, with concentrations up to ~ 50 wt%, even larger than that of anhydrous IDPs [2]. They are...

2005
Xiaohong Liu Joyce E. Penner Michael Herzog

[1] The IMPACT global chemistry and transport model has been updated to include an aerosol dynamics module. Here it is used to simulate the dynamics of sulfate aerosol and its interaction with nonsulfate aerosol components: carbonaceous aerosol (organic matter (OM) and black carbon (BC)), dust, and sea salt. The sulfate aerosol dynamics is based on the method of modes and moments. In the curren...

2016
Luca Rotelli Josep M. Trigo-Rodríguez Carles E. Moyano-Cambero Eleonora Carota Lorenzo Botta Ernesto Di Mauro Raffaele Saladino

We show that carbonaceous chondrite meteorites actively and selectively catalyze the formation of relevant prebiotic molecules from formamide in aqueous media. Specific catalytic behaviours are observed, depending on the origin and composition of the chondrites and on the type of water present in the system (activity: thermal > seawater > pure). We report the one-pot synthesis of all the natura...

2017
Sophia Karastogianni Eleni A. Deliyanni Stella Girousi

The data reported in literature demonstrate that carbon paste electrodes (CPEs) are very suitable for a variety of applications and many works have thus been devoted in the development of new sensitive and selective electrode surfaces based on carbon paste as the electrode material of choice. The application of novel and promising carbonaceous materials, as electrode surfaces, is an issue of gr...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2011
Masayo Sakata Kana Yoshimura Itsumi Sakamoto Masami Todokoro Masashi Kunitake

The removal of lipopolysaccharide (LPS) from a contaminated DNA solution was achieved using cross-linked cyclodextrin (CyD polymer) beads as LPS adsorbents. The LPS-removing activity of the β- and γ-CyD polymer beads was compared with that of common cationic LPS adsorbents. The γ-CyD polymer beads selectively removed LPS from a DNA solution (50 µg mL(-1), pH 6, ionic strength μ = 0.2) containin...

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