Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Barbara Charmas"'
Publikováno v:
Journal of Ecological Engineering, Vol 25, Iss 9, Pp 92-100 (2024)
This study aimed to determine the quantity and quality of dissolved organic carbon (DOC) released from sewage sludge-derived biochar and digestion-derived biochar under different extraction conditions (deionised water, hot water, 0.1 mol/L NaOH) usin
Externí odkaz:
https://doaj.org/article/8d6b6a9ea77e4fb3bfaa22c32363c808
Autor:
Katarzyna Jedynak, Barbara Charmas
Publikováno v:
Materials, Vol 17, Iss 3, p 748 (2024)
Plastic waste disposal is a major environmental problem worldwide. One recycling method for polymeric materials is their conversion into carbon materials. Therefore, a process of obtaining activated carbons through the carbonization of waste CDs (as
Externí odkaz:
https://doaj.org/article/2fe8e4f3cb614f219c22b31505ce584b
Publikováno v:
Molecules, Vol 28, Iss 13, p 4922 (2023)
In the presented research, activated carbons from wheat bran were obtained as a result of pyrolysis and physical activation (CO2 or/and steam). In addition, the obtained materials were subjected to additional modification with superheated steam using
Externí odkaz:
https://doaj.org/article/1c3950054f0c43768b503662156a95b1
Autor:
Eugeny Filippovich Voronin, Liudmyla Viktorivna Nosach, Volodymyr Musijovuch Gun’ko, Barbara Charmas
Publikováno v:
Фізика і хімія твердого тіла, Vol 20, Iss 1, Pp 22-26 (2019)
Methods of geometric and solvate-stymulated mechano-sorption-activated modification of fumed nanosilica in the gaseous dispersion media were developed and used to prepare functionalyzed nanofillers for polymeric systems. Non-volatile high- and low-mo
Externí odkaz:
https://doaj.org/article/67d58ba02f884484be943ef54618d3c1
Autor:
Josef Bartoš, Bożena Zgardzińska, Helena Švajdlenková, Barbara Charmas, Miroslava Lukešová, Konrad Wysogląd, Magdalena Goździuk
Publikováno v:
Materials, Vol 15, Iss 2, p 462 (2022)
A combined study of one of the simplest aromatic hydrocarbons, i.e., methylbenzene (toluene) (TOL), via the annihilation of an ortho-positronium (o-Ps) probe via positron annihilation lifetime spectroscopy (PALS) and the rotation dynamics of nitroxid
Externí odkaz:
https://doaj.org/article/2bd7fca67cd84218855977db6faf210f
Autor:
Katarzyna Jedynak, Barbara Charmas
Publikováno v:
Materials, Vol 14, Iss 14, p 3859 (2021)
In this study the pyrolysis of Norway spruce cones, a lignocellulosic biomass was made. The biochar product was obtained by means of the physical activation method. CO2 was used as the activating gas. The surface properties of biochars were character
Externí odkaz:
https://doaj.org/article/b762ac25c2994d4598347891ed2588fc
Autor:
Magdalena Blachnio, Anna Derylo-Marczewska, Barbara Charmas, Malgorzata Zienkiewicz-Strzalka, Viktor Bogatyrov, Mariia Galaburda
Publikováno v:
Molecules, Vol 25, Iss 21, p 5105 (2020)
Agricultural waste materials (strawberry seeds and pistachio shells) were used for preparation of activated carbons by two various methods. Chemical activation using acetic acid and physical activation with gaseous agents (carbon dioxide and water va
Externí odkaz:
https://doaj.org/article/a4dc574b2e2f4a6faee14cfcaf67b1c9
Autor:
Barbara Charmas, Karolina Kucio, Volodymyr Sydorchuk, Svitlana Khalameida, Magdalena Zięzio, Aldona Nowicka
Publikováno v:
Colloids and Interfaces, Vol 3, Iss 1, p 6 (2018)
The formation of hierarchical, multimodal porosity materials with controlled shape and size of pores is the essential challenge in materials science. Properties of silica materials depend largely on different features: crystal structure, dispersity,
Externí odkaz:
https://doaj.org/article/207f5cba98a7474abaa340af9b8ca800
Autor:
Barbara Charmas
Publikováno v:
Adsorption Science & Technology, Vol 33 (2015)
This paper presents the studies of effects of different Ni 2+ contents on the structural and thermal properties of carbosils prepared by deposition of carbon matter (starch gelation) on the silica gel (Si-50) matrix. These mesoporous materials were c
Externí odkaz:
https://doaj.org/article/67a360c0ea9b41ffb211ec49a48f08f5
Autor:
Vladimir M. Gun'ko, Vladimir V. Turov, Viktor M. Bogatyrov, Jadwiga Skubiszewska-Zięba, Barbara Charmas
Publikováno v:
Adsorption Science & Technology, Vol 32 (2014)
Resorcinol–formaldehyde resin (RFR) was synthesized as a porous material characterized by specific surface area of 140 m 2 /g and pore volume of 0.59 cm 3 /g with major proportions of broad mesopores and macropores. The interfacial behavior of wate
Externí odkaz:
https://doaj.org/article/ec39bc89167744adb721442ec1ecc439