Приказ основних података о документу
Hemp Fibers: Old Fibers - New Applications
dc.creator | Kostić, Mirjana | |
dc.creator | Vukčević, Marija | |
dc.creator | Pejić, Biljana | |
dc.creator | Kalijadis, Ana | |
dc.date.accessioned | 2021-03-10T12:19:09Z | |
dc.date.available | 2021-03-10T12:19:09Z | |
dc.date.issued | 2014 | |
dc.identifier.isbn | 978-163117274-8 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2581 | |
dc.description.abstract | Hemp (Cannabis sativa) was most likely the first plant cultivated by mankind for its textile use. Currently, the interest in hemp is focused on its use as a raw material for the production of environmentally friendly clothes, technical textiles and composite materials. The increased production of hemp fibers in textile industry brings the considerable amount of waste in the form of short and entangled fibers. The cost of waste disposal can be minimized by recycling the waste in the way of producing useful lowcost products. Following the general trend of finding low-cost and easily available adsorbent, waste short and entangled hemp fibers were utilized as a heavy metal biosorbents. Due to the specific structure and heterogenous chemical composition (cellulose, hemicelluloses, lignin, pectin), short hemp fibers as biosorbent offer an effective way to decrease Pb2+, Cd2+ and Zn2+ ion concentration in wastewaters. The influence of hemp fiber chemical composition on their heavy metal ions sorption potential, were assessed by evaluating the water and metal ions uptake capacities of differently modified hemp fibers. The process of heavy metal ions biosorption on short hemp fibers was clarified by mathematical model development. Proposed mathematical model provides a better insight into phenomena of different ions transport through porous fiber matrices, and possibility of optimization of the complex process of biosorption. This is from great importance in the case of using short hemp fibers as filter material for removing the heavy metal ions from polluted water. Furthermore, there is a growing interest in using different type of waste biomass for production of carbon materials as a sorbents for water purification. From that aspect, short and entangled hemp fibers were used as low-cost precursor for production of carbon materials. Chemical modification of hemp fibers, prior to carbonization, affects the specific surface area, amount of surface oxygen groups and morphology of carbonized hemp fibers. Furthermore, activation of carbonized materials with potassium hydroxide improves sorption properties of carbonized hemp fibers by increasing the specific surface area (up to 2192 m2/g) and amount of surface oxygen groups. Due to the good adsorption properties toward heavy metals and pesticides, carbonized and activated hemp fibers were successfully used as a sorbent for the purification of water polluted with pesticides and heavy metals. Also, activated hemp fiber sorbent used for analyte preconcentration in the solid-phase extraction procedure (SPE) for pesticide analysis in water samples, showed even higher efficiency in pesticides preconcentration than expensive commercial cartridges. Sorption process of heavy metal ions and structural parameters of carbonized hemp fibers were described by upgrading already proposed mathematical model. A good agreement between model prediction and the experimental data indicates that the proposed mathematical model can be used for optimization of heavy metal ions adsorption process by correlating the model parameters to the carbonized hemp fibers performances. | en |
dc.rights | restrictedAccess | |
dc.source | Textiles: History, Properties and Performance and Applications | |
dc.subject | Biosorption | en |
dc.subject | Carbonization and activation | en |
dc.subject | Chemical modification | en |
dc.subject | Hemp fibers | en |
dc.subject | Mathematical modeling | en |
dc.title | Hemp Fibers: Old Fibers - New Applications | en |
dc.type | bookPart | |
dc.rights.license | ARR | |
dc.citation.epage | 446 | |
dc.citation.other | : 399-446 | |
dc.citation.spage | 399 | |
dc.identifier.pmid | ||
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_technorep_2581 | |
dc.identifier.scopus | 2-s2.0-84948959179 | |
dc.type.version | publishedVersion |
Документи
Датотеке | Величина | Формат | Преглед |
---|---|---|---|
Уз овај запис нема датотека. |