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Wyszukujesz frazę "Wang, Qian" wg kryterium: Autor


Tytuł:
Eliminating the adverse effect of the lime on the gold-bearing pyrrhotite flotation using the isopentyl xanthate as collector at low alkalinity
Autorzy:
Yang, Wei
Wang, Qian
Wang, Yaping
Dong, Ping
Powiązania:
https://bibliotekanauki.pl/articles/110148.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
pyrrhotite
flotation
pH regulator
collector
Opis:
Flotation optimal conditions and mechanism of regulator lime, isopentyl xanthate and butyl xanthate on pyrrhotite were investigated by flotation test, contact angle, zeta potential and infrared spectroscopic analysis. It is found that there is a certain relationship between the regulator lime and the collector isopentyl xanthate. The results of flotation indicate that lime can indeed inhibit pyrrhotite, and isopentyl xanthate can decrease the depression effect of lime on pyrrhotite in low alkalinity. The results of adsorption mechanism of lime and isopentyl xanthate show that after lime adsorbed on the pyrrhotite surface, Ca 2+inhibit the adsorption of collector with the form of Ca(OH) 2 precipitates. Compared with butyl xanthate, isopentyl xanthate could reduce the generation of hydrophilic Ca(OH) 2 and generate less hydrophilic CaCO3 as well to decrease the negative effect of gold-bearing pyrrhotite flotation depressed by lime.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 5; 1250-1258
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation study on the structural optimization of composite insulators based on contaminant deposition
Autorzy:
Lv, Yukun
Chen, Zeze
Wang, Qian
Lu, Yao
Li, Xiaojing
Powiązania:
https://bibliotekanauki.pl/articles/27309958.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
composite insulator
contaminant deposition characteristics
numerical simulation
voltage type
structural optimization
Opis:
Optimizing the aerodynamic structure of composite insulators can guarantee the safe operation of power systems. In this study, we construct a simulation model for composite insulator contaminant deposition using the COMSOL simulation software, and the rationality of the simulation model and method is verified through wind tunnel experiments. Taking the FXBW4-110/100 composite insulator as an example, we adopt a progressive optimization plan to explore the impacts of shed spacing s, and shed inclination angles α and β on its contaminant deposition characteristics under DC and AC voltages. Based on the numerical simulation results, we analyze the antifouling performance of insulators before and after structural optimization. The results indicate the following: 1) The contaminant deposition of the insulator under AC and DC voltages is negatively correlated with the shed spacing s, but positively correlated with the lower inclination angle β. 2) Under AC voltages, the contaminant deposition of the insulator increases with the upper inclination angle α, while under DC voltages, the contaminant deposition shows an uptrend first, then a downtrend and then an uptrend again with the increase of the upper inclination angle α. 3) Compared with the original model, the AC-optimized model ( α = 6°, β = 2° and s = 98 mm) with a larger shed spacing s, and smaller shed inclination angles α and β showed superior antifouling performance at wind speeds of no less than 2 m/s, and under the typical conditions ( v = 2.5 m/s, d = 20 μm, and ρ = 2 200 kg/m 3), its contaminant deposition is 15% less than that of the original model ( α = 10°, β = 2° and s = 80 mm).
Źródło:
Archives of Electrical Engineering; 2023, 72, 4; 1089--1105
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Boundedness of singular integral operators with holomorphic kernels on star-shaped closed Lipschitz curves
Autorzy:
Gaudry, Garth
Qian, Tao
Wang, Silei
Powiązania:
https://bibliotekanauki.pl/articles/966841.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
The aim of this paper is to study singular integrals T generated by holomorphic kernels defined on a natural neighbourhood of the set ${zζ^{-1}: z, ζ ∈ , z ≠ ζ}$, where is a star-shaped Lipschitz curve, $ ={ exp(iz) : z = x+iA(x), A' ∈ L^{∞}[-π,π], A(-π ) =A(π)}$. Under suitable conditions on F and z, the operators are given by (1) $TF(z)= p.v. ∫_ (zη^{-1})F(η)(dη/η).$ We identify a class of kernels of the stated type that give rise to bounded operators on $L^{2} (,|d|)$. We establish also transference results relating the boundedness of kernels on closed Lipschitz curves to corresponding results on periodic, unbounded curves.
Źródło:
Colloquium Mathematicum; 1996, 70, 1; 133-150
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stepper motor open-loop control system modeling and control strategy optimization
Autorzy:
Zhang, Deode
Wang, Jingqi
Qian, Lei
Yi, Jun
Powiązania:
https://bibliotekanauki.pl/articles/141113.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
acceleration and deceleration control
open loop control
stepper motor
subdivision control
system modeling
Opis:
The study of the subdivision driving technology of a stepper motor and two types of typical acceleration and deceleration curves aims at optimizing the open-loop control performance of the stepper motor. The simulation model of a two-phase hybrid stepper motor open-loop control system is set up based on the mathematical model of the stepper motor, in order to let the stepper motor have the smaller stepper angle, two types of typical acceleration and a deceleration curve algorithm are designed for the real- time online calculation based on the subdivision driving technology. It respectively carries out the simulation analysis for their control effects. The simulation results show that the parabolic acceleration and deceleration curves have a larger maximum in-step rotation angle and the faster dynamic response ability in the same control period, and at the same time, the position tracking error of an intermediate process is smaller.
Źródło:
Archives of Electrical Engineering; 2019, 68, 1; 63-75
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and Performance Optimization of Organosilicon Slag Exothermic Insulating Riser
Autorzy:
Lu, Jijun
Qian, Jiangbing
Yang, Lei
Wang, Huafang
Powiązania:
https://bibliotekanauki.pl/articles/27314121.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
organosilicon slag
exothermic insulation
optimization
żużel krzemoorganiczny
izolacje
optymalizacja
Opis:
The exothermic insulating riser played an important role in the solidification process of metal liquid for the improvement of casting quality. This paper focused on the use of organosilicon slag to replace part of the aluminum powder as an exothermic agent for the riser, to reduce production costs and turn waste into treasure. The experiments firstly studied the effect of organosilicon slag content on the combustion temperature and holding time and determined the components of the riser exothermic agent and organosilicon slag. On this basis, the effects of the content of Na3AlF6 flux and alkali phenolic resin binder on the combustion heating time and strength properties of the riser were studied. And the ratio of mixed oxidants was determined by single-factor orthogonal experiments to optimize the addition of three oxidants, Fe3O4, MnO2, and KNO3. Finally, the performance of the riser prepared after optimization was compared with that of the riser prepared with general aluminum powder. The results showed that with the mixture of 21% organosilicon slag and 14% aluminum powder as the exothermic agent, the highest combustion temperature of the prepared exothermic insulating riser was 1451℃ and the holding time was 193 s; the optimal content of Na3AlF6 flux was 4%, and the best addition alkali phenolic resin binder was 12%; the optimized mixing ratio of three oxidants was 12% for Fe3O4, 6% for MnO2, and 6% for KNO3. Under the optimized ratio, the maximum combustion temperature of the homemade riser was 52℃ and the heat preservation time was 14% longer compared with the conventional exothermic insulating riser with 25-35% aluminum powder.
Źródło:
Archives of Foundry Engineering; 2023, 23, 1; 75--82
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A model of degree of scattering polarization for oil spilling
Autorzy:
Wang, Xiao
Xu, Jiang
Qian, Weixian
Ouyang, Jingyi
Powiązania:
https://bibliotekanauki.pl/articles/1835805.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
optical mechanism
surface microstructure
degree of scattering polarization
Fresnel formula
oil slick
Opis:
Oil slicks often show uncertain surface roughness and Fresnel reflection parameters. Consequently, differentiating oil spilled on the seawater in these areas using optical sensors is a challenge. Therefore, the optical mechanism of the oil film has been studied by the Maxwell equation. It is found that the polarization characteristics of the oil slicks can help us to overcome this problem. According to the Fresnel formula, the scattering coefficient and scattering rate of the homogeneous oil film have been deduced, and the phase difference of the scattering electromagnetic wave has also been calculated to verify the accuracy of the model. The parameter, a degree of scattering polarization, has been derived to identify the oil slicks on the sea wave. It depends on accurately knowing the Stokes parameter for the reflected light, and varies with the refractive index of the surface layer and viewing angles. The actual spilled oil has been measured by this model, and the oil film can be accurately identified at various angles. These preliminary results suggest that the potential of multi-angle polarization measurement of ocean surface needs further researches.
Źródło:
Optica Applicata; 2020, 50, 3; 433-445
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Motion Center in Quantum Wave Packet Dynamics
Autorzy:
Liu, Qian
Yu, Yanxia
Pan, Hui
Wang, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1398933.pdf
Data publikacji:
2015-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.70.Di
73.43.-f
03.65.Ta
03.65.Sq
Opis:
We seek for an oscillating center solution of the wave function satisfying the Schrödinger equation for a nonrelativistic charge particle in an arbitrary external field, where the oscillating center of physical system is a motion governing by a guidance formula of the classical mechanics and at the same time, the physical system obeys the rule of quantum mechanics. In terms of our approach, one enables to know how quantum process may actually come about. The results are applied to analyze the Landau level. We explain successfully that the orbit of oscillator center for the Landau level is circle.
Źródło:
Acta Physica Polonica A; 2015, 127, 3; 761-766
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Small mammal fauna from Wulanhuxiu (Nei Mongol, China) implies the Irdinmanhan–Sharamurunian (Eocene) faunal turnover
Autorzy:
LI, QIAN
WANG, YUAN-QING
FOSTOWICZ-FRELIK, ŁUCJA
Powiązania:
https://bibliotekanauki.pl/articles/945478.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
mammalia
rodentia
duplicidentata
anagalidae
eocene
ulan shireh formation
china
erlian basin
Opis:
Wulanhuxiu, a middle Eocene locality in the Erlian Basin, Nei Mongol (China) has been commonly regarded as belonging to the Ulan Shireh Formation, equated with the Irdin Manha Formation. We recognized two separate mammalian faunas of different age from the beds exposed at Wulanhuxiu. The lower fossiliferous horizon contains an anagalid, uncommon duplicidentate representatives (Gomphos progressus sp. nov., Mimolagus, Erenlagus, and Strenulagus), and diverse perissodactyls. This combination of taxa points to an Irdinmanhan age, but one element of the fauna (Schlosseria) may represent an Arshantan relic. Overall, the assemblage comprises “paleoplacental” mammals mixed with “neoplacentals”. The upper horizon is less species-rich and the only paleoplacentals present are scarce creodonts. However, this horizon is marked by abundant remains (including postcranial material) of the lagomorph Gobiolagus and by the presence of an advanced form of Gobiomys (Rodentia), and is most probably Sharamurunian in age. Thus, Wulanhuxiu documents replacement, albeit incomplete, of paleoplacentals by neoplacentals in the Chinese Eocene record.
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 4; 759-776
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Attenuation Characteristics of Vibration in a Locally Resonant Phononic Crystal Frame Structure
Autorzy:
Wang, Yukun
Qian, Denghui
Wu, Jinghong
He, Feiyang
Powiązania:
https://bibliotekanauki.pl/articles/176756.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
LRPC frame structure
high-rise building
finite element method
vibration insulation
noise reduction
Opis:
In this paper, a frame structure based on the locally resonant (LR) mechanism of phononic crystals (PCs) is designed on account of the wide application of frame structures in high-rise buildings, and the band structures, displacement fields of eigenmodes, and transmission power spectrums of corresponding finite structure are calculated by finite element (FE) method. Numerical results and further analysis demonstrate that a full band gap with low starting frequency can be opened by the frame structure formed by periodically combining soft and hard materials, and the starting frequency can be further lowered with the adjustment of corresponding geometric parameters, which provides a theoretical basis for the studies on vibration insulation and noise reduction of high-rise buildings.
Źródło:
Archives of Acoustics; 2020, 45, 3; 557-562
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carbon Footprint and Water Footprint of Cashmere Fabrics
Ślad węglowy i ślad wodny tkanin kaszmirowych
Autorzy:
Chen, Bilin
Qian, Weiran
Yang, Yiduo
Liu, Hong
Wang, Laili
Powiązania:
https://bibliotekanauki.pl/articles/1857715.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
cashmere fabrics
carbon footprint
water footprint
environmental impact
tkanina kaszmirowa
ślad węglowy
ślad wodny
wpływ na środowisko
Opis:
Given the serious problems of climate change, water shortage and water pollution, researchers have paid increasing attention to the concepts of the carbon footprint and water footprint as useful indices to quantify and evaluate the environmental impacts of the textile industry. In this study, assessment of the carbon footprints and water footprints of ten kinds of cashmere fabrics was conducted based on the PAS 2050 specification, the Water Footprint Network approach and the ISO 14046 standard. The results showed that knitted cashmere fabrics had a greater carbon footprint than woven cashmere fabrics. Contrarily, woven cashmere fabrics had a greater water footprint than knitted cashmere fabrics. The blue water footprint, grey water footprint and water scarcity footprint of combed sliver dyed woven cashmere fabric were the largest among the ten kinds of cashmere fabrics. The main pollutants that caused the grey water footprints of cashmere fabrics were total phosphorus (TP), chlorine dioxide, hexavalent chromium (Cr (VI)) and sulfide. The leading contributors to the water eutrophication footprint were total nitrogen, ammonia nitrogen, chemical oxygen demand and TP. These typical pollutants contributed 39% ~ 48%, 23% ~ 28%, 12% ~ 24% and 12% ~ 14% to each cashmere product’s water eutrophication footprint, respectively. The leading contributors to the water ecotoxicity footprint were aniline, Cr (VI) and absorbable organic halogens discharged in the dyeing and finishing process.
Biorąc pod uwagę poważne problemy związane ze zmianą klimatu, niedoborem i zanieczyszczeniem wody, naukowcy zwracają coraz większą uwagę na koncepcje śladu węglowego i śladu wodnego jako użytecznych wskaźników do ilościowego określenia i oceny wpływu przemysłu włókienniczego na środowisko. W pracy dokonano oceny śladów węglowych i wodnych dziesięciu rodzajów tkanin kaszmirowych w oparciu o specyfikację PAS 2050, podejście Water Footprint Network oraz normę ISO 14046. Wyniki pokazały, że dzianiny kaszmirowe miały większy ślad węglowy, niż tkaniny kaszmirowe. Natomiast, tkaniny kaszmirowe miały większy ślad wodny niż dzianiny kaszmirowe. Ślad wody niebieskiej, ślad wody szarej i ślad niedoboru wody czesanej tkaniny kaszmirowej barwionej na kolor srebrny były największe wśród dziesięciu rodzajów tkanin kaszmirowych. Głównymi zanieczyszczeniami, które powodowały ślady szarej wody na tkaninach kaszmirowych, były fosfor całkowity (TP), dwutlenek chloru, chrom sześciowartościowy (Cr (VI)) oraz siarczki. Głównymi czynnikami przyczyniającymi się do śladu eutrofizacji wody były azot całkowity, azot amonowy, chemiczne zapotrzebowanie na tlen i TP. Te typowe zanieczyszczenia przyczyniły się odpowiednio 39% ~ 48%, 23% ~ 28%, 12% ~ 24% i 12% ~ 14% do śladu eutrofizacji wody każdego produktu z kaszmiru. Głównymi czynnikami wpływającymi na ślad ekotoksyczności wody były anilina, Cr (VI) i absorbowalne halogenki organiczne uwalniane w procesie barwienia i wykańczania.
Źródło:
Fibres & Textiles in Eastern Europe; 2021, 4 (148); 94-99
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on Reclamation of CO2-hardened Sodium Silicate Used Sands by CaO Powder
Autorzy:
Lu, Jijun
Yang, Lei
Qian, Jiangbing
He, Wei
Wang, Huafang
Powiązania:
https://bibliotekanauki.pl/articles/2174624.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sodium silicate sands
reclamation
orthogonal experiment
wet reclamation
dry reclamation
hardening of the sands
masa krzemianowo-sodowe
regeneracja
utwardzanie
eksperyment
Opis:
Aiming at the problems of wet reclamation consuming a lot of water, dry (mechanical) reclamation having wear and power consumption, this paper to find suitable reclamation reagents to reduce the influence of harmful substances in used sodium silicate sands. By comparing the reclamation effect of CaO, Ca(OH)2 and Ba(OH)2 reclamation powder reagents, it was concluded that CaO had the best reclamation effect. Through the single factor experiment, the influence of CaO on the reclamation effect was explored: 1. addition amount of CaO; 2. the additional amount of water; 3. reclamation time. The orthogonal results showed that the CaO reclamation effect was the best when the amount of CaO was 1.5%, the amount of sodium silicate was 4.0%, the amount of water added was 6.0%, and the reclamation time was 12.0h. In this experiment, 82.2% carbonate and 75.0 % silicate in used sands can be removed. The microscopic analysis of the reclamation sands was carried out by scanning electron microscope (SEM); The surface was relatively smooth, without large area cracks and powder accumulation. Compared with the used sands, the instant, 24h ultimate, and residual strengths of the reclaimed sands were increased by 536.5%, 458.1%, and 89.8%, respectively, which was beneficial to the reclamation of the CO2 sodium silicate used sands.
Źródło:
Archives of Foundry Engineering; 2022, 22, 3; 99--106
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of kaempferide Mannich base derivatives and their antiproliferative activity on three human cancer cell lines
Autorzy:
Nguyen, Van-Son
Shi, Ling
Luan, Fang-Qian
Wang, Qiu-An
Powiązania:
https://bibliotekanauki.pl/articles/1039003.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
kaempferide
flavonoids
Mannich base derivatives
synthesis
antiproliferative activity
Opis:
Kaempferide (3,5,7-trihydroxy-4'-methoxyflavone, 1), a naturally occurring flavonoid with potent anticancer activity in a number of human tumour cell lines, was first semisynthesized from naringin. Based on Mannich reaction of kaempferide with various secondary amines and formaldehyde, nine novel kaempferide Mannich base derivatives 2-10 were synthesized. The aminomethylation occurred preferentially in the position at C-6 and C-8 of the A-ring of kaempferide. All the synthetic compounds were tested for antiproliferative activity against three human cancer cell lines (Hela, HCC1954, SK-OV-3) by the standard MTT method. The results showed that compounds 1, 2 and 5-10 were more potent against Hela cells with IC50 values of 12.47-28.24 μM than the positive control cis-platin (IC50 41.25 μM), compounds 5, 6, 8 and 10 were more potent against HCC1954 cells with IC50 values of 8.82-14.97 μM than the positive control cis-platin (IC50 29.68 μM), and compounds 2, 3, 5, 6 and 10 were more potent against SK-OV-3 cells with IC50 values of 7.67-18.50 μM than the positive control cis-platin (IC50 21.27 μM).
Źródło:
Acta Biochimica Polonica; 2015, 62, 3; 547-552
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of follicle-stimulating hormone receptor (FSHR), protein kinase B-2 (AKT2) and adapter protein with PH domain, PTB domain, and leucine zipper (APPL1) in pig ovaries
Autorzy:
Ning Zhou
Ning Wang
Xiang Qin
Qian Liu
Juhua Wang
Hui Dong
Jie Zhou
Fugui Fang
Powiązania:
https://bibliotekanauki.pl/articles/2087861.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pigs
immunohistochemistry
FSHR
AKT2
APPL1
Źródło:
Polish Journal of Veterinary Sciences; 2017, 4; 661-667
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental Impact Assessment of Discharged Heavy Metals in Textile Production
Ocena wpływu na środowisko metali ciężkich uwalnianych podczas produkcji tekstyliów
Autorzy:
Ji, Xiang
Qian, Weiran
Qiu, Xiaoxiao
Yang, Yiduo
Xu, Pinghua
Wang, Laili
Powiązania:
https://bibliotekanauki.pl/articles/1419924.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
aquatic environment
chemical footprint
environmental impact
heavy metals
środowisko wodne
ślad chemiczny
wpływ na środowisko
metale ciężkie
Opis:
Heavy metals discharged from textile production have serious impacts on human beings and the environment. Chemical footprint (ChF) methodology is an important method in quantifying the environmental loads of discharged chemical pollutants. With the help of ChF methodology, this study used the mean impact method to assess the environmental loads of heavy metals discharged from a textile enterprise. The results showed that the ChFs of discharged heavy metals calculated based on the aquatic environment of Lake Tai and Lake Poyang were 1.43E+8L and 4.64E+8L respectively. Zinc was the largest contributor, followed by copper, lead and cadmium for the two lakes.
Metale ciężkie uwalniane podczas produkcji tekstyliów mają poważny wpływ na ludzi i środowisko. Metodologia określania śladu chemicznego (ChF) jest ważną metodą ilościowego określania obciążenia środowiska przez zanieczyszczenia chemiczne. Z pomocą metodologii ChF w badaniu wykorzystano metodę średniego wpływu do oceny obciążeń środowiskowych metali ciężkich uwalnianych z przedsiębiorstwa włókienniczego. Wyniki pokazały, że współczynniki ChF odprowadzonych metali ciężkich obliczone na podstawie środowiska wodnego Jezior Tai i Poyang wynosiły odpowiednio 1,43E + 8L i 4,64E + 8L. Cynk był największą składową, a za nim miedź, ołów i kadm w przypadku obu jezior.
Źródło:
Fibres & Textiles in Eastern Europe; 2021, 1 (145); 66-69
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical Footprint of the Wet Processing of Cotton Fabric
Ślad chemiczny mokrej obróbki tkanin bawełnianych
Autorzy:
Qian, Weiran
Qiu, Xiaoxiao
Guo, Yiqi
Ji, Xiang
Li, Yi
Wang, Laili
Powiązania:
https://bibliotekanauki.pl/articles/1857664.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
chemical footprint
USEtox
human toxicity
ecotoxicity
grey target decision-making model
ślad chemiczny
toksyczność
ekotoksyczność
model podejmowania decyzji
Opis:
The chemical footprint (ChF) can identify the harmful effects of discharged chemical pollutants, helping producers to select environmentally friendly chemicals to reduce their negative environmental impact. This paper quantified and evaluated the ChF of the wet processing of cotton fabric with data collected from a dyeing enterprise. The results showed that the discharged sodium hydroxide caused the most severe impact in terms of both human toxicity and ecotoxicity due to the extensive usage and its high toxicity. The discharged sodium carbonate and dimethyl silicone oil also had a greater environmental impact. Comprehensive evaluation of human toxicity and ecotoxicity with a multi-objective grey target decision-making model indicated that the pretreatment process had the most significant impact, followed by the finishing process and dyeing process. More attention should be paid to the pretreatment process, such as the selection of environmentally friendly textile chemicals, in order to reduce the native impacts of the wet processing of cotton fabric.
Ślad chemiczny (ChF) może identyfikować szkodliwe skutki emitowanych zanieczyszczeń chemicznych, pomagając producentom wybrać przyjazne dla środowiska środki chemiczne w celu zmniejszenia ich negatywnego wpływu na środowisko. W artykule określono ilościowo i oceniono ChF mokrej obróbki tkaniny bawełnianej na podstawie danych zebranych z przedsiębiorstwa farbiarskiego. Wyniki pokazały, że odprowadzany wodorotlenek sodu miał najpoważniejszy wpływ zarówno pod względem toksyczności dla człowieka, jak i ekotoksyczności, ze względu na szerokie zastosowanie i wysoką toksyczność. Odprowadzany węglan sodu i dimetylosilikonowy olej również miały duży wpływ na środowisko. Kompleksowa ocena toksyczności dla ludzi i ekotoksyczności z zastosowaniem wielocelowego modelu podejmowania decyzji wykazała, że największy wpływ miał proces obróbki wstępnej, a następnie proces wykańczania i proces barwienia. Wskazane jest zwrócenie większej uwagi na proces obróbki wstępnej, w szczególności na wybór przyjaznych dla środowiska chemikaliów tekstylnych.
Źródło:
Fibres & Textiles in Eastern Europe; 2021, 4 (148); 100-104
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł

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