Zeolite and short-cut fiber-based wet-laid filter media for particles and heavy metal ion removal of wastewater

Sun, Kyung Chul; Noh, Jung Woo; Choi, Yeong Og; Jeong, Sung Hoon; Kim, Yeon Sang

doi:10.1177/1528083719866934

Cited by 10 publications

(5 citation statements)

References 41 publications

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“…First, a small amount of inclusions are added to the matrix material to homogenize the whole material. Then add the inclusion material, homogenize it, repeat the project continuously, and finally obtain the mechanical properties of the composite with a certain volume content of inclusions [ 10 ]. The cyclic steps of adding and homogenizing by the differential method are shown in Figure 1 .…”

Section: Methodsmentioning

confidence: 99%

Application of Carbon Fiber Cement-Based Composites in Improving Construction Durability

2022

International Journal of Analytical Chemistry

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In order to improve the durability of building construction, this study proposes a construction method based on carbon fiber and cement-based composites. Analyze the mechanical properties of carbon fiber cement-based composites, combined with experiments to further analyze its advantages in building construction, to achieve the purpose of building durability construction. The experimental results show that the elastic modulus of CFRC samples with a 0.6% carbon fiber volume percentage is the largest. When the content of carbon fiber increases within a certain range, the elastic modulus of CFRC samples will also increase. Conclusion. The application of carbon fiber cement-based composites in building construction can effectively improve the durability of buildings and further improve the quality of buildings.

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Section: Methodsmentioning

confidence: 99%

Application of Carbon Fiber Cement-Based Composites in Improving Construction Durability

2022

International Journal of Analytical Chemistry

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“…The parameters settings of GA are selected that how to provide a search space with suitable diversity to avoid early convergence. In order to evaluate the cost function, a single objective optimization problem based on the Euclidean distance between the target and individual has been defined as equation (12).…”

Section: Optimization Problemmentioning

confidence: 99%

“…Despite studies with regard to the process of coating zeolite on the surface and composites of the flexible material, there are still some difficulties in the fabrication of flexible zeolite, such a complex process for degradation and development of properties. [10][11][12][13] The electrospinning technique, which is an easy-toimplement, economical, and simple method, can be used for increasing efficiency in this respect and flexible zeolite fibers are created using biocompatible polymers. 10,[14][15][16] In order to fabricate a bio-scaffold, bioengineers should carefully select biocompatible polymers with relative degradability for remodeling the tissue.…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of the core-shell nanofibrous composite mat as a scaffold via hybrid models

Haghdoost

Razbin

Bahrami

et al. 2022

Journal of Industrial Textiles

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It has been a challenging subject for researchers to manipulate the electrospinning key factors to achieve a composite nanofiber with proper properties. In this study, an experiment according to central composite design to investigate the effect of parameters including polyvinylpyrrolidone concentration, zeolite concentration, voltage, core flow rate and shell flow rate on diameter, maximum strength and porosity of polyethersulfone/polyvinylpyrrolidone/zeolite core-shell composite nanofiber has been designed. Later on, two sets of models consisting of response surface methodology and artificial neural network are trained. Then, their performance was evaluated based on the definition of a novel goodness function. In the next step, the genetic algorithm is used to find the optimal design for scaffold applications. The results demonstrated that the average goodness value of models based on an artificial neural network ([Formula: see text] 1.999) is higher than response surface methodology ones ([Formula: see text] 1.780). Additionally, the genetic algorithm was able to find an optimal design with lower cost value (0.006) than the optimum sample (0.113) among the produced ones. Finally, the scanning electron microscopy micrographs highlighted that there is a strong and good cell proliferation on the selected design of nanofiber composite mat as the optimum scaffold.

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“…Sun et al investigated the current situation of heavy metal element pollution in rural soil of the Pearl River Delta and showed that in addition to the pollution sources such as chemical fertilizer, pesticides, and livestock and poultry, industrial and other pollution also had a great impact. In addition, the industrial soil in the research area is dominated by excessive Cu, while the planting soil is dominated by excessive Cd [6]. Mukeba et al investigated the spatial distribution and source analysis of 12 heavy metals on the surface of Lianyuan, a typical coal mining city, and the results showed that most heavy metals were related to human activities.…”

Section: Literature Reviewmentioning

confidence: 99%

Chemical Characteristics of Coil Heavy Metal Elements and Ecological Security Risks Caused by Fertilization

Yan-feng

Qing-sheng

Zhong

2022

Journal of Chemistry

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In order to investigate the effects of fertilization on soil chemical characteristics and ecological security, the chemical characteristics and ecological security risk analysis of heavy metal elements in a certain soil caused by fertilization were proposed. The contents of Ni, V, Cr, As, Cd, Pb, Zn, and Hg in 1,065 surface soil samples collected in a district of a city in the southwest agricultural area were tested and analyzed. Multivariate statistical analysis and spatial analysis were used to clarify the geochemical distribution characteristics of these heavy metals, and the possible main sources were also discussed. The results showed that the eight heavy metals could be divided into three categories. The first category included Ni, V, Cr, and As, whose content was lower than the background value in Beijing. And the distribution was mainly affected by natural factors such as parent materials of soil formation. The second category included Cd, Pb, and Zn, whose average content was higher than the background value. And the content was the highest in residential areas. In addition to the parent material inherited from the soil, the distribution characteristics of these elements were greatly affected by human activities. And Cd was significantly more affected by human activities than Pb and Zn. The third category included Hg, and it was inferred that atmospheric deposition was the main factor affecting the distribution of Hg. It was concluded that the Hakanson method was used to evaluate the ecological risk of heavy metals in soil, and the results showed that the potential ecological risk index was low in the area.

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Zeolite and short-cut fiber-based wet-laid filter media for particles and heavy metal ion removal of wastewater

Cited by 10 publications

References 41 publications

Application of Carbon Fiber Cement-Based Composites in Improving Construction Durability

Application of Carbon Fiber Cement-Based Composites in Improving Construction Durability

Modeling and optimization of the core-shell nanofibrous composite mat as a scaffold via hybrid models

Chemical Characteristics of Coil Heavy Metal Elements and Ecological Security Risks Caused by Fertilization

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