Degrading Dynamics of Brilliant Blue in Soils and River Sediment

2012 ◽  
Vol 518-523 ◽  
pp. 3138-3141
Author(s):  
Yong Xia Hou ◽  
Xiao Jun Hu ◽  
Hui Ying Li ◽  
Xin Xin Li ◽  
Yan Wang
Keyword(s):  
Degradation Rate ◽  
River Sediment ◽  
Brilliant Blue ◽  
Affecting Factors ◽  
Soil Sterilization ◽  
Initial Concentration ◽  
Chemical Industrial Park ◽  
Research Objects ◽  
C 30

Abstract. The research objects were the soils along the river and river sediment of the fourth Liuhe river in Nanjing chemical industrial park. Degrading dynamics of brilliant blue in soils and river sediment and its affecting factors were studied through soil sterilization, the control of temperature and initial concentration of brilliant blue. The degradation rate of brilliant blue in non-sterilized soils and river sediment was respectively 1.010-1.023 times and 1.019-1.051 times of that in sterilized soils and river sediment in 45 d. The degradation quality of brilliant blue in soils and river sediment by microorganism was 0.010-0.029 and 0.021-0.057 mg•kg-1. The half-live in non-sterilized treatment was shorter than that in sterilized treatment. In the range of (10±1)°C-(30±1) °C, the degradation of brilliant blue was accelerated with temperature enhancing. At (30±1)°C, the residual quantity of brilliant blue in soils and river sediment was 0.612 and 0.601 mg•kg-1, the residual quantity and the half-live were both smallest.

Removal of Nonylphenol from Water by Ozone

2013 ◽  
Vol 859 ◽  
pp. 357-360 ◽  
Author(s):  
Xiao Dong Wang ◽  
Yang Lv ◽  
Meng Meng Li ◽  
Hong Ye Liu
Keyword(s):  
Reaction Time ◽  
Ozone Concentration ◽  
Degradation Rate ◽  
Ph Value ◽  
Removal Rate ◽  
Affecting Factors ◽  
Initial Concentration ◽  
Lower Temperature ◽  
Better Than

This study investigates the degradation of Nonylphenol. The degradation affecting factors including solution ozone dosage, initial concentration, pH, temperature and ultraviolet. The results indicated that when the ozone contents changes, the Nonylphenols degradation rate changes as well. The higher ozone concentration contribute to the faster degradation; With the increase of initial concentration of Nonylphenol, the removal rate of it decrease on the contrary, while with the initial concentration increases, the quality of unit ozone degradation of Nonylphenol is ascenting and then tend to a constant; The remove rate of Nonylphenol is improving when the pH value vary from 4.86~10.34. The effect of Nonylphenols ozonation in higher temperatures is better than it is in lower temperature; Ultraviolet radiation is also favorable for the removal of Nonylphenol as it can shorten the reaction time as well as reduce the amount of ozone.

Removal of Bisphenol A from Water by Ozone

2013 ◽  
Vol 864-867 ◽  
pp. 155-160 ◽  
Author(s):  
Xiao Dong Wang ◽  
Yang Lv ◽  
Hong Ye Liu ◽  
Meng Meng Li
Keyword(s):  
Reaction Time ◽  
Bisphenol A ◽  
Degradation Rate ◽  
Ph Value ◽  
Removal Rate ◽  
Affecting Factors ◽  
Initial Concentration ◽  
Lower Temperature ◽  
Better Than

This study investigates the degradation of bisphenol A (BPA). The degradation affecting factors including solution ozone dosage, initial concentration, pH, temperature and ultraviolet. The results indicated that when the ozone contents changes, the BPAs degradation rate changes as well. The higher ozone concentration contribute to the faster degradation; With the increase of initial concentration of BPA, the removal rate of it decrease on the contrary, while with the initial concentration increases, the quality of unit ozone degradation of BPA is ascenting and then tend to a constant; The remove rate of BPA is improving when the pH value vary from 4.86~10.34. The effect of BPAs ozonation in higher temperatures is better than it is in lower temperature; Ultraviolet radiation is also favorable for the removal of BPA as it can shorten the reaction time as well as reduce the amount of ozone.

Heteropolyacid Photocatalytical Degradation of Atrazine in Aqueous Solution under UV-Irradiation

2013 ◽  
Vol 652-654 ◽  
pp. 1680-1683
Author(s):  
Wei Yang Shen ◽  
Fei Ye Liu ◽  
Jian Qiu Chen ◽  
Rui Xin Guo
Keyword(s):  
Aqueous Solution ◽  
Organic Compounds ◽  
Uv Irradiation ◽  
Degradation Rate ◽  
Ph Value ◽  
Degradation Products ◽  
Affecting Factors ◽  
Obvious Effect ◽  
Initial Concentration ◽  
Temperature Exposure

The photodegradation of atrazine induced by UV-irradiation in aqueous solution was investigated initially. The affecting factors on the photodetradation were studied and described in details such as atrazine initial concentration, temperature, pH value, exposure intensity, oxidant and co-existing substances. It was found that the atrazine initial concentration had no obvious effect on the photodegradation. With the pH value increasing, photodegradation rates decreased. However, we also observed a positive correlation between the degradation rate of atrazine and temperature, exposure intensity and oxidant while the coexisting organic compounds may decelerate photodegradation of the atrazine in water. In this paper, the degradation products had also been confirmed by using LC-MS.

Photo-catalytic degradation of gaseous pollutants in paper mills of southern China

TAPPI Journal ◽  
2018 ◽  
Vol 17 (03) ◽  
pp. 167-178 ◽  
Author(s):  
Xin Tong ◽  
Jiao Li ◽  
Jun Ma ◽  
Xiaoquan Chen ◽  
Wenhao Shen
Keyword(s):  
Degradation Rate ◽  
Southern China ◽  
Catalytic Degradation ◽  
Pulp And Paper ◽  
Gaseous Pollutants ◽  
Pulp And Paper Mills ◽  
Paper Mills ◽  
Initial Concentration ◽  
First Order ◽  
First Order Kinetics

Studies were undertaken to evaluate gaseous pollutants in workplace air within pulp and paper mills and to consider the effectiveness of photo-catalytic treatment of this air. Ambient air at 30 sampling sites in five pulp and paper mills of southern China were sampled and analyzed. The results revealed that formaldehyde and various benzene-based molecules were the main gaseous pollutants at these five mills. A photo-catalytic reactor system with titanium dioxide (TiO2) was developed and evaluated for degradation of formaldehyde, benzene and their mixtures. The experimental results demonstrated that both formaldehyde and benzene in their pure forms could be completely photo-catalytic degraded, though the degradation of benzene was much more difficult than that for formaldehyde. Study of the photo-catalytic degradation kinetics revealed that the degradation rate of formaldehyde increased with initial concentration fitting a first-order kinetics reaction. In contrast, the degradation rate of benzene had no relationship with initial concentration and degradation did not conform to first-order kinetics. The photo-catalytic degradation of formaldehyde-benzene mixtures indicated that formaldehyde behaved differently than when treated in its pure form. The degradation time was two times longer and the kinetics did not reflect a first-order reaction. The degradation of benzene was similar in both pure form and when mixed with formaldehyde.

scholarly journals High-Temperature Short-Time and Holder Pasteurization of Donor Milk: Impact on Milk Composition

Life ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 114
Author(s):  
Diana Escuder-Vieco ◽  
Juan M. Rodríguez ◽  
Irene Espinosa-Martos ◽  
Nieves Corzo ◽  
Antonia Montilla ◽  
...  
Keyword(s):  
High Temperature ◽  
Human Milk ◽  
Milk Composition ◽  
Donor Human Milk ◽  
High Temperature Short Time ◽  
Lactose Concentration ◽  
C 30 ◽  
Milk Banks ◽  
Short Time

Holder pasteurization (HoP; 62.5 °C, 30 min) is commonly used to ensure the microbiological safety of donor human milk (DHM) but diminishes its nutritional properties. A high-temperature short-time (HTST) system was designed as an alternative for human milk banks. The objective of this study was to evaluate the effect of this HTST system on different nutrients and the bile salt stimulated lipase (BSSL) activity of DHM. DHM was processed in the HTST system and by standard HoP. Macronutrients were measured with a mid-infrared analyzer. Lactose, glucose, myo-inositol, vitamins and lipids were assayed using chromatographic techniques. BSSL activity was determined using a kit. The duration of HTST treatment had a greater influence on the nutrient composition of DHM than did the tested temperature. The lactose concentration and the percentage of phospholipids and PUFAs were higher in HTST-treated than in raw DHM, while the fat concentration and the percentage of monoacylglycerides and SFAs were lower. Other nutrients did not change after HTST processing. The retained BSSL activity was higher after short HTST treatment than that following HoP. Overall, HTST treatment resulted in better preservation of the nutritional quality of DHM than HoP because relevant thermosensitive components (phospholipids, PUFAs, and BSSL) were less affected.

Study on Fe3O4 Magnetism Nanoparticle Catalytic Degradation of Brilliant Blue Dye in Wastewater

2013 ◽  
Vol 726-731 ◽  
pp. 2960-2963
Author(s):  
Ai Hui Liang ◽  
Dong Qin Han ◽  
Hui Yue Gan ◽  
Zhi Liang Jiang
Keyword(s):  
Spectrophotometric Method ◽  
Degradation Rate ◽  
Catalytic Degradation ◽  
Brilliant Blue ◽  
Blue Dye ◽  
Optimal Conditions ◽  
Buffer Solution ◽  
The Media

In this paper, the effect of Fe3O4nanoparticle catalytic degradation brilliant blue X-BR dye was studied using spectrophotometric method. It was found that in the media of pH 0.65 HCl-NaAc buffer solution, 100 μmol/L H2O2, 0.7 g/L Fe3O4nanoparticle and the temperature 25°C, the degradation rate for reactive brilliant blue X-BR was over 93.5% in 20 min under the optimal conditions.

Effects of over Heat and Casting Speed on Quality of GCr15 Billet

2014 ◽  
Vol 997 ◽  
pp. 534-537 ◽  
Author(s):  
Qi Wei Zuo ◽  
Xia An ◽  
Jing Bo Yang ◽  
Da Qiang Cang
Keyword(s):  
Casting Speed ◽  
The Other ◽  
Steel Making ◽  
Average Grade ◽  
Upset Forging ◽  
C 30 ◽  
Better Than ◽  
Center Porosity

In order to improve the quality of the billets, the whole test proceedings by the comparison of the two casting conditions which one is over heat 20°C-30°C under casting speed 0.4m/min-0.6m/min and the other is over heat 10°C-15 °C under casting speed 1.3m/min-1.6m/min are checked during the produce process of GCr15 in some domestic steel-making plant. The results show that the average grade of general porosity decreases 1.0, the average grade of center porosity down 0.5, the average grade of center segregation fall 0.5 and the samples tested in hot upset forging perform better than before. According to the results, the latter is determined to be accepted.

A Review of Fidelity of Implementation in Intervention Research Published in JTPE and RQES

2021 ◽  
pp. 1-5
Author(s):  
Weidong Li ◽  
Lian Ma ◽  
Ping Xiang ◽  
Yan Tang
Keyword(s):  
Physical Education ◽  
Conceptual Framework ◽  
Intervention Studies ◽  
Intervention Research ◽  
Fidelity Of Implementation ◽  
Program Delivery ◽  
Program Adherence ◽  
C 30 ◽  
Program Differentiation

Purpose: The purpose of this study was to review and evaluate the quality of fidelity of implementation (FOI) reported in experimental research in physical education pedagogy published in the Research Quarterly for Exercise and Sport and the Journal of Teaching in Physical Education using a five-component conceptual framework. Methods: Thirty-five intervention studies were coded using a five-item FOI checklist with indicators. For each of the five items, frequencies and percentages were calculated. Results: Authors of intervention studies reported components of FOI including (a) 35 studies assessing program adherence, (b) eight studies assessing dosage/program durations, (c) 30 studies assessing program delivery quality, (d) eight studies assessing participant responses to program interventions, and (e) 19 studies assessing program differentiation. The most frequently reported FOI components were program adherence, program delivery quality, and program differentiation. Conclusions: Researchers have begun to realize the critical importance of FOI in intervention research. Most researchers selected certain FOI components to assess and report at their own discretion. Researchers may need to pay more attention to FOI. The five-component conceptual framework is one method for doing this assessment.

In Vitro and In Vivo Degradation, Mechanical Properties, and Histocompatibility of Weft-Knitted Silk Mesh-Like Grafts

2022 ◽  
Vol 12 (2) ◽  
pp. 411-416
Author(s):  
Liang Tang ◽  
Si-Yu Zhao ◽  
Ya-Dong Yang ◽  
Geng Yang ◽  
Wen-Yuan Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Degradation Rate ◽  
Maximum Load ◽  
Artificial Ligament ◽  
In Vivo Degradation

To investigate the degradation, mechanical properties, and histocompatibility of weft-knitted silk mesh-like grafts, we carried out the In Vitro and In Vivo silk grafts degradation assay. The In Vitro degradation experiment was performed by immersing the silk grafts in simulated body fluid for 1 year, and the results showed that the degradation rate of the silk mesh-like grafts was very slow, and there were few changes in the mechanical properties and quality of the silk mesh-like graft. In Vivo degradation assay was taken by implantation of the silk mesh-like grafts into the subcutaneous muscles of rabbits. At 3, 6, and 12 months postoperation, the rate of mass loss was 19.36%, 31.84%, and 58.77%, respectively, and the maximum load was 63.85%, 34.63%, and 10.76%, respectively of that prior to degradation. The results showed that the degradation rate of the silk graft and the loss of mechanical properties In Vivo were faster than the results obtained in the In Vitro experiments. In addition, there were no significant differences in secretion of serum IL-6 and TNF-α between the experimental and normal rabbits (P >0.05), suggesting no obvious inflammatory reaction. The findings suggest that the weft-knitted silk mesh-like grafts have good mechanical properties, histocompatibility, and In Vivo degradation rate, and therefore represent a candidate material for artificial ligament

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