The Relationship Between Mineral Content and Flocculant Characteristics for Slurry Waste Water Recycling at Marble Processing Plants

2015 ◽  
Vol 35 (3) ◽  
pp. 332-336 ◽  
Author(s):  
Diler Katircioglu Bayel ◽  
Zeki Karaca ◽  
Vildan Onen ◽  
Ahmet Hamdi Deliormanli
Keyword(s):  
Waste Water ◽  
Mineral Content ◽  
Water Recycling ◽  
Processing Plants ◽  
The Relationship

scholarly journals Degradation of recalcitrant organic polluants in seafood wastewater by modified TiO2 photocatalysts

2017 ◽  
Vol 1 (T4) ◽  
pp. 241-248
Author(s):  
Loc Cam Luu ◽  
Da Linh Ho ◽  
Phu Chi Hoang ◽  
Tri Nguyen ◽  
Van Thi Thuy Nguyen ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Discharge ◽  
Pure Tio2 ◽  
Reaction Conditions ◽  
Tio2 Photocatalysts ◽  
Processing Plants ◽  
Seafood Processing ◽  
The Relationship

In seafood processing plants, industrial waste water discharge reached virtually the level B (QCVN 11-MT:2015/BTNMT) after using mechanical, physicochemical and biological wastewater treatment methods. However, their COD values (COD = 20-120 mg/L) were not qualified for allowable concentration of discharge requirement - level A (COD ≤ 75 mg/L) in many cases. In this paper, bio-treated seafood waster water was continually treated by TiO2 photocatalyst modified by doping Fe and N to degrade recalcitrant organic pollutants to obtain the A level water which can be resused. TiO2 modified by doping Fe and N were prepared and investigated the physico-chemicalproperties. The results showed that modified TiO2 had a lower band gap and more photoactivity than pure TiO2. Beside that, at the reaction conditions: reaction temperature 25 oC, dissolved oxygen concentration 7.6 mg/L and pH = 7, the optimal concentration of catalysts was determined (1.25 g/L). After 12 hours of treatment, COD removal efficiency on TiO2-Fe and TiO2-N catalysts attained 41.1 % and 64.3 %, respectively, and their COD values reached 49.3 and 29.9 mg/L, correspondingly. After treatment, the quality of waste water discharge met the level A (QCVN 11-MT:2015/BTNMT) and became a safety source for reusing (QCVN 08-MT:2015/BTNMT). In addition, the relationship between the characterization of modifed TiO2 and their activity was characterized.

scholarly journals The Positive Relationship between Moderate-to-Vigorous Physical Activity and Bone Mineral Content Is Not Mediated by Free Leptin Index in Prepubertal Children: The PANIC Study

2021 ◽  
Vol 18 (10) ◽  
pp. 5365
Author(s):  
Annie M. Constable ◽  
Josie E. Porter ◽  
Danielle Benger ◽  
Dimitris Vlachopoulos ◽  
Alan R. Barker ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content ◽  
Vigorous Physical Activity ◽  
Normal Weight ◽  
Cross Sectional ◽  
Prepubertal Children ◽  
Total Body ◽  
The Relationship

Purpose: Moderate-to-vigorous physical activity (MVPA) positively influences bone mineral content (BMC) in prepubertal children, but it is unknown whether this relationship is partially mediated by free leptin index. The aim of this study was to examine whether the relationship between MVPA and total body less head (TBLH) BMC is mediated or moderated by free leptin index in prepubertal children. Methods: We performed a cross-sectional analysis on 401 children (194 girls) from baseline examinations of the Physical Activity and Nutrition in Childhood Study. We applied the four-way decomposition mediation analysis method to assess whether free leptin index, measured from fasted blood samples, mediated the relationship between accelerometer-measured MVPA and TBLH BMC measured by dual-energy X-ray absorptiometry. Results: MVPA had a positive controlled direct effect on TBLH BMC in girls and boys (β = 0.010 to 0.011, p < 0.05). There was no mediation or interaction between MVPA, free leptin index and TBLH BMC in girls or boys (β = −0.000 to 0.001, p > 0.05). Conclusion: Our study indicates that MVPA positively influences TBLH BMC through pathways not related to free leptin index in predominantly normal-weight prepubertal children, likely primarily through mechanical loading. The relationships between MVPA, free leptin index and TBLH BMC may be influenced by other factors such as pubertal status and adiposity, so it is unknown whether these observations extend to overweight and obese children at different stages of puberty.

The relationship between the swelling of cortical bone and its mineral content

1980 ◽  
Vol 13 (9) ◽  
pp. 795
Author(s):  
Harold Lipshitz ◽  
J. Lawrence Katz
Keyword(s):  
Cortical Bone ◽  
Mineral Content ◽  
The Relationship

Volatile Sulfur Compounds Produced by Methionine Degrading Bacteria and the Relationship to Concrete Corrosion

1984 ◽  
Vol 39 (3-4) ◽  
pp. 240-243 ◽  
Author(s):  
Manfred Pohl ◽  
Eberhard Bock ◽  
Marian Rinken ◽  
Mitat Aydin ◽  
Wilfried A. König
Keyword(s):  
Waste Water ◽  
Gas Chromatography ◽  
Glucose Concentration ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide ◽  
Proteus Vulgaris ◽  
Concrete Corrosion ◽  
Degrading Bacteria ◽  
The Relationship ◽  
Volatile Sulfur

Pseudomonas fluorescens, Proteus vulgaris, and Serratia marcescens, members of the microflora of soil and waste water, attacked methionine in the presence of glucose. The sulfur of methionine was released as methane thiol, dimethyl sulfide and dim ethyl disulfide. The volatile sulfur com pounds were qualitatively and quantitatively investigated by gas chromatography. Dimethyl disulfide was formed of methane thiol by various bacteria to a different extent. Growing in the presence of oxygen, S. marcescens oxidized most of the m ethane thiol to dim ethyl disulfide. In the presence of glucose. P. fluorescens dissimilated m ethionine with production of m ethane thiol and dimethyl disulfide. The dissimilation was stimulated with decreasing glucose concentration

QUESTIONS ON OPTIMUM DEVELOPMENT OF COMPLEX FOR MULTI-POINT CONTROL AND EVALUATION OF CONTAMINATION OF WATER BASINS POLLUTED BY WASTE WATER OF MINING AND PROCESSING PLANTS

2021 ◽  
pp. 48-54
Author(s):  
B. L. Djafarova
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Natural Water ◽  
Large Scale ◽  
Measuring System ◽  
External Irradiation ◽  
Dissolved Organic Matters ◽  
Processing Plants ◽  
Optimum Type ◽  
Special Limitation

The paper is devoted to questions on optimum development of complex for control and evaluation of contamination of water basins used for collection of industrial waste water. The purpose of the paper is development of scientific-methodical basics for development of measuring system for control and evaluation of contamination of natural water basins with heavy metals using method of attenuation of irradiation of dissolved organic matters excited by external irradiation. The task on optimization of operational regime of measuring complex for control and evaluation of contamination of natural water basins by waste water of large scale point type polluter of environment with heavy metals. The known model of Shtern-Volmer is used as a basis which assumes non-linear relationship between formed complex and fluorescent irradiations attenuation degree. It is noted that potential possibilities of Shtern-Volmers model are used not fully till now. So that in known researches the water objects polluted by several same sources are mainly researched. It is shown that Shtern-Volmer model is also applicable for analysis and estimation of pollution of water basins by single strong polluter that is mining and processing plants. For analysis the suggested special parameter, inversely proportional to concentration of heavy metals in water is used. Integration of this parameter on all possible values of heavy metals concentration and imposition of special limitation condition on the searched for function of dependence of attenuated part of fluorescent irradiation on maximum concentration of heavy metals make it possible to formulate and solve the task on searching of optimum type of this function providing for the optimum regime of operation of the complex.

Abstract P615: Stress-Induced Changes in Total Bone Mineral Content and Total Bone Mineral Density due to Activation of the Renin-Angiotensin-Aldosterone System in Adolescent Females

Hypertension ◽  
2016 ◽  
Vol 68 (suppl_1) ◽  
Author(s):  
Vishwajeeth Pasham ◽  
Deborah Stewart ◽  
Laura Carbone ◽  
Gregory A Harshfield
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral Content ◽  
Bone Metabolism ◽  
Bone Mineral ◽  
Mineral Content ◽  
Mineral Density ◽  
Renin Angiotensin Aldosterone System ◽  
Total Bone Mineral Density ◽  
Total Bone Mineral Content ◽  
The Relationship

Background: Previous literature has shown a strong negative effect of angiotensin II (ANGII) on bone metabolism within mouse models. Additionally, psychological stress has been associated with activation of the renin-angiotensin-aldosterone system (RAAS). Stress has also been related to lower total bone mineral density (TBMD). However, there is controversy in the literature examining the relationship between the RAAS and bone metabolism within humans and stress has not been considered as a direct link between these systems. Purpose: We aimed to examine the relationship between stress-induced RAAS activation and TBMD and total bone mineral content (TBMC). Methods: Participants were placed on a sodium controlled diet for three days. Participants then underwent two hours rest, one hour mental stressor, and two hours recovery with hourly collections of blood/urine samples. Renin, ANGII, aldosterone, TBMD and TBMC were measured. Results: This study recruited 586 adolescents (mean age 16±1.116) with 51% women and 62% African-American and 38% Caucasian. Overall, relationships were observed between ANGII and aldosterone, and TBMC and TBMD controlling for age, race, and BMI. During stress, aldosterone was related to TBMD (r=-.150, p<0.05) and ANGII was related to TBMC (r=-.156, p<0.05) and TBMD (r=-.139, p<0.05). When comparing males and females, only females demonstrated a relationship between TBMC and ANGII in response to stress (stress: r=-.229, p<0.05; post-stress: r=-.277, p<0.01) and between aldosterone and TBMC (stress: r=-.199, p<0.05) and TBMD (stress: r=-.250, p<0.01). Renin was not significantly correlated with TBMD nor TBMC in any population. Conclusion/Interpretations: These data suggest that stress-induced RAAS activation may be associated with lower TBMD and TBMC in girls. Despite small correlations, consistency across multiple measures of RAAS activation being apparent in adolescents is significant. This observation may indicate that stress activation of RAAS contributes to bone remodeling in early life.

Study of Porous Plate Hydrodynamic Cavitation Device for P-Nitrophenol

2014 ◽  
Vol 1015 ◽  
pp. 385-388 ◽  
Author(s):  
Jie Deng
Keyword(s):  
Waste Water ◽  
Ph Value ◽  
Phenol Degradation ◽  
Porous Plate ◽  
Hydrodynamic Cavitation ◽  
Phenol Solution ◽  
Initial Ph ◽  
Relationship Of ◽  
The Relationship ◽  
Water Waste

Design a set of practical and effective hydraulic cavitation experiment device, hydraulic cavitation reactor, using porous plate for nitro phenol solution to simulate wastewater, respectively in different cavitation number initial pH value, initial concentration of the waste water, waste water, the cycle time, use different types of porous surface processing and analysis, through the experimental research, it is concluded that these factors and the relationship of nitro phenol degradation rate.

Waste water recycling - a case study

2008 ◽  
Vol 109 (9) ◽  
pp. 280-282 ◽  
Author(s):  
Peter Wragg
Keyword(s):  
Waste Water ◽  
Water Recycling
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