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.

Experimental Study of the Porous Plate Hydrodynamic Cavitation Device and Removal the Algae in Water

2013 ◽  
Vol 800 ◽  
pp. 569-572 ◽  
Author(s):  
Jie Deng ◽  
Jun Zhou
Keyword(s):  
Experimental Study ◽  
Methylene Blue ◽  
Porous Plate ◽  
Radical Scavenging ◽  
Hydrodynamic Cavitation ◽  
Radical Production ◽  
Experimental Apparatus ◽  
Cavitation Intensity ◽  
Relationship Of ◽  
The Relationship

Design a practical and effective hydrodynamic cavitation experimental apparatus, the establishment of cavitation radical scavenging method, the use of methylene blue to study the relationship of the hydroxyl radical production and cavitation cavitation intensity, the study of the various factors of cavitation radical production, and to explore optimal cavitation strengthen the conditions. Hydrodynamic cavitation kill algae has some effect, there will be varying degrees of decline in the concentration of algae. The hydrodynamic cavitation algae suppression and damaging effects.

Photocatalytic Degradation of Phenol by Impure BiFeO3 under Visible Light Irradiation

2015 ◽  
Vol 659 ◽  
pp. 274-278 ◽  
Author(s):  
Katnanipa Wanchai
Keyword(s):  
Visible Light ◽  
Ph Value ◽  
Phenol Degradation ◽  
Solid State Method ◽  
Phenol Solution ◽  
Visible Light Photocatalyst ◽  
Catalyst Amount ◽  
Initial Ph ◽  
State Method ◽  
Perovskite Type

Impure BiFeO3 as a visible light photocatalyst for phenol degradation was synthezied via solid state method. The calcined temperatures of catalysts were studied. The characteristics of the catalysts were determined by XRD, SEM/EDS and BET. The catalysts were mainly composed of rhombohedral distorted perovskite-type BiFeO3 phase with impurity phases (B2Fe4O9, Bi25FeO40 and Bi2O3). Photocatalytic activity of phenol (5 mg/l) was studied in the impure BiFeO3 illuminated with 200 w fluorescence lamps. The catalyst amount and initial pH value of phenol solution on the photocatalytic effiency have been also investigated. In the present experiments, the catalyst calcined at 800°C shows the highest activity. The optimum loading of impure BiFeO3 and pH value were obtained to be 0.5 g/l and 6, respectively.

scholarly journals Characteristics of cows’ cicatricial metabolism of different linearity

2021 ◽  
Vol 213 (10) ◽  
pp. 75-80
Author(s):  
E. Razhina
Keyword(s):  
Statistical Data ◽  
Ph Value ◽  
Rumen Fluid ◽  
Point Of View ◽  
Ideal Line ◽  
Microsoft Office ◽  
Relationship Of ◽  
First Time ◽  
The Relationship ◽  
Veterinary Laboratory

Abstract. The aim of this work is to investigate the relationship between indicators of cicatricial digestion and linearity of cows. Methods. The research was carried out in the breeding enterprises of the Sverdlovsk region on the livestock of Ural-type cows. Cicatricial fluid was collected with an oropharyngeal rubber probe, and a wooden yaw was also used. Cicatricial content was assessed at the Chelyabinsk Interregional Veterinary Laboratory. The pH value was determined by the electrometric method, VFA – in the Markgam apparatus, ammonia – by the microdiffusion method. Ciliates – in Goryaev’s chamber and under a microscope, bacteria – under a microscope with the addition of sodium chloride solution. Statistical data processing was carried out in the Microsoft Office Excel 2010 program. Results. In terms of the number of ciliates and bacteria in the rumen fluid, the Montwick Chieftain cows, characterized by high productive qualities, had an advantage. In terms of pH and VFA, the Vis Back Ideal line was the best. There were no significant differences between the groups in terms of the amount of ammonia in the rumen. The best animals from the point of view of influence on cicatricial metabolism were the animals of the Vis Back Ideal and Montwick Chieftain lineage. Scientific novelty. Studies have shown that linearity is associated with cicatricial digestion in cows. The relationship of bull lines with indicators of cicatricial metabolism of cows has been determined for the first time. The food in the rumen is digested due to the action of bacteria, ciliates, and fungi. An environment has been created in the rumen for the active development of microflora. Bacteria are able to synthesize amino acids and vitamins. The proventriculus can contain up to 50 species of ciliates.

scholarly journals Preliminary Study of Contamination Wastewater on Environment in Slaughterhouse of Merauke City

2018 ◽  
Vol 73 ◽  
pp. 05018
Author(s):  
Nurcholis ◽  
Dirwan Muchlis
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Data Analysis ◽  
Microbial Contamination ◽  
Ph Value ◽  
Quality Standard ◽  
Field Observations ◽  
E Coli ◽  
Preliminary Study ◽  
Water Waste

The purpose of this research is to know the contamination of waste water that happened in slaughterhouse (RPH) city of merauke. Data were obtained based on surveys and field observations and the sample used was RPH water waste each in repeat as many as 6 replications. Data analysis was done descriptively by comparing the result obtained with the standard of quality which have been determined. The results showed that the contamination of waste water all exceeded the quality standard except at pH value. The ALT content of wastewater in RPH 2790 x 104 and contains E. Coli and Salmonella microbes. The high content of BOD, COD, TTS, Ammonia and microbial contamination is thought to be due to the absence of wastewater treatment installation (IPAL) at RPH in accordance with the standard. Proper handling of ammonia waste can reduce the amount of carbon in the atmosphere.

The Influence of pH Value and SO42- Concentration on Strength of Cemented Soil

2011 ◽  
Vol 233-235 ◽  
pp. 2006-2010 ◽  
Author(s):  
Xiao Qiang Dong ◽  
Xiao Hong Bai ◽  
Yong Kang Lv ◽  
Peng Ju Han
Keyword(s):  
Compressive Strength ◽  
Ph Value ◽  
Solution Concentration ◽  
Corrosive Environment ◽  
Unconfined Compression ◽  
Cemented Soil ◽  
Set Up ◽  
Relationship Of ◽  
The Relationship ◽  
Influence Of Ph

The pH value and SO42- concentration in corrosive environment may affect mechanical property of cemented soil inturn to cause some serious damage to structure. The results of tests show that the unconfined compression strength is decreasing with the increase of H2SO4 solution concentration, increasing with the increase of pH value. The pH value is increasing and the SO42- concentration is decreasing with the increase of corrosive time. So it is concluded that compressive strength is closely rated with the pH value, SO42- concentration of corrosive environment and corrosive time. Finally a equation is set up based on the relationship of compressive strength and factors affected, which contain the reduced coefficient of compressive strength, pH value, SO42- concentration and corrosive time. The calculated and measured values are close so that the equation could be used in practical design for reference.

scholarly journals Boron sorption in soils and its extractability by soil tests (Mehlich 3, ammonium acetate and water extraction)

2009 ◽  
Vol 55 (No. 1) ◽  
pp. 42-49 ◽  
Author(s):  
J. Matula
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Ammonium Acetate ◽  
Ph Value ◽  
Exchange Capacity ◽  
Soil Test ◽  
Soil Tests ◽  
Background Data ◽  
Relationship Of ◽  
The Relationship

The aim of the paper was to contribute to the acquisition of background data for the specification of safe boron levels in soils in relation to diagnostics by multi-nutrient soil tests and to CEC (cation exchange capacity) value of soil, pH and soil organic matter. The research was conducted on 24 soils. Sorption was determined after 97 days from the application of B at the rates of 0, 1, 2.5, 5 mg B/kg in H<sub>3</sub>BO<sub>3</sub>. The closest regression of B-sorption was with the CEC value of soil in NH<sub>4</sub>-acetate and water tests and it increased with the increasing application of B (regression at a rate of 5 ppm B; NH<sub>4</sub>-acetate: linear <I>R</I><sup = 0.632, polynomial 2<sup>nd</sup> <I>R</I><sup = 0.644; water: linear R<sup = 0.644, polynomial 2<sup>nd</sup> <I>R</I><sup = 0.599). No relationship was found in the Mehlich 3 test. Regressions of B sorption on pH value were substantially lower. The relationship of B sorption with soil organic matter was similar to CEC, but less close. In the NH<sub>4</sub>-acetate soil test, after the correction of CEC value of soil by pH deviations from the optimum, regression was improved (linear <I>R</I><sup = 0.821, polynomial 2<sup>nd</sup> <I>R</I><sup = 0.837).

scholarly journals Vaginal pH Value for Clinical Diagnosis and Treatment of Common Vaginitis

Diagnostics ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1996
Author(s):  
Yen-Pin Lin ◽  
Wei-Chun Chen ◽  
Chao-Min Cheng ◽  
Ching-Ju Shen
Keyword(s):  
Ph Value ◽  
Modern Society ◽  
Diagnostic Methods ◽  
Medical Attention ◽  
Daily Lives ◽  
Incurable Disease ◽  
Vaginal Ph ◽  
Common Causes ◽  
Relationship Of ◽  
The Relationship

In modern society, 75% of all women worldwide have had vaginitis at least once in their lives. The vagina has a dynamic microbial ecosystem with varying vaginal pH levels. An imbalance in that ecosystem can alter the vaginal pH and tip the scale to the point of causing issues, such as vaginitis, that require medical attention. Although vaginitis is not an incurable disease, it causes discomfort and pain that disrupt women’s daily lives. The most common causes of vaginitis include bacterial vaginosis, trichomoniasis, and vulvovaginal candidiasis. In this review, we discuss the causes, diagnostic methods, and symptoms of different types of vaginitis, the relationship of vaginitis to the prevalence of other diseases, issues associated with recurrent vaginitis and the immune system, and a variety of effective available treatments. In our article, we summarize the relationship of pH with the vaginal ecosystem, discuss the associated factors of vaginal pH, and finally introduce the different available vaginal pH self-test products.

scholarly journals The relationship of redox potential to crustacea abundance at Bama beach of Baluran National Park, Situbondo, Indonesia

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Hariyadi Hariyadi ◽  
Dony Prasetyo ◽  
Yuni Dwi Kurniawati
Keyword(s):  
National Park ◽  
Fish Farming ◽  
Pond Water ◽  
African Catfish ◽  
Randomized Design ◽  
Absolute Growth ◽  
Completely Randomized Design ◽  
Relationship Of ◽  
The Relationship ◽  
Water Waste

Catfish farming is growing rapidly because the cultivation and marketing technology is relatively easy for the community to master, and the required business capital is relatively small. Pond water waste originating from fish metabolism and dissolved food waste is toxic to fish. One of the efforts that can be done is fish farming that is integrated with plants through an aquaponics system. Research to determine the effect of AB Mix addition on the growth of African catfish and lettuce cultivated by the aquaponics system. The research method used was an experimental method with a completely randomized design (CRD) consisting of three treatments and three replications. The addition of AB mixed nutrition did not differ in the growing significance of catfish and lettuce. However, the increase in growth occurred with an increasing dosage of AB mix with the best treatment with AB Mix 3 mL L-1. This treatment resulted in absolute growth in fish of 20.52 g and 4.62 g of watercress. The use of a dosage of AB mix higher than 3 mL L-1 may result in better growth.

Manganese waste water treatment by fungi derived from manganese slag

2010 ◽  
Vol 62 (5) ◽  
pp. 1183-1189
Author(s):  
Yu-Zhu Ou-yang ◽  
Jian-Bing Cao ◽  
Xiao-Ming Li ◽  
Wei Zheng ◽  
Dong-Bo Wang ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Incubation Temperature ◽  
Rotation Speed ◽  
Ph Value ◽  
Water Solution ◽  
Waste Water Treatment ◽  
High Adsorption ◽  
Initial Ph ◽  
Manganese Slag

The aim of this study was to isolate a mould from the surface of manganese slag which had strong resistance and high adsorption of Mn2 + , and to determine the effects of initial Mn2 +  concentration, incubation temperature, rotation speed and inoculation amount on adsorption of Mn2 +  from manganese waste water solution. The result showed that a mould (A5) which was isolated from manganese slag had the adsorption rate of Mn2 +  to 97.5% at the initial pH value 6, inoculation amount 2%, rotation speed 150 r/min, a concentration of Mn2 +  500 mg/L, and a temperature of 28°C cultivated for 50 h. As there is no research on adsorption of Mn2 +  from manganese waste water by fungi before, this research showed a theoretical guidance on this field.

scholarly journals The Relationship of Duration of Fast to the Volume and pH of Gastric Contents

1986 ◽  
Vol 14 (2) ◽  
pp. 128-130 ◽  
Author(s):  
B. R. Hutchinson ◽  
A. F. Merry ◽  
C. J. Wild
Keyword(s):  
Vascular Surgery ◽  
Significant Relationship ◽  
Ph Value ◽  
Anaesthetic Induction ◽  
Positive Correlation ◽  
Ph Values ◽  
Gastric Contents ◽  
The Mean ◽  
Relationship Of ◽  
The Relationship

Volume and pH of gastric contents were measured after anaesthetic induction in 99 in-patients undergoing general and vascular surgery scheduled for either morning (50) or afternoon (49) lists. Significantly fewer patients in the morning group had pH values below 2.5. The mean pH value of the morning group was significantly higher than that of the afternoon group. There was a positive correlation between duration of fast and pH (the longer the more alkaline) for the groups combined. No significant relationship could be shown for any factor with volume.

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