scholarly journals Selection of cutting and washing fluids as a method of waste minimization

2007 ◽  
Vol 9 (3) ◽  
pp. 143-146
Author(s):  
Agnieszka Rymarczyk ◽  
Krystyna Mędrzycka ◽  
Renata Tomczak-Wandze
Keyword(s):  
Corrosion Test ◽  
Tap Water ◽  
Waste Minimization ◽  
Cutting Fluids ◽  
Washing Process ◽  
Fluid Concentration ◽  
Selection Of

Selection of cutting and washing fluids as a method of waste minimization The results of the corrosion test for washing and cutting fluids used in the process of gear-shafts production are presented. The test has been performed according to the DIN 51360-2 (Ford-test) and the PN-92/M-55789 procedures. Three cutting fluids and three washing fluids were chosen and their solutions in tap water (used in practice in the company) were investigated. On the basis of the obtained results it has been stated that the lower the fluid concentration, the stronger corrosion is developed. The concentrations recommended by the producer in the case of cutting fluids are properly chosen. For washing fluids two regions of concentration have been evaluated. The concentration recommended for rinsing is too low for protection against corrosion, while higher concentrations, for the washing process, are properly chosen, and corrosion did not occur.

scholarly journals Membrane Distillation for the Production of Pharmaceutical-Grade Water—Investigation into the Application of AGMD and VMD

2021 ◽  
Vol 18 (11) ◽  
pp. 6058
Author(s):  
Cornelius Nellessen ◽  
Thomas Klein ◽  
Hans-Jürgen Rapp ◽  
Frank Rögener
Keyword(s):  
Energy Demand ◽  
Tap Water ◽  
Membrane Distillation ◽  
Pharmaceutical Products ◽  
Optimum Process ◽  
The European Union ◽  
Pharmaceutical Ingredients ◽  
Multi Stage ◽  
One Step ◽  
Selection Of

The production of pharmaceutical ingredients, intermediates and final products strongly depends on the utilization of water. Water is also required for the purification and preparation of reagents. Each specific application determines the respective water quality. In the European Union, the European Pharmacopeia (Ph. Eur.) contains the official standards that assure quality control of pharmaceutical products during their life cycle. According to this, the production of water for pharmaceutical use is mainly based on multi-stage distillation and membrane processes, especially, reverse osmosis. Membrane distillation (MD) could be an alternative process to these classical methods. It offers advantages in terms of energy demand and a compact apparatus design. In the following study, the preparation of pharmaceutical-grade water from tap water in a one-step process using MD is presented. Special emphasis is placed on the performance of two different module designs and on the selection of optimum process parameters.

scholarly journals Water resources management at the fish processing industry using waste minimization approach

2018 ◽  
Vol 74 ◽  
pp. 06004
Author(s):  
Setia Devi Kurniasih ◽  
Tri Edhi Budhi Soesilo ◽  
Roekmijati W. Soemantojo
Keyword(s):  
Water Resources ◽  
Water Consumption ◽  
Liquid Waste ◽  
Raw Material ◽  
Waste Minimization ◽  
Fish Processing ◽  
Processing Industry ◽  
Washing Process ◽  
Minimization Approach ◽  
Consumption Saving

This study investigated waste minimization opportunities and implementation strategy at the fish processing industry. This study used quantitative approach with field observation and open list of questionnare method to identify resources saving. The result of this study showed that fish processing industry (Company XYZ) was not implemented a waste minimization approach. The water resources saving reached 89.76 m3 or 27.2% from fresh water per a week of the production process and water consumption saving for washing process reached 30%. The utilization of solid waste can generate economic potential reached 26% of raw material, while liquid waste reached 51% of water consumption. The waste minimization approach hopefully would assist interested the company and bring both increase environmental performance and competitive advantage in the whole fish processing industry, especially in Indonesia.

Selection of cutting fluids

1977 ◽  
Vol 10 (1) ◽  
pp. 13-16
Author(s):  
L.H. Haygreen
Keyword(s):  
Cutting Fluids ◽  
Selection Of

scholarly journals Logistic Regression with Wave Preprocessing to Solve Inverse Problem in Industrial Tomography for Technological Process Control

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8116
Author(s):  
Tomasz Rymarczyk ◽  
Konrad Niderla ◽  
Edward Kozłowski ◽  
Krzysztof Król ◽  
Joanna Maria Wyrwisz ◽  
...  
Keyword(s):  
Inverse Problem ◽  
Logistic Regression ◽  
Image Reconstruction ◽  
Tap Water ◽  
Machine Learning Algorithms ◽  
Data Sets ◽  
Impedance Tomography ◽  
The Subject ◽  
Vector Images ◽  
Selection Of

The research presented here concerns the analysis and selection of logistic regression with wave preprocessing to solve the inverse problem in industrial tomography. The presented application includes a specialized device for tomographic measurements and dedicated algorithms for image reconstruction. The subject of the research was a model of a tank filled with tap water and specific inclusions. The research mainly targeted the study of developing and comparing models and methods for data reconstruction and analysis. The application allows choosing the appropriate method of image reconstruction, knowing the specifics of the solution. The novelty of the presented solution is the use of original machine learning algorithms to implement electrical impedance tomography. One of the features of the presented solution was the use of many individually trained subsystems, each of which produces a unique pixel of the final image. The methods were trained on data sets generated by computer simulation and based on actual laboratory measurements. Conductivity values for individual pixels are the result of the reconstruction of vector images within the tested object. By comparing the results of image reconstruction, the most efficient methods were identified.

scholarly journals Evaluation of Blackgram (Vigna mungo L.) Genotypes for their Tolerance to Flooding

2019 ◽  
Vol 17 (1-2) ◽  
pp. 89-101
Author(s):  
MS Rana ◽  
MA Hossain ◽  
TA Urmi ◽  
S Ahmed ◽  
MM Haque ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Tap Water ◽  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Yield Reduction ◽  
Wide Range ◽  
Randomized Complete Block Design ◽  
Pod Length ◽  
Selection Of

Waterlogging is one the major abiotic stresses that affects growth and yield of blackgram. A field experiment was carried out at the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706 during kharif II season to evaluate 26 blackgram genotypes for understanding the flood tolerance in respect of yield and yield contributing characters. The experiment was laid out with a randomized complete block design with three replications. Water logging depth was 3-5 cm, created by irrigation from tap water and imposed at 29 days after emergence of seedlings which was maintained for 8 days. Multivariate analysis was performed involving eight qualitative plant characters. A wide range of variation was found for all the qualitative plant characters like plant height, plant dry weight, branches per plant, pods per plant, pod length, seeds per pod, 1000-seed weight and yield per plant. Flooding reduced all the growth parameters of blackgram but degree of reduction varied greatly over the blackgram genotypes. Considering yield performance, the genotypes BU Acc 25 showed the highest yield per plant (9.03 g) followed by the BU Acc 17 (6.47 g) and BU Acc 24 (6.17) under flooding . The yield reduction percent of the same genotypes were minimum (43.86, 60.82 and 65.96, respectively) compared to control which is very important for selection of those genotypes as a flooding tolerant. The Agriculturists 2019; 17(1-2) 89-101

scholarly journals Control of microbial contamination in drinking water from microfiltering dispensers by dialysis ultrafilters

2016 ◽  
Vol 27 (2) ◽  
pp. 87-93 ◽  
Author(s):  
Luca Bolelli ◽  
Elida Nora Ferri ◽  
Stefano Girotti
Keyword(s):  
Drinking Water ◽  
Flow Rate ◽  
Biofilm Formation ◽  
Pathogenic Bacteria ◽  
Tap Water ◽  
Plate Count ◽  
Resistant Bacteria ◽  
Contamination Levels ◽  
Selection Of

Abstract Tap water filtering devices are widely employed to improve odor and taste of tap water, or to obtain refrigerated or sparkling drinking water. The presence of disinfectants-resistant bacteria in tap water is responsible of the biofilm formation inside tubes and tanks. The consequent contamination of dispensed water is a well-known hygiene problem because of the quite constant presence of potentially pathogenic bacteria likes P. aeruginosa. In this study, we tested the technical feasibility and effectiveness of the addition to different commercial devices of a packaged polysulphone fibers filter. We aimed to find a simple solution to implement the quality of the delivered water. Water contamination levels were determined in a wide selection of microfiltered water dispensers and we selected among them a representative group of 10 devices, new or in use. The packaged ultrafilter was introduced in about half of them, to monitor, when possible, in parallel the contamination levels and flow rate of a couple of identical units, with and without the filter. The placement of the dialysis filters resulted feasible at different positions along the water circuits of the variously designed filtration units. Delivered water resulted completely free from bacteria when the filter was placed exactly at, or very close to, the outlet in spite of the inner surfaces contamination. This performance was not obtained in presence of a more or less long tract of water circuits downstream the ultrafilter: a significant but not complete reduction of the plate count numbers was observed. The filters worked in continue over the whole study period, ten months, showing exactly the same efficiency. Moreover, the flow rate in presence of the filter was quite unaffected. The addition of this kind of filter to already in use water dispensers was technically easy, and its use can be recommended in all cases a simple but reliable water sanitization is requested.

scholarly journals DOCA-salt treatment enhances responses to endothelin-1 in murine corpus cavernosumThis article is one of a selection of papers published in the special issue (part 1 of 2) on Forefronts in Endothelin.

2008 ◽  
Vol 86 (6) ◽  
pp. 320-328 ◽  
Author(s):  
Fernando S. Carneiro ◽  
Fernanda R.C. Giachini ◽  
Victor V. Lima ◽  
Zidonia N. Carneiro ◽  
Kênia P. Nunes ◽  
...  
Keyword(s):  
Kinase Inhibitor ◽  
Tap Water ◽  
Corpus Cavernosum ◽  
Rho Kinase ◽  
Electrical Field Stimulation ◽  
Salt Treatment ◽  
Rho Kinase Inhibitor ◽  
Salt Hypertension ◽  
Selection Of ◽  
Added Salt

The penis is kept in the flaccid state mainly via a tonic activity of norepinephrine and endothelins (ETs). ET-1 is important in salt-sensitive forms of hypertension. We hypothesized that cavernosal responses to ET-1 are enhanced in deoxycorticosterone acetate (DOCA)-salt mice and that blockade of ETA receptors prevents abnormal responses of the corpus cavernosum in DOCA-salt hypertension. Male C57BL/6 mice were unilaterally nephrectomized and treated for 5 weeks with both DOCA and water containing 1% NaCl and 0.2% KCl. Control mice were uninephrectomized and received tap water with no added salt. Animals received either the ETA antagonist atrasentan (5 mg·day−1·kg−1 body weight) or vehicle. DOCA-salt mice displayed increased systolic blood pressure (SBP), and treatment with atrasentan decreased SBP in DOCA-salt mice. Contractile responses in cavernosal strips from DOCA-salt mice were enhanced by ET-1, phenylephrine, and electrical field stimulation (EFS) of adrenergic nerves, whereas relaxations were not altered by IRL-1620 (an ETB agonist), acetylcholine, sodium nitroprusside, and EFS of nonadrenergic noncholinergic nerves. PD59089 (an ERK1/2 inhibitor), but not Y-27632 (a Rho-kinase inhibitor), abolished enhanced contractions to ET-1 in cavernosum from DOCA-salt mice. Treatment of DOCA-salt mice with atrasentan did not normalize cavernosal responses. In summary, DOCA-salt treatment in mice enhances cavernosal reactivity to contractile, but not to relaxant, stimuli, via ET-1/ETA receptor-independent mechanisms.

scholarly journals Physicochemical Quality and Chemical Safety of Chlorine as a Reconditioning Agent and Wash Water Disinfectant for Fresh-Cut Lettuce Washing

2013 ◽  
Vol 79 (9) ◽  
pp. 2850-2861 ◽  
Author(s):  
Sam Van Haute ◽  
Imca Sampers ◽  
Kevin Holvoet ◽  
Mieke Uyttendaele
Keyword(s):  
Escherichia Coli ◽  
Water Contamination ◽  
Tap Water ◽  
Water Disinfection ◽  
Wash Water ◽  
Chemical Safety ◽  
Residual Concentration ◽  
Content Type ◽  
Washing Process ◽  
Fresh Cut

ABSTRACTChlorine was assessed as a reconditioning agent and wash water disinfectant in the fresh-cut produce industry. Artificial fresh-cut lettuce wash water, made from butterhead lettuce, was used for the experiments. In the reconditioning experiments, chlorine was added to artificial wash water inoculated withEscherichia coliO157 (6 log CFU/ml). Regression models were constructed based on the inactivation data and validated in actual wash water from leafy vegetable processing companies. The model that incorporated chlorine dose and chemical oxygen demand (COD) of the wash water accurately predicted inactivation.Listeria monocytogeneswas more resistant to chlorine reconditioning in artificial wash water thanSalmonellaspp. andEscherichia coliO157. During the washing process with inoculated lettuce (4 log CFU/g), in the absence of chlorine, there was a rapid microbial buildup in the water that accumulated to 5.4 ± 0.4 log CFU/100 ml after 1 h. When maintaining a residual concentration of 1 mg/liter free chlorine, wash water contamination was maintained below 2.7, 2.5, and 2.5 log CFU/100 ml for tap water and artificial process water with COD values of 500 and 1,000 mg O2/liter, respectively. A model was developed to predict water contamination during the dynamic washing process. Only minor amounts of total trihalomethanes were formed in the water during reconditioning. Total trihalomethanes accumulated to larger amounts in the water during the wash water disinfection experiments and reached 124.5 ± 13.4 μg/liter after 1 h of execution of the washing process in water with a COD of 1,000 mg O2/liter. However, no total trihalomethanes were found on the fresh-cut lettuce after rinsing.

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