scholarly journals Reuse of effluent from dyeing polyester fibers by thermal fixation using acid-based colors

Exacta ◽  
2011 ◽  
Vol 9 (2) ◽  
pp. 241-250
Author(s):  
Ronaldo Shiguemi Fujisawa ◽  
Wendell De Queiróz Lamas
Keyword(s):  
Water Consumption ◽  
Water Reuse ◽  
Low Cost ◽  
Seat Belt ◽  
Effluent Treatment ◽  
Dyeing Process ◽  
Polyester Fibers ◽  
Viability Study ◽  
Great Economy ◽  
Initial Results

This paper presents the viability study of water reuse in the seat belt webbing dyeing process, reaching a great economy in the water consumption since the textile operation uses a great amount of water. To achieve this goal, it was tested several products during the effluent treatment that contains biodegradable characteristics and greater efficiency to remove color, also attending to effective legislation and low cost expectation. Using these new products, water consumption was reduced approximately 59% in a month and effluent treatment around 30%. Based on these initial results, is expected to have a payback in approximately five months.

Textile wastewater treatment using low-cost adsorbent aiming the water reuse in dyeing process

2018 ◽  
Vol 6 (2) ◽  
pp. 2705-2712 ◽  
Author(s):  
Tarcísio W. Leal ◽  
Luís A. Lourenço ◽  
Ana S. Scheibe ◽  
Selene M.A. Guelli U. de Souza ◽  
Antônio A. Ulson de Souza
Keyword(s):  
Wastewater Treatment ◽  
Water Reuse ◽  
Low Cost ◽  
Textile Wastewater ◽  
Dyeing Process ◽  
Textile Wastewater Treatment

Improving quality of life for dialysis patients through telecare

2000 ◽  
Vol 6 (1_suppl) ◽  
pp. 80-83 ◽  
Author(s):  
Karl A Stroetmann ◽  
Peter Gruetzmacher ◽  
Veli N Stroetmann
Keyword(s):  
Quality Of Life ◽  
Low Cost ◽  
Video Communication ◽  
Daily Routine ◽  
Dialysis Patients ◽  
Home Dialysis ◽  
Service Support ◽  
Initial Results ◽  
Selection Of

Home dialysis can improve the care and quality of life for patients with renal failure. We have explored the possibility of extending home care to more patients needing continuous ambulatory peritoneal dialysis (CAPD) using telemedicine. We tested videoconferencing support for five CAPD patients using low-cost ISDN equipment (128 kbit/s). Initial results indicated that it was possible to integrate video-communication into the daily routine of the clinic and the response from patients was surprisingly positive. Selection of appropriate, affordable technology and the ISDN service support by the telecommunications provider proved to be considerably more difficult than anticipated. The first indications also suggest medical advantages for home teledialysis.

Performance and Water Consumption of the Solar Steam-Injection Gas Turbine Cycle

2012 ◽  
Vol 135 (1) ◽  
Author(s):  
Maya Livshits ◽  
Abraham Kribus
Keyword(s):  
Gas Turbine ◽  
Water Consumption ◽  
Power Plants ◽  
Solar Power ◽  
Low Cost ◽  
Steam Injection ◽  
Water Recovery ◽  
Solar Power Plants ◽  
Improved Model ◽  
Hybrid Cycle

Solar heat at moderate temperatures around 200 °C can be utilized for augmentation of conventional steam-injection gas turbine power plants. Solar concentrating collectors for such an application can be simpler and less expensive than collectors used for current solar power plants. We perform a thermodynamic analysis of this hybrid cycle, focusing on improved modeling of the combustor and the water recovery condenser. The cycle's water consumption is derived and compared to other power plant technologies. The analysis shows that the performance of the hybrid cycle under the improved model is similar to the results of the previous simplified analysis. The water consumption of the cycle is negative due to water production by combustion, in contrast to other solar power plants that have positive water consumption. The size of the needed condenser is large, and a very low-cost condenser technology is required to make water recovery in the solar STIG cycle technically and economically feasible.

scholarly journals Analysis of the Fee-to-Tax Reform on Water Resources in China

2021 ◽  
Vol 9 ◽  
Author(s):  
Zi-Rui Chen ◽  
Yuan Yuan ◽  
Xu Xiao
Keyword(s):  
Water Resources ◽  
Water Resource ◽  
Water Consumption ◽  
Tax Reform ◽  
Low Cost ◽  
Production Capacity ◽  
Cost Difference ◽  
Tax Rate ◽  
Leading Position ◽  
The Cost

The Resource Tax Law was officially implemented on September 1, 2020, in China. This law presents the “Fee-to-Tax” reform of water resources. This article compares the effects of the “Fee-to-Tax” reform under asymmetric duopoly conditions with perfect information. The mechanisms of the two policies are different when all firms simultaneously respond to water resources: the water resource fee affects output by reducing market size, while the water resource tax reduces output by amplifying the weighted cost difference effects between companies. Water resource taxes work better than fees for eliminating backward production capacity. A comparison of the situation when companies respond sequentially is also carried out. When a low-cost firm is in the leading position, the collection of fees actually reduces the output difference, whereas the tax improves it. When a high-cost firm acts as a leader, the effects depend on the cost difference. When the cost difference between firms is small, the first-move advantage of high-cost firms dominates the cost advantages of low-cost firms. Therefore, a higher tax rate yields a smaller output difference. When cost differences are relatively larger, the cost advantage of low-cost firms dominates the first-move advantage of high-cost firms. As the operational cost for reducing water consumption increases, the reduced water consumption first increases and then decreases.

scholarly journals Low Cost Instrumentation for Electrical Impedance Tomography in Biomedical Applications

2015 ◽  
Author(s):  
Stewart Smith ◽  
Hancong Wu ◽  
Jiabin Jia
Keyword(s):  
Electrical Impedance Tomography ◽  
Integrated Circuit ◽  
Biomedical Applications ◽  
Electrical Impedance ◽  
Low Cost ◽  
Impedance Measurement ◽  
Impedance Tomography ◽  
Impedance Measurements ◽  
Additional Circuitry ◽  
Initial Results

This poster reports the design, implementation and testing of a portable and inexpensive bio-impedance measurement system intended for electrical impedance tomography (EIT) in cell cultures. The system is based on the AD5933 impedance analyser integrated circuit with additional circuitry to enable four-terminal measurement. Initial results of impedance measurements are reported along with an EIT image reconstructed using the open source EIDORS package.

scholarly journals Reducing Energy and Water Consumption in Textile Dyeing Industry with Cleaner Production by Inlet-Outlet Modification to Reuse Wastewater

2021 ◽  
Vol 58 (S) ◽  
pp. 49-58
Author(s):  
Erkata Yandri ◽  
Rinaldi Idroes ◽  
Roy Hendroko Setyobudi ◽  
Carolus Boromeus Rudationo ◽  
Satriyo Krido Wahono ◽  
...  
Keyword(s):  
Water Consumption ◽  
Initial Conditions ◽  
Cleaner Production ◽  
Second Step ◽  
Similar Action ◽  
The Third ◽  
Dyeing Process ◽  
Modification Process ◽  
Textile Dyeing ◽  
Process Wastewater

Dyeing Finishing (DF) textile industries which consume a lot of energy, chemicals, water, etc., then produce a lot of wastewater which creates significant environmental problems, can be anticipated by applying Cleaner Production. This paper is presented to discuss the technical modification process of dyeing production machines, which reuse process wastewater to save water and energy consumption in the production process. For that reason, there are three steps taken. First, understand the process flow of the textile dyeing industry. Second, understand in detail the dyeing process of the Jet Dyeing (JD) machine. Third, implement steps on the floor, focusing on the JD machine, starting from the initial conditions until the third step. As a result, savings in water consumption per day for 10 JD machines were achieved by almost 50 %, with details; at the initial status 700 000 L, 600 000 L in the first step, 430 000 L in the second step, and finally 400 000 L in the third step. A similar action can be carried out in other processes, such as washing, de-sizing, or in other industries which also consume a lot of water and energy.

Autonomous Light Assessment Drone for Dark Skies Studies

2020 ◽  
Author(s):  
Matthew N. Goodell ◽  
Takara E. Truong ◽  
Stephanie R. Marston ◽  
Brett J. Smiley ◽  
Elliot R. Befus ◽  
...  
Keyword(s):  
Low Cost ◽  
Field Tests ◽  
Global Scale ◽  
Local Scale ◽  
Light Pollution ◽  
Artificial Light ◽  
Remote Site ◽  
Improper Use ◽  
Initial Results

Abstract The improper use of artificial light causing skyglow is detrimental to many types of wildlife and can potentially cause irregular human sleeping patterns. Studies have been performed to analyze light pollution on a global scale. However, light pollution data on a local scale is not of ten available and the effects at local scale have rarely been studied. Herein, a new custom-designed autonomous light assessment drone (ALAD) is described for evaluating light pollution at local scale. The ALAD is designed and equipped with a sky quality meter (SQM) to measure skyglow and a low-cost illuminance sensor to measure light from artificial sources. Outdoor field tests are performed at a remote site in central Utah and the measured results are validated against data from lightpollution-map.info. The SQM measurements are in agreement with the estimates from the light pollution map, and the initial results demonstrate feasibility of the ALAD for local-scale skyglow assessment.

scholarly journals Facile and low-cost synthesis of pure hematite (α-Fe2O3) nanoparticles from naturally occurring laterites and their superior adsorption capability towards acid-dyes

RSC Advances ◽  
2019 ◽  
Vol 9 (37) ◽  
pp. 21249-21257 ◽  
Author(s):  
D. M. S. N. Dissanayake ◽  
M. M. M. G. P. G. Mantilaka ◽  
T. C. Palihawadana ◽  
G. T. D. Chandrakumara ◽  
R. T. De Silva ◽  
...  
Keyword(s):  
High Purity ◽  
Low Cost ◽  
Effluent Treatment ◽  
Fe2o3 Nanoparticles ◽  
Acid Dyes ◽  
Hematite Nanoparticles ◽  
Naturally Occurring ◽  
Adsorption Capability

High purity hematite nanoparticles have been synthesized by a facile method using naturally occurring laterites for industrial dye effluent treatment applications.

scholarly journals Design and development of a novel acoustic rain sensor with automated telemetry

2018 ◽  
Vol 201 ◽  
pp. 03003
Author(s):  
Maria Leonora Guico ◽  
Gemalyn Abrajano ◽  
Prince Aldrin Domer ◽  
Jose Paulo Talusan
Keyword(s):  
Low Cost ◽  
Data Retrieval ◽  
Mobile Internet ◽  
Time Interval ◽  
Time Data ◽  
Tropical Regions ◽  
Recorded Sound ◽  
Measuring Devices ◽  
The Impact ◽  
Initial Results

This paper presents the recent results of the design of a novel acoustic rainfall sensing system that is low-cost, portable, and easily deployable, which makes use of the recorded sound produced by the impact of the raindrops on the sensor surface. The sensor design allows the gathering of acoustic signal power and sending it to a server after a specified time interval, either through SMS or mobile internet connection. It exists in a weather-proof, standard-conformant, standalone system with its own power supply and telemetric capabilities. These acoustic point sensors can gather rainfall data at high spatial and temporal resolutions. Such deployments can show the variations of rainfall intensities in sub-kilometer areas, particularly in the tropical regions. Since it is low-cost, it can also improve the density of rainfall measuring devices in an area. Moreover, the reliability is improved by providing near-real time data, as opposed to tipping buckets with manual data retrieval. The prototype sensor system was placed next to standard rain measuring devices and observed during the rainy season. The paper will discuss the design and deployment of the system, as well as initial results of data analysis and comparison with standard rain measuring devices.

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