scholarly journals Water footprint calculation and assessment of viscose textile

2020 ◽  
Vol 71 (01) ◽  
pp. 33-40 ◽  
Author(s):  
JUXIANG ZHU ◽  
YIDUO YANG ◽  
YI LI ◽  
PINGHUA XU ◽  
LAILI WANG
Keyword(s):  
Water Footprint ◽  
Viscose Textile ◽  
Environmental Load ◽  
Water Acidification ◽  
Textile Production ◽  
Spinning Process ◽  
Standardization Organization ◽  
Polygon Method ◽  
Water Eutrophication ◽  
Lca Results

Water footprint standards established by the International Standardization Organization (ISO), this paper proposed a newquantitative indicator for water alkalization, and calculated the water footprints involved in viscose textile production. Inaddition, water footprint accounting results were comprehensively evaluated by LCA polygon method which wasdeveloped to interpret LCA results. Results showed that: (1) water scarcity footprint of viscose textile production was60.511 m3H2O eq/ton, of which 85.71% was from the viscose fiber production; (2) water eutrophication footprint ofviscose textile production was 12.439 kg PO43–eq/ton, the major contribution (84.37%) was given by COD and BOD5;(3) water acidification footprint and water alkaline footprint of viscose textile production were 81.453 kg SO2eq/ton and55.675 kg OH–eq/ton, mainly due to H2SO4and NaOH input during the spinning process, respectively; (4) waterecotoxicity footprint of viscose textile production was 3828.169 km3H2O eq/ton, mainly derived from Zn2+in spinningwastewater; (5) LCA polygon analyses showed that environmental load in the spinning was the largest, followed by thepulping and then the dyeing.Keywords:viscose textile, wa

Carbon footprint and water footprint assessment of virgin and recycled polyester textiles

2021 ◽  
pp. 004051752110062
Author(s):  
Weiran Qian ◽  
Xiang Ji ◽  
Pinghua Xu ◽  
Laili Wang
Keyword(s):  
Production Process ◽  
Environmental Impacts ◽  
Carbon Footprint ◽  
Water Scarcity ◽  
Water Footprint ◽  
Oxygen Demand ◽  
Polyester Fabric ◽  
Total Carbon ◽  
Fabric Production ◽  
Water Eutrophication

Recycled polyester textile fibers stemming from waste polyester material have been applied in the textile industry in recent years. However, there are few studies focusing on the evaluation and comparison of the environmental impacts caused by the production of virgin polyester textiles and recycled polyester textiles. In this study, the carbon footprint and water footprint of virgin polyester textiles and recycled polyester textiles were calculated and compared. The results showed that the carbon footprint of the virgin polyester textiles production was 119.59 kgCO2/100 kg. Terephthalic acid production process occupied the largest proportion, accounting for 45.83%, followed by polyester fabric production process, ethylene production process, paraxylene production process, ethylene glycol production process and polyester fiber production process. The total carbon footprint of waste polyester recycling was 1154.15 kgCO2/100 kg, approximately ten times that of virgin polyester textiles production. As for the water footprint, it showed that virgin polyester fabric production and recycled polyester fabric production both had great impact on water eutrophication and water scarcity. Chemical oxygen demand caused the largest water eutrophication footprint, followed by ammonia-nitrogen and five-day biochemical oxygen demand. The water scarcity footprint of virgin polyester fabric production and recycled polyester fabric production was 5.98 m3 H2Oeq/100 kg and 1.90 m3 H2Oeq/100 kg, respectively. The comprehensive evaluation of carbon footprint and water footprint with the life cycle assessment polygon method indicated that the polyester fabric production process exhibited greater environmental impacts both for virgin polyester and recycled polyester.

scholarly journals Water footprint assessment of viscose staple fiber garments

2021 ◽  
Author(s):  
Weiran Qian ◽  
Juxiang Zhu ◽  
Fangli Chen ◽  
Xiang Ji ◽  
Xiaopeng Wang ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Resource ◽  
Water Consumption ◽  
Textile Industry ◽  
Water Footprint ◽  
Control Method ◽  
Environmental Load ◽  
Staple Fiber ◽  
Wastewater Discharge ◽  
Finishing Processes

Abstract The viscose fiber industry forms a large part of the textile industry and is a typical water consumption and wastewater discharge industry. As a tool to quantify environmental impacts in terms of water resources, the water footprint assessment (WFA) is a control method for the textile and apparel industry to measure water consumption and wastewater discharge. In this study, the water footprints of viscose staple fiber blouses and blended men's suits were comprehensively evaluated based on the ISO 14046 standard and the life cycle assessment (LCA) polygon method. The WFA results from our study indicate that the production stage of viscose staple fiber garments has the most significant water resource environmental load. Specifically, the water footprint related to the production of viscose staple fiber for three types of clothing accounted for more than 50% of the total water footprint, with men's 100% viscose staple fiber suits having the largest impact on water resources and the environment. Furthermore, our results indicate that the water alkaline footprint is primarily influenced by the viscose staple fiber production as well as the dyeing and finishing processes. NaOH and Na2CO3 are the main pollutants that caused the water alkaline footprint. In addition, the water ecotoxicity footprint was the major driving factor of water resource environmental load. Zn2+ is the main pollutant that caused the water ecotoxicity footprint.

Development of a novel process-level water footprint assessment for textile production based on modularity

2021 ◽  
Vol 291 ◽  
pp. 125884 ◽  
Author(s):  
Xin Li ◽  
Jie Ren ◽  
Zhaoshan Wu ◽  
Xiongying Wu ◽  
Xuemei Ding
Keyword(s):  
Water Footprint ◽  
Textile Production ◽  
Process Level

REDUCING THE ENVIRONMENTAL LOAD OF THE URBAN AREA DUE TO MINIMIZING THE IMPACT OF FREIGHT TRANSPORT

2020 ◽  
Vol 70 (3) ◽  
pp. 97-106
Author(s):  
S.N. GLAGOLEV ◽  
◽  
A.G. SHEVTSOVA ◽  
V.V. VASILEVA ◽  
◽  
...  
Keyword(s):  
Urban Area ◽  
Freight Transport ◽  
Environmental Load ◽  
The Impact

Temporal Trends in Greenhouse Gas Emissions, Water Footprint, and Ecological Footprint of Food Purchases in Brazilian Metropolitan Areas From 1987 to 2017

2020 ◽  
Author(s):  
Jacqueline Tereza da Silva ◽  
Josefa Maria Felleger Garzillo ◽  
Fernanda Rauber ◽  
Alana Marielle Rodrigues Gald Kluczkovski ◽  
Ximena Schmidt ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Ecological Footprint ◽  
Water Footprint ◽  
Metropolitan Areas ◽  
Temporal Trends ◽  
Gas Emissions ◽  
Food Purchases

Assessment of Water Footprint in Selected Crops: A State Level Appraisal

2017 ◽  
Vol 1 (1) ◽  
pp. 11-25
Author(s):  
Mohammad Suhail
Keyword(s):  
Water Use ◽  
Water Footprint ◽  
Large Fraction ◽  
State Level ◽  
Soil Survey ◽  
National Bureau ◽  
Blue Water ◽  
Total Water Consumption ◽  
Balanced Approach ◽  
Green Component

Every commodity or goods has intake of water i.e. either in processing or furnished stage. Thus, the present study propensities macro-level (states-level) water footprint (WFP) assessment of selected eight crops namely, Wheat, Barley, Maize, Millets, Rice, Sorghum, Soybeans and Tea. The aim of present research is to assess water use in selected crops at field level. In addition, the spatial evaluation at state level also considered as one of the significant objective to understand regional disparity and/or similarly. Methodology and approach of assessment was adopted from Water Footprint Assessment Manual (2011). Data was collected from state Agricultural Directorate, National Bureau of Soil Survey and landuse, published reports and online database such as FAOSTAT, WMO, WFN, and agriculture census. Results show that green component of WFP contributes large fraction as about 72 percent, while blue and grey component amounted of about 19 and 9 percent of the total water consumption, respectively. Moreover, spatial variability of blue, green and grey among the states assimilated by soil regime and climate barriers. Supply of blue water is high where the region imparted to semi-arid or arid land. Consequently, a balanced approach between green and blue water use has been recommended in the present study to address increasing water demand in the future.

The effects of surcharged manholes on the travel time and dispersion of solutes in sewer systems

1995 ◽  
Vol 31 (7) ◽  
pp. 51-59 ◽  
Author(s):  
Ian Guymer ◽  
Rob O'Brien
Keyword(s):  
Travel Time ◽  
Moment Method ◽  
In Situ Measurements ◽  
Time Change ◽  
Longitudinal Dispersion ◽  
Laboratory System ◽  
Environmental Load ◽  
Hydraulic Characteristics ◽  
Sewer Systems

Previously, the design of sewer systems has been limited to studies of their hydraulic characteristics, in particular the ability of the system to convey the maximum discharge. Greater environmental awareness has necessitated that new designs, and some existing schemes, are assessed to determine the environmental load which the scheme will deliver to any downstream component. This paper describes a laboratory programme which has been designed to elucidate the effects of manholes on the longitudinal dispersion of solutes. A laboratory system is described, which allows in situ measurements to be taken of the concentration of a fluorescent solute tracer, both up- and down-stream of a surcharged manhole junction. Results are presented from a preliminary series of studies undertaken for a single manhole geometry over a range of discharges, with varying levels of surcharge. Results are presented showing the variation of travel time, change in second moment of the distribution and of a dispersion factor with surcharge, assuming a Taylor approach and determining the dispersion factor using a ‘change in moment’ method. The effect of the stored volume within the manhole is clearly evident. The limitations and the applicability of this approach are discussed.

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