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Convince Them
Published in Walter DeGrange, Lucia Darrow, Field Guide to Compelling Analytics, 2022
During the afternoon, Carla sets up a tour of the new manufacturing facility for her team. As they walk through the factory, they note the inputs and outputs of each process, paying particular attention to the resource usage. The full process requires significant energy and water to create the end product, and harmful chemicals used in the dyeing process endanger local waterways. Carla takes note of where data collection is already in place and where it would need to be added to support analysis. After the tour they meet with a group of process engineers that share several options for improving the environmental footprint of their operations: A new filtration system on the market that would allow them to recycle 98 percent of the water used in the production process is found. Unfortunately, this system is expensive to install and would take up the majority of the available funds.Synthetic indigo dye is particularly dangerous and is being released into local waterways. They could implement process changes to increase the amount of dye captured.
Core Eudicots: Dicotyledons IV
Published in Donald H. Les, Aquatic Dicotyledons of North America, 2017
There are numerous economically important species in Fabaceae (Judd et al., 2016). The edible plants include many familiar “legumes” such as beans (Phaseolus), lentils (Lens), peanuts (Arachis), peas (Pisum), and soybeans (Glycine). Several genera (Medicago, Melilotus, Trifolium, Vicia) are important as animal forage crops. The familiar blue indigo dye is derived from Indigofera. Many species are cultivated as garden or ornamental plants. The most notable of these occur in the genera Acacia, Albizia, Anthyllis, Astragalus, Baptisia, Bauhinia, Caragana, Carmichaelia, Cassia, Cercis, Cytisus, Erythrina, Genista, Gleditsia, Glycine, Indigofera, Laburnum, Lathyrus, Lespedeza, Lotus, Lupinus, Medicago, Ononis, Oxytropis, Phaseolus, Pisum, Robinia, Senna, Sophora, Trifolium, Vicia, and Wisteria.
Optimization of dark dyeing poly(lactic acid) yarn with indigo dyes applied to denim fabric
Published in The Journal of The Textile Institute, 2022
Menglei Wu, Yang Chen, Peng Peng, Danying Zuo, Qian Wang, Liu Liu, Shiqin Liao, Changhai Yi
In this paper, three main parameters in the indigo dye system are optimized by orthogonal experiment, and the optimal ratio of indigo, sodium hydrosulfite and sodium hydroxide are determined. On the basis of the optimal ratio, the effect of dye temperature on PLA yarn dyeing is explored, silicone oil is used to support the experiment that the required temperature is more than 100 °C, set the temperature gradient to 45 °C, 60 °C, 70 °C, 80 °C, 90 °C, 100 °C, 110 °C, and 120 °C. To explore the effect of pH of dyeing solution on the dyeing of PLA yarns, and adjust the pH gradient of dyes to 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 by adding glacial acetic acid with droppers. To explore the effect of dyeing time on the dyeing of PLA yarns, set the time gradients to 10 min, 20 min, 30 min, 40 min, 50 min, 60 min, 70 min and 80 min. To explore the effect of dyeing times on PLA yarns, set the gradients of dyeing number to 2 times, 3 times, 4 times and 5 times.