Panda Sanjay Kumar Bhikari Charan, Sen Kushal, Mukhopadhyay Samrat
Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
ACS Omega. 2023 May 15;8(21):18726-18734. doi: 10.1021/acsomega.3c00713. eCollection 2023 May 30.
Textile wet processing highly impacts the environment due to its massive water and energy consumption. High consumption of water also results in the generation of a considerable volume of effluents. In this regard, an ultraviolet C (UVC)-assisted desizing method of starch-sized cotton fabric has been developed to lower the utility consumption in textile pretreatment. A UVC cabinet is designed to control exposing temperature and energy of exposure on the starch-sized cotton fabric. The UVC exposure time is optimized concerning the desizing efficiency. The UVC-exposed-sized fabric is washed with different washing times and washing temperatures to optimize the process. The alkali consumption in washing is reduced by 75% and desizing efficiency is improved to 95%. The application of oxidizing agents like NaNO, KSO, and NaBO·4HO during sizing further reduced the washing temperature and washing time for desizing to obtain 100% desizing efficiency. The UVC-assisted desized fabric is characterized by the whiteness index, water absorbency, tensile strength, Fourier transform infrared (FTIR), and wide-angle X-ray diffraction and compared with the control. The UVC-assisted desizing process has the potential to save approximately 60% water, 90% energy, and more than 70% of the time. Life cycle analysis has also been done. The photocatalytic desizing process can reduce the impact on human health by more than 85% and save approximately 69% of mineral resources than the conventional technique. The textile industry can quickly adopt a novel approach for sustainable desizing.
纺织品湿加工因其大量的水和能源消耗而对环境产生重大影响。高耗水量还导致产生大量废水。在这方面，已开发出一种紫外线C（UVC）辅助的淀粉上浆棉织物退浆方法，以降低纺织品预处理中的公用事业消耗。设计了一个UVC箱来控制淀粉上浆棉织物的暴露温度和暴露能量。针对退浆效率优化了UVC暴露时间。对经UVC照射的上浆织物进行不同洗涤时间和洗涤温度的洗涤以优化该工艺。洗涤中的碱消耗量减少了75%，退浆效率提高到了95%。在上浆过程中应用NaNO、KSO和NaBO·4HO等氧化剂进一步降低了退浆的洗涤温度和洗涤时间，以获得100%的退浆效率。通过白度指数、吸水性、拉伸强度、傅里叶变换红外光谱（FTIR）和广角X射线衍射对UVC辅助退浆织物进行表征，并与对照进行比较。UVC辅助退浆工艺有可能节省约60%的水、90%的能源和70%以上的时间。还进行了生命周期分析。与传统技术相比，光催化退浆工艺可将对人类健康的影响降低85%以上，并节省约69%的矿产资源。纺织行业可以迅速采用一种新颖的可持续退浆方法。
