Department of Biotechnology, M.M. Engineering College, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, 133203, India.
Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar, MP, 470003, India.
Chemosphere. 2022 Oct;305:135371. doi: 10.1016/j.chemosphere.2022.135371. Epub 2022 Jun 17.
Discharge of untreated or partially treated toxic dyes containing wastewater from textile industries into water streams is hazardous for environment. The use of heavy metal(s) rich dyes, which are chemically active in azo and sulfur content(s) has been tremendously increasing in last two decades. Conventional physical and chemical treatment processes help to eliminate the dyes from textile wastewater but generates the secondary pollutants which create an additional environmental problem. Microalgae especially the diatoms are promising candidate for dye remediation from textile wastewater. Nanoporous diatoms frustules doped with nanocomposites increase the wastewater remediation efficiency due to their adsorption properties. On the other hand, microalgae with photosynthetic microbial fuel cell have shown significant results in being efficient, cost effective and suitable for large scale phycoremediation. This integrated system has also capability to enhance lipid and carotenoids biosynthesis in microalgae while simultaneously generating the bioelectricity. The present review highlights the textile industry wastewater treatment by live and dead diatoms as well as microalgae such as Chlorella, Scenedesmus, Desmodesmus sp. etc. This review engrosses applicability of diatoms and microalgae as an alternative way of conventional dye removal techniques with techno-economic aspects.
纺织工业未经处理或部分处理的含毒染料废水排放到水流中对环境是有害的。在过去二十年中，富含重金属的染料（在偶氮和硫含量方面具有化学活性）的使用呈指数级增长。传统的物理和化学处理工艺有助于从纺织废水中去除染料，但会产生二次污染物，从而造成额外的环境问题。微藻，特别是硅藻，是从纺织废水中修复染料的有前途的候选物。纳米多孔硅藻壳掺杂纳米复合材料由于其吸附特性，提高了废水修复效率。另一方面，具有光合作用微生物燃料电池的微藻在高效、经济实惠和适合大规模光修复方面表现出显著的效果。该集成系统还具有增强微藻中脂质和类胡萝卜素生物合成的能力，同时产生生物电能。本综述重点介绍了利用活硅藻和死硅藻以及微藻（如小球藻、栅藻、杜氏藻等）处理纺织工业废水。本综述探讨了硅藻和微藻作为传统染料去除技术替代方法的适用性，包括技术经济方面。
