Physiological and biomolecular interventions in the bio-decolorization of Methylene blue dye by Salvinia molesta D. Mitch.

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Debabrata Dolui, Abir Das, Mirza Hasanuzzaman, Malay Kumar Adak
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Abstract

Methylene blue, a cationic dye as a pollutant is discharged from industrial effluent into aquatic bodies. The dye is biomagnified through the food chain and is detrimental to the sustainability of aquatic flora. Despite of number of physico-chemical techniques of dye removal, the use of aquatic flora for bio-adsorption is encouraged. Thus, we used Salvinia molesta D. Mitch in bio-reduction of methylene blue on concentrations of 0, 10, 20, and 30 mg L-1 through 5 days with biosorption kinetics. The dye removal was concentration-dependent, maximized at 2 days with 30 mg L-1 which altered the relative growth rate (44%) of plants. Biosorption recorded 71% capacity at optimum pH (8.0), 24 h reducing major bond energies of amide, hydroxyl groups, etc. Bioaccumulation of dye changed potassium content (446%) under maximum dye concentration modifying tissues for dye sequestration. Reactive oxygen species were altered on dye reduction by oxidase (33%) with redox homeostasis by enzymes. Plants altered the metabolism with over accumulation of polyamines (51%), abscisic acids (448%), and phosphoenolpyruvate carboxylase (83%) on dye reduction. Thus, this study is rationalized with a sustainable approach where aquatic ecosystems can be decontaminated from dye toxicity with the exercise of bioresources like Salvinia molesta D. Mitch as herein.

Salvinia molesta D. Mitch 对亚甲基蓝染料生物脱色的生理和生物分子干预。
亚甲基蓝是一种阳离子染料,作为污染物从工业废水中排入水体。这种染料通过食物链产生生物放大作用,不利于水生植物群的可持续发展。尽管有许多去除染料的物理化学技术,但利用水生植物群进行生物吸附的做法仍受到鼓励。因此,我们利用米氏沙参(Salvinia molesta D. Mitch)对浓度为 0、10、20 和 30 mg L-1 的亚甲基蓝进行了为期 5 天的生物吸附动力学研究。染料去除率与浓度有关,在 30 毫克/升的条件下,2 天达到最大值,这改变了植物的相对生长率(44%)。在最佳 pH 值(8.0)、24 小时内降低酰胺基、羟基等主要键能的情况下,生物吸附容量为 71%。在最大染料浓度下,染料的生物累积改变了钾的含量(446%),改变了组织对染料的吸收。氧化酶还原染料时,活性氧物种发生了变化(33%),同时酶的氧化还原平衡也发生了变化。在染料还原过程中,植物改变了新陈代谢,多胺(51%)、脱落酸(448%)和磷酸烯醇丙酮酸羧化酶(83%)过度积累。因此,本研究采用了一种可持续的方法,即利用生物资源(如本研究中的 Salvinia molesta D. Mitch)来净化水生生态系统,使其免受染料毒性的影响。
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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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