Abstract

With the current environmental concern on water waste related issues, there is a need to make aware of disposal wastewater safely and beneficially. This effluent can be used for agricultural purpose and it could be an important step for consideration of disposal in a proper way, treated and planned. The local studies are essential and needed to determine the quality of effluent in order to keep no loss in crop yields, soil and ground level water deterioration. Peroxidases have a wide potential in bioremediation of wastewater polluted with phenol derivatives, industrial effluents, decolourization of synthetic and natural dyes, elimination of endocrine disruptive chemicals, degradation of herbicides and pesticides, chlorinated dioxins, chlorinated alkanes and alkenes, polychlorinated biphenyls and chlorinated insecticides. Nowadays, the interest is preoccupied on nanozymes having peroxidase mimicking activities owing to their encouraging and favorable wide applications in biosensing, bioimaging and biomedicine. Brassica oleracea (broccoli) is a rich peroxidase source having activity 1.35 U/mL. UV-visible analysis and cyclovoltametric studies indicated that CeO₂ NPs can substitute peroxidase under optimized conditions. CeO₂ NPs efficiently oxidized α-naphthol, β-naphthol, anthracene and naphthalene with less oxidation potential respectively compared to peroxidase. On treatment of water effluent with peroxidase the value of BOD, COD and turbidity comes out to be 36, 60 mg/L and 10.03 NTU respectively. On treatment of water effluent with CeO₂ NPs the value of BOD, COD and turbidity where lower and found to be 18, 28 mg/L and 5.4 NTU respectively. The result indicates that nanozyme efficiently degrades the phenolic and other aromatic compounds present in the waste distillery water discharged.CeO₂ NPs behave as a catalyst by boosting the peroxidase activity twice. This preliminary study demonstrated that nanoparticle treatment of wastewater is more effective than enzymatic treatment and its use will be a cost-effective substitute to conventional technologies in India.

中文翻译：

---

基于CeO2纳米粒子的氧化还原酶仿生系统

摘要

由于当前对水废物相关问题的环境关注，有必要了解安全和有益地处理废水。这种流出物可用于农业目的，它可能是考虑以适当方式、处理和计划处置的重要步骤。当地研究是必不可少的，需要确定污水的质量，以防止作物产量损失、土壤和地表水恶化。过氧化物酶在生物修复苯酚衍生物、工业废水、合成和天然染料脱色、消除内分泌干扰化学品、降解除草剂和杀虫剂、氯化二恶英、氯化烷烃和烯烃、多氯联苯和氯化杀虫剂等方面具有广泛的潜力。如今，甘蓝（西兰花）是一种丰富的过氧化物酶来源，活性为 1.35 U/mL。紫外可见分析和循环伏安研究表明，CeO ₂ NPs 在优化条件下可以替代过氧化物酶。与过氧化物酶相比， CeO ₂ NPs 有效地氧化了α-萘酚、β-萘酚、蒽和萘，分别具有较小的氧化电位。用过氧化物酶处理出水后，BOD、COD和浊度值分别为36、60 mg/L和10.03 NTU。_{用CeO 2}处理出水NPs BOD、COD 和浊度的值较低，发现分别为 18、28 mg/L 和 5.4 NTU。结果表明，纳米酶可以有效降解废水中存在的酚类和其他芳香族化合物。CeO ₂ NPs 通过两次提高过氧化物酶活性而起到催化剂的作用。这项初步研究表明，废水的纳米颗粒处理比酶处理更有效，并且它的使用将成为印度传统技术的具有成本效益的替代品。