同时脱硫化和反硝化:一种处理轮胎橡胶和含硝酸盐废水的新方法

IF 3.1 4区 生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Tercan Çataklı, Tuba Hande Erguder
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引用次数: 0

摘要

研究了一种通过同时脱硫和反硝化的方法对轮胎磨砂橡胶(GTR)和含硝酸盐废水进行增值的新方法。最初,硫基自养反硝化菌成功地从三种不同的种子污泥来源,生物营养物去除(BNR)污泥,厌氧消化污泥和皮革组织工业区污水处理厂的BNR污泥中富集。平均硝酸盐去除率为96 ~ 98%。后来用这些富集的培养物研究了GTR的生物脱硫化(生物脱硫化)。结果表明,皮革组织工业区污水处理厂BNR污泥富集培养物可实现生物脱硫,脱硫效率为3.9%;推测金属硫酸盐的沉淀会导致对脱硫比的低估。傅里叶变换红外光谱(FTIR)结果表明,处理后的GTR样品中C-S键强度降低,S-O键强度增加。这归因于硫化交联的氧化,即生物脱硫的验证。该研究表明,生物脱硝技术是一种很有前途的工艺,可以同时处理GTR和含硝酸盐废水,从而支持循环经济和可持续发展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Simultaneous devulcanization and denitrification: a novel approach for valorization of both ground tire rubber and nitrate-containing wastewater

Simultaneous devulcanization and denitrification: a novel approach for valorization of both ground tire rubber and nitrate-containing wastewater

This study focused on a new approach for valorization of both ground tire rubber (GTR) and nitrate-containing wastewater via simultaneous devulcanization and denitrification. Initially, sulfur-based autotrophic denitrifiers were successfully enriched from three different seed sludge sources, biological nutrient removal (BNR) sludge, anaerobic digester sludge and BNR sludge of a leather organized industrial zone WWTP. Average nitrate removal efficiencies were 96–98%. Biological devulcanization (biodevulcanization) of GTR was later investigated with these enriched cultures. Results revealed that biodevulcanization was only achieved with the culture enriched from BNR sludge of the leather organized industrial zone WWTP, as 3.9% sulfur removal (desulfurization efficiency). Metal sulfate precipitation was speculated to cause an underestimation of the desulfurization ratio. Fourier-transform infrared spectroscopy (FTIR) results demonstrated a decrease in the intensity of the C–S bonds and an increase in intensity of S–O bonds in treated GTR samples. This was attributed to the oxidation of sulfidic crosslinks, i.e. verification of biodevulcanization. This study indicated that simultaneous biodevulcanization and denitrification could be a promising process for valorization of both GTR and nitrate-containing wastewater which in turn would support circular economy and sustainable development.

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来源期刊
Biodegradation
Biodegradation 工程技术-生物工程与应用微生物
CiteScore
5.60
自引率
0.00%
发文量
36
审稿时长
6 months
期刊介绍: Biodegradation publishes papers, reviews and mini-reviews on the biotransformation, mineralization, detoxification, recycling, amelioration or treatment of chemicals or waste materials by naturally-occurring microbial strains, microbial associations, or recombinant organisms. Coverage spans a range of topics, including Biochemistry of biodegradative pathways; Genetics of biodegradative organisms and development of recombinant biodegrading organisms; Molecular biology-based studies of biodegradative microbial communities; Enhancement of naturally-occurring biodegradative properties and activities. Also featured are novel applications of biodegradation and biotransformation technology, to soil, water, sewage, heavy metals and radionuclides, organohalogens, high-COD wastes, straight-, branched-chain and aromatic hydrocarbons; Coverage extends to design and scale-up of laboratory processes and bioreactor systems. Also offered are papers on economic and legal aspects of biological treatment of waste.
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