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反硝化副球菌-氧化石墨烯微复合材料对水中高浓度N，N-二甲基甲酰胺的高效同步吸附-生物降解

Efficient simultaneous adsorption-biodegradation of high-concentrated N,N-dimethylformamide from water by Paracoccus denitrificans-graphene oxide microcomposites.

作者信息

Zheng Yuan, Chen Dongyun, Li Najun, Xu Qingfeng, Li Hua, He Jinghui, Lu Jianmei

机构信息

College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China.

出版信息

Sci Rep. 2016 Feb 1;6:20003. doi: 10.1038/srep20003.

DOI:10.1038/srep20003
PMID:26829653
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4734327/
Abstract

Water contamination becomes one of the most pervasive environmental issues all over the world in recent years. In this paper, the functionalization of graphene oxide (GO) with copolymers containing methacrylic acid (MAA) and butyl methacrylate (BMA) was investigated to prepare a new microcomposite material (PGO) via free radical solution polymerization. PGO was used for the adsorption of N,N-dimethylformamide (DMF) from aqueous solution by utilizing the characteristics of ultralarge surface and the Van der Waals force between DMF molecules and polymers on the surface of PGO. Besides, PGO was used not only a high-capable adsorbent but also a carrier for the immobilization of Paracoccus denitrificans cells in the treatment of high-concentrated DMF. Bacterial cells could immobilized on the PGO (PGO@P. denitrificans) stably by covalent coupling process after acclimatization and high-concentrated DMF (2000 mg/L) could be removed completely and relatively rapidly from aqueous solutions by the simultaneous adsorption-biodegradation (SAB) process of PGO@P. denitrificans. Furthermore, the excellent recycle performance of PGO@P. denitrificans made the whole process more economical and practical.

摘要

近年来，水污染成为全球最普遍的环境问题之一。本文研究了氧化石墨烯（GO）与含甲基丙烯酸（MAA）和甲基丙烯酸丁酯（BMA）的共聚物的功能化，通过自由基溶液聚合制备了一种新型微复合材料（PGO）。利用PGO超大的表面积以及PGO表面DMF分子与聚合物之间的范德华力，将PGO用于从水溶液中吸附N，N-二甲基甲酰胺（DMF）。此外，PGO不仅用作高效吸附剂，还用作在处理高浓度DMF时固定反硝化副球菌细胞的载体。经过驯化后，细菌细胞可通过共价偶联过程稳定地固定在PGO（PGO@反硝化副球菌）上，并且PGO@反硝化副球菌的同时吸附-生物降解（SAB）过程可从水溶液中完全且相对快速地去除高浓度DMF（2000 mg/L）。此外，PGO@反硝化副球菌出色的循环性能使整个过程更加经济实用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/177d4b934b93/srep20003-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/86179b1c34c9/srep20003-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/de227fb2133f/srep20003-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/87d28dd783e8/srep20003-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/6db343af6ab0/srep20003-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/64eff1e7a4e8/srep20003-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/bd3557f8c3fc/srep20003-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/ef415683be8a/srep20003-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/ad5740a02965/srep20003-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/55adca334dff/srep20003-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/177d4b934b93/srep20003-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/86179b1c34c9/srep20003-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/de227fb2133f/srep20003-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/87d28dd783e8/srep20003-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/6db343af6ab0/srep20003-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/64eff1e7a4e8/srep20003-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/bd3557f8c3fc/srep20003-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/ef415683be8a/srep20003-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/ad5740a02965/srep20003-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/55adca334dff/srep20003-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ea/4734327/177d4b934b93/srep20003-f10.jpg

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