[1]章厚林,罗忠武,周蜜,等.玉米芯/PHB包覆缓释复合碳源强化生物脱氮性能[J].中国给水排水,2026,42(7):51-57.
　ZHANGHoulin,LUOZhongwu,ZHOUMi,et al.Investigation on Enhanced Denitrification Performance of a Slow-release Composite Carbon Source Embedded with Corncob/PHB[J].China Water & Wastewater,2026,42(7):51-57.
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玉米芯/PHB包覆缓释复合碳源强化生物脱氮性能

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第42卷 期数: 2026年第7期 页码: 51-57 栏目: 出版日期: 2026-04-01
Title:
Investigation on Enhanced Denitrification Performance of a Slow-release Composite Carbon Source Embedded with Corncob/PHB
作者:
章厚林1， 罗忠武2， 周蜜1， 邹林志1， 杨智1， 李润佳1， 徐炜谟1， 艾海男1
（1.重庆大学 三峡库区生态环境教育部重点实验室，重庆 400045；2.中建五局第三建设有限公司，湖南 长沙 410004）
Author(s):
ZHANG　Houlin1， LUO　Zhongwu2， ZHOU　Mi1， ZOU　Linzhi1， YANG　Zhi1， LI　Runjia1， XU　Weimo1， AI　Hainan1
（1. Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment ， Chongqing University， Chongqing 400045， China； 2. 3rd Construction Co. Ltd. of China Construction 5th Engineering Bureau， Changsha 410004， China）
关键词:
缓释复合碳源;  玉米芯;  聚-β-羟基丁酸（PHB）;  释碳特性;  强化反硝化
Keywords:
slow-release composite carbon source;  corncob;  poly-β-hydroxybutyrate (PHB);  carbon release characteristics;  enhanced denitrification
摘要:
基于对碳源、骨架和交联剂的优选，采用农业废弃物玉米芯和可生物降解聚合物PHB（聚-β-羟基丁酸）制备了一种新型缓释复合碳源S1，利用清水释碳试验和反硝化脱氮试验考察了S1的性能，并通过分析S1的表面形态、官能团以及浸出液三维荧光光谱揭示其强化脱氮的机理。结果显示，此碳源具有良好的物理特性，平均释碳速率为玉米芯的27.7%，释碳时间t1/2为24.53 h，具有持续的碳源缓释性能；此外，S1能强化微生物反硝化功能，TN累积削减量和平均反硝化速率均优于空白组，脱氮性能良好。原因在于，S1兼具玉米芯和PHB的表面形态特征，使得释碳过程持久、稳定；S1含有大量含氧基团（如羟基），能够有效吸附污染物，且其浸出液中所含碳源的可生化性较高，有利于反硝化过程，最终强化了脱氮性能。
Abstract:
Based on the optimization of carbon sources, skeleton materials, and crosslinking agents, a novel slow-release composite carbon source, designated S1, was developed using agricultural waste corncob and biodegradable polymer PHB (poly-β-hydroxybutyrate). Its performance was evaluated through carbon release tests in clean water and denitrification batch experiments. The mechanism behind its enhanced denitrification was elucidated by analyzing its surface morphology, functional groups, and the three-dimensional fluorescence spectra of the S1 leachate. The results showed that S1 possessed favorable physical properties. It exhibited a sustained carbon release performance, with an average carbon release rate of 27.7% of that of corncob alone and a carbon release half-life (t1/2) of 24.53 h. Furthermore, S1 significantly enhanced the microbial denitrification function, achieving a higher cumulative TN removal and average denitrification rate compared to the blank control group, thus demonstrating excellent denitrification performance. The mechanism analysis revealed that S1 combined the surface morphological characteristics of both corncob and PHB, ensuring a sustained and stable carbon release process. Additionally, the presence of abundant oxygen-containing groups (e.g., hydroxyl) on S1 facilitated effective pollutants adsorption, while the high biodegradability of the carbon source in its leachate promoted the denitrification process, ultimately leading to enhanced nitrogen removal performance.
更新日期/Last Update: 2026-04-01