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改造的生物炭减少了藻类残渣污染的沉积物中的营养物质和甲释放

Jiajia Zhang¹, Songhe Zhang¹, Shaozhuang Guo¹

¹Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China.

Environmental research

|January 6, 2025

概括

生物炭有效降低甲排放,并改善沉积物中营养物质的去除. 这项研究表明,生物炭增强了微生物的稳定性,有助于污染沉积物的修复和碳储存.

科学领域:

环境科学环境科学
生物地质化学生物地质化学
微生物生态学微生物生态学

背景情况:

生物煤具有储存碳,控制污染和生物固体再利用的潜力.
水生拥有大量的生物质,并用于湿地中的营养物质去除.
有限的研究存在于基生物炭对沉积物质的影响.

研究的目的:

研究基生物炭 (BC) 和Mn-氧化剂修饰生物炭 (MBC) 对沉积物的营养物质去除和甲 (CH4) 排放流的影响.
分析BC和MBC对CH4度和沉积物中的微生物群落结构的影响.
评估生物炭在污染沉积物的现场整治方面的潜力.

主要方法:

基生物炭 (BC) 和Mn-氧化剂修饰生物炭 (MBC) 的制备.
在20天内化生物炭改性沉积物,以测量营养物质的去除和CH4排放流.
在沉积物中分析CH4度,微生物群落组成 (类级),以及功能基因 (mcrA,pomA).

主要成果:

BC和MBC显著减少了CH4排放流量,分别减少了56.84%和69.95%.
生物炭的应用提高了NH4+-N,TN和TP的营养物质去除率.
生物炭添加促进了物种间的竞争,增加了微生物群落的稳定性,减少了mcrA的丰度,增加了pomA的丰度.

结论:

基于 Reed 的生物炭对污染沉积物的现场补救是有效的.
生物炭应用为碳储存和污染控制提供了一个可行的策略.
与BC.相比,改性生物炭 (MBC) 在CH4减少和营养物质去除方面表现更好.

关键词:

生物炭是一种生物炭.碳代谢碳代谢碳代谢改性生物炭是一种改性生物炭.甲甲是一种微生物社区的微生物社区.

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