亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Dissolved organic matter transformation mechanisms and process optimization of wastewater sludge hydrothermal humification treatment for producing plant biostimulants

腐殖质 化学 溶解有机碳 腐植酸 有机质 废水 环境化学 有机化学 生物 废物管理 肥料 土壤水分 工程类 生态学
作者
Siying Cai,Yu Zhang,Aibin Hu,Ming Liu,Hanjun Wu,Dongsheng Wang,Weijun Zhang
出处
期刊:Water Research [Elsevier BV]
卷期号:235: 119910-119910 被引量:41
标识
DOI:10.1016/j.watres.2023.119910
摘要

Understanding the composition, transformation and bioactivity of dissolved organic matter (DOM) at the molecular level is crucial for investigating the hydrothermal humification process of wastewater sludge and producing ecological fertilizers. In this study, DOM transformation pathways under alkali–thermal humification treatment (AHT) were characterized by Fourier transform–ion cyclotron resonance mass spectrometry (FT–ICR MS) in conjunction with molecular reaction network analysis. The effects of DOM on plant growth were examined using hydroponics and transcriptomic analysis. In the wastewater sludge humification process, AHT produced maximum amounts of protein (3260.56 mg/L) and humic acid (5788.24 mg/L) after 12 h. FT–ICR MS results indicated that protein-like structures were prone to continuous oxidation and were ultimately transformed into aromatic N-containing compounds resembling humic substances. Several reactive fragments (such as –C2H2O2, –C3H4O2, and –C4H6O2) formed by the Maillard reaction (MR) were identified as potential precursors to humic acid (HA). In terms of biological effects, DOM12h showed the highest rice germination and growth activity, whereas that produced by AHT for a longer period (> 12 h) displayed phytotoxicity owing to the accumulation of toxic substances. Plant biostimulants (such as amino acids and HAs) in DOM improved energy metabolism and carbohydrate storage in rice seedlings by upregulating the “starch and sucrose metabolism” pathways. Toxic substances (such as pyrrole, pyridine, and melanoidin) in DOM can activate cell walls formation to inhibit abiotic stimuli in rice seedlings through the biosynthesis of phenylpropanoid pathway. These findings provide a theoretical basis for optimizing sludge hydrothermal humification and recovering high-quality liquid fertilizers.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
伯赏元彤发布了新的文献求助10
3秒前
NexusExplorer应助科研通管家采纳,获得10
11秒前
FashionBoy应助伯赏元彤采纳,获得10
14秒前
22秒前
23秒前
星河发布了新的文献求助10
27秒前
31秒前
星河完成签到,获得积分10
31秒前
量子星尘发布了新的文献求助10
54秒前
1分钟前
搜集达人应助醉熏的飞薇采纳,获得10
1分钟前
1分钟前
1分钟前
去晒月亮发布了新的文献求助10
1分钟前
1分钟前
汉堡包应助科研通管家采纳,获得10
2分钟前
清爽乐菱应助科研通管家采纳,获得30
2分钟前
Owen应助科研通管家采纳,获得10
2分钟前
量子星尘发布了新的文献求助10
2分钟前
Jasper应助lingduyu采纳,获得10
2分钟前
从容芮给xiahou的求助进行了留言
3分钟前
3分钟前
量子星尘发布了新的文献求助10
3分钟前
3分钟前
酷炫的一笑完成签到,获得积分10
3分钟前
lingduyu发布了新的文献求助10
3分钟前
Kevin发布了新的文献求助10
3分钟前
lingduyu完成签到,获得积分10
4分钟前
juan完成签到 ,获得积分10
5分钟前
5分钟前
量子星尘发布了新的文献求助10
5分钟前
5分钟前
清爽乐菱应助科研通管家采纳,获得30
6分钟前
6分钟前
6分钟前
刘刘完成签到 ,获得积分10
6分钟前
7分钟前
7分钟前
量子星尘发布了新的文献求助10
7分钟前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976675
求助须知:如何正确求助?哪些是违规求助? 3520770
关于积分的说明 11204814
捐赠科研通 3257550
什么是DOI,文献DOI怎么找? 1798733
邀请新用户注册赠送积分活动 877897
科研通“疑难数据库(出版商)”最低求助积分说明 806629