Effects of different light conditions on ammonium removal in a consortium of microalgae and partial nitrifying granules

硝化作用 硝化细菌 小球藻 光强度 化学 氧气 亚硝酸盐 氮气 环境化学 硝酸盐 核化学 环境工程 植物 小球藻 生物 藻类 环境科学 物理 有机化学 光学
作者
Shinichi Akizuki,Masatoshi Kishi,Germán Cuevas‐Rodríguez,Tatsuki Toda
出处
期刊:Water Research [Elsevier BV]
卷期号:171: 115445-115445 被引量:58
标识
DOI:10.1016/j.watres.2019.115445
摘要

Ammonium removal by a coupling process of microalgae (Chlorella sorokiniana) with partial nitrifying granules was evaluated in batch reactors illuminated in a wide range of light intensities (0, 100, 450, and 1600 μmol photons m-2 s-1). Ammonium oxidation performance for different light exposure time showed that the granules had a light stress tolerance at 1600 μmol photons m-2 s-1 for up to 12 h, but continuous illumination induced severe inhibition on nitrifying bacteria thereafter. Ammonium removal efficiencies at the end of tests were 66%, 62%, 5%, and -10% (due to ammonification) for 0, 100, 450, and 1600 μmol photons m-2 s-1, respectively. The nitrogen mass balance shows co-occurrence of microalgal growth taking up 24% of fed ammonium and nitrifying bacteria oxidizing 38% of fed ammonium at 100 μmol photons m-2 s-1, while both nitrification and microalgal growth are inhibited at light intensity above 450 μmol photons m-2 s-1. In comparing results from this study with previous results, it was found that the ammonium removal pathway, i.e., nitrification or microalgal uptake, is regulated more strongly by daily average light intensity than by instantaneous light intensity. Empirical model equations to estimate the oxygen balance in consortium reactors categorized the effect of daily average light intensities on process performance as follows: (i) below 27 μmol photons m-2 s-1: insufficient oxygen for nitrification; (ii) 27 to 35: sufficient oxygen for nitrification via nitrite; (iii) 35 to 180: sufficient oxygen for nitrification via nitrate; (iv) above approximately 200-300: oversaturated dissolved oxygen, excess free ammonia and/or intensive light inhibitions.
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
刚刚
2秒前
2秒前
2秒前
3秒前
3秒前
4秒前
wanci应助fhl采纳,获得10
5秒前
潺潺流水完成签到,获得积分10
5秒前
6秒前
Akim应助HYI采纳,获得10
7秒前
yyygc完成签到,获得积分10
7秒前
moon发布了新的文献求助30
8秒前
干破天发布了新的文献求助10
8秒前
深情安青应助范冰冰采纳,获得10
8秒前
嗯哼哈哈发布了新的文献求助10
8秒前
8秒前
8秒前
小叶子发布了新的文献求助10
8秒前
澡雪发布了新的文献求助10
9秒前
青山落日秋月春风完成签到,获得积分10
9秒前
10秒前
11秒前
11秒前
12秒前
12秒前
14秒前
烟花应助古月采纳,获得10
14秒前
15秒前
无花果应助无限的绮晴采纳,获得10
15秒前
ZQ666发布了新的文献求助10
15秒前
深情安青应助健康的怡采纳,获得10
15秒前
16秒前
fiore发布了新的文献求助10
16秒前
17秒前
量子星尘发布了新的文献求助10
18秒前
chen同学发布了新的文献求助10
18秒前
Ava应助小叶子采纳,获得10
19秒前
HYI发布了新的文献求助10
21秒前
22秒前
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
Effective Learning and Mental Wellbeing 400
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 3976107
求助须知:如何正确求助?哪些是违规求助? 3520330
关于积分的说明 11202435
捐赠科研通 3256819
什么是DOI,文献DOI怎么找? 1798504
邀请新用户注册赠送积分活动 877642
科研通“疑难数据库(出版商)”最低求助积分说明 806496