Response of algal-bacterial granular system to low carbon wastewater: Focus on granular stability, nutrients removal and accumulation

Ziwen Zhao; Xiaojing Yang; Wei Cai; Zhongfang Lei; Kazuya Shimizu; Zhenya Zhang; Motoo Utsumi; Duu-Jong Lee

doi:10.1016/j.biortech.2018.07.114

Response of algal-bacterial granular system to low carbon wastewater: Focus on granular stability, nutrients removal and accumulation

Ziwen Zhao
, Xiaojing Yang
, Wei Cai
, Zhongfang Lei^*
, Kazuya Shimizu
, Zhenya Zhang
, Motoo Utsumi
, Duu-Jong Lee

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

110 Citations (Scopus)

Abstract

The effect of influent chemical oxygen demand to nitrogen (COD/N) ratio on the granular stability, nutrients removal and accumulation of the algal-bacterial AGS was investigated. Two sequencing batch reactors were operated under different influent COD/N ratio, i.e., R₁ (control, COD/N = 8) and R₂: (COD/N = 8, 4, 2, and 1 through stepwise decrease of COD). Results showed that the integrity coefficient of the granules in R₂ stabilized at 0.7–5.4% during the whole operation. Significantly enhanced dissolved inorganic carbon (DIC) uptake and the faster growth of algae indicated the great potential for reduction in greenhouse gases (GHGs) emission by using the algal-bacterial AGS system. The algal-bacterial AGS biomass contained high phosphorus (P) and N contents as well as extremely high P bioavailability (up to 98%) which could be easily used for resource recovery. Loosely bound extracellular polymeric substances (LB-EPS) might be the key factor to control the deterioration of granular stability in this system.

Original language	English
Pages (from-to)	221-229
Journal	Bioresource Technology
Volume	268
DOIs	https://doi.org/10.1016/j.biortech.2018.07.114
Publication status	Published - 1 Nov 2018
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation
SDG 13 Climate Action

Research Keywords

Algal-bacterial aerobic granular sludge (AGS)
Granular stability
Low carbon wastewater
Nutrients accumulation
Nutrients removal

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10.1016/j.biortech.2018.07.114

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title = "Response of algal-bacterial granular system to low carbon wastewater: Focus on granular stability, nutrients removal and accumulation",

abstract = "The effect of influent chemical oxygen demand to nitrogen (COD/N) ratio on the granular stability, nutrients removal and accumulation of the algal-bacterial AGS was investigated. Two sequencing batch reactors were operated under different influent COD/N ratio, i.e., R1 (control, COD/N = 8) and R2: (COD/N = 8, 4, 2, and 1 through stepwise decrease of COD). Results showed that the integrity coefficient of the granules in R2 stabilized at 0.7–5.4\% during the whole operation. Significantly enhanced dissolved inorganic carbon (DIC) uptake and the faster growth of algae indicated the great potential for reduction in greenhouse gases (GHGs) emission by using the algal-bacterial AGS system. The algal-bacterial AGS biomass contained high phosphorus (P) and N contents as well as extremely high P bioavailability (up to 98\%) which could be easily used for resource recovery. Loosely bound extracellular polymeric substances (LB-EPS) might be the key factor to control the deterioration of granular stability in this system.",

keywords = "Algal-bacterial aerobic granular sludge (AGS), Granular stability, Low carbon wastewater, Nutrients accumulation, Nutrients removal",

author = "Ziwen Zhao and Xiaojing Yang and Wei Cai and Zhongfang Lei and Kazuya Shimizu and Zhenya Zhang and Motoo Utsumi and Duu-Jong Lee",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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doi = "10.1016/j.biortech.2018.07.114",

language = "English",

volume = "268",

pages = "221--229",

journal = "Bioresource Technology",

issn = "0960-8524",

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}

TY - JOUR

T1 - Response of algal-bacterial granular system to low carbon wastewater

T2 - Focus on granular stability, nutrients removal and accumulation

AU - Zhao, Ziwen

AU - Yang, Xiaojing

AU - Cai, Wei

AU - Lei, Zhongfang

AU - Shimizu, Kazuya

AU - Zhang, Zhenya

AU - Utsumi, Motoo

AU - Lee, Duu-Jong

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/11/1

Y1 - 2018/11/1

N2 - The effect of influent chemical oxygen demand to nitrogen (COD/N) ratio on the granular stability, nutrients removal and accumulation of the algal-bacterial AGS was investigated. Two sequencing batch reactors were operated under different influent COD/N ratio, i.e., R1 (control, COD/N = 8) and R2: (COD/N = 8, 4, 2, and 1 through stepwise decrease of COD). Results showed that the integrity coefficient of the granules in R2 stabilized at 0.7–5.4% during the whole operation. Significantly enhanced dissolved inorganic carbon (DIC) uptake and the faster growth of algae indicated the great potential for reduction in greenhouse gases (GHGs) emission by using the algal-bacterial AGS system. The algal-bacterial AGS biomass contained high phosphorus (P) and N contents as well as extremely high P bioavailability (up to 98%) which could be easily used for resource recovery. Loosely bound extracellular polymeric substances (LB-EPS) might be the key factor to control the deterioration of granular stability in this system.

AB - The effect of influent chemical oxygen demand to nitrogen (COD/N) ratio on the granular stability, nutrients removal and accumulation of the algal-bacterial AGS was investigated. Two sequencing batch reactors were operated under different influent COD/N ratio, i.e., R1 (control, COD/N = 8) and R2: (COD/N = 8, 4, 2, and 1 through stepwise decrease of COD). Results showed that the integrity coefficient of the granules in R2 stabilized at 0.7–5.4% during the whole operation. Significantly enhanced dissolved inorganic carbon (DIC) uptake and the faster growth of algae indicated the great potential for reduction in greenhouse gases (GHGs) emission by using the algal-bacterial AGS system. The algal-bacterial AGS biomass contained high phosphorus (P) and N contents as well as extremely high P bioavailability (up to 98%) which could be easily used for resource recovery. Loosely bound extracellular polymeric substances (LB-EPS) might be the key factor to control the deterioration of granular stability in this system.

KW - Algal-bacterial aerobic granular sludge (AGS)

KW - Granular stability

KW - Low carbon wastewater

KW - Nutrients accumulation

KW - Nutrients removal

UR - https://www.scopus.com/pages/publications/85050884919

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85050884919&origin=recordpage

U2 - 10.1016/j.biortech.2018.07.114

DO - 10.1016/j.biortech.2018.07.114

M3 - RGC 21 - Publication in refereed journal

C2 - 30081281

SN - 0960-8524

VL - 268

SP - 221

EP - 229

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Response of algal-bacterial granular system to low carbon wastewater: Focus on granular stability, nutrients removal and accumulation

Abstract

Bibliographical note

UN SDGs

Research Keywords

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