# Why do anaerobes like the light stimulation: Enhanced anaerobic digestion at different wavelengths under ammonia stress

https://mdr.nims.go.jp/datasets/a942ea1f-0082-4fc8-8a00-dec558557efc

## Download

- [CEJ-D-24-29398.pdf](https://mdr.nims.go.jp/filesets/72298e11-6602-48e1-a63a-1e8fbf22c6f3/download)

## Id

a942ea1f-0082-4fc8-8a00-dec558557efc

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-25T05:48:50.939398Z

## Updated at

2026-02-03T03:30:10.509766Z

## Published at

2026-02-03T00:46:28.435469Z

## Doi

https://doi.org/10.48505/nims.4900

## First published url

https://doi.org/10.1016/j.cej.2024.149266

## Date published

2024-02-03

## Recorded date published

2024-3

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Why do anaerobes like the light stimulation: Enhanced anaerobic digestion
    at different wavelengths under ammonia stress'
  title_type: original
  lang: en

## Description

- description: Strengthening microbes with light during anaerobic digestion (AD) has
    emerged as a promising approach for effective waste-to-energy conversion, yet
    the underlying mechanisms remain elusive. This study delved into the complexities
    of microbial behavior, metabolic pathways, and digestion efficiency to explore
    the light-stimulating effects of various wavelengths (blue, green, red and mixed
    wavelengths) on AD under ammonia stress. Different light wavelengths induced distinct
    responses in anaerobic consortia and cell metabolism. Blue and green light impacted
    the Energy and Methane metabolism, while red light regulated the Cell cycle and
    motility-related genes. Although Methanosarcina dominance was observed across
    all the lighted groups, the dominant pathway shifted from hydrogenotrophic to
    acetoclastic methanogenesis specifically under the mix-color lighting. This characteristic
    was attributed to the collaborative effects of short and long wavebands, enhancing
    the diversity of microflora and triggering the cellular processes more effectively.
    Moreover, the enrichment of syntrophic bacteria and Methanosarcina (91.3% of archaeal
    community) facilitated the complete degradation of organic acid and outperformed
    methanation under mixed wavelengths. Furthermore, metagenetic predictions elucidated
    that critical metabolic processes regulating organic conversion (Carbohydrate
    metabolism), microbial response (Signal transduction, Membrane transports system)
    and cross-population cooperation (Quorum sensing) were significantly activated
    under the mixed wavelengths. Notably, the mixed-wavelength light stimulation upregulated
    a c-type cytochrome-mediated interspecies communication, fostering an energy-conserving
    bionetwork via electronic signals. From the academic to the practical viewpoint,
    this study unveiled the mechanisms and potential of a visible light-stimulated
    system for waste-to-energy conversion, highlighting the feasibility of sustainable
    sunlight-mediated waste management and energy recovery on a larger scale.
  description_type: abstract
  lang: und

## Creator

- name: Yunxin Zhu
  role: author
  orcid: https://orcid.org/0000-0001-6070-7305
- name: Guangqi An
  role: author
  orcid: https://orcid.org/0000-0003-2726-1369
- name: Cheng Zhang
  role: author
  orcid: https://orcid.org/0000-0001-5221-7461
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Guoping Chen
  role: author
- name: Yingnan Yang
  role: author
  orcid: https://orcid.org/0000-0001-8980-0634

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Visible light stimulation
  schema: not_defined
- subject: Spectral effect
  schema: not_defined
- subject: Ammonia-rich anaerobic digestion (AD)
  schema: not_defined
- subject: Metagenomic analysis
  schema: not_defined
- subject: Interspecies electron transfer (IET)
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-02-03
end_date: 2026-02-03

## Journal

- title: Chemical Engineering Journal
  issn: '13858947'
  volume: '483'
  article_number: '149266'

## Conference



## Related item



## Funding

- identifier: 22H03778
  funder_name: Japan Society for the Promotion of Science

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## Fileset

- id: 72298e11-6602-48e1-a63a-1e8fbf22c6f3
  filename: CEJ-D-24-29398.pdf
  content_type: application/pdf
  size: 3900103
  md5: dd132e39f19fdd0282a2d0bef8889b67

## Thumbnail

fileset_id: 72298e11-6602-48e1-a63a-1e8fbf22c6f3
filename: CEJ-D-24-29398.pdf