The role of restaurant wastewater for producing bioenergy towards a circular bioeconomy: A review on composition, environmental impacts, and sustainable integrated management

Ahmad, Imran; Abdullah, Nor Azimah Chew; Yuzir, Ali; Show, Pau Loke; Cheah, Wai Yan; Khoo, Kuan Shiong

doi:10.1016/j.envres.2022.113854

Cited by 14 publications

(3 citation statements)

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“…appear to be dominant because of microbial succession upon biodegradation. On the other hand, researchers frequently use these bacteria as an inoculum for bioaugmentation [ 1 , 24 ].…”

Section: Sources Of Microorganisms For Bioaugmentationmentioning

confidence: 99%

“…Bioremediation encompasses a broad range of environmental biotechnologies, which require multidisciplinary approaches through implementation of innovative tools to the natural biological processes occurring in soil, water, and air. The addition of microbial biomass (bacteria, fungi, and their secreted enzymes) to contaminated areas, i.e., the process of bioaugmentation, can be adapted to the green environment and can notably improve an area’s pollutant removal efficiency (RE), as well as reduce their removal time and costs [ 1 ]. However, bioaugmentation under controlled conditions in the field remains challenging, due to the biodiversity of a whole system, competition between microbial agents and indigenous microorganisms, substrate competition, climatic conditions, remediation cycles, and other factors.…”

Section: Introductionmentioning

confidence: 99%

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Current Trends in Bioaugmentation Tools for Bioremediation: A Critical Review of Advances and Knowledge Gaps

Muter

2023

Microorganisms

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Bioaugmentation is widely used in soil bioremediation, wastewater treatment, and air biofiltration. The addition of microbial biomass to contaminated areas can considerably improve their biodegradation performance. Nevertheless, analyses of large data sets on the topic available in literature do not provide a comprehensive view of the mechanisms responsible for inoculum-assisted stimulation. On the one hand, there is no universal mechanism of bioaugmentation for a broad spectrum of environmental conditions, contaminants, and technology operation concepts. On the other hand, further analyses of bioaugmentation outcomes under laboratory conditions and in the field will strengthen the theoretical basis for a better prediction of bioremediation processes under certain conditions. This review focuses on the following aspects: (i) choosing the source of microorganisms and the isolation procedure; (ii) preparation of the inoculum, e.g., cultivation of single strains or consortia, adaptation; (iii) application of immobilised cells; (iv) application schemes for soil, water bodies, bioreactors, and hydroponics; and (v) microbial succession and biodiversity. Reviews of recent scientific papers dating mostly from 2022–2023, as well as our own long-term studies, are provided here.

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“…appear to be dominant because of microbial succession upon biodegradation. On the other hand, researchers frequently use these bacteria as an inoculum for bioaugmentation [ 1 , 24 ].…”

Section: Sources Of Microorganisms For Bioaugmentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Current Trends in Bioaugmentation Tools for Bioremediation: A Critical Review of Advances and Knowledge Gaps

Muter

2023

Microorganisms

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“…Issues related to fat, oil, and grease from kitchen (KFOG) waste in sewer systems are intensifying on a globally scale. Restaurant lipid-containing wastewater comprises fatty acids, triacylglycerols, and lipid soluble hydrocarbons, which are the main cause of the high chemical oxygen demand (COD) in lipid-containing wastewater ( Ahmad et al, 2022 ). These KFOG blockages are difficult to hydrolyze naturally, leading to the overflow of sanitary sewers and sewage contamination of water bodies.…”

Section: Introductionmentioning

confidence: 99%

New insight into the metabolic mechanism of a novel lipid-utilizing and denitrifying bacterium capable of simultaneous removal of nitrogen and grease through transcriptome analysis

Tong,

Li,

Qin

et al. 2023

Front. Microbiol.

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IntroductionIssues related to fat, oil, and grease from kitchen waste (KFOG) in lipid-containing wastewater are intensifying globally. We reported a novel denitrifying bacterium Pseudomonas CYCN-C with lipid-utilizing activity and high nitrogen-removal efficiency. The aim of the present study was aim to explore the metabolic mechanism of the simultaneous lipid-utilizing and denitrifying bacterium CYCN-C at transcriptome level.MethodsWe comparatively investigated the cell-growth and nitrogen-removal performances of newly reported Pseudomonas glycinae CYCN-C under defined cultivation conditions. Transcriptome analysis was further used to investigate all pathway genes involved in nitrogen metabolism, lipid degradation and utilization, and cell growth at mRNA levels.ResultsCYCN-C could directly use fat, oil, and grease from kitchen waste (KFOG) as carbon source with TN removal efficiency of 73.5%, significantly higher than that (60.9%) with sodium acetate. The change levels of genes under defined KFOG and sodium acetate were analyzed by transcriptome sequencing. Results showed that genes cyo, CsrA, PHAs, and FumC involved in carbon metabolism under KFOG were significantly upregulated by 6.9, 0.7, 26.0, and 19.0-folds, respectively. The genes lipA, lipB, glpD, and glpK of lipid metabolic pathway were upregulated by 0.6, 0.4, 21.5, and 1.3-folds, respectively. KFOG also improved the denitrification efficiency by inducing the expression of the genes nar, nirB, nirD, and norR of denitrification pathways.ConclusionIn summary, this work firstly provides valuable insights into the genes expression of lipid-utilizing and denitrifying bacterium, and provides a new approach for sewage treatment with reuse of KFOG wastes.

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Synergy Unleashed: Smart Governance, Sustainable Tourism, and the Bioeconomy

George,

Varghese,

Kulkarni

2024

Lecture Notes in Networks and Systems

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The role of restaurant wastewater for producing bioenergy towards a circular bioeconomy: A review on composition, environmental impacts, and sustainable integrated management

Cited by 14 publications

References 106 publications

Current Trends in Bioaugmentation Tools for Bioremediation: A Critical Review of Advances and Knowledge Gaps

Current Trends in Bioaugmentation Tools for Bioremediation: A Critical Review of Advances and Knowledge Gaps

New insight into the metabolic mechanism of a novel lipid-utilizing and denitrifying bacterium capable of simultaneous removal of nitrogen and grease through transcriptome analysis

Synergy Unleashed: Smart Governance, Sustainable Tourism, and the Bioeconomy

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