Effect of NaCl Concentration on Microbiological Properties in NaCl Assistant Anaerobic Fermentation: Hydrolase Activity and Microbial Community Distribution

Pang, Heliang; Xin, Xiaodong; He, Junguo; Cui, Baihui; Guo, Dabin; Liu, Shiming; Yan, Zhongsen; Liu, Chong; Wang, Xinyu; Nan, Jun

doi:10.3389/fmicb.2020.589222

Cited by 31 publications

(12 citation statements)

References 45 publications

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“…Through anaerobic fermentation, NaCl (sodium chloride) concentration can influence the microbial community and enzyme activity [ 45 ]. The highest removal efficiency of Na + was observed in samples under treatment VC (20%, v/v), which achieved a removal percentage of 13.5%, followed by treatment VB (10%, v/v) with 11.8% of Na + removed after 5 days.…”

Section: Resultsmentioning

confidence: 99%

Decolourization of Crystal Violate and Methylene Blue Wastewater Using Anaerobic Fermented Bio-Waste

Leong

Tee

Lim

et al. 2023

Water Conserv Sci Eng

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Textile exchange is a popular term in the textile industry and has incorporated Sustainable Development Goals (SDGs) into its strategy for transformation. The advance of Industrial Revolution 4.0 digitised the textile industry and incorporated artificial intelligence (AI) into operation and supply chain to enhance production and improve product quality in different downstream processing. Malaysia’s textile industry has largely continued to contribute to the domestic economy. In the textile industry, refinement treatment is crucial to avoid water pollution derived from dye, organic pollutants, and heavy metals. Wastewater derived from textile industries must perform a pre-treat before discarding into the natural environment, as the excess dye in textile wastewater negatively impacts the environment. Untreated or inadequately treated wastewater and discharge to nearby water sources contribute to disease increase. Therefore, this study aims to elucidate microbiota biodiversity that can significantly remove or break down the dye in wastewater from the textile industry. This study selected two cationic dyes, crystal violet (CV), and methylene blue (MB). Through the findings, microbial consortium derived from the fermented bio-waste show no significant difference in the decolourisation of wastewater polluted with CV (< 13.53%). In contrast, the microbial population generated from fermented bio-waste showed remarkable outcomes on MB decolourisation up to 88.52% in 3 days of treatment. In the absence of laccase in fermented bio-waste, microbial consortium produced from the fermented bio-waste is ineffective in decolourising the wastewater containing CV compared to MB.

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Section: Resultsmentioning

confidence: 99%

Decolourization of Crystal Violate and Methylene Blue Wastewater Using Anaerobic Fermented Bio-Waste

Leong

Tee

Lim

et al. 2023

Water Conserv Sci Eng

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“…Three percent NaCl has proven to be the optimum concentration that supports actinobacterial growth compared to concentrations lower or higher than 3% [185]. Moreover, the addition of NaCl to the medium selectively inhibits other fastidious microbes by altering the ionic strength of the medium, thus generating an osmotic shock for the microbes resulting in dehydration and growth retardation resulting in cell death [186,187]. Furthermore, NaCl addition also disrupts the solubility of oxygen by disrupting enzymatic functions, thus reducing the growth rate of fastidious bacteria and fungi [188].…”

Section: Invertebratesmentioning

confidence: 99%

Streptomyces: Still the Biggest Producer of New Natural Secondary Metabolites, a Current Perspective

Donald

Pipite

Subramani

et al. 2022

Microbiology Research

101

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There is a real consensus that new antibiotics are urgently needed and are the best chance for combating antibiotic resistance. The phylum Actinobacteria is one of the main producers of new antibiotics, with a recent paradigm shift whereby rare actinomycetes have been increasingly targeted as a source of new secondary metabolites for the discovery of new antibiotics. However, this review shows that the genus Streptomyces is still the largest current producer of new and innovative secondary metabolites. Between January 2015 and December 2020, a significantly high number of novel Streptomyces spp. have been isolated from different environments, including extreme environments, symbionts, terrestrial soils, sediments and also from marine environments, mainly from marine invertebrates and marine sediments. This review highlights 135 new species of Streptomyces during this 6-year period with 108 new species of Streptomyces from the terrestrial environment and 27 new species from marine sources. A brief summary of the different pre-treatment methods used for the successful isolation of some of the new species of Streptomyces is also discussed, as well as the biological activities of the isolated secondary metabolites. A total of 279 new secondary metabolites have been recorded from 121 species of Streptomyces which exhibit diverse biological activity. The greatest number of new secondary metabolites originated from the terrestrial-sourced Streptomyces spp.

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“…They also mentioned that the concentration of NaCl with appropriate doses could lead to the dissolution of the sludge and the deterioration of the blocks structure. Extracellular polymeric materials (EPS) release carbohydrates and proteins (Pang et al, 2020). However, high concentration of NaCl can reduce microbial activity and result to negative effects on AD to some extent (Li et al, 2020).…”

Section: Anaerobic Digestion Processmentioning

confidence: 99%

Effect of Salt Content on Biogas Production and Microbial Activity: Review Study

Alhraishawi

Aslan

2023

ESJ

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Over the years, biogas production technology has advanced with the goal of reducing process costs and greenhouse gas emissions, and increasing biogas production. Several design factors and operational aspects must be taken into account in order to produce a stable and efficient biogas. When the substrates contain high salts, anaerobic treatment will be ineffective due to the disadvantages of high energy input and operating cost, membrane contamination, and low efficiency. This indicates that the treatment of high salinity organic waste is a big challenge. High salinity levels had a negative effect on bacterial growth through bacterial osmotic pressure metabolism. For example, high salinity can alter the course of fermentation and the accumulation of volatile fatty acids at high concentrations, as well as cause a decrease in methane yield and maximum rate of methane production, prolonging the late-stage period. A low level of salt concentration encourages the growth of bacteria since sodium is essential for the growth and metabolism of microorganisms in AD systems. When the sodium salt concentration is less than 8 g/L, there is no significant inhibition in the generation of methane. Addition of >8 g/L NaCl, however, significantly reduced methane production (causing 17-80 percent inhibition). This paper focuses on understanding in detail how NaCl affects methane production and microbial activity, report salt concentrations that improve process efficiency and reduce inhibition, as well as review the modified kinetic model and demonstrate the effect of salt on methane production and delay in methanogenesis.

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Effect of NaCl Concentration on Microbiological Properties in NaCl Assistant Anaerobic Fermentation: Hydrolase Activity and Microbial Community Distribution

Cited by 31 publications

References 45 publications

Decolourization of Crystal Violate and Methylene Blue Wastewater Using Anaerobic Fermented Bio-Waste

Decolourization of Crystal Violate and Methylene Blue Wastewater Using Anaerobic Fermented Bio-Waste

Streptomyces: Still the Biggest Producer of New Natural Secondary Metabolites, a Current Perspective

Effect of Salt Content on Biogas Production and Microbial Activity: Review Study

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