Dynamics of bacterial and eukaryotic community associated with stability during vermicomposting of pelletized dewatered sludge

Fu, Xiaoyong; Huang, Kui; Cui, Guangyu; Chen, Xuemin; Li, Fusheng; Zhang, Xiaoyu; Li, Fēi

doi:10.1016/j.ibiod.2015.07.015

Cited by 36 publications

(19 citation statements)

References 45 publications

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“…73 Fu et al investigated the potential of using vermicomposting on pelletized dewatered sludge with particle sizes of 4.5 and 14.5 mm. 70 The experimental results showed that the stabilization rate of the small pelletized dewatered sludge is faster than the sludge with bigger particle size. Similar outcomes have been obtained from the study conducted by Fu et al, in which 4.5 mm pelletized dewatered sludge was easier to stabilize through vermicomposting than the 14.5 mm pelletized sludge.…”

Section: Vermicomposting Of Dewatered Sludgementioning

confidence: 98%

“…Fu et al . investigated the potential of using vermicomposting on pelletized dewatered sludge with particle sizes of 4.5 and 14.5 mm . The experimental results showed that the stabilization rate of the small pelletized dewatered sludge is faster than the sludge with bigger particle size.…”

Section: Vermicomposting Of Organic Wastementioning

confidence: 99%

“…The rapid development of urbanization and industrialization has led to a significant increase in wastewater treatment plants. Typically, the wastewater sludge consists of complex organic compounds, biological flocs and many environmentally harmful contaminants . Treatment methods such as composting and vermicomposting have been considered suitable methods to treat wastewater sludge.…”

Section: Vermicomposting Of Organic Wastementioning

confidence: 99%

“…Typically, the wastewater sludge consists of complex organic compounds, biological flocs and many environmentally harmful contaminants. 70 Treatment methods such as composting and vermicomposting have been considered suitable methods to treat wastewater sludge. However, Fu et al stated that the direct application of fresh sludge as a substrate for vermicomposting should be avoided as it might cause anaerobic conditions and release toxic gases that are harmful to the earthworms.…”

Section: Vermicomposting Of Dewatered Sludgementioning

confidence: 99%

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Sustainable approach to biotransform industrial sludge into organic fertilizer via vermicomposting: a mini‐review

Lee

Shak

et al. 2018

J of Chemical Tech & Biotech

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Currently, industrial sludge is generated in large amounts. Industrial sludge is a solid or semi‐solid material consisting of all compounds removed from wastewater, as well as any substances added to the biological and chemical operation units during the treatment process. The composition of sludge may vary considerably. Furthermore, distinctive treatment and disposal methods are necessary as sludge produced from different industries has different characteristics. Therefore, processing and disposing of industrial sludge is a challenging and complex environmental problem. Landfilling, incineration and agricultural land application are the three most commonly employed methods for the disposal of industrial sludge. Among the three methods, the agricultural land application is a convenient and economical disposal alternative for industrial sludge. However, industrial sludge could have high putrescible content and pathogenic hazards. One possible way to ensure that the industrial sludge could be reused on agricultural land is by conditioning and stabilizing the sludge using a pretreatment process. One of the pretreatment processes which could be employed in this context is vermicomposting. Vermicomposting is an alternative for biological stabilization of organic wastes, with the addition of earthworms. Through vermicomposting, industrial sludge could be transformed into matured organic fertilizer or vermicompost in a shorter period. Thus, this work reviewed the recent literature on utilizing the vermicomposting process to manage industrial sludge in order to assess the feasibility of this technology. The present review also provides a brief overview of the production and treatment methods of industrial sludge. © 2017 Society of Chemical Industry

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Section: Vermicomposting Of Dewatered Sludgementioning

confidence: 98%

Section: Vermicomposting Of Organic Wastementioning

confidence: 99%

Section: Vermicomposting Of Organic Wastementioning

confidence: 99%

Section: Vermicomposting Of Dewatered Sludgementioning

confidence: 99%

See 2 more Smart Citations

Sustainable approach to biotransform industrial sludge into organic fertilizer via vermicomposting: a mini‐review

Lee

Shak

et al. 2018

J of Chemical Tech & Biotech

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“…For instance, Eisenia fetida as a ubiquitous epigenetic species capable of vermicomposting exhibited wide tolerance to a broad temperature range (15-25 • C) for their growth [11]. Previous studies also indicate high variability in the temperature used for vermicomposting with most using room temperature, also suggesting a wide range of temperature useful for treating sludge [6,12,13]. Only a few publications clearly reported that 20 • C was the optimal temperature condition for treating activated sludge [14].…”

mentioning

confidence: 99%

Quality of Vermicompost and Microbial Community Diversity Affected by the Contrasting Temperature during Vermicomposting of Dewatered Sludge

Zhang

Huang

2020

IJERPH

Self Cite

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This study aimed to investigate the effects of temperature on the quality of vermicompost and microbial profiles of dewatered sludge during vermicomposting. To do this, fresh sludge was separately vermicomposted with the earthworm Eisenia fetida under different temperature regimes, specifically, 15 • C, 20 • C, and 25 • C. The results showed that the growth rate of earthworms increased with temperature. Moreover, the lowest organic matter content along with the highest electrical conductivity, ammonia, and nitrate content in sludge were recorded for 25 • C indicating that increasing temperature significantly accelerated decomposition, mineralization, and nitrification. In addition, higher temperature significantly enhanced microbial activity in the first 30 days of vermicomposting, also exhibiting the fastest stabilization at 25 • C. High throughput sequencing results further revealed that the alpha diversity of the bacterial community was enhanced with increasing temperature resulting in distinct bacterial genera in each vermicompost. This study suggests that quality of vermicompost and dominant bacterial community are strongly influenced by the contrasting temperature during vermicomposting of sludge, with the optimal performance at 25 • C. one of the most critical factors affecting the growth and reproduction of earthworms [9,10]. For instance, Eisenia fetida as a ubiquitous epigenetic species capable of vermicomposting exhibited wide tolerance to a broad temperature range (15-25 • C) for their growth [11]. Previous studies also indicate high variability in the temperature used for vermicomposting with most using room temperature, also suggesting a wide range of temperature useful for treating sludge [6,12,13]. Only a few publications clearly reported that 20 • C was the optimal temperature condition for treating activated sludge [14]. Given that the growth of earthworms is strongly associated with temperature, different regimes may also affect the quality of the vermicomposting product and its agricultural value. Hence, understanding the optimal temperature condition to operate vermicomposting of sludge is vital to drive the development of the vermicomposting industry.Although the use of earthworms is popular in vermicomposting systems, microorganisms also play important roles in decomposing and converting the organic matter present in sludge [8,15]. In addition, the dewatered sludge is mainly characterized by active microbes and debris from dead cells and particulate matter [1]. Consequently, the activity, abundance, and community composition of microbes in sludge may be strongly associated with the vermicomposting efficiency and sludge quality [8,13]. For other sludge biodegradation systems, the impact of temperature on microbial profiles has been well-investigated, such as on anaerobic digestion [16,17], composting [18,19], and vermifiltration [20]. Even in soil systems, temperature also showed an intensive effect on microbial growth, activity, and community structuring within a short period, and thus affe...

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Vermicompost for Sustainable Future: Nature-Based Solution for Environmental Degradation, Climate Change, and Food Security

Gill,

Iqbal,

Jabbar

et al. 2023

Climate-Resilient Agriculture, Vol 1

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Dynamics of bacterial and eukaryotic community associated with stability during vermicomposting of pelletized dewatered sludge

Cited by 36 publications

References 45 publications

Sustainable approach to biotransform industrial sludge into organic fertilizer via vermicomposting: a mini‐review

Sustainable approach to biotransform industrial sludge into organic fertilizer via vermicomposting: a mini‐review

Quality of Vermicompost and Microbial Community Diversity Affected by the Contrasting Temperature during Vermicomposting of Dewatered Sludge

Vermicompost for Sustainable Future: Nature-Based Solution for Environmental Degradation, Climate Change, and Food Security

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