Hydrothermal pretreatment of salvaged cyanobacteria and use of pretreated medium for cultivating Scenedesmus obliquus

Wang, Ruochen; Zhu, Wei; Siyuan, HU; Feng, Ganyu; Xue, Zhaohui; Chen, Huaimin

doi:10.1016/j.biortech.2019.122120

Cited by 13 publications

(10 citation statements)

References 38 publications

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“…Also algae erosion in lake rapidly depletes the limited dissolved oxygen that results in the anoxia and harms to the animals [17]. In HAB occurring days, the intensive salvage operation is performed producing huge amount of cyanobacterial wastes [3]. To date a high proportion of salvaged algae needs to be properly treated.…”

Section: Discussionmentioning

confidence: 99%

“…Like plants, the cyanobacteria can also perform photosynthesis. The carbohydrate synthesized can be good nutrients in cultivating the probiotics in environments [3]. We previously demonstrated the stimulation of R. palustris PUF1 in the only substrate of dried cyanobacteria, however, much more informations are awaited to be discovered for a fruitful scale production of this process.…”

Section: Discussionmentioning

confidence: 99%

“…In these districts, the Chinese government organizes salvage operations of cyanobacteria every year. As in eutrophic Taihu Lake, it reports a production of cyanobacterial sludge -1.20, 1.64, 1.60 and 2.37 million tons in 2014, 2015, 2016 and 2017, respectively (Jiangsu Almanac, Nanjing University Press, 2014-2017) [3]. Presently it still lacks proper handling of the algal sludge which might become the pollution source in making the stinking odors and even degrading the nearby aquatic ecosystems due to the surface runoff.…”

Section: Introductionmentioning

confidence: 99%

“…Cyanobacterial populations are the potential nutrients via the anaerobic digestion through their carbohydrate and protein contents in supporting other microbes, such as Scenedesmus obliquus [3]. In theory the feasibility of R. palustris production from cyanobacterial waste yields valuable cells that are important in promoting the related industry of biomaterial extraction, fish feed supplement and probiotics production.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ammonium Inhibits Performance of <i>Rhodopseudomonas palustris</i> in Cyanobacterial Substrate

Tian¹,

Donde²,

Tian³

et al. 2020

Pol. J. Environ. Stud.

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Though it is feasible of Rhodopseudomonas palustris (R. palustris) stimulation in the cyanobacterial substrate, less is known about its performance under the high ammonium-nitrogen (NH 4-N) circumstance. In the present study, the performance of grown R. palustris Strain PUF1 under an NH 4-N gradient were investigated. Results showed that both the bacterial density and the pigment synthesis were severely inhibited at an NH 4-N concentration of 6.0 g/L, while the ultrathin structure of survived PUF1 wasn't obviously changed in comparison to NH 4-N concentration ≤3.0 g/L. Noticeably, at an NH 4-N concentration of 3.0 g/L PUF1s recovered its biosynthesis of pigments in a six-day acclimation period. Importantly, the PUF1s thrived in algal substrate under the NH 4-N concentration ≤1.0 g/L with per mL algal substrate 8.96 to 9.88×10 8 colony formation unit (CFU) on day six. Moreover, it was more diverse of the bacterial consortia in the low NH 4-N treatments (≤1.0 g/L) than that of NH 4-N concentration 3.0-6.0 g/L. Additionally, the excess NH 4-N reduced the sequestration of phosphorus by PUF1s from the algal substrate. Based on the above findings, an NH 4-N threshold up to 1.0 g/L was recommended, it herein produces substantial R. palustris biomass and achieves efficient nutrient sequestration from the protein-rich cyanobacterial feedstock.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ammonium Inhibits Performance of <i>Rhodopseudomonas palustris</i> in Cyanobacterial Substrate

Tian¹,

Donde²,

Tian³

et al. 2020

Pol. J. Environ. Stud.

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show abstract

“…Among many approaches trying to make use of cyanobacterial bloom biomass [ 17 , 18 ], a substitute of the biomass as aquafeed has been studied for decades due to its high protein content of approximately 50% [ 19 , 20 , 21 ]. The criteria of the feasibility of using cyanobacterial bloom for aquafeed generally include growth performance, consumer safety, and the amount of added cyanobacterial bloom biomass.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Cyanobacterial Bloom from Lake Taihu as a Protein Substitute in Fish Diet—A Case Study on Tilapia

Huo

Guo

et al. 2021

Toxins

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The utility of cyanobacterial bloom is often hindered by concerns about the toxin content. Over three years of investigation, we found that the toxin content of cyanobacterial bloom in Lake Taihu was always low in June and higher in late summer and autumn. The findings enabled us to compare the effects of diets containing low and high toxic cyanobacterial blooms on the growth and consumption safety of tilapia. There were no negative effects on the growth of tilapia, and the muscle seemed to be safe for human consumption in the treatment of 18.5% low toxic cyanobacterial bloom. Therefore, limitations of the utilization of cyanobacterial biomass can be overcome by selecting low toxic cyanobacterial bloom that can be found and collected in large lakes.

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In situ transesterification of wet sewage sludge via hydrothermal process: Biodiesel production and residue utilization

Zhou

Tan

et al. 2020

Biomass and Bioenergy

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Hydrothermal pretreatment of salvaged cyanobacteria and use of pretreated medium for cultivating Scenedesmus obliquus

Cited by 13 publications

References 38 publications

Ammonium Inhibits Performance of <i>Rhodopseudomonas palustris</i> in Cyanobacterial Substrate

Ammonium Inhibits Performance of <i>Rhodopseudomonas palustris</i> in Cyanobacterial Substrate

Evaluation of Cyanobacterial Bloom from Lake Taihu as a Protein Substitute in Fish Diet—A Case Study on Tilapia

In situ transesterification of wet sewage sludge via hydrothermal process: Biodiesel production and residue utilization

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