Ultrasound Frequency Impacts on the Removal of Indigenous Blue-Green Algae Taken from Lake Taihu

Qiu, Ye Jing; Fei, Rong; Yang, Fei; Li, Jiang Ping; Long, Huan; Wu, Wei

doi:10.4028/www.scientific.net/amr.383-390.3758

Cited by 6 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, when the initial concentration is 1.5 10 7 /L, under the same flocs and bubble conditions, the collision rate is still increasing and close to or maybe have reached the saturation. Therefore, although the algae concentration increased from 1.5×10 8 /L to 1.5×10 9 . The stro erefore, the Fig.4 The ly electro-oxi the pressure the cell in carry out an L. The effec cells was m t density we at viable an y FDA and tive cells in the algae in am [14] .…”

Section: Resultsmentioning

confidence: 90%

“…The target algae, Microcystis aeruginosa (FACHB-905), was provided from the Fresh Algae Culture Collection of the Institute of Hydrobiology, Chinese Academy of Sciences [8] . Biomass was cultured by the methods of Qiu et al [9] .The initial algal concentration was 1.5 10 9 /L to investigate the effect of initial cell density and culture solution was diluted by deionized water. The ECF experimental device Fig.1 Schematic diagram of the experimental device ECF experiments were carried out in a glass flume with configuration of 25.5cm (length)× 10cm (width)×30cm (height) is schematically shown in Fig.1.…”

Section: Preparation Of the Algal Suspensionmentioning

confidence: 99%

See 1 more Smart Citation

An efficiency and security study of alage- water Separation by Electrocoagulation/flotation (ECF)

Lu¹,

Tian²,

Xu³

et al. 2016

Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer

Self Cite

View full text Add to dashboard Cite

The occurrence of algae in the water sources is a worldwide environmental health issue. Electrocoagulation/flotation (ECF), as an efficient, safety and environmental friendly algae removal technique without additional chemicals, shows obvious advantages on energy conservation and environmental security over conventional methods. In this study, the efficiency and security of algae separation in an ECF system were investigated. The algae removal, cell viability and extracellular MC-LR analysis were applied to access the effects of current density, run time and initial algal concentration on the separation efficiency and membrane integrity of cells. Results showed that within a reasonable range of parameters, ECF not only can achieve high efficiency of algae removal in a relatively short time but also ensure the integrity of algae cells. In this investigation, treat for 20 minutes at current density of 3mA/cm 2 was found to be optimum under the experimental conditions.

show abstract

Section: Resultsmentioning

confidence: 90%

Section: Preparation Of the Algal Suspensionmentioning

confidence: 99%

An efficiency and security study of alage- water Separation by Electrocoagulation/flotation (ECF)

Lu¹,

Tian²,

Xu³

et al. 2016

Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer

Self Cite

View full text Add to dashboard Cite

show abstract

“…Microcystis aeruginosa (FACHB-905), one of the predominant algae species found in most eutrophic wa ter bodies in China [6], provided from the Fresh Algae Culture Collection of the Institute of Hydrobiology, Chinese Academy of Sciences was used in this study. Biomass was cultivated on BG11 medium under general electric cool white fluorescent lamps at an average intensity of 150umol photons/m2/s with a 12-h photoperiod, manually agitated three to four times everday [9]. The culture solution of Microcystis aeruginosa in the study was diluted by deionized water.…”

Section: Methodsmentioning

confidence: 99%

Variation of algae scum in electro-coagulation-flotation (ECF) process

Tian¹,

Xu²,

Lu³

et al. 2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

View full text Add to dashboard Cite

Abstract. Algae scum, which is inevitable in the algae water separation process, should be harvested and forbidden to discharge into the water. This paper studied the variation of algae scum in electro-coagulation-flotation (ECF) process. All experiments were conducted in the homemade electro-coagulation-flotation device, and the operating parameters included electric current density and operating time. The results showed that the variation of algae scum is affected by the operating parameters. With increasing of the electric current density and prolongation of the operating time, the moisture content of algae scum decreases gradually. On the contrary, with increasing of the electric current density and prolongation of the operating time, the slag water rate increases gradually. And the values of the moisture content and the slag water rate are relatively lower than other technologies. Overall, the results showed that the electro-coagulation-flotation (ECF) is a well suitable technology for algae water separation.

show abstract

“…Freshwater lakes serve as crucial sources of daily water supply, making monitoring of algal concentration in lakes increasingly urgent. Methods to detect the concentration of green algae can be classified into direct and indirect measurements [1] . Direct measurement methods, including microscopic cell counting and flow cytometry, allow for direct observation of cell morphology and counting for concentration calculation.…”

Section: Introductionmentioning

confidence: 99%

Quantification of algal cell concentration based on optical coherence tomography

Zhang,

Tang

et al. 2023

Optics in Health Care and Biomedical Optics XIII

View full text Add to dashboard Cite

Accurate measurements of the algal cell concentration are critical in microalgae culturing and ecological monitoring. Here, we propose a non-contact method based on scattering coefficient intensity analysis using optical coherence tomography (OCT) to quantitatively assess green algal concentrations through scattering coefficient analysis of their depth distribution. To evaluate the feasibility of the method, the B-scans of green algae suspensions at different dilution levels in the centrifuge tubes were collected by OCT at the same lateral position. Then the amplitude information of each frame of the complex OCT sequence was extracted, and the scattering coefficient was calculated to preclude the effect of nonuniform illumination at different depth when collecting images in the OCT system. The scattering coefficients map of the green algae was performed digital image processing, in order to obtain the numbers of algae cells within a fixed region. By analyzing the map of scattering coefficients, the concentration of green algae can be derived and the distribution of green algae cells can be further studied. The results show that OCT scattering coefficient-based method can quantitatively assess different concentrations of green algae suspensions under non-contact conditions, and the scattering coefficient images can provide the depth distribution of green algae cells. This method provides an in situ, accurate and non-invasive tool for monitoring the growth of green algae in water bodies and can effectively monitor the growth of green algae and the health status of water bodies.

show abstract

Ultrasound Frequency Impacts on the Removal of Indigenous Blue-Green Algae Taken from Lake Taihu

Cited by 6 publications

References 14 publications

An efficiency and security study of alage- water Separation by Electrocoagulation/flotation (ECF)

An efficiency and security study of alage- water Separation by Electrocoagulation/flotation (ECF)

Variation of algae scum in electro-coagulation-flotation (ECF) process

Quantification of algal cell concentration based on optical coherence tomography

Contact Info

Product

Resources

About