The effect of bubble size on the efficiency and economics of harvesting microalgae by foam flotation

被引：44

作者：

Coward, Thea ^{[1
]}

Lee, Jonathan G. M. ^{[1
]}

Caldwell, Gary S. ^{[2
]}

机构：

[1] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Newcastle Univ, Sch Marine Sci & Technol, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF APPLIED PHYCOLOGY | 2015年 / 27卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

Chlorella; Biomass; Harvesting; Algae; Biofuel; PHOTOELECTRIC SENSORS; CAPILLARY PROBE; RISE VELOCITY; FRACTIONATION; COLUMN; SEPARATION; WATER; COMMERCIALIZATION; MICROFLOTATION; PERFORMANCE;

D O I：

10.1007/s10811-014-0384-5

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The effect of bubble size and rise velocity on the efficiency of a foam flotation microalgae harvesting unit was determined. Three sparger and input airflow combinations were used: (1) limewood sparger with constant airflow, (2) ceramic flat plate sparger with constant airflow and (3) ceramic flat plate sparger with an oscillating airflow. The ceramic sparger with oscillating flow generated the smallest bubbles within the liquid pool and the largest bubbles within the foam phase. This delivered the highest levels of biomass recovery due to enhanced bubble-algae collision and attachment efficiencies. The smaller bubbles generated by the ceramic sparger under constant or oscillating airflow had significantly faster rise velocities when compared to the larger bubbles produced by the limewood spargers. The faster velocities of the smaller bubbles were due to momentum transfer to the liquid phase. Analyses of the harvest economics revealed that the ceramic flat plate sparger with an oscillating airflow delivered the best overall cost-benefit relationship.

引用

页码：733 / 742

页数：10

共 43 条

[21] Microflotation performance for algal separation [J].

Hanotu, James ;

Bandulasena, H. C. Hemaka ;

Zimmerman, William B. .

BIOTECHNOLOGY AND BIOENGINEERING, 2012, 109 (07) :1663-1673

[22]

JAMIALAHMADI M, 1994, CHEM ENG RES DES, V72, P119

[23] Bubble formation and bubble rise velocity in gas-liquid systems: A review [J].

Kulkarni, AA ;

Joshi, JB .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (16) :5873-5931

[24] Process intensification of foam fractionation by successive contraction and expansion [J].

Li, Xueliang ;

Evans, Geoffrey M. ;

Stevenson, Paul .

CHEMICAL ENGINEERING RESEARCH & DESIGN, 2011, 89 (11A) :2298-2308

[25] Separation of algal cells from water by column flotation [J].

Liu, JC ;

Chen, YM ;

Ju, YH .

SEPARATION SCIENCE AND TECHNOLOGY, 1999, 34 (11) :2259-2272

[26] Single and multistage foam fractionation of rinse water with alkyl ethoxylate surfactants [J].

Morgan, G ;

Wiesmann, U .

SEPARATION SCIENCE AND TECHNOLOGY, 2001, 36 (10) :2247-2263

[27]

Pahl S.L., 2013, ALGAE BIOFUELS ENERG, V5, P165, DOI DOI 10.1007/978-94-007-5479-9_10

[28]

Sharma KK, 2013, BIOFUELS-UK, V4, P397, DOI [10.4155/BFS.13.25, 10.4155/bfs.13.25]

[29]

Stevenson P, 2012, FOAM ENG FUNDAMENTAL, P153

[30] Dimensional analysis of foam drainage [J].

Stevenson, Paul .

CHEMICAL ENGINEERING SCIENCE, 2006, 61 (14) :4503-4510

← 1 2 3 4 5 →