Enhancement of Lutein Yield from Coagulated Chlorella sp. ESP-6 with Sodium Hypochlorite

Yin-Ru Chang; Duu-Jong Lee; Jo-Shu Chang; Arun S. Mujumdar

doi:10.1080/07373937.2014.970261

Enhancement of Lutein Yield from Coagulated Chlorella sp. ESP-6 with Sodium Hypochlorite

Yin-Ru Chang, Duu-Jong Lee^*, Jo-Shu Chang, Arun S. Mujumdar

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

Abstract

Applying coagulant such as polyaluminum chloride (PACl) or chitosan can improve harvesting efficiency of microalgae from broth. However, the coagulant molecules have affinity to lutein molecules, so coagulation reduces the lutein yield. This work proposed the addition of NaOCl with coagulant for enhancing lutein recovery from Chlorella sp. ESP-6 cells. Adding PACl or chitosan largely enhanced membrane filtration flux but had no effects on residual solid contents of filter cake. NaOCl released insoluble substances from the biomass matrix and deteriorated soluble lutein in water. When both NaOCl and coagulant were presented, the NaOCl helped to release the lutein out of the biomass, while the PACl and chitosan molecules assisted in capturing the OCl^– ions. A practical harvest scheme including applying both PACl and NaOCl to optimize coagulation and maximum yield from Chlorella sp. ESP-6 biomass was discussed.

Original language	English
Pages (from-to)	429-433
Journal	Drying Technology
Volume	33
Issue number	4
DOIs	https://doi.org/10.1080/07373937.2014.970261
Publication status	Published - 12 Mar 2015
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Coagulant
Lutein
Microalgal harvesting
Oxidant
Recovery

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title = "Enhancement of Lutein Yield from Coagulated Chlorella sp. ESP-6 with Sodium Hypochlorite",

abstract = "Applying coagulant such as polyaluminum chloride (PACl) or chitosan can improve harvesting efficiency of microalgae from broth. However, the coagulant molecules have affinity to lutein molecules, so coagulation reduces the lutein yield. This work proposed the addition of NaOCl with coagulant for enhancing lutein recovery from Chlorella sp. ESP-6 cells. Adding PACl or chitosan largely enhanced membrane filtration flux but had no effects on residual solid contents of filter cake. NaOCl released insoluble substances from the biomass matrix and deteriorated soluble lutein in water. When both NaOCl and coagulant were presented, the NaOCl helped to release the lutein out of the biomass, while the PACl and chitosan molecules assisted in capturing the OCl– ions. A practical harvest scheme including applying both PACl and NaOCl to optimize coagulation and maximum yield from Chlorella sp. ESP-6 biomass was discussed.",

keywords = "Coagulant, Lutein, Microalgal harvesting, Oxidant, Recovery",

author = "Yin-Ru Chang and Duu-Jong Lee and Jo-Shu Chang and Mujumdar, {Arun S.}",

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T1 - Enhancement of Lutein Yield from Coagulated Chlorella sp. ESP-6 with Sodium Hypochlorite

AU - Chang, Yin-Ru

AU - Lee, Duu-Jong

AU - Chang, Jo-Shu

AU - Mujumdar, Arun S.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015/3/12

Y1 - 2015/3/12

N2 - Applying coagulant such as polyaluminum chloride (PACl) or chitosan can improve harvesting efficiency of microalgae from broth. However, the coagulant molecules have affinity to lutein molecules, so coagulation reduces the lutein yield. This work proposed the addition of NaOCl with coagulant for enhancing lutein recovery from Chlorella sp. ESP-6 cells. Adding PACl or chitosan largely enhanced membrane filtration flux but had no effects on residual solid contents of filter cake. NaOCl released insoluble substances from the biomass matrix and deteriorated soluble lutein in water. When both NaOCl and coagulant were presented, the NaOCl helped to release the lutein out of the biomass, while the PACl and chitosan molecules assisted in capturing the OCl– ions. A practical harvest scheme including applying both PACl and NaOCl to optimize coagulation and maximum yield from Chlorella sp. ESP-6 biomass was discussed.

AB - Applying coagulant such as polyaluminum chloride (PACl) or chitosan can improve harvesting efficiency of microalgae from broth. However, the coagulant molecules have affinity to lutein molecules, so coagulation reduces the lutein yield. This work proposed the addition of NaOCl with coagulant for enhancing lutein recovery from Chlorella sp. ESP-6 cells. Adding PACl or chitosan largely enhanced membrane filtration flux but had no effects on residual solid contents of filter cake. NaOCl released insoluble substances from the biomass matrix and deteriorated soluble lutein in water. When both NaOCl and coagulant were presented, the NaOCl helped to release the lutein out of the biomass, while the PACl and chitosan molecules assisted in capturing the OCl– ions. A practical harvest scheme including applying both PACl and NaOCl to optimize coagulation and maximum yield from Chlorella sp. ESP-6 biomass was discussed.

KW - Coagulant

KW - Lutein

KW - Microalgal harvesting

KW - Oxidant

KW - Recovery

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DO - 10.1080/07373937.2014.970261

M3 - RGC 21 - Publication in refereed journal

SN - 0737-3937

VL - 33

SP - 429

EP - 433

JO - Drying Technology

JF - Drying Technology

IS - 4

ER -

Enhancement of Lutein Yield from Coagulated Chlorella sp. ESP-6 with Sodium Hypochlorite

Abstract

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