Growth and removal of nitrogen and phosphorus by free-living and chitosan-immobilized cells of the marine cyanobacterium Synechococcus elongatus

被引：41

作者：

Aguilar-May, Bily ^{[1
]}

del Pilar Sanchez-Saavedra, Maria ^{[1
]}

机构：

[1] Ctr Invest Cient & Educ Super Ensenada, Dept Acuicultura, Ensenada 22860, Baja California, Mexico

来源：

JOURNAL OF APPLIED PHYCOLOGY | 2009年 / 21卷 / 03期

关键词：

Chitosan; Growth; Immobilization; Nutrient removal; Synechococcus elongatus; LOW-COST ADSORBENTS; WASTE-WATER; TETRASELMIS-SUECICA; PHOSPHATE REMOVAL; CHLORELLA SPP; ALGINATE; MICROALGAE; NITRATE; ALGAE; CARRAGEENAN;

D O I：

10.1007/s10811-008-9376-7

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：

This study investigated the growth rate of chitosan-immobilized cells of the marine cyanobacterium Synechococcus elongatus and its potential application in the removal of nitrogen and phosphorus for wastewater treatment. Immobilized cell cultures had a lag phase of growth due to the immobilization method, and their growth rate was similar to that of free-living cell cultures. Ammonia removal was higher in free cells (54%) than in immobilized cells (29%), but nitrate removal was similar in immobilized (38%) and free cells (44%); phosphorus removal was more efficient in free cells (88%) than in immobilized cells (77%). Chlorophyll a and protein content were higher in immobilized cells. Our study demonstrates that S. elongatus immobilized into chitosan capsules can remove nutrients and is able to maintain a growth rate comparable to that of free cells in culture.

引用

页码：353 / 360

页数：8

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