Heterotrophic cultivation of microalgae using aquaculture wastewater: A biorefinery concept for biomass production and nutrient remediation

被引：156
作者：
Guidhe, Abhishek [1 ]
Ansari, Faiz A. [1 ]
Singh, Poonam [1 ]
Bux, Faizal [1 ]
机构：
[1] Durban Univ Technol, Inst Water & Wastewater Technol, POB 1334, ZA-4000 Durban, South Africa
来源：
ECOLOGICAL ENGINEERING | 2017年 / 99卷
基金：
新加坡国家研究基金会;
关键词：
Microalgae; Aquaculture wastewater; Heterotrophic; Biomass; Biorefinery; CHLORELLA-SOROKINIANA; BIODIESEL PRODUCTION; LIPID PRODUCTION; REMOVAL; PHOSPHORUS; RECOVERY; NITROGEN;
D O I：
10.1016/j.ecoleng.2016.11.013
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
Cultivation of microalgae utilizing wastewater substrate could form a sustainable biorefinery with double benefit of biomass generation and nutrient remediation. In this study potential of aquaculture wastewater is evaluated for cultivation of Chlorella sorokiniana in heterotrophic mode for generation of high value biomass. Nutrient removal potential is also assessed. Aquaculture wastewater with 400 mgL(-1) sodium nitrate supplementation resulted in biomass productivity of 498.14 mgL(-1)d(-1). The biomass generated showed lipid productivity of 150.19 mgL(-1)d(-1), carbohydrate productivity of 172.91 mgL(-1)d(-1) and protein productivity of 141.57 mgL(-1)d(-1). The nutrient removal efficiencies were 75.56% for ammonium, 84.51% for nitrates, 73.35% for phosphates and 71.88% for COD (chemical oxygen demand). The findings of this study underline the potential of aquaculture wastewater for production of valuable microalgal biomass which can be utilized for biofuels or feed application. This biorefinery concept also polished aquaculture wastewater which can be effectively reused. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：47 / 53
页数：7
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