Natural plant extracts as an economical and ecofriendly alternative for harvesting microalgae

被引：52

作者：

Behera, Bunushree ^{[1
]}

Balasubramanian, P. ^{[1
]}

机构：

[1] Natl Inst Technol Rourkela, Dept Biotechnol & Med Engn, Agr & Environm Biotechnol Grp, Rourkela 769008, India

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 283卷

关键词：

Microalgae; Algal biofuel; Natural coagulants; Harvesting; Cost economics; LCA; FLOCCULATION METHODS; FERRIC-CHLORIDE; TURBIDITY; REMOVAL; COAGULANTS; MECHANISM; CHITOSAN; AGENT;

D O I：

10.1016/j.biortech.2019.03.070

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The study investigated the ability of plant based natural coagulants from Azadirachta indica; Ficus indica; Moringa oleifera; Citrus sinensis; Punica granatum and Musa acuminata to harvest the microalgal biomass. Influence of eluent type (water and NaCl) and concentration (1-5 N) on coagulant extraction; coagulant dosage (1-5 g) and volume (20-100 ml); pH (6-12) and algal concentration (0.1-1 g l(-1)) on harvesting were analyzed. The results obtained were compared with alum and chitosan. FTIR and biochemical analysis confirmed the presence of bioactive compounds to aid coagulation. Biomass removal efficiency of 75.50% was obtained with M. oleifera extracts (8 mg ml(-1)) at pH 7.5-7.8, within 100 min. The harvesting efficiency increased to 95.76% when 4mgml(-1) M. oleifera extracts was combined with 0.75 mg ml(-1) chitosan. The life cycle and cost analysis acknowledged the eco-friendly coagulants as strong alternative for conventional coagulants used in microalgal harvesting, thereby improvising the overall bioprocess.

引用

页码：45 / 52

页数：8

共 42 条

[1]

Baharuddin NNDE, 2016, PAK J BOT, V48, P831

[2]

Behera B., 2018, BIORESOUR TECHNOL

[3] Biophysical model and techno-economic assessment of carbon sequestration by microalgal ponds in Indian coal based power plants [J].

Behera, Bunushree ;

Aly, Nazimdhine ;

Balasubramanian, P. .

JOURNAL OF CLEANER PRODUCTION, 2019, 221 :587-597

[4] Biophysical modeling of microalgal cultivation in open ponds [J].

Behera, Bunushree ;

Aly, Nazimdhine ;

Balasubramanian, P. .

ECOLOGICAL MODELLING, 2018, 388 :61-71

[5]

BLIGH EG, 1959, CAN J BIOCHEM PHYS, V37, P911

[6] Unravelling the Mechanism of Chitosan-Driven Flocculation of Microalgae in Seawater as a Function of pH [J].

Blockx, Jonas ;

Verfaillie, An ;

Thielemans, Wim ;

Muylaert, Koenraad .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (09) :11273-11279

[7]

BRADFORD MM, 1976, ANAL BIOCHEM, V72, P248, DOI 10.1016/0003-2697(76)90527-3

[8] Optimal conditions of different flocculation methods for harvesting Scenedesmus sp cultivated in an open-pond system [J].

Chen, Lu ;

Wang, Cunwen ;

Wang, Weiguo ;

Wei, Jiang .

BIORESOURCE TECHNOLOGY, 2013, 133 :9-15

[9] Techno-economic evaluation of microalgae harvesting and dewatering systems [J].

Fasaei, F. ;

Bitter, J. H. ;

Slegers, P. M. ;

van Boxtel, A. J. B. .

ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, 2018, 31 :347-362

[10] Methods coagulation/flocculation and flocculation with ballast agent for effective harvesting of microalgae [J].

Gorin, Kirill V. ;

Sergeeva, Yana E. ;

Butylin, Victor V. ;

Komova, Anastasiya V. ;

Pojidaev, Victor M. ;

Badranova, Gulfiya U. ;

Shapovalova, Anna A. ;

Konova, Irina A. ;

Gotovtsev, Pavel M. .

BIORESOURCE TECHNOLOGY, 2015, 193 :178-184

← 1 2 3 4 5 →