Effect of alginate concentration in wastewater nutrient removal using alginate-immobilized microalgae beads: Uptake kinetics and adsorption studies

被引：46

作者：

Banerjee, Shantanu ^{[1
]}

Tiwade, Palas Balakdas ^{[1
]}

Sambhav, Kumar ^{[1
]}

Banerjee, Chiranjib ^{[2
]}

Bhaumik, Soubhik Kumar ^{[1
]}

机构：

[1] Indian Inst Technol, Indian Sch Mines, Dept Chem Engn, Dhanbad 826004, Jharkhand, India

[2] Indian Sch Mines, Indian Inst Technol, Dept Environm Sci & Engn, Dhanbad 826004, Bihar, India

来源：

BIOCHEMICAL ENGINEERING JOURNAL | 2019年 / 149卷

关键词：

Alginate concentration; Nutrient removal; Uptake kinetics; Adsorption; Charge-interaction; Pore morphology; CHLORELLA-VULGARIS; PHOSPHORUS REMOVAL; MODIFIED CHITOSAN; P REMOVAL; IONS; GROWTH; PHOSPHATE; AMMONIUM; NITROGEN; EQUILIBRIUM;

D O I：

10.1016/j.bej.2019.107241

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：

Effect of alginate concentration on wastewater nutrient removal by alginate-immobilized microalgae bead systems (AIMS) of Chlorella vulgaris was investigated to delineate the underlying role of alginate matrix in the removal process. The study includes kinetic evaluation of nutrient removal in AIMS of different alginate concentration (1.5-4.5% w/v%) followed by an assessment of abiotic adsorption characteristics of blank alginate beads systems (BASS) of same alginate concentrations. Results establish 3% alginate concentration as optimal both for nutrient removal in AIMS and adsorption in BABS. The adsorption data in the latter fitted well with Langmuir isotherms, suggesting monolayer physisorption, which was later corroborated through Fourier-Transform Infrared Spectroscopy (FTIR) and Energy Dispersive X-ray (EDX) analysis. A scheme for adsorption of NH4+ - N and PO43- P on alginate matrix through hydrogen bonding was illustrated. The optimal trends were explained based on pore morphology and bead structural integrity.

引用

页数：12

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