Bicarbonate-assisted microalgae cultivation for drinking water RO reject recycling and bioproduct generation

被引：4
作者：
Bhandari, Mamta [1 ]
Kharkwal, Shailesh [2 ,3 ]
Prajapati, Sanjeev Kumar [1 ]
机构：
[1] Indian Inst Technol IIT Roorkee, Dept Hydro & Renewable Energy, Environm & Biofuel Res Lab EBRL, Roorkee 247667, Uttarakhand, India
[2] H2O Mantra Pvt Ltd, Ghaziabad 201014, Uttar Pradesh, India
[3] EnvironSens Pte Ltd, Singapore 657598, Singapore
来源：
BIORESOURCE TECHNOLOGY REPORTS | 2024年 / 25卷
关键词：
RO reject; Microalgae; Bicarbonate; RO reject recycling; Resources recovery; Biorefinery; WASTE-WATER; SODIUM-BICARBONATE; BIOMASS PRODUCTION; LIGHT-INTENSITY; CARBON-SOURCES; GROWTH; SUPPLEMENTATION; PRODUCTIVITY; BIODIESEL; NITROGEN;
D O I：
10.1016/j.biteb.2023.101756
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 undrapes a microalgae-mediated approach for recycling drinking water reverse osmosis (RO) reject with bicarbonate supplementation. Among the tested strains, Chlorella pyrenoidosa exhibited a significantly (p <= 0.05) higher biomass growth (760.81 +/- 34.24 mg L1) at 4.0 g L1 bicarbonate in RO reject. Whereas Scene-desmus sp. showed the maximum biomass yield of 1041.81 +/- 33.32 mg L1 in RO reject without bicarbonate. Moreover, bicarbonate in RO reject promoted biofuel precursor synthesis, with Scenedesmus obliquus and Chlorella sorokiniana acquiring maximum carbohydrate (339.41 +/- 13.68 mg L1) and lipid (1453.57 +/- 44.29 mg L1) yields at 0.5 and 1.0 g L1 bicarbonate, respectively. The fatty acid methyl ester (FAME) and theoretical methane potential (TMP) analyses showed improved biodiesel quality and biogas yield from bicarbonate- supplemented RO reject-grown microalgal biomass. Thus, the present findings inferred that bicarbonate sup-plementation to RO reject could be an economically feasible approach for RO reject recycling and microalgae- mediated resource recovery
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页数：12
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