当前位置： SCI文献检索 > BIORESOURCE TECHNOLOGY期刊下所有文献 > Maximization of organic acids production by Aspergillus niger in a bubble column bioreactor for V and Ni recovery enhancement from power plant residual ash in spent-medium bioleaching experiments.

Maximization of organic acids production by Aspergillus niger in a bubble column bioreactor for V and Ni recovery enhancement from power plant residual ash in spent-medium bioleaching experiments.

Abstract：

:Spent-medium bioleaching of V and Ni from a power plant residual ash (PPR ash) was conducted using organic acids produced by Aspergillus niger. The production of organic acids in a bubble column bioreactor was optimized through selecting three most influencing factors. Under optimum condition of aeration rate of 762.5(ml/min), sucrose concentration of 101.9(g/l) and inoculum size of 40(ml/l), respectively 17,185, 4539, 1042 and 502(ppm) of oxalic, gluconic, citric and malic acids were produced. Leaching experiments were carried out using biogenic produced organic acids under leaching environment temperature of 60°C and rotary shaking speed of 135rpm, with various pulp densities of 1, 2, 3, 5, 7 and 9(%w/v). The results showed that biogenic produced organic acids leached V much more efficiently than Ni so that even at high pulp density of 9(%w/v), 83% of V was recovered while Ni recovery yield was 30%.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Rasoulnia P,Mousavi SM

doi

10.1016/j.biortech.2016.05.114

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

729-36

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(16)30773-8

journal_volume

216

pub_type

杂志文章

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