Production of a non-cytotoxic bioflocculant by a bacterium utilizing a petroleum hydrocarbon source and its application in heavy metal removal

A bacterium isolated from the activated sludge of an oil refinery of Assam, India retained efficient bioflocculating activity through production of the bioflocculant when it was grown on a crude oil amended medium void of any other carbon source.

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Investigation on Heavy Metal Removal from a Crude Oil Contaminated Soil using Rhamnolipid Biosurfactant as a New Eco-Friendly Method

Tenside Surfactants Detergents ◽

10.3139/113.110710 ◽

2020 ◽

Vol 57 (6) ◽

pp. 515-520

Author(s):

Nayyereh Kholghi ◽

Hossein Amani ◽

Shokoufeh Malekmahmoodi ◽

Alireza Amiri

Keyword(s):

Heavy Metal ◽

Crude Oil ◽

Contaminated Soil ◽

Metal Removal ◽

Heavy Metal Removal ◽

Rhamnolipid Biosurfactant

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Investigation on Asphaltene and Heavy Metal Removal from Crude Oil Using a Thermal Effect

Energy & Fuels ◽

10.1021/ef100986m ◽

2011 ◽

Vol 25 (1) ◽

pp. 300-306 ◽

Cited By ~ 17

Author(s):

M. Ashtari ◽

M. Bayat ◽

M. Sattarin

Keyword(s):

Heavy Metal ◽

Crude Oil ◽

Thermal Effect ◽

Metal Removal ◽

Heavy Metal Removal

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Heavy metal removal from synthetic wastewaters in an anaerobic bioreactor using stillage from ethanol distilleries as a carbon source

Chemosphere ◽

10.1016/j.chemosphere.2007.05.074 ◽

2007 ◽

Vol 69 (11) ◽

pp. 1815-1820 ◽

Cited By ~ 47

Author(s):

M.M.M. Gonçalves ◽

A.C.A. da Costa ◽

S.G.F. Leite ◽

G.L. Sant’Anna

Keyword(s):

Heavy Metal ◽

Carbon Source ◽

Metal Removal ◽

Heavy Metal Removal ◽

Anaerobic Bioreactor

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Comparison of heavy metal removal efficiencies in four activated sludge processes

Journal of Central South University ◽

10.1007/s11771-015-2923-x ◽

2015 ◽

Vol 22 (10) ◽

pp. 3788-3794 ◽

Cited By ~ 2

Author(s):

Jun Yang ◽

Ding Gao ◽

Tong-bin Chen ◽

Mei Lei ◽

Guo-di Zheng ◽

...

Keyword(s):

Heavy Metal ◽

Activated Sludge ◽

Metal Removal ◽

Heavy Metal Removal ◽

Removal Efficiencies ◽

Activated Sludge Processes

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Heavy metal-binding proteins from metal-stimulated bacteria as a novel adsorbent for metal removal technology

Water Science & Technology ◽

10.2166/wst.2006.200 ◽

2006 ◽

Vol 53 (6) ◽

pp. 221-226 ◽

Cited By ~ 1

Author(s):

D. Sano ◽

K. Myojo ◽

T. Omura

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Activated Sludge ◽

Metal Binding ◽

Binding Proteins ◽

Metal Removal ◽

Heavy Metal Removal ◽

Copper Ion ◽

Amino Acid Sequences ◽

Heavy Metal Binding

Water pollution with toxic heavy metals is of growing concern because heavy metals could bring about serious problems for not only ecosystems in the water environment but also human health. Some metal removal technologies have been in practical use, but much energy and troublesome treatments for chemical wastes are required to operate these conventional technologies. In this study, heavy metal-binding proteins (HMBPs) were obtained from metal-stimulated activated sludge culture with affinity chromatography using copper ion as a ligand. Two-dimensional electrophoresis revealed that a number of proteins in activated sludge culture were recovered as HMBPs for copper ion. N-termini of five HMBPs were determined, and two of them were found to be newly discovered proteins for which no amino acid sequences in protein databases were retrieved at more than 80% identities. Metal-coordinating amino acids occupied 38% of residues in one of the N-terminal sequences of the newly discovered HMBPs. Since these HMBPs were expected to be stable under conditions of water and wastewater treatments, it would be possible to utilize HMBPs as novel adsorbents for heavy metal removal if mass volume of HMBPs can be obtained with protein cloning techniques.

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