Effect of operating conditions on speciation and bioavailability of trace metals in submerged anaerobic membrane bioreactors

Pham Minh Thanh; Balachandran Ketheesan; Yan Zhou; David C. Stuckey

doi:10.1016/j.biortech.2017.07.040

Effect of operating conditions on speciation and bioavailability of trace metals in submerged anaerobic membrane bioreactors

Pham Minh Thanh, Balachandran Ketheesan, Yan Zhou, David C. Stuckey^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

This study investigated the effect of changes in pH (7, 6.5 and 6), hydraulic retention time (HRT) (6 h, 4 h, and 2 h), solids retention time (SRT) (100 d and 25 d) on the speciation of trace metals (TMs) in submerged anaerobic membrane bioreactors (SAMBRs). The results showed that the metal retention capacity of SAMBRs reduced when the pH, HRT and SRT were reduced i.e. up to 21.9%, 39.1%, and 17.1%, respectively, but it was also found that the speciation of these TMs generally shifted towards highly bioavailable fractions i.e. Soluble and Exchangeable. The degree of shifting in speciation depended on the affinity of the TMs for anaerobic sludge and their sensitivity to the changes. TMs with the most and the least significant changes in speciation were Fe and Mn, respectively.

Original language	English
Pages (from-to)	810-819
Number of pages	10
Journal	Bioresource Technology
Volume	243
DOIs	https://doi.org/10.1016/j.biortech.2017.07.040
Publication status	Published - 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

ASJC Scopus Subject Areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

Keywords

Anaerobic membrane bioreactor
Bioavailability
Operating parameters
Speciation
Trace metals

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2017.07.040

Cite this

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title = "Effect of operating conditions on speciation and bioavailability of trace metals in submerged anaerobic membrane bioreactors",

abstract = "This study investigated the effect of changes in pH (7, 6.5 and 6), hydraulic retention time (HRT) (6 h, 4 h, and 2 h), solids retention time (SRT) (100 d and 25 d) on the speciation of trace metals (TMs) in submerged anaerobic membrane bioreactors (SAMBRs). The results showed that the metal retention capacity of SAMBRs reduced when the pH, HRT and SRT were reduced i.e. up to 21.9%, 39.1%, and 17.1%, respectively, but it was also found that the speciation of these TMs generally shifted towards highly bioavailable fractions i.e. Soluble and Exchangeable. The degree of shifting in speciation depended on the affinity of the TMs for anaerobic sludge and their sensitivity to the changes. TMs with the most and the least significant changes in speciation were Fe and Mn, respectively.",

keywords = "Anaerobic membrane bioreactor, Bioavailability, Operating parameters, Speciation, Trace metals",

author = "Thanh, {Pham Minh} and Balachandran Ketheesan and Yan Zhou and Stuckey, {David C.}",

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year = "2017",

doi = "10.1016/j.biortech.2017.07.040",

language = "English",

volume = "243",

pages = "810--819",

journal = "Bioresource Technology",

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T1 - Effect of operating conditions on speciation and bioavailability of trace metals in submerged anaerobic membrane bioreactors

AU - Thanh, Pham Minh

AU - Ketheesan, Balachandran

AU - Zhou, Yan

AU - Stuckey, David C.

PY - 2017

Y1 - 2017

N2 - This study investigated the effect of changes in pH (7, 6.5 and 6), hydraulic retention time (HRT) (6 h, 4 h, and 2 h), solids retention time (SRT) (100 d and 25 d) on the speciation of trace metals (TMs) in submerged anaerobic membrane bioreactors (SAMBRs). The results showed that the metal retention capacity of SAMBRs reduced when the pH, HRT and SRT were reduced i.e. up to 21.9%, 39.1%, and 17.1%, respectively, but it was also found that the speciation of these TMs generally shifted towards highly bioavailable fractions i.e. Soluble and Exchangeable. The degree of shifting in speciation depended on the affinity of the TMs for anaerobic sludge and their sensitivity to the changes. TMs with the most and the least significant changes in speciation were Fe and Mn, respectively.

AB - This study investigated the effect of changes in pH (7, 6.5 and 6), hydraulic retention time (HRT) (6 h, 4 h, and 2 h), solids retention time (SRT) (100 d and 25 d) on the speciation of trace metals (TMs) in submerged anaerobic membrane bioreactors (SAMBRs). The results showed that the metal retention capacity of SAMBRs reduced when the pH, HRT and SRT were reduced i.e. up to 21.9%, 39.1%, and 17.1%, respectively, but it was also found that the speciation of these TMs generally shifted towards highly bioavailable fractions i.e. Soluble and Exchangeable. The degree of shifting in speciation depended on the affinity of the TMs for anaerobic sludge and their sensitivity to the changes. TMs with the most and the least significant changes in speciation were Fe and Mn, respectively.

KW - Anaerobic membrane bioreactor

KW - Bioavailability

KW - Operating parameters

KW - Speciation

KW - Trace metals

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VL - 243

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JO - Bioresource Technology

JF - Bioresource Technology

ER -

Effect of operating conditions on speciation and bioavailability of trace metals in submerged anaerobic membrane bioreactors

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

UN SDGs

Access to Document

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