The potential of compost-based biobarriers for Cr(VI) removal from contaminated groundwater: Column test

Boni, Maria Rosaria; Sbaffoni, Silvia

doi:10.1016/j.jhazmat.2008.12.036

Cited by 49 publications

(39 citation statements)

References 20 publications

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“…Reduction of Cr(VI) to C(III) is favoured since Cr(III) is 1 000 times less toxic and more stable than Cr(VI) in aquatic environments under natural conditions (pH 7, 15-25°C temperature) (Boni and Sbaffoni, 2009). Currently, Cr(VI) contamination in groundwater systems is conventionally treated using the pump-and-treat method which involves the extraction of contaminated water from the aquifer, treatment above ground, and injection of the treated water back into the aquifer (Kurniawan et al, 2006;Watts, 1998).…”

Section: Introductionmentioning

confidence: 99%

Finite difference simulation of biological chromium (VI) reduction in aquifer media columns

Mtimunye

Chirwa

2014

WSA

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A mechanistic mathematical model was developed that successfully traced the Cr(VI) concentration profiles inside porous aquifer media columns. The model was thereafter used to calculate Cr(VI) removal rate for a range of Cr(VI) loadings. Internal concentration profiles were modelled against data collected from intermediate sample ports along the length of the test columns. For the first time, the performance of a simulated barrier was evaluated internally in porous media using a finite difference approach. Parameters in the model were optimised at transient-state and under near steady-state conditions with respect to biomass and effluent Cr(VI) concentration respectively. The best fitting model from this study followed non-competitive inhibition kinetics for Cr(VI) removal with the best fitting steady-state parameters: Cr(VI) reduction rate coefficient, k = 5.2×10 ; and a semi-empirical reaction order, n = 2. The model results showed that post-barrier infusion of biomass into the clean aquifer downstream of the barrier could be limited by depletion of the substrates within the barrier. The model when fully developed will be used in desktop evaluation of proposed in situ biological barrier systems before implementation in actual aquifer systems.

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Section: Introductionmentioning

confidence: 99%

Finite difference simulation of biological chromium (VI) reduction in aquifer media columns

Mtimunye

Chirwa

2014

WSA

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“…The removal efficiency decreased with increase in pH from 5.5 to 9.0. An experiment was conducted in a column reactor by (Boni and Sbaffoni, 2009) for the removal of Cr (VI) from contaminated groundwater by compost based biobarrier comprising of green compost and siliceous gravel as a reactive media. Almost 99% of Cr (VI) removed during the whole activity.…”

Section: Chlorinated Solventsmentioning

confidence: 99%

Role of Microorganisms in Permeable Reactive Bio-Barriers (PRBBs) for Environmental Clean-Up: A Review

2018

Global NEST Journal

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It is an indisputable fact that any environmental clean-up technology generating certain kind of effective result would be easily supported. One of them includes Permeable reactive bio-barrier which is an innovative technology started from 90's to treat a variety of contaminants along the natural gradient flow of groundwater through immobilization or transformation of pollutants into less toxic and harmful form. Despite of any broad acknowledgement, there are lesser known knowledge about use of microorganisms in permeable reactive barriers, mingling of microorganisms with other reactive media and their effect on each other's reactivity. The current review deals with an overview of the types of reactive media used in Permeable Reactive Barriers (PRBs) as well as different bio-barriers (PRBBs) utilized for the treatment of various contaminants, long-term performance of permeable reactive barrier and combination of microorganism and reactive media to look forward for their symbiotic relationship in permeable reactive barrier for environmental remediation.

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“…PRBs는 일반적으로 오염대(contaminant plume)가 존재 하는 지중에 설치하며 지하수 오염대의 수리학적 흐름을 이용, 반응매질(reactive media)과 오염물질의 물리·화학 적 및 생물학적 반응을 유도하여 오염을 제거하는 방법이 다 (Blowes et al, 1997;이승학 외, 2003;Boni and Sbaffoni, 2009 Table 1에 정리 하였다 (Lee et al, 2010). …”

Section: 서 론unclassified

Remediation of PCE-contaminated Groundwater Using Permeable Reactive Barrier System with M0M-Bentonite

Chung¹,

Lee²

2012

Journal of Soil and Groundwater Environment

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The objectives of this research were to study the applicability and limitations of permeable reactive barrier (PRB) for the removal of tetrachloroethylene (PCE) from the groundwater. PRB column tests were conducted using reactive material with Moringa Oleifera Mass -Bentonite (Mom-Bentonite). Most of the PCE in the groundwater was degraded and/or captured (sorpted) in the zone containing activated material (MOM-Bentonite). The removal rate of PCE from the groundwater was 90% and 75% after 30 days and 180 days, respectively. The effect of micro-organisms on the long-term permeability and reactivity of the barrier is not well understood. MOM-Bentonite PRB system in this research has the potential to be developed into an environmentally and economically acceptable technology for the in situ remediation of PCE-contaminated groundwater.

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The potential of compost-based biobarriers for Cr(VI) removal from contaminated groundwater: Column test

Cited by 49 publications

References 20 publications

Finite difference simulation of biological chromium (VI) reduction in aquifer media columns

Finite difference simulation of biological chromium (VI) reduction in aquifer media columns

Role of Microorganisms in Permeable Reactive Bio-Barriers (PRBBs) for Environmental Clean-Up: A Review

Remediation of PCE-contaminated Groundwater Using Permeable Reactive Barrier System with M0M-Bentonite

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