This study compared the use of activated carbon to polish three different effluent streams from a metalworking fluid treatment process. The streams were: (1) before the bioreactor, (2) after the bioreactor, and (3) after microfiltration of the bioreactor effluent. Activated carbon was most effective when used to treat the stream directly after the bioreactor, removing COD and color while avoiding blockage issues seen with other streams. Scaling the treatment to an industrial system was also demonstrated to be feasible.
Hydrothermal Assisted Microwave Pyrolysis of Water Hyacinth for Electrochemic...drboon
We develop ‘green’ approach to prepare conductive carbon material from water hyacinth (Eichhornia crassipes) powder for use in electrochemical capacitor device. The features on morphology, crystallography and surface functionality were analyzed based on SEM, XRD and FTIR instrumentation, respectively. The electrical conductivities were measured using four-point probe. Electrochemical properties were studied using cyclic voltammetry. SEM analyses indicated the existence of nanoparticles in the carbon samples. XRD analysis showed that carbon sample had sharp peaks indicating crystallite carbon and sylvite. FTIR analysis showed that the carbon have common surface functionalities which also can be found in other conductive carbon samples. The electrical conductivities test showed that the carbon had 0.001–1.5 S cm-1 of conductivity. The shape of the cyclic voltammograms were typical for carbon electrode that use in electrochemical capacitor.
Presentation given by Professor Colin Snape from University of Nottingham on "Performance Enhanced Activated Spherical Carbon Adsorbents for CO2 Capture" in the Capture Technical Session on Solid Adsorption at the UKCCSRC Biannual Meeting - CCS in the Bigger Picture - held in Cambridge on 2-3 April 2014
Hydrothermal Assisted Microwave Pyrolysis of Water Hyacinth for Electrochemic...drboon
We develop ‘green’ approach to prepare conductive carbon material from water hyacinth (Eichhornia crassipes) powder for use in electrochemical capacitor device. The features on morphology, crystallography and surface functionality were analyzed based on SEM, XRD and FTIR instrumentation, respectively. The electrical conductivities were measured using four-point probe. Electrochemical properties were studied using cyclic voltammetry. SEM analyses indicated the existence of nanoparticles in the carbon samples. XRD analysis showed that carbon sample had sharp peaks indicating crystallite carbon and sylvite. FTIR analysis showed that the carbon have common surface functionalities which also can be found in other conductive carbon samples. The electrical conductivities test showed that the carbon had 0.001–1.5 S cm-1 of conductivity. The shape of the cyclic voltammograms were typical for carbon electrode that use in electrochemical capacitor.
Presentation given by Professor Colin Snape from University of Nottingham on "Performance Enhanced Activated Spherical Carbon Adsorbents for CO2 Capture" in the Capture Technical Session on Solid Adsorption at the UKCCSRC Biannual Meeting - CCS in the Bigger Picture - held in Cambridge on 2-3 April 2014
In this work, I am showing a faithful atomistic process of estimating the oxygen migration energetics within BSCF, oxygen migration energy exhibit a strong dependence on different local atomic structures of this doped perovskites. In addition, DFT calculations exhibit the reason of cubic phase stability of this doped perovskite in variable oxygen concentration.
M.Sc. Chemical Engineering Thesis Defense (Omer Farooqi)Omer Farooqi
This is the presentation for my M.Sc. research thesis. I worked on a novel electrode preparation method to carry out voltammetry in order to detect heavy metals in water.
The most difficult goal in the next few decades is the replacement of conventional petro-based fuels with more sustainable fuels that can be used in the existing infrastructure. By the use of Renewable energy or nuclear energy, CO2 and H2O can be recycled into liquid hydrocarbon fuels (the reverse of fuel combustion). Capture of CO2 from the atmosphere will form a close carbon-neutral fuel cycle loop. This article also reviews the aspects regarding thermodynamics involved, involved mechanisms and possible technological pathways for recycling CO2 into fuels using renewable energy. These pathways can be broken into three staged- CO2 capture from atmosphere, H2O and CO2 dissociation, and fuel synthesis.
Anaerobic-aerobic treatment of municipal sewage using high Performance Levapor Carriers. It offers remarkable smaller foot print, bio gas production and lower sludge production compared to aerobic treatment reducing unit treatment cost.
In this work, I am showing a faithful atomistic process of estimating the oxygen migration energetics within BSCF, oxygen migration energy exhibit a strong dependence on different local atomic structures of this doped perovskites. In addition, DFT calculations exhibit the reason of cubic phase stability of this doped perovskite in variable oxygen concentration.
M.Sc. Chemical Engineering Thesis Defense (Omer Farooqi)Omer Farooqi
This is the presentation for my M.Sc. research thesis. I worked on a novel electrode preparation method to carry out voltammetry in order to detect heavy metals in water.
The most difficult goal in the next few decades is the replacement of conventional petro-based fuels with more sustainable fuels that can be used in the existing infrastructure. By the use of Renewable energy or nuclear energy, CO2 and H2O can be recycled into liquid hydrocarbon fuels (the reverse of fuel combustion). Capture of CO2 from the atmosphere will form a close carbon-neutral fuel cycle loop. This article also reviews the aspects regarding thermodynamics involved, involved mechanisms and possible technological pathways for recycling CO2 into fuels using renewable energy. These pathways can be broken into three staged- CO2 capture from atmosphere, H2O and CO2 dissociation, and fuel synthesis.
Anaerobic-aerobic treatment of municipal sewage using high Performance Levapor Carriers. It offers remarkable smaller foot print, bio gas production and lower sludge production compared to aerobic treatment reducing unit treatment cost.
Basic Thermal Power Plant Chemistry, for Operational Staff.Syed Aqeel Ahmed
Understand the basics of Water Quality Control to avoid the scale corrosion and biological growth in the Power plant system, and to operate the mentioned at max performance.
Understand the troubleshooting events to the plant chemistry system
suspended growth bio treatments - BOD and Nitrification
Poster desal italy
1. USE OF ACTIVATED CARBON TO POLISH EFFLUENT
FROM METALWORKING TREATMENT PLANT:
COMPARISON OF DIFFERENT STREAMS
Nidal Hilala
*, Gerald Buscab
, Fernando Rozadac
and Nick Hankinsa
a-Centre for Clean Water Technologies, The University of Nottingham UK
b- Environmental Technology Centre, The University of Nottingham UK
c-Institute of Natural Resources, University of Leon Spain
INTRODUCTIONINTRODUCTION
Waste metalworking fluids are toxics and with a very high COD.Waste metalworking fluids are toxics and with a very high COD. In response to stringent legislation and increasing disposal cost designed a completeIn response to stringent legislation and increasing disposal cost designed a complete
process for metalworking fluid remediation was design, using membrane technology and bioremediation. The system produces 2 streams, a recoveredprocess for metalworking fluid remediation was design, using membrane technology and bioremediation. The system produces 2 streams, a recovered
oil with a calorific value ofoil with a calorific value of 42kJ/g42kJ/g and an aqueous phase that post bioreactor has a CODand an aqueous phase that post bioreactor has a COD 98% lower98% lower then the original waste. Nevertheless, loweringthen the original waste. Nevertheless, lowering
further the effluent COD appeared to be essential for process water recovery. Therefore, the team proposed to study the feasibility of using Activatedfurther the effluent COD appeared to be essential for process water recovery. Therefore, the team proposed to study the feasibility of using Activated
Carbon to polish the aqueous effluent. 3 streams were simultaneously studied and compared:Carbon to polish the aqueous effluent. 3 streams were simultaneously studied and compared:
(-e) Before the bioreactor, (-eB) After Bioreactor and (-eBF) After Bioreactor effluent micro-filtered(-e) Before the bioreactor, (-eB) After Bioreactor and (-eBF) After Bioreactor effluent micro-filtered
Acknowledgments:We thank the UK Engineering and Physical Sciences Research Council and CARDEV International Ltd for funding this work.
eB
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0 10000 20000 30000 40000 50000
V o l u me t r e a t e d ( m L )
eBF
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V o l u m e t r e a t e d ( m L )
e
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0 5000 10000 15000 20000 25000 30000 35000
V o l u m e t r e a t e d ( m L )
Co (mg/L)
Cs (mg/L)
feed average
1m
1m
0.7 l/day 500 l/day
Inlet flow rate x 715
Outlet flow rate x 715
Surface x 715
Number of columns
x 715
Flux kept constant
Lab scale Industrial scale
Height : 1m 1m
Diameter: 3cm 45cm
Mass of AC: 0.190 kg 151 kg
1m
1m
0.7 l/day 500 l/day
Inlet flow rate x 715
Outlet flow rate x 715
Surface x 715
Number of columns
x 715
Flux kept constant
Lab scale Industrial scale
Height : 1m 1m
Diameter: 3cm 45cm
Mass of AC: 0.190 kg 151 kg
Complete treatment system showing where Activated Carbon test were carried out
0
100
200
300
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0 200 400 600 800 1000
Ce (mg/L)
qe(mg/g)
eBF
eB
e
Adsorbate Qº (mg/g) K L (L/mg) R
2
n K F
e 345.0 0.007 0.994 2.1 23.11
eB 400.0 0.033 0.928 1.9 17.05
eBF 625.0 0.014 0.992 1.5 9.06
R
2
0.929
0.989
0.992
FreundlichLangmuir
Fittings to Langmuir’s and Freundlich’s models
Before activated carbon After activated carbon
Effluent -e -eB -eBF -e -eB -eBF
pH 9.2 8.2 8.2 7.7 7.9 8.2
Turbidity (NTU) 1.3 17.6 0.05 5.5 15 1.1
COD (mg/l) 7300 1150 1000 840 85 350
Effluents characteristics before and after AC treatment
Scale-up of the activated carbon column to fit the industrial system
ConclusionConclusion
The activated carbon has been proven to be effective in removing theThe activated carbon has been proven to be effective in removing the
COD and the colour of each effluent.COD and the colour of each effluent.
The absorption column used straight after the membrane system, by-The absorption column used straight after the membrane system, by-
passing the bioreactor, showed a good removal capacity but the columnpassing the bioreactor, showed a good removal capacity but the column
has been subject to major bacterial development leading to a completehas been subject to major bacterial development leading to a complete
blockage of the column.blockage of the column.
The results clearly show that using the activated carbon straight after theThe results clearly show that using the activated carbon straight after the
bioreactorbioreactor (-eB)(-eB) is theis the best solutionbest solution. Detached microorganisms from the. Detached microorganisms from the
bioreactor colonise the AC column enhance considerably the columnbioreactor colonise the AC column enhance considerably the column
performance without over developing and without blocking the column.performance without over developing and without blocking the column.
Break through curve for the three different types of effluent
1 Effluent
2 Ultrafiltration
3 Nanofiltration (-e)
4 Bioreactor (-eB)
5 Concentrate treatment
6 Buffering tank
7 0.45 μm filter (-eBF)
6
oil
7
3
-eB-e
4
Activated Carbon columns
Bioreactor recycling
loop
-eBF
5
1 2
1 Effluent
2 Ultrafiltration
3 Nanofiltration (-e)
4 Bioreactor (-eB)
5 Concentrate treatment
6 Buffering tank
7 0.45 μm filter (-eBF)
6
oil
7
3
-eB-e
4
Activated Carbon columns
Bioreactor recycling
loop
-eBF
5
1 2