Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant
In order to evaluate the efficiency of sludge dewatering, specific parameters such as settling velocity (Vs) and sludge volume index (SVI) have to be measured. However, problems arise when these parameters are used for the evaluation of efficiency using M. oleifera as natu...
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2015
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| Online Access: | http://irep.iium.edu.my/46440/ http://irep.iium.edu.my/46440/1/46440.pdf |
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iium-464402017-07-12T04:39:55Z http://irep.iium.edu.my/46440/ Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant Abdulazeez, Qabas Marwan Jami, Mohammed Saedi Alam, Md. Zahangir Iwata, Masashi TP155 Chemical engineering In order to evaluate the efficiency of sludge dewatering, specific parameters such as settling velocity (Vs) and sludge volume index (SVI) have to be measured. However, problems arise when these parameters are used for the evaluation of efficiency using M. oleifera as natural phytocoagulant or sludge conditioner. Using statistical optimization, it was found that despite good results of Vs and SVI, the concentration of residual suspended solids in supernatant liquid or turbidity was very high. Thus, turbidity of supernatant liquid was selected as a criteria to evaluate the efficiency of dewatering process. In this research, two optimization steps were run under two factors for each optimization; i.e., mixing time and concentration of M. oleifera seeds extract with NaCl (1 M). The range of these factors was (100 – 1000 mg/L) for M. oleifera seeds extract concentration, and (5 – 30 min) for mixing time. In the first optimization, Vs and turbidity were used as responses. While in the second optimization SVI and turbidity were used as response parameters. Both optimization steps were run under (pH = 7), mixing speed (120 rpm) for the first minute, and (40 rpm) during the rest period of experiment. By using Design-Expert software v9, for the first optimization of settling velocity, the optimum Vs was found to be (1 cm/min) and the turbidity of the supernatant was (350.7 NTU). Whereas in the optimization of the sludge volume index (SVI), the optimum value was (24.7 mL/g), corresponding turbidity value of suspended solids in supernatant liquid was (341.5 NTU). Since the turbidity was very high, second optimization by redesigning the factors was conducted resulting in optimum values of dosage of (462.8 mg/L), mixing time of (13.4 min), turbidity of (67.2 NTU) (further (80.2 %) reduction compared to the (350.7 NTU) of the first optimization) and settling velocity of (0.93 cm/min) were obtained. For the optimization of SVI, dosage of (447.5 mg/L) and mixing time of (8.3 min) gave (33.5 mL/g) of SVI with (67.2 NTU). These optimized dewatering parameters can be used to improve the efficiency of sludge dewatering. 2015 Conference or Workshop Item NonPeerReviewed application/pdf en http://irep.iium.edu.my/46440/1/46440.pdf Abdulazeez, Qabas Marwan and Jami, Mohammed Saedi and Alam, Md. Zahangir and Iwata, Masashi (2015) Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant. In: 4th International Conference on Advances in Engineering Sciences and Applied Mathematics (ICAESAM'2015), 8th-9th Dec. 2015, Kuala Lumpur, Malaysia. |
| repository_type |
Digital Repository |
| institution_category |
Local University |
| institution |
International Islamic University Malaysia |
| building |
IIUM Repository |
| collection |
Online Access |
| language |
English |
| topic |
TP155 Chemical engineering |
| spellingShingle |
TP155 Chemical engineering Abdulazeez, Qabas Marwan Jami, Mohammed Saedi Alam, Md. Zahangir Iwata, Masashi Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant |
| description |
In order to evaluate the efficiency of sludge
dewatering, specific parameters such as settling velocity (Vs) and
sludge volume index (SVI) have to be measured. However, problems
arise when these parameters are used for the evaluation of efficiency
using M. oleifera as natural phytocoagulant or sludge conditioner.
Using statistical optimization, it was found that despite good results
of Vs and SVI, the concentration of residual suspended solids in
supernatant liquid or turbidity was very high. Thus, turbidity of
supernatant liquid was selected as a criteria to evaluate the efficiency
of dewatering process. In this research, two optimization steps were
run under two factors for each optimization; i.e., mixing time and
concentration of M. oleifera seeds extract with NaCl (1 M). The
range of these factors was (100 – 1000 mg/L) for M. oleifera seeds
extract concentration, and (5 – 30 min) for mixing time. In the first
optimization, Vs and turbidity were used as responses. While in the
second optimization SVI and turbidity were used as response
parameters. Both optimization steps were run under (pH = 7), mixing
speed (120 rpm) for the first minute, and (40 rpm) during the rest
period of experiment. By using Design-Expert software v9, for the
first optimization of settling velocity, the optimum Vs was found to
be (1 cm/min) and the turbidity of the supernatant was (350.7 NTU).
Whereas in the optimization of the sludge volume index (SVI), the
optimum value was (24.7 mL/g), corresponding turbidity value of
suspended solids in supernatant liquid was (341.5 NTU). Since the
turbidity was very high, second optimization by redesigning the
factors was conducted resulting in optimum values of dosage of
(462.8 mg/L), mixing time of (13.4 min), turbidity of (67.2 NTU)
(further (80.2 %) reduction compared to the (350.7 NTU) of the first
optimization) and settling velocity of (0.93 cm/min) were obtained.
For the optimization of SVI, dosage of (447.5 mg/L) and mixing time
of (8.3 min) gave (33.5 mL/g) of SVI with (67.2 NTU). These
optimized dewatering parameters can be used to improve the
efficiency of sludge dewatering. |
| format |
Conference or Workshop Item |
| author |
Abdulazeez, Qabas Marwan Jami, Mohammed Saedi Alam, Md. Zahangir Iwata, Masashi |
| author_facet |
Abdulazeez, Qabas Marwan Jami, Mohammed Saedi Alam, Md. Zahangir Iwata, Masashi |
| author_sort |
Abdulazeez, Qabas Marwan |
| title |
Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant |
| title_short |
Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant |
| title_full |
Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant |
| title_fullStr |
Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant |
| title_full_unstemmed |
Analysis of the efficiency of sludge dewatering using Moringa oleifera as natural phytocoagulant |
| title_sort |
analysis of the efficiency of sludge dewatering using moringa oleifera as natural phytocoagulant |
| publishDate |
2015 |
| url |
http://irep.iium.edu.my/46440/ http://irep.iium.edu.my/46440/1/46440.pdf |
| first_indexed |
2023-09-18T21:06:08Z |
| last_indexed |
2023-09-18T21:06:08Z |
| _version_ |
1777410945115488256 |