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Performance of Horizontal Roughing Filter for Colour Removal of Palm Oil Mill Effluent Using Natural Adsorbent

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Abstract

Palm oil wastewater treatment was investigated via a filtration process using raw and calcinated limestone. Column studies were conducted using different limestone sizes (4, 12, and 20 mm), calcination temperature (800 °C and 600 °C) and various filtration rates (20, 60, and 100 mL/min), and a comparison was made with raw limestone under similar conditions. The response surface methodology using central composite design was employed to optimize the process parameter. The experimental data was analyzed via the analysis of variance to identify the interaction between the parameters and the dependent parameter. The results showed that the colour removal increased with an increase in temperature (800 °C) for filtration rate of 20 mL/min, the retention time of 317 min and the smaller size (4 mm) of limestone, and decreased with an increase in the filtration rate and size of raw limestone. Based on the achieved results, the optimum condition for colour removal was at temperature 800 °C (61%), 600 °C (56%) and raw limestone (49%), respectively, with the same experimental setup (flow rate of 20 mL/min and limestone size of 4 mm). According to the statistical analysis, quadratic models demonstrated significant values (0.000) for the response (colour). Freundlich and Langmuir isotherms also provided good correlation coefficient for colour removal. The data conforms to the Langmuir isotherm with the best fit model (R2 = 0.7).

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Abbreviations

ANOVA:

Analysis of variance

AP:

Adequate Precision

APHA:

American Public Health Association

AWWA:

American Water Works Association

BET:

Brunauer-Emmett-Teller

BOD:

Biological oxygen demand

CaO:

Lime

CaCO3 :

Calcium Carbonate

COD:

Chemical oxygen demand

°C:

Degrees Celsius

CCD:

Central composite design

CL:

Calcinated limestone

CV:

Coefficient of variance

DOE:

Department of Environment

Fe2O3 :

Ferric oxide

Fig:

Figure

g:

Grams

ha:

Hectare

HRF:

Horizontal roughing filter

HRT:

Hydraulic retention time

kg:

kilogram

L:

Liter

LOF:

Lack of Fit

LS:

Limestone

mm:

millimeters

mg/L:

milligrams per liter

MgO:

Magnesium oxide

m2/g:

Square meter per gram

%:

Percent

POME:

Palm oil mill effluent

pH:

Potential hydrogen

RL:

Raw Limestone

RSM:

Response Surface Methodology

SD:

Standard deviation

SEM:

Scanning electron microscopy

SiO2 :

Silicon dioxide

SS:

Suspended Solid

XRD:

X-Ray Diffraction

Cc/g:

Cubic centimeter per gram

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Acknowledgements

This research was awarded Universiti Sains Malaysia Short-Term Grant (Grant No. 304/ PAWAM/60311001). which is belong to the Solid Waste Management group, Engineering Campus, USM.

Funding

The research leading to these results received funding from Universiti Sains Malaysia Short-Term Grant under Grant Agreement No 304/ PAWAM/60311001.

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Authors

Contributions

Formal analysis and investigation; Writing - original draft preparation: Dr. Arezoo Fereidonian Dashti.

Supervisor and co-supervisor: Prof. Mohd Nordin Adlan; Prof. Hamidi Abdul Aziz.

Methodology: Ali Huddin Ibrahim.

Corresponding author

Correspondence to Arezoo Fereidonian Dashti.

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The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported in this paper.

Conflict of Interest

The authors notify that there are no conflicts of interest.

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Dashti, A.F., Aziz, H.A., Adlan, M.N. et al. Performance of Horizontal Roughing Filter for Colour Removal of Palm Oil Mill Effluent Using Natural Adsorbent. Environ. Process. 8, 1267–1287 (2021). https://doi.org/10.1007/s40710-021-00520-4

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  • DOI: https://doi.org/10.1007/s40710-021-00520-4

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