Electrocoagulation process using raw sewage for treatment and energy production

Due to the massive growth of Malaysian population, sewage water has become one of the major water pollution in Malaysia. Various physiochemical and biological technique have been employed to treat sewage water such as aerobic and anaerobic biological treatment, membrane filtration, adsorption, chemi...

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Main Author:	Mohd Nasrullah, Zulkifli
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/37061/1/CD7244_ELECTROCOAGULATION%20PROCESS%20USING%20RAW%20SEWAGE%20FOR%20TREATMENT%20AND%20ENERGY%20PRODUCTION.pdf
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id	my-ump-ir.37061
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spelling	my-ump-ir.370612023-02-20T07:34:17Z Electrocoagulation process using raw sewage for treatment and energy production 2013-04 Mohd Nasrullah, Zulkifli TA Engineering (General). Civil engineering (General) Due to the massive growth of Malaysian population, sewage water has become one of the major water pollution in Malaysia. Various physiochemical and biological technique have been employed to treat sewage water such as aerobic and anaerobic biological treatment, membrane filtration, adsorption, chemical coagulation and many others methods but either they took a long period of time or needed a large amount of chemical substance, both ways are less effective in treating sewage. The removal of pollutants from effluents by electrocoagulation (EC) has become an attractive method in recent years. This electrochemical process offer some distinctive advantages, including effects due to the production of polyvalent cations from the oxidation of corrodible anodes (like Fe2+ and Al3+) as a coagulant agent and the production of electrolysis gases. The gas bubbles can carry the pollutant to the top of the solution where it can be more easily collected and removed. Therefore, EC process has been studied to treat sewage water and to determine the effect of various operating parameters such as electrode types, operating time, current intensity, inter-electrode spacing and pH to evaluate the possible treatment efficiency. It was found that the application of high current intensity (20 A, 25A and 30 A) is more effective in treating sewage than using low current (1 A, 2A and 3 A). Aluminum hydroxypolymeric species formed during an earlier stage of the operation efficiently remove sewage molecules by precipitation, and in a subsequent stage, Al(OH)3 flocs trap colloidal precipitates and make solid−liquid separation easier during the flotation stage. A Response Surface Method (RSM) showed that the optimum condition of COD, BOD and SS removal was obtained 29.09 A of current, 29.86 minutes of operating time, 10.71 mm of inter-electrode distance and pH value of 7.04. Light microscopy result shows more aggregation of sewage particles occurs with longer treatment period and higher current applied to the EC system. High production of hydrogen gas obtained from experiment in 60 seconds by high current application. The study is important to establish a sustainable clean energy in order to implement low cost treatment in sewage treatment. 2013-04 Thesis http://umpir.ump.edu.my/id/eprint/37061/ http://umpir.ump.edu.my/id/eprint/37061/1/CD7244_ELECTROCOAGULATION%20PROCESS%20USING%20RAW%20SEWAGE%20FOR%20TREATMENT%20AND%20ENERGY%20PRODUCTION.pdf pdf en public masters Universiti Malaysia Pahang Faculty of Civil Engineering & Earth Resources Zularisam, Abdul Wahid
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
advisor	Zularisam, Abdul Wahid
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Mohd Nasrullah, Zulkifli Electrocoagulation process using raw sewage for treatment and energy production
description	Due to the massive growth of Malaysian population, sewage water has become one of the major water pollution in Malaysia. Various physiochemical and biological technique have been employed to treat sewage water such as aerobic and anaerobic biological treatment, membrane filtration, adsorption, chemical coagulation and many others methods but either they took a long period of time or needed a large amount of chemical substance, both ways are less effective in treating sewage. The removal of pollutants from effluents by electrocoagulation (EC) has become an attractive method in recent years. This electrochemical process offer some distinctive advantages, including effects due to the production of polyvalent cations from the oxidation of corrodible anodes (like Fe2+ and Al3+) as a coagulant agent and the production of electrolysis gases. The gas bubbles can carry the pollutant to the top of the solution where it can be more easily collected and removed. Therefore, EC process has been studied to treat sewage water and to determine the effect of various operating parameters such as electrode types, operating time, current intensity, inter-electrode spacing and pH to evaluate the possible treatment efficiency. It was found that the application of high current intensity (20 A, 25A and 30 A) is more effective in treating sewage than using low current (1 A, 2A and 3 A). Aluminum hydroxypolymeric species formed during an earlier stage of the operation efficiently remove sewage molecules by precipitation, and in a subsequent stage, Al(OH)3 flocs trap colloidal precipitates and make solid−liquid separation easier during the flotation stage. A Response Surface Method (RSM) showed that the optimum condition of COD, BOD and SS removal was obtained 29.09 A of current, 29.86 minutes of operating time, 10.71 mm of inter-electrode distance and pH value of 7.04. Light microscopy result shows more aggregation of sewage particles occurs with longer treatment period and higher current applied to the EC system. High production of hydrogen gas obtained from experiment in 60 seconds by high current application. The study is important to establish a sustainable clean energy in order to implement low cost treatment in sewage treatment.
format	Thesis
qualification_level	Master's degree
author	Mohd Nasrullah, Zulkifli
author_facet	Mohd Nasrullah, Zulkifli
author_sort	Mohd Nasrullah, Zulkifli
title	Electrocoagulation process using raw sewage for treatment and energy production
title_short	Electrocoagulation process using raw sewage for treatment and energy production
title_full	Electrocoagulation process using raw sewage for treatment and energy production
title_fullStr	Electrocoagulation process using raw sewage for treatment and energy production
title_full_unstemmed	Electrocoagulation process using raw sewage for treatment and energy production
title_sort	electrocoagulation process using raw sewage for treatment and energy production
granting_institution	Universiti Malaysia Pahang
granting_department	Faculty of Civil Engineering & Earth Resources
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/37061/1/CD7244_ELECTROCOAGULATION%20PROCESS%20USING%20RAW%20SEWAGE%20FOR%20TREATMENT%20AND%20ENERGY%20PRODUCTION.pdf
_version_	1783732260249272320

Electrocoagulation process using raw sewage for treatment and energy production

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