SOLAR PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS IN LOCAL DYEING WASTEWATER USING NEEMMODIFIED GRAPHITIC CARBON NITRIDE (g-C3N4)
- Project Research
- 1-5 Chapters
- Abstract : Available
- Table of Content: Available
- Reference Style: APA
- Recommended for : Student Researchers
- NGN 3000
ABSTRACT
The discharge of dyeing wastewater containing high concentration of contaminants from the local dyeing industry has caused a serious environmental concern. The present study reports the synthesis of graphitic carbon nitride and itsutilization in degradation of dyeing effluent pollutants under solar irradiation. The synthesized g-C3N4 was modified using the aqueous leaves extract of AzadiratchaIndica (Neem plant): a clean, non-hazardous and environmentally friendly procedure (green modification route). The morphology, elemental composition, crystallography, Surface area and adsorption bands of the synthesized modified and unmodified g-C3N4 samples were comprehensively examined using SEM, EDS, XRD, FT-IR and BET characterization techniques. The photo-oxidation of organic pollutants in the local dyeing wastewater by the modified and unmodified g-C3N4nanomaterials under sunlight irradiation in a batch reactor system was tested. The photocatalytic degradation efficiency of the local dyeing wastewater by the photocatalysts was assessed using chemical oxygen demand (COD) as the indicator parameter. Different experimental conditions such as the effects of solution pH, time, and Photocatalyst dosage on the efficiency of COD degradation process were investigated and then optimum conditions were established. The SEM and XRD analysis of the modified and unmodified g-C3N4demontrated the formation of crystalline tri-s-triazine unit and agglomerated morphology. The BET surface analysis displayed that the surface area of the g-C3N4nanopaticles increased from 58.88 cm3 /g to 141.0 cm3 /g upon modification, while the EDS analysis demonstrated the existence of C and N as the major constituents of the as-synthesized nanomaterials. The study found that the modified g-C3N4 nanoparticle exhibited significant higher catalytic activity of 61% COD removal compared to the unmodified g-C3N4nanoprticle (40% COD removal). It was established from the optimization study that pH of 9.8 and photocatalyst dosage of 0.7 g/200ml were the optimum conditions. The experimental data obtained were evaluated ii using three different kinetic models: first order, second order and Behnajady-Modirshahla-Ghanbery (BMG). It was found that the Behnajady-Modirshahla-Ghanbery model best described the data based on the correlation coefficient (R2 ). This study demonstrated that the modified g-C3N4 nanoparticle showed better photocatalytic activity in comparison to the unmodified g-C3N4. The enhancement in performance is because of its high surface area which signifies more active sites for reaction, small bulk diffusion length and strong redox ability of charge carriers.
Related Project Materials
DESIGN AND DEVELOPMENT OF PERSONNEL INFORMATION SYSTEM (A CASE STUDY OF NATIONAL POPULATION COMMISSIO
ABSTRACT
This work intends to provide a computer based system for the maintenance of personnel records of employees in organization. The...
THE USE OF GEOGRAPHIC INFORMATION SYSTEM IN LANDFILL SITES SELECTION
ABSTRACT
This study identifies suitable sites appropriate for solid waste landfill in the vicinity of Jos-North using Re...
DEMOCRACY AND NATIONAL DEVELOPMENT: A CASE STUDY OF BUHARI ADMINISTRATION (2015-2019)
EXCERPT FROM THE STUDY
An overview of the principle of democracy reveals the pursuit of public interest as a cardinal feature of democrac...
EFFECT OF IMPROVISATION OF INSTRUCTIONAL MATERIALS FOR BIOLOGY INSTRUCTION IN SENIOR SECONDARY SCHOOLS
Abstract
This study is on effect of improvisation of instructional materials for biology instruction in senior sec...
A STUDY OF EXECUTIVE–LEGISLATURE RELATIONSHIP IN THE BUDGET PROCESS OF THE 7TH AND 8TH NIGERIA’S NATIONAL ASSEMBLY
Background to the study
Democracy is a process of self-government in which citizens operate in their environment directl...
CHARACTERISATION OF RECYCLED STEEL IN NIGERIA FOR QUALITY ASSESSMENT
ABSTRACT
The chemical and mechanical properties of recycled mild steel from scraps in Nigeria was investigated using the mechanical (stre...
AN EXPLORATION OF INDUSTRY DEMAND FOR SPECIALIZED VOCATIONAL SKILLS
ABSTRACT: Addressing Industry Demand for Specialized Vocational Skills is critical for aligning vocational education with labor market needs....
DISCIPLINE IN THE PUBLIC SERVICE IN NIGERIA
ABSTRACT
The topic of this study was discipline in the public service of Enugu, state. (A Case study of ministry of Ju...
THE EFFECT OF SALARY INCREASE ON THE PRODUCTIVITY OF WORKERS
ABSTRACT
This research work focuses on the role of salary increase as a means of increasing productivit...
FORENSIC ACCOUNTING AND AUDIT AS A PANACEA FOR PREVENTING CORPORATE FRAUD IN NIGERIA
ABSTRACT
This study was carried out to examine Forensic Accounting And Audit As a Panacea For Prev...
