Conveners
WATER_Sanit_Env: PARALLEL
- Nadine Kabengi (Georgia State University)
- Eric Borguet (Temple University)
WATER_Sanit_Env: PARALLEL
- Eric Borguet (Temple University)
- Nadine Kabengi (Georgia State University)
WATER_Sanit_Env: PARALLEL
- There are no conveners in this block
WATER_Sanit_Env: PARALLEL
- There are no conveners in this block
WATER_Sanit_Env: PARALLEL
- There are no conveners in this block
Environmental contamination from anthropogenic activities is often defined by the presence of either legacy or emerging contaminants. Hazardous waste sites associated with legacy contaminants were the focus of environmental remediation activities in the twentieth century. Now, "emerging contaminants" have captured the focus of the environmental community. However, the distinction between...
There is an increasing awareness of the necessity to protect the environment and the need to find innovative solutions to replace or remove different industrial pollutants present in wastewater, complementing the existing physical, chemical and biological techniques used for wastewater treatment. Recently, piezoelectric nanomaterials have been used as catalysts for water purification,...
In this talk, we review our research on the development of next-generation nanofiltration membranes [1] and sorbents [2] for water purification based on few-layer graphene. As far as nanofiltration is concerned, we present a fabrication process in which sonochemically exfoliated few-layer graphene flakes are utilized to fabricate a continuous membrane, in which leaks between juxtaposed flakes...
The presentation will address greenhouse gases decomposition and conversion into biofuels and hydrogen using sustainable catalysts. To this end, biocarbon (biochar) catalysts for NO decomposition (deNOx) and reverse water-gas shift reaction (RWGS) were produced from pyrolyzed (200, 350 and 500 โฆC) fern and willow impregnated with iron and nickel nitrates.
Willow impregnated with iron and...
Abstract
Nigeria is greatly endowed with natural resources and this has led to active mining activities carried out by artisanals leading to the continuous release of untreated wastewater freely into the environment.. Several wastewater treatment techniques such as, reverse osmosis, activated carbon adsorption exhibited low adsorption efficiency, generate toxic sludge and occupy space. This...
Potential Natural Materials for Environmental Conservation, Water, and Sanitation
Author 1: Divin IRAKOMEYE, email: irakomeyedivin200@gmail.com
Author 2: Leonard NIYITANGA, email: ntngleonard@gmail.com
1. University of Rwanda ( Irrigation and drainage/Agriculture engineering, Musanze, Rwanda)
2. University of Rwanda ( Irrigation and drainage/Agriculture engineering, Musanze, Rwanda)
...
Nowadays, one of the main technological challenges that we are facing is the ability to provide a sustainable supply of clean energy and, among all renewable sources, solar energy displays the greatest potential. Recently, the development of novel synthetic strategies has led to the preparation of nanostructured materials displaying unique properties compared to the bulk counterpart systems,...
ABSTRACT
Solar steam generation has received a lot of attention because of its ability to produce clean water with minimal energy consumption. However, obtaining an environmentally friendly, long-lasting, and powerful solar absorber with a practical large-scale system to generate efficient fresh water remains a challenge. Thus, in this work, a new system of graphene oxide-activated...
Determination of Leached Chemicals from End-Of-Life Tires Using EPA Methods
ZIMAKO PHILIP ONYEME1 and JOHN D. ATKINSON1
1Environmental And Water Resources Engineering, University at Buffalo, Buffalo, USA
Corresponding author: John D. Atkinson (atkjdw@buffalo.edu)
Keywords: (End-Of-Life Tires, 6PPD, EPA Methods, Leachates, Contaminants)
Theme: Materials for Manufacturing
Due to the...
The co-digestion of waste activated sludge (WAS) with food waste (FW) has the potential to produce enough biogas to power entire wastewater treatment plant operations and even produce excess power that can be supplied to the grid. The current study evaluates the feasibility of the approach and its applicability to local settings in South Africa. The monodigestion of WAS (Monodigestion) and...
In this study, a nanocomposite consisting of polyaniline doped with 2-napthalenesulfonic acid and decorated with zero-valent nickel nanoparticles (PANI-NSA@Ni(0)) was investigated for its efficacy in removing hexavalent chromium from synthetic effluent. This study concentrated on optimizing adsorption conditions, including pH and dosage, and identifying essential parameters for developing...
This study investigates the corrosion inhibition properties of a synthesized environmentally friendly copolymer composite, Polyethylene glycol L-proline (PEGLP), in a 1 M hydrochloric acid environment. Using gravimetric techniques, we assessed key parameters such as corrosion rate, inhibition efficiency, thermodynamic characteristics, and adsorption behaviour. Our findings indicate that...
In this study, rice husk activated carbon and Mg/Fe layered double hydroxides were synthesized using the double-crucible and co-precipitation methods respectively. Different ratios of magnesium and iron were used and their effectiveness compared. SEM analysis of the layered double hydroxides with different Mg/Fe ratios showed a decrease in particle size with increase in the ratio of magnesium....
Congo red (CR) dye was electrolyzed out of an aqueous solution using graphite and lead dioxide-modified graphite (G/PbO2) as the anode materials in a two-electrode batch reactor cell. Energy dispersive spectroscopy (SEM-EDS) and atomic force microscopy (AFM) were used to analyze the electrodeposited lead dioxide film. According to a comparative study of the anode materials' relative...
The global water pollution crisis, driven by industrial activities like textile dyeing, urgently demands efficient wastewater treatment solutions. This study evaluates the potential of silica derived from coal fly ash as an affordable and effective adsorbent for removing methylene blue (MB) dye from water. The Response Surface Methodology (RSM) and Central Composite Design (CCD) were employed...
Keywords: Hydrolytic crack, poly(ethylene terephthalate), pH effect, subcritical crack growth
Theme: Materials for ENVIRONMENT, WATER, and SANITATION
Poly(ethylene terephthalate) (PET) is a thermoplastic of high-volume applications, and is identified as Number 1 in the Resin Identification Code on single-use packages. The ester bonds in the polymer chains are prone to hydrolysis, but the...
We report the preparation, morphological characterization and photocatalytic studies of silver sulphide, copper sulphide and zinc sulphide nanoparticles. The compounds were prepared from thermolysis of corresponding copper(II), silver(I) and zinc(II) dithiocarbamate complexes single source precursors in different capping agents and at different temperature. The metal sulphide nanoparticles...
Polyethylene terephthalate (PET) fibers are among the most ubiquitous of plastics. Used commonly in textiles, PET fibers are often blended with non-PET components such as dyes, coatings, and trims. These non-PET components disqualify the fibers from being mechanically recycled, leaving chemical recycling as the next best option to manage this waste. However, these non-PET components generate...
Chromium contamination in industrial effluents is a major environmental issue due to its high toxicity and mobility. Natural polymers like polyaniline (PANI) and polypyrrole are commonly used as adsorbents in the removal of heavy metals from wastewater. PANI is particularly at-tractive due to its high conductivity, large surface area, easy and low-cost synthesis, and envi-ronmental stability....
There is global need for optimizing the use of water that results from the increasing demand due to industrial development, population growth, climate change and pollution of natural water resources. One of the solutions is to use reclaimed water in industrial applications that does not require water of potable quality, such as cooling water. However, for cooling water, secondarily (treated)...
Microplastics are a significant emerging environmental pollutant with profound implications for public health, particularly as novel substrates for antimicrobial resistance (AMR) development. Recent studies have shown that microplastics might accommodate not only microbial communities but also chemical contaminants and genetic material containing ARGs (antibiotic-resistant genes) through...
Investigation of the use of Botswana Coal Fly Ash as a material for the adsorption of arsenic from fortified water
1,2 KEDIEMETSE MOTHIBEDI, 1 SAMUEL CHIGOME, 2 NTEBOGENG MOKGALAKA-FLEISCHMANN, 1,3JAMES DARKWA
1Nanomaterials Division, Botswana Institute for Technology Research and Innovation, Private Bag 0082, Maranyane House, Plot 50654, Machel Drive, Gaborone, Botswana
2Department of...
In this study, Solar energy was applied in photocatalytic degradation of organic pollutants in domestic waste water using nanoparticles of titanium dioxide (TiO2) deposited on thin films using electrophoretic deposition (EPD) technique. The EPD suspension related parameters and deposition conditions were first optimized for good quality film deposits. The suspension stability and deposition...
Clean water is an essential requirement for all living beings. However, this becomes difficult to attain as the aquatic systems are contaminated with toxic heavy metals which pose a significant public and environmental health risks. Numerous approaches have been studied for the development of effective adsorbents for the removal of heavy metals from wastewater. In this study, magnetic...
This study examines the effectiveness of an eco-friendly copolymer, Polyethylene glycol L-proline (PEGLP), as a corrosion inhibitor for mild steel in a 1M HCl solution, utilizing polarization and impedance spectroscopy techniques. To evaluate the protective effects of PEGLP, surface morphology was analysed using atomic force and scanning electron microscopy. Various inhibitor concentrations...
Approximately 15% of the global population, lack access to safe drinking water due to inadequate sanitation and the high cost of effective water purification systems. While research has produced various purification technologies, many of these solutions remain prohibitively expensive for developing countries. Existing affordable porous ceramic filters, which could help address these issues,...
The combustion of coal generates fly ash, a waste containing valuable oxides of Si and Al, which are essential for zeolite synthesis. This study compares two pretreatment methodsโacid refluxing and acid fusionโto reduce Fe and Ca levels in fly ash before zeolite synthesis. In acid refluxing, fly ash is mixed with hydrochloric acid (HCl) and refluxed, while in acid fusion, fly ash and acid are...
Acetaminophen is a widely used over-the-counter pain reliever and fever reducer. However, its extensive use has led to its presence as a waste in water systems, causing environmental and health impacts. This study investigated the competitive adsorption of acetaminophen using macadamia nutshell-activated carbon as an adsorbent. To determine the effects of initial concentration, contact time,...
The sequestration of heavy metals from multicomponent sorption media has become critical due to the noxious effects of heavy metals on the natural environment and subsequently on human health as well as all life forms. The abatement of heavy metals using bio-adsorbents is one of the efficient and affordable approaches for treating water and wastewater. In this study, the interactive effect of...
Hello good afternoon. Attached is my abstract for your necessary action. Thank you
A novel plant-mediated silver-titania supported on sodium functionalized bentonite, Ag-TiO2/Na-BNT nanocomposite was synthesized via a combined sol-gel-wet impregnation route. The as-synthesised nanocomposite was characterized using different techniques of X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), UV-Vis spectroscopy, Scanning electron microscopy-energy dispersive x-ray SEM/EDX...
The growing demand for clean and sustainable water resources has driven extensive research in the field of desalination technologies. This current study explores the potential of using discarded cigarette butts (CBs) as a raw polymer material for phase-inverted cellulose acetate-silver/copper oxide (CA-Ag/CuO) reverse osmosis membranes for seawater desalination. The incorporated Ag/CuO...
Freshwater contamination by heavy metals poses significant threats to human health and the ecosystem. This research explores the use of corncob-based biochar-cellulosic matrix for remediation of heavy metals from wastewater. Biochar-cellulosic composites were prepared in varying ratios (0:1, 1:2, 2:3, and 1:1) of biochar to cellulose. The physicochemical properties of wastewater and heavy...
HENRIETTA IJEOMA KELLE1ยทEMEKA CHIMA OGOKO1ยทOLUMUYIWA AKINTOLA1ยท NNABUK OKON EDDY2
1 National Open University of Nigeria (Department of Chemistry/Faculty of Sciences, Abuja, Nigeria)
2 University of Nigeria, Nsukka (Department of Pure and Industrial Chemistry/Faculty of Physical Sciences, Enugu State, Nigeria)
Corresponding author: Henrietta Ijeoma Kelle ...
In recent years, carbon dots, a relatively new class of nanomaterials, have come to light. Carbon dots are carbon, oxygen, nitrogen and hydrogen containing materials with the first two elements typically accounting for ~80% of their elemental composition. Moreover, they are typically water dispersible and can be prepared from an abundant number of inexpensive sources including small molecules...
Pollution of our environment because of industrialization and other human activities is a growing concern due to the harmful effects of most chemicals released into the environment. These chemicals, ultimately find their way into the human body with a potential of causing adverse health effects. As a way of protecting the one health trilogy (environment, human and animal health), their...
The safety of food and water, particularly in low-income countries (LICs), remains a critical concern due to disease outbreaks such as the recent South African cholera epidemic, which originated from Malawi. The cholera outbreak caused by Vibrio cholerae spread through contaminated water consumption and resulted in significant fatalities in the SADC region of Africa. The current conventional...
The improper disposal of wastewater from textile industries is a critical global concern that adversely affects both the environment and human health. While these industries play a vital role in the global economy, they are significant contributors to pollution, particularly in regions like China and South Africa. The textile sector generates approximately 70 million tons of synthetic dyes...
Separately, the flowers, seeds, and leaves of Moringa oleifera were used to produce zirconia nanoparticles (ZrO2-NPs) via a green and ecofriendly similar approaches. All the samples were annealed in air for 2 h at 700 ยฐC. Several characterization techniques, such as X-ray diffraction (XRD), Fourier transform infrared microscopy (FTIR), room temperature photoluminescence (PL), scanning electron...
The quest for alternative sustainable materials for water treatment has significantly increased due to the adverse health and environmental implications associated with the fabrication process of most conventional materials. Moreover, ensuring sustainable material use in water treatment directly responds to the call for sustainable water management stipulated in the United Nations Sustainable...
Water contamination by industrial effluents containing dyes is prevalent in urban industrialised areas. The study presents an investigation results on degradation of bromocresol green dye using calcium oxide nanoparticles synthesized from gigas shells as a photocatalyst. The catalyst was synthesized through a solโgel process involving the conversion of the CaCO3 in the shells to CaO...
The adsorptive behaviour of Iron-Tungstate (FeWO4) nanoparticles for the removal of copper, nickel, cadmium, chromium and lead from hospital wastewater was investigated. FeWO4 nanoparticles were synthesised by a simple sol-gel technique using sodium tungstate dihydrate, iron(II) sulfate and distiled water as solvent based on response surface methodology experimental design. The produced...
Abstract:
Significant environmental problems arise when sludge from industrial water effluent treatment is disposed away, hence economical and sustainable management strategies must be developed. This study aims to simultaneously solve the problem of sludge disposal and investigate value-added applications of the generated material by presenting a novel approach for synthesizing nano-zeolite...
Most polluted environments, most challengingly, aerosol types, contain cocktail of different toxicants. Multi- templating of matrices has been the recent target by researchers in a bid to solving complex mixed-toxicant challenges using single or common remediation systems. This investigation looks at the effect of such multi-templated system vis-a-vis the synthesis by non-covalent interaction,...
UV/Fenton Tetracycline (TC) wastewater treatment was carried out using a plate fixed bed photocatalytic reactor for practical application. Composite TiO2/Fe2O3 was immobilized on Al2SiO5 fiber board and (TiO2/Fe2O3@Al2SiO5) were fabricated using calcination method. The resulting supported catalyst (TiO2/Fe2O3@Al2SiO5) was applied to the plate fixed bed continuous flow reactor with TC as the...
