Tejraj M Aminabhavi

Texas State University | TxSt · Department of Chemistry & Biochemistry

Even today, most biomarker testing is executed in centralized, dedicated laboratories using bulky instruments, automated analyzers, and increased analysis time and expenses. The development of miniaturized, faster, low-cost microdevices is immensely anticipated for substituting for these conventional laboratory-oriented assays and transferring diag...

Microbial fuel cells (MFCs) have emerged and implemented as eco-friendly technologies with the potential for simultaneous removal of contaminants from (waste)waters and generation of bioelectricity as a green and renewable source of energy. However, little evidence is available for large-scale applications of these technologies due to technical and...

Engineered nanomaterials (ENMs) have been introduced into the market for a wide range of applications. As per the literature review, the fabrication of new generations of ENMs is starting to comply with environmental, economic, and social criteria in addition to technical aspects to meet sustainability criteria. At this stage, identification of the...

The macromolecular architectures, namely mannose-based methacrylate acetyl-mannopyranoside and PEG block copolymers (AB type copolymer [PEG-b-PMAM], poly(ethyleneglycol)-b-poly(methacryl-2,3,4,6-tetra-O-acetyl-D-mannopyranoside and ABA type copolymer [PMAM-b-PEG-b-PMAM], poly(methacryl-2,3,4,6-tetra-O-acetyl-D-mannopyranoside-b-poly(ethyleneglycol)...

Membrane filtration has been considered a popular method for the treatment of (waste)waters originating from various industrial and nonindustrial sources. They have also been recently used for the removal of PhACs as an emerging environmental concern. This chapter aims to provide an overview of various membrane filtration techniques (i.e., forward...

The presence of pharmaceutically active compounds (PhACs) in wastewaters originating from industrial and nonindustrial points can cause severe environmental issues, such as toxicity to aquatic organisms, even at relatively low concentrations. By affecting the performance of the primary producers, the overall function of the ecosystem can also be si...

The release of pharmaceutically active compounds (PhACs) into water bodies is among the current concerns of the scientific community considering the associated environmental and health factors, such as the toxic effects on aquatic microorganisms as well as the generation of antibiotic-resistant bacteria (ARBs) and antibiotic resistance genes (ARGs)...

Advanced oxidation processes (AOPs) have been considered in recent decades as efficient techniques for the efficient removal of recalcitrant and nonbiodegradable organic compounds from polluted (waste)waters. The basis of these methods is the generation of powerful oxidation agents in the medium to attack the target pollutants. Such methods can be...

There have been concerns regarding the discharge and presence of pharmaceutically active compounds (PhACs) in the environment and their possible impacts, such as toxic and health effects as well as the generation of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARG). Hence, various efforts have been initiated to better unders...

The presence of pharmaceutically active compounds (PhACs) in water bodies has been considered an issue of global concern due to their high consumption and release into the environment, especially under pandemic conditions such as current COVID-19 situations. Additionally, the appearance of antibiotic-resistant bacteria (ARBs) and antibiotic resista...

There has been an increasing rate in the release of pharmaceutically active compounds (PhACs) used to cure humans and animals into water bodies, causing various environmental and health issues. Among several methods developed for the removal of these compounds, adsorption has received particular attention due to its efficiency, cost-effectiveness,...

Extraction of the energy from chemical compounds present in the content of the wastewaters has been considered an interesting idea to address issues such as the scarcity of clean water resources and the ongoing need for renewable energies. In this regard, microbial fuel cells (MFCs) have been rapidly developed in recent years to generate electrical...

Pharmaceutically active compounds (PhACs) have been increasingly used to cure health issues in humans and animals. This has led to the release of large amounts of these compounds, creating environmental and health concerns. To control their concentrations in the environment, there have been efforts among the scientific community to develop analytic...

The release and presence of pharmaceutically active compounds (PhACs) in water bodies has created concerns in terms of ecological and health considerations. Hence, various biological and physico/chemical treatment methods have been developed to address these pollutants. Advanced oxidation processes (AOPs) are based on the generation of reactive spe...

The presence of pharmaceutically active compounds (PhACs) in water bodies has raised serious concerns about the possible environmental and health impacts. On the other hand, conventional wastewater treatment methods such as activated sludge have not been designed for the removal of PhACs, and hence, ongoing discharge of these pollutants into the en...

The incidence of pulmonary arterial hypertension (PAH) has significantly increased in the past few decades and therefore requires immediate attention. The applications of drug-loaded nano-systems have shown considerable improvements in controlling PAH compared to plain drugs. The purpose of this current investigation was to prepare and characterize...

Using pathogen-infected food that can be unhygienic can result in severe diseases and an increase in mortality rate among humans. This may arise as a serious emergency problem if not appropriately restricted at this point of time. Thus, food science researchers are concerned with precaution, prevention, perception, and immunity to pathogenic bacter...

The 2,4-dichlorophenol (2,4-DCP) is an important chemical precursor that can affect human endocrine system and induce pathological symptoms. This research reports the degradation of 2,4-DCP using lab-scale hydrodynamic cavitation (HC) approach, which is considered a green and effective method. To promote the degradation efficiency, the zero-valent...

The consumption of fossil fuel sources and in particular, the emerging lethal issues connected with global warming triggered by consumption of petroleum products have set off dynamic research in finding alternate and eco-friendly energy sources. In this regard, algae are viewed as the most versatile feedstock materials for the development of sustai...

Various catalysts in homogeneous or heterogeneous catalysis deploy unconventional reaction pathways by lowering the activation energy (AE) barrier, controlling the selectivity, and creating environmental impact, thereby bringing about economic viability. Hence, the study of these methodologies is of immense interest. To develop a new chemistry, the...

In recent years, antibiotic drugs have been extensively used owing to increased industrial growth, and this has created issues related to drinking water and a green environment. Different techniques have been used to resolve these issues, among which heterogeneous photocatalysis has been widely explored for the elimination of toxic compounds from w...

The growth of advanced micro-and nanostructures with metal oxides has consistently generated extraordinary interest in energy and environmental applications. Cutting-edge nanostructures exhibit superior reactive sites and surface areas, thus improving the performance in crucial domains. In this study, sharp-edged pencil-type ZnO flowers and BiOI fl...

The mother earth is a source of natural resources that, in conjunction with anthropogenic activities, generates a wide spectrum of different biowastes. These biomaterials can be used as low-cost raw feedstock to produce bioenergy, value-added products, and other commodities. However, the improper management and disposal of these biowastes can gener...

The present study examines food-waste (FW) and agriculture compost media (ACM) as cultivation media for D. armatus in conjunction with the bold basal medium (BBM). The microalgae cultivated in different dilutions of organic (FW or ACM) and inorganic (BBM) offered promising results at 3:1 (organic, FW or ACM: inorganic, BBM) dilution for one month....

The abundance of micro(nano)plastics in natural ecosystems is a crucial global challenge, as these small-sized plastic particles originate from land-based and marine-based activities and are widely present in marine, freshwater, and terrestrial ecosystems. Micro(nano)plastics can significantly be reduced through various methods, such as biological,...

Petroleum industries are large water consumers and generate a lot of wastewater at various stages of industrial operations. Wastewater from the petroleum industries contain recalcitrant pollutants such as hydrocarbons that are present in high concentrations, dissolved solids and sulfur compounds that can pose potential environmental threat. Bioelec...

A waste-based circular economy approach is proposed for the phycoremediation of an X-ray developer (XD) solution. The present study emphasizes the utilization of food waste (FW) and agri-compost media (ACM) as growth media for D. armatus for the subsequent bioremediation potential of XD solution-coupled lipid production. A 3:1 dilution (FW/ACM: XD....

The most appealing and prominent approach for improving energy storage and conversion performance is the development of heterojunction interfaces with efficient and unique metal oxide nanostructures. Rhombus Co3O4, nanocapsule CuO, and their heterojunction composites were synthesized using a single-step hydrothermal process. The resulting heterojun...

L-Proline (2%)-TiO2/BiOBr (30%) nanocomposite was synthesized to obtain high photocatalytic performance in the visible light region and infrared radiation(IR) for methylene blue (MB) and congo red (CR) removal from the contaminated wastewater. L-Proline (2%)-TiO2/BiOBr (30%) photocatalyst with strong absorption near IR wavelength and high charge se...

In the modern world, miniaturization of electronic devices for various applications is becoming more common. In particular, the development of flexible energy storage devices have received much attention since they have a superior role in the development of newer technologies such as in public wearables, portable electronic devices, and electronic...

The biomass waste from pomegranate husk (PH) was utilized to develop carbon sheet electrode via the chemical and thermal activation approach and the material was used to remove 4-chlorophenol (4CP) from the aqueous solution. The effect of solution pH, ionic strength, applied voltage, contact time, and 4CP concentration were investigated to observe...

Beta-amyloid (Aβ) peptide is one of the main characteristic biomarkers of Alzheimer's disease (AD). Previous clinical investigations have proposed that unusual concentrations of this biomarker in cerebrospinal fluid, blood, and brain tissue are closely associated with the AD progression. Therefore, the critical point of early diagnosis, prevention,...

Bisphenol A(BPA) is a common industrial chemical with significant adverse impacts on Environment and human health. The present work evaluates the efficacy of pulsed light (PL) and Fe²⁺ ions in activation of sodium percarbonate (SPC) to produce hydroxyl (OH•) and carbonate (CO3•–) radicals for efficient degradation of BPA. The effects of operational...

Ternary nanohybrids based on mesoporous graphitic carbon nitride (g-C3N4) were synthesized and presented for developing stable and efficient Hydrogen (H2) production system. Based on photocatalytic activity, optimization was performed in three different stages to develop carbon nanotubes (CNTs) and WO3 loaded g-C3N4 (CWG-3). Initially, the effect o...

Photocatalytic dye degradation is a method of environmental degradation that is commonly used to eliminate various pollutants produced by pharmaceutical and textile industries. Herein, pure and chromium (Cr)-doped SnO2 nanoflakes were synthesized using a simple facile hydrothermal method and photocatalytic properties were studied under visible ligh...

Globally, the rapid increase in the human population has given rise to a variety of industries, which have produced a variety of wastes. Due to their detrimental effects on both human and environmental health, pollutants from industry have taken centre stage among the various types of waste produced. The amount of waste produced has therefore incre...

The worldwide energy calamity and ecological disturbances demand materials that can remove harmful contaminants from the polluted water. Recently, semiconductor-based catalytic dye removal has created much consideration due to its high efficacy and eco-friendly contaminated water treatment processes. Vanadium oxide (V2O5) has attracted superior att...

The current study elucidates the fundamentals of technical, financial, and environmental viability of the processes used for sustainable “drop-in” fuel generation. At present, the price of producing “drop-in” fuels is around two times as costly (5–6 USD/gallon) as the cost of fossil fuels (3 USD/gallon), especially when using second-generation feed...

In recent years, there has been immense advancement in the development of nanobiosensors as these are a fundamental need of the hour that act as a potential candidate integrated with point-of-care-testing for several applications, such as healthcare, the environment, energy harvesting, electronics, and the food industry. Nanomaterials have an impor...

Increasing demand of pure and accessible water and improper disposal of waste into the existing water resources are the major challenges for sustainable development. Nanoscale technology is an effective approach that is increasingly being applied to water remediation. Compared to conventional water treatment processes, silver nanotechnology has bee...

Hydrogen is regarded as the cleanest form of fuel produced from different sources including biomass. The conventional hydrogen production methods include thermo-chemical processes, water splitting and biological routes. However, these conventional processes suffer from several drawbacks, including but not limited to low selectivity, thermodynamical...

The development and implementation of advanced oxidation processes (AOP) are intended to assist in the treatment of effluents produced during anthropogenic activities, reducing their potential toxicity to the environment. The present work is intended to assess the chemical and ecotoxicological efficiency of AOP using copper oxide nanoparticles (CuO...

Synthetic or natural substances that are emitted from nonpoint and point sources and end up in aquatic habitats at low concentrations are referred to as emerging micropollutants (EMPs). EMPs have negative consequences on both human health and the aquatic environment since they are not frequently tested and monitored. This comprehensive review cover...

PFAS (per- and polyfluoroalkyl substances) possess hydrophobic and hydrophilic characteristics, recalcitrant nature due to a strong C-F bond, and have the potential to endure adverse environmental situations and greater surface activity. Biosolids are the side-resultant in the sludge treatment process, which are primarily applied as soil conditione...

Photodegradation of organic pollutants using metal oxides has shown extraordinary promise owing to the catalytic efficacy, low cost, less noxiousness, and good chemical constancy. In this research, pure and transition metal ions (Cu)-doped V2O5 nanosheets were synthesized and investigated for their photocatalytic efficiency using methyl blue (MB) a...

Chromium originates from geogenic and extensive anthropogenic activities and significantly impacts natural ecosystems and human health. Various methods have been applied to remove hexavalent chromium (Cr(VI)) from aquatic environmental matrices, including adsorption via different adsorbents, which is considered to be the most common and low-cost ap...

Photodegradation is an eco-friendly degradation process routinely employed for the removal of various pollutants produced by pharmaceutical and textile industries. In this work, g-C3N4 sheets (g-CN) supported with Fe-doped ZrO2 nanoparticles have been prepared via a facile hydrothermal method as photocatalysts for the effective photodegradation of...

Soil contamination by petroleum hydrocarbons (PHCs) causes various acute problems such as crop growth, yield, and grain quality. Many Physico-chemical and biological approaches are employed to remove the PHCs from polluted soil. However, these approaches are too slow and ineffective, and environmentally unfriendly. Indeed, bioelectrochemical system...

Carbon nanofibers (CNFs) display colossal potential in different fields like energy, catalysis, biomedicine, sensing, and environmental science. CNFs have revealed extensive uses in various sensing platforms due to their distinctive structure, properties, function, and accessible surface functionalization capabilities. This review presents insight...

Novel g-C3N4 functionalized yttrium-doped ZrO2 hybrid heterostructured (g-YZr) nanoparticles have been synthesized to investigate photocatalytic Cr(VI) reduction as well as electrochemical energy storage applications. The nanoparticles have been characterized to examine their structural, optical, and photocatalytic properties. XRD confirmed the inc...

This article deals with the adsorption performances of the unmodified nanodiamond (ND) and thermally oxidized nanodiamond (Ox-ND) for the removal of different heavy metal ions such as Fe (III), Cu (II), Cr (VI), and Cd (II) from wastewater. The adsorption capacities of the ions onto adsorbents are higher and follow the order: Ox-ND-3 > Ox-ND-1.5 >...

Novel 54 pyrrolyl acetohydrazide analogues were designed, synthesized and screened for antitubercular activity against InhA. Enoyl-ACP reductase/InhA one of the significant enzymes implicated in type II FAS (fatty acid synthase) biosynthetic pathway of bacterial outer cell membrane, in addition Mycobacterium tuberculosis H37Rv inhibition potency ha...

Pinewood biochar was prepared and modified with KOH and used for the immobilization of CuO for efficient adsorption and degradation of model pharmaceutical compounds including ciprofloxacin and carbamazepine from polluted waters. Techniques used were X-ray diffraction, Scanning electron microscopy, Fourier transmission infrared spectroscopy, Brunau...

The leading cause of gynecological cancer-related morbidity and mortality is ovarian cancer (OC), which is dubbed a silent killer. Currently, OC is a target of intense biomarker research, because it is often not discovered until the disease is advanced. The goal of OC research is to develop effective tests using biomarkers that can detect the disea...

Biochar has recently proven to be effective in various applications including soil amendment for crop production and removal of pollutants from the contaminated water and soil environments. However, major studies on the alterations in bulk density, porosity, water holding capacity, acidity and mineral content of the soils due to the addition of bio...

Butyl levulinate (BL), derived from bio-renewable resources, is a potential blending molecule for diesel fuel. Thus, essential characteristics such as boiling point, melting point, flash point, cetane number, calorific value, kinematic viscosity, density, and surface tension of different biorenewable molecules have been assessed. It is found that t...

The impact of feed spacer design on membrane fouling mechanism in ultrafiltration (UF) process under constant flux mode was systematically investigated. Thecombined intermediate pore blocking and cake filtration model was employed,coupled with experimental crossflow UF experiments of dextran and sodium alginate (SA) in aqueous feed solutions. Filtr...

The field of analytical sciences has witnessed emergent techniques for efficient detection of clinical and industrial food adulterants. In this review, the contributions made by the paper-based devices are highlighted for an efficient and rapid detection of food adulterants and additives, which is the need of the hour and how different categories o...

Artificially simulated photosynthesis has created substantial curiosity as the majority of efforts in this arena have been aimed to upsurge solar fuel efficiencies for commercialization. The layered inorganic 2D nanosheets offer considerably higher tunability of their chemical surface, physicochemical properties and catalytic activity. Despites the...

Anammox has been globally accepted as the most promising sewage treatment process. However, the full-scale application of theanammox process islimited because anammox bacteria are easily susceptible to environmental conditions and deficient in nitrite supply. Presently, nitritation and denitratation are generally considered the two-ideal nitrite-ge...

Many biologically potent molecules have been identified to consist of benzo [b]azoles skeleton that are regarded to be the most important drug targets. Specifically, bis-benzo azoles have been the privileged conjugated structures due to their broad applications in environmental catalysis, and synthesis of various polymers, advanced materials, ligan...

Separation of itaconic acid from aqueous solution has been explored using various carbon-based adsorbents obtained from the pyrolysis and KOH activation of coconut shell biomass. The best preparation conditions to obtain a tailored adsorbent for itaconic acid purification were identified via a Taguchi experimental design, where its adsorption prope...

Sulfate-based advanced oxidation process mediated by zero-valent iron (ZVI) and ultraviolet radiation for the decomposition of sulfite salts resulted in the formation of strong oxidizing species (sulfate and hydroxide radicals) in aqueous solution is reported. Degradation of direct red 89 (DR89) dye via UV/ZVI/sulfite process was systematically inv...

One of the most arduous challenges in tissue engineering is neovascularization, without which there is a lack of nutrients delivered to a target tissue. Angiogenesis should be completed at an optimal density and within an appropriate period of time to prevent cell necrosis. Failure to meet this challenge brings about poor functionality for the tiss...

Butyl butyrate (BB) derived from bio-renewable resources is the most promising jet fuel blend. This review highlights essential properties of jet fuel, including calorific value, kinematic viscosity, freezing point, flash point, auto-ignition temperature, and density to compare with different bio-renewable chemicals, which are compatible to be blen...

Eco-friendly, low-cost, and highly efficient noble metal-free rice husk (RH) biomass-derived biochar (BC) was developed as an efficient cocatalyst to improve the performance of zinc indium sulfide (ZnIn2S4) for the photocatalytic H2 production. The ZnIn2S4 and BC were synthesized using simple hydrothermal and pyrolysis methods, respectively. The Zn...

Highly toxic perfluorooctanoic acid (PFOA) has been extensively used in fabricating household products, which can pose extreme harm to the human health and hygiene, thereby resulting in environmental contamination such as in water and soil. In this research, hafnium-doped tungsten oxide (Hf.WO3) modified carbon paste electrode was developed for the...

A considerable portion of fossil CO2 emissions comes from the energy sector for production of heat and electricity. The industrial sector has the second order in emission in which the main parts are released from energy-intensive industries, namely metallurgy, building materials, chemicals, and manufacturing. The decarbonization of industrial waste...

Graphitized carbon nanofibers (CNFs) are the allotropic forms of carbon that offer exceptional electrical conductivity, high aspect ratio, large surface-to-volume ratio, flexibility, mechanical robustness, and structural stability. These properties render CNFs as useful materials in energy applications, including water electrocatalysis and electroc...

In this research, choline chloride/malonic acid (ChCl-MA) deep eutectic solvent (DES) supported onto silica (SiO2) nanoparticles were incorporated into polyimide (PI) membrane precursor solution to develop novel composite mixed matrix membranes via phase inversion to improve their hydrophilicity, porosity, mean pore size, surface roughness, and wat...

In this study, a microwave-assisted process was developed for the production of 5-hydroxymethylfurfural (HMF), furfural, and hydrochar from bamboo (Phyllostachys nigra “Boryana”) in a biphasic reaction system. The system consisted of an acidified aqueous phase and methyl isobutyl ketone (MIBK) as the organic phase and enabled the instantaneous extr...

Nanovesicles are the nanocolloids composed of an aqueous core with a lipid coating, which are employed for the encapsulation of drugs including food and cosmetics industries. Nanovesicles are the self-assembled nanoscale structures that are naturally formed (e.g., exosomes) and can be artificially manufactured. Nanovesicles have the most dynamic fe...

Biofuel is the presently needed potential energy reservoir as an alternative to wearying fossil fuel-based technology. Second generation lignocellulose is considered to be the most abundant source of renewable feedstock among the biomaterials. Lignocellulose biomass (LCB) is the effective feed stock for bio-based chemicals for carbon neutrality, wh...

The widespread use of methyl parathion (MP) and carbendazim (CBZ) as pesticide molecules for controlling pests and protect crops has added pollution issues; excess usage of these can lead to atmospheric pollution through contaminating water and soil sources. In the present study, detection of these compounds at the trace level was achieved by emplo...

Metals represent a large proportion of industrial effluents, which due to their high hazardous nature and toxicity are responsible to create environmental pollution that can pose significant threat to the global flora and fauna. Strict ecological rules compromise sustainable recovery of metals from industrial effluents by replacing unsustainable an...