Digital Commons Network^™

Chromium Removal From Tannery Wastewater Via A Hydroponic Technique With Vetiver Grass (Vetiveria Zizanioides), Ismot Zereen, Zainul Abedin, Siddikur Rahman, Debasish Pandit

Applied Environmental Research

This research aimed to investigate the effects of hydroponically cultivated vetiver grass (Vetiveria zizanioides) on the treatment of tannery wastewater for chromium (Cr) removal in Bangladesh. The field experiment involved 9 containers, which were separated into 3 groups: tannery wastewater with hydroponically planted vetiver, tannery wastewater without vetiver (control), and a group with vetiver grown in tap water. The tap water group was used solely for plant growth assessment, whereas only the control and hydroponic vetiver groups were evaluated for Cr and water quality parameters. Throughout the 45-day trial period, Cr and other water quality parameters were analyzed …

Enhanced Co2 Capture Performance Using Methyl Diethanolamine-Functionalized Silica Gels: Assessing Co2 Capture Capacity, Petpitcha Boonmatoon, Pacharapol Nokpho, Pornpote Piumsomboon, Benjapon Chalermsinsuwan

Applied Environmental Research

Carbon dioxide (CO2) is a significant greenhouse gas. This causes harm to the environment and to humans. In 2023, atmospheric CO2 levels rose to 420 ppm, marking a new record high. Therefore, technology for capturing CO2 has been developed. At present, a wide variety of technologies have been proposed to capture CO2. Adsorption technology is more affordable and requires less energy for regeneration. There are many potential solid adsorbents for CO2 capture, such as zeolites, alumina, metal‒organic frameworks (MOFs), and mesoporous silicas. Silica materials possess unique properties that make them promising candidates as solid sorbents for CO2 capture. They provide …

Government Support And Local Residents’ Behavior In E-Waste Management: Evidence From Thailand, Peeranart Kiddee, Somsiri Decharat, Suttiporn Bunmak

Applied Environmental Research

Electronic waste (e-waste) management is a critical global pollution concern. This study investigates government support; local residents' perceptions, knowledge, attitudes, and behaviors related to e-waste management; and collaborative governance in southern Thailand. Employing both quantitative and qualitative methods, this research involves expert government officers who are well versed in e-waste management and local residents. The study utilized in-depth interviews, questionnaires, and workshops. The results revealed that the government is responsible for four e-waste management approaches, encompassing various e-waste collection, transportation, and disposal methods. Local residents exhibited low perceptions of e-waste news but possessed substantial knowledge and positive attitudes toward e-waste …

Examining The Variability In Planetary Boundary Layer Height Over Thailand: Correlations With Enso And Aerosol Optical Depth, Sirapong Sooktawee, Khwanruthai Renuhom, Siriwan Kaewket, Aduldech Patpai, Pramet Kaewmesri, Thongchai Kanabkaew, Pichnaree Lalitaporn

Applied Environmental Research

Thailand has been facing air pollution, e.g., PM2.5, and impacts from climate phenomena, e.g., the El Niño‒Southern Oscillation (ENSO). Both air pollution and climate interact with each other. Changes in the planetary boundary layer height (PBLH) can affect PM2.5, represented by the aerosol optical depth (AOD), and are influenced by ENSO related to changes in the PBLH. The relationships among the PBLH, ENSO, and AOD were investigated via an empirical orthogonal function (EOF), which decomposes the spatiotemporal data of the PBLH into spatial patterns and corresponding time series. Correlation analysis was used to determine the relationships between the PBL variability …

Spatial And Temporal Pattern Assessment Of Agricultural Drought Sensitivity And Its Potential Impact On Economic Crops In Nakhon Ratchasima, Thailand, Suwit Ongsomwang, Siripon Kamontum

Applied Environmental Research

Agricultural drought sensitivity (ADS) is highly diverse across regions, primarily due to differences in climate, soil types, and farming practices. Agricultural drought impacts depend on drought intensity, severity, duration and timing relative to crop growth stages. Therefore, spatial and temporal pattern assessments of ADS and its potential impact on economic crops in three scenarios via multicriteria decision-making methods were conducted. As a result, the spatial distributions of the ADS index and its classification at 3 m7, 3 m10 and 6 m10, covering the planting and growing periods, displayed different patterns. The percentages of moderate, high and very high severity levels …

Exploring The Co-Composting Potentials Of Raw Grease Trap And Grease Trap-Derived Soaps: Insights Into Grease Trap Modification, Calcium Supplementation, And Microbial Community Analysis, Pokchat Chutivisut, Panaya Kotchaplai, Bualuang Faiyue, Nattapong Tuntiwiwattanapun

Applied Environmental Research

Managing waste with grease traps poses a challenge because of the potential environmental issues associated with its disposal. In this study, two approaches were investigated to increase the biodegradability of grease trap waste: 1) converting raw grease trap waste into soap and 2) supplementing grease trap soap as inoculum with calcium material. The preparation of grease trap soap was optimized to attain a soap yield of 103% by utilizing a water-to-ethanol ratio of 9:1 at 80 °C for a processing time of 3 hours. A comparison of the composting results revealed higher nitrate yields with increased ratios of grease trap …

Nationwide Household Food Waste Generation Rates In Rural And Urban Settings: Evidence In Thailand, Vilasinee Krutprong, Chanathip Pharino

Applied Environmental Research

To achieve sustainable development goals, addressing food waste requires evidence-based solutions grounded in a nuanced understanding of waste generation rates and the factors influencing them. This study explores the intricate dynamics of food waste generation in Thai households, encompassing both liquid and solid waste streams. Empirical data were collected from 2,700 diverse households across urban and rural areas over a four-week period. The study revealed an average food waste generation rate of 0.332±0.003 kg per capita per day when liquids were included and 0.228± 0.002 kg per capita per day when liquids were excluded. Surprisingly, rural households generated more food …

The Role Of Remittances In Economic Growth And Environmental Sustainability: A Cross-Country Analysis, Bishnu B. Khatri, Omkar Poudel, Pradeep Acharya

Applied Environmental Research

Although remittances significantly influence economic stability, their role in sustainable growth and environmental impact remains uncertain. While these financial inflows enhance household welfare, their effects on gross domestic product (GDP), carbon emissions, and trade openness require further exploration. This study investigates the economic and environmental linkages of remittances in India, Mexico, China, the Philippines, and Pakistan, the top five remittance-receiving countries. Using panel data analysis, this study employs Dumitrescu Hurlin causality tests and dynamic ordinary least squares (DOLS) to assess the long-term and causal relationships between urbanization, trade openness, GDP per capita, carbon emissions, and remittances. Data from the World …

Microplastic Contamination In Commercially Important Bivalves Of Sorsogon Bay, Philippines, Sarina M.B. Arciga, Charmaine A. Malon, Kenneth N. Ballaran

Applied Environmental Research

Sorsogon Bay, a key fishing ground in the Philippines, is known for its commercially important bivalve species: Perna viridis, Atrina pectinata, and Paphia undulata. Despite their ecological and economic value, limited research has been conducted on microplastic contamination in bivalves harvested from this area. This study aimed to assess the abundance and types of microplastics in commercially important bivalves (P. viridis, A. pectinata, and P. undulata) from Sorsogon Bay, Philippines. Commercial bivalve samples were randomly collected, digested with 10% w/v potassium hydroxide (KOH) solution, filtered (8 µm), and examined under a compound microscope. …

Sediment Grain Size Analysis And Characteristics Of Sedimentation Processes In The Bang Berd-Khao Tham Thong Beach, Chumphon Province, Rawadee Meeprasit, Sujaree Bureekul, Suriyan Saramul

Applied Environmental Research

This study investigated the sedimentological characteristics of the Bang Berd-Khao Tham Thong beach system, which is located along the western shore of the central Gulf of Thailand, an area that is minimally disturbed by human activity and is ideal for studying natural coastal processes. Sediment samples were collected from both coastal and marine environments across four sampling periods (July 2022, September 2022, April 2023, and June 2023). The analysis focused on the grain size distribution, sorting, skewness, kurtosis, and sediment composition, revealing a predominance of medium sand in coastal sediments and increased silt and clay contents in marine sediments. The …

Effects Of Herbicides On 2,4-D-Resistant Soil Microorganisms In Maize Cultivation In Lopburi Province, Thailand, Boontarik Chimchart, Jitra Kokaew, Amnat Eamvijarn, Kanokon Bunpha, Sontaya Khamtib, Monchai Manassila, Tawatchai Inboonchuay

Applied Environmental Research

This study aimed to assess the impact of herbicide application on soil micro-organism density and to identify microorganisms resistant to 2,4-D-dimethyl-ammonium (2,4-D) for potential biodegradation. Research was conducted in maize plots in Lopburi Province, where 2,4-D was applied at a rate of 120 g of active ingredient per 160 m2. The soil samples were collected at various intervals: before application; 2 and 4 hours postapplication; and 1, 3, and 7 days after application. The analyses included soil property and microorganism population analyses. The results indicated that 2,4-D applications significantly increased bacteria and fungi in the treated plots compared with those …

Low-Temperature Catalytic Oxidation Of White Spirit Vapor In Air By Binary Oxides Of Feo-Mnox Supported On Oms-2 Material, Ngo Quoc Nguyen, Pham Duy Quang, Nguyen Ha Nhu, Le Thi Van Anh, Nguyen Thi Thuy, Vo Thanh Hang, Le Van Thang, Nguyen Thi Le Lien, Nguyen Trung Thanh, Nguyen Nhat Huy

Applied Environmental Research

In this work, catalysts of iron and manganese oxides supported on OMS-2 were prepared and applied to remove white spirit (WS) in air. Among the fabricated catalysts, the FeO-MnOx/OMS-2 catalyst with a surface Fe+Mn loading of 15% (Fe:Mn = 6:4) exhibited the highest catalytic performance, achieving a high WS removal efficiency of 97.91% at 200 °C. The catalyst retained the cryptomelane-type tunnel structure of OMS-2 and possessed enhanced redox activity due to the synergistic interaction between surface Fe and Mn species. The physico-chemical properties were characterized via BET, EDS, FTIR, XRD, and SEM. The suitable conditions for WS oxidation were …

Investigating Spatial And Temporal Changes In Vegetation Via Remote Sensing Indicators And Revealing Their Trends In The Central Desert Of Iran, Peyman Akbarzadeh, Shima Nikoo, Mehran Akbarzadeh

Applied Environmental Research

Vegetation changes can significantly affect the conditions and productivity of ecosystems. Consequently, studying vegetation dynamics across various temporal and spatial scales has emerged as a critical environmental concern. The aim of this study was to investigate changes in vegetation cover via vegetation indices, including the normalized difference vegetation index (NDVI), ratio vegetation index (RVI), soil adjusted vegetation index (SAVI), and difference vegetation index (DVI), derived from multitemporal Landsat 5, 7, and 8 satellite images processed via the Google Earth Engine. The study area is located in the Damghan arid and desert watershed, which represents the central desert of Iran. Furthermore, …

Halotolerant Biodegradation And Detoxification Of Synthetic Dyes By Marine-Derived Penicillium Oxalicum M6a: Metabolite Profiling And Ecotoxicity Assessment, Ugochukwu Okechukwu Ozojiofor, Mohammed Sani Abdulsalami, Nkechi Eucharia Egbe, Ahmed Ali Haroun, Yakubu Magaji

Applied Environmental Research

The complex aromatic structures of synthetic dyes in contaminated water bodies make them difficult to degrade, posing a serious environmental challenge and representing a significant emerging pollutant that warrants urgent intervention. This study evaluated the biodegradation and detoxification potential of a halotolerant, marine-derived fungal strain, Penicillium oxalicum M6A, isolated from the Nigerian coastline, against Indigo carmine (IC) and Remazol Brilliant Blue R (RBBR). The effects of pH, temperature, salinity, and dye concentration on degradation efficiency, alongside enzymatic activity, were assessed. FTIR and GC‒MS analyses were employed to identify degradation products and predict metabolic pathways, whereas toxicity was evaluated in three …

Kinetics Of Hexavalent Chromium Adsorption And Reduction By Living Cells Of The Marine Bacterium Bacillus Cereus, Jittima Charoenpanich, Wachiraphorn Cherdchoo, Jutamas Pantab, Jariya Supakrit

Applied Environmental Research

This study identified Bacillus cereus, an efficient Cr(VI) bioreducer, isolated from marine sediment in Thailand. Batch experiments verified the complete removal of 25 mg L-1Cr(VI) from synthetic wastewater (pH 7.0) after 6 days at 37 °C, 50 rpm,and a biomass concentration of 25% (v/v) culture inoculum. The Freundlich isotherm model demonstrated the best correlation with the Cr(VI) adsorption equilibrium data in the 25–100 mg L-1concentration range (R2= 0.9831). Kinetic analyses indicated that the removal of Cr(VI) by living B. cereusfollowed a pseudo-second-order adsorption model (R2= 0.9875) and a pseudo-second-order reduction model (R2= 0.9807). The adsorption rate can be accuratelycharacterizedvia the …

Bibliometric And Visualisation Analysis Of Biomass Burning Research In Thailand (1997-2024), Weerachon Sawangproh, Arika Bridhikitti

Applied Environmental Research

Biomass burning is a major driver of air pollution and climate-related impacts in Thailand, but a national-level synthesis of research efforts is lacking. This study conducts a comprehensive bibliometric and qualitative review of 256 peer-reviewed publications from 1997–2024, using Scopus-indexeddata to explore research trends, thematic patterns, and existing gaps. The analysis reveals a strong emphasis on atmospheric chemistry, air quality modeling, and remote sensing, which collectively account for more than 60% of the research landscape.Studies frequently focus on pollutants such as PM2.5,PAHs, carbon monoxide, and heavy metals, with biomass burning identified as a dominant source, especiallyduring the dry season in …

Landslide Susceptibility Mapping Via Dempster-Shafer, Statistical Index, And Certainty Factor Models In Gis And Their Comparison At Pidie Recency In Aceh, Indonesia, Septianto Aldiansyah, Amniar Ati, Fitriyani Saudi

Applied Environmental Research

Landslides are natural disasters that are active if there is an interaction of environmental factors that are considered to control them, especially in mountainous areas. This study developed a landslide susceptibility map in Pidie Regency via the Dempster-Shafer (DS), statistical index (SI), and certainty factor (CF) models. A total of 957 landslide events were mapped, 70% of which were used for modeling, whereas the remaining events were used to validate the model output. Fourteen layers of conditioning factors were used: elevation, slope, aspect, curvature, TWI, SPI, STI, NDVI, rainfall, distance from river, distance from road, distance from fault, LULC, and …

Assessment Of Landslide Susceptibility And Settlement Exposure Via Geospatial Techniques In Bulambuli Distrcit, Eastern Uganda, Andrew Mulabbi, John Calvin Esagu, Gertrude Akello, Remigio Turyahabwe

Applied Environmental Research

Landslide susceptibility is a significant concern in Elgon County, Uganda, particularly during the rainy season. This vulnerability is attributable to several factors, including steep slopes, fertile soils, and dense settlements on volcanic ridges. Landslide susceptibility maps are important in mitigating the risk particularly at the local level. The objectives of this study were 1) to model landslide susceptibility via an interpretable machine-learning model, 2) to identify the most influential factors for landslide susceptibility in the study area, and 3) to assess the exposure of settlements to landslide risk. This study employed the XGBoost model trained on nine conditioning factors via …

Exploration Of Indigeneous Biosurfactant-Producing Bacillus Sp. From Petroleum Hydrocarbon-Contaminated Soil In Indonesia, Rizky Danang Susetyo, Wahyu Wilopo, Suwarno Hadisusanto, Endah Retnaningrum

Applied Environmental Research

Hydrocarbonolastic bacteria are valuable for the remediation of petroleum-polluted environments. The production of biosurfactants by such bacteria significantly enhances hydrocarbon bioavailability and increases remediation efficiency. One genus of hydrocarbonolastic bacteria with the potential to produce biosurfactants is Bacillus, yet strain-level diversity and local adaptations remain underexplored.Tthis study aimed to isolate and characterize hydrocarbonolastic bacteria belonging to the Bacillus genus from soil samples collected at Geopetroleum Teksas Wonocolo, Kedewan District, Bojonegoro Regency, Indonesia, which is a historically underreported hydrocarbon site. Additionally, the capacity of Bacillus to synthesize biosurfactants was examined. Bacillus strains capable of biosur-factant production were identified via a polyphasic …

Nanofiltration-Based Recovery Of Sodium Gluconate From Fermentation Broths Of Oil Palm Solid Residue Hydrolysates, Ayla A. Liswani, Aulya R. Arevin, Naufal Baariq, Ibnu M. Idayatullah, Muhamad Sahlan, Masafumi Yohda, Heri Hermansyah, Apriliana C. Khayrani

Applied Environmental Research

Sodium gluconate (SG), a functional organic salt derived from gluconic acid, is widely utilized in various industrial sectors because of its excellent chelating ability, low toxicity, and biodegradability. SGs can be produced sustainably through the neutralization of gluconic acid, which is obtained from the microbial fermen-tation of lignocellulosic biomass such as oil palm fronds (OPFs) and empty fruit bunches (OPEFBs). To meet commercial demands, SGs must be recovered in concentrated form, and nanofiltration (NF) offers a promising membrane-based approach for this purpose. This study aimed to optimize the SG concentration from the fermentation broths of oil palm residue hydrolysates via …

Community Perception And Attitudes Toward Plastics And Microplastic Pollution: A Case Study In The Red River Delta, Vietnam, Dang Hai Mai

Applied Environmental Research

Plastics and microplastic contamination pose increasing threats to human health, food safety, and environmental sustainability. In Vietnam, rapid urbanization, economic growth, and population expansion have contributed to a surge in plastic waste, intensifying pollution across regions such as the Red River Delta. This study adopts the theory of planned behavior (TPB) to explore community perceptions, attitudes, and behavioral intentions regarding plastic and microplastic pollution. A quantitative research design was employed, with data collected through structured questionnaires administered to 1,305 respondents via a stratified multistage sampling strategy across four provinces in the Red River Delta. Descriptive statistics and multiple linear regression …

When Should Training An Ai Model Prevail Against Copyright Infringement?, Jeffrey Greenbaum

Oklahoma Law Review

No abstract provided.

Exposed! Students’ Personal Reproductive Healthcare Information, Janet Koven Levit

Oklahoma Law Review

No abstract provided.

Electron Energization By Dispersive Alfvén Waves In The Cusp, P. A. Damiano, A. J. Hull, C. C. Chaston, J. Johnson

Faculty Publications

No abstract provided.

Statistical Survey Of Magnetic Flux Integral Quantities In Saturn's Magnetosphere, Xuanye Ma, Simon Wing, P. A. Delamere, J. Johnson, B. Burkholder

Faculty Publications

No abstract provided.

Modularity, Licensing, And The Nrc, Tara Righetti, Madeleine Lewis

Oklahoma Law Review

No abstract provided.

Assessing Gender Differences In The Students’ Academic Performance, Aptitude, Emotional Intelligence And Grit, Farheen Nasir, Athari Almuraikhi, Asma Alkusayer, Fatima Saeed, Abdulmohsen Alkushi, Areej S. Alowfi, Muhammad Alghaihab, Faizan Nasir

Health Professions Education

Purpose: This research aimed to assess gender differences in academic performance, aptitude, emotional intelligence, and grit among the students.

Method: The sample included 302 students (250 females and 52 males) from Saudi health sciences institutes, located in Riyadh, Jeddah and Alahsa. Data collection was done through Google Forms which was based on demographic information, Self-Report Measure of Emotional Intelligence and Grit Scales. Results: Statistical analysis was done through STATA-16 by applying ANOVA. Results indicated a significant gender difference in students’ CGPA, aptitude and emotional intelligence. However, there was an insignificant gender difference in students’ grit scores. Conclusion: The findings show …

Faculty Relationships: A Key Factor In Fostering Students' Sense Of Belonging In A Doctor Of Physical Therapy Program, Gina Gang, Jenni Rae Rubio, Michael Antich, Anayansi Balmaceda, Alexandra Candamil, Lacey Fogata, Corey Salce, Roger Vermont Zelaya, Noha Daher

Health Professions Education

Background: Sense of belonging is critical for student success in higher education. Limited research exists investigating factors perceived by Doctor of Physical Therapy (DPT) students contributing to belonging during on-campus curricula.

Objective: The purpose of this study was to explore belonging among second-year DPT students and identify influencing factors and strategies to enhance on-campus belonging.

Methods: The study used a convergent parallel design, integrating quantitative cross-sectional survey data with qualitative thematic analysis. Second-year DPT students in one residential program completed the University Belonging Questionnaire (UBQ) and answered open-ended questions. The primary outcomes were degree of student belonging, factors influencing belonging, …

Social Network Sites: Use, Perception Of Addiction And Health Risks Among Nursing Students In Meknes Morocco, Rachida Archou, Meriem Ouadrhiri, Rajae Lamsyah, Maryem Rhanoui, Mustapha Boucetta, Mounia Mikram, Kamelia Amazian, Rachid Aalouane

Health Professions Education

Objectif : Le nombre d'utilisateurs des réseaux sociaux est en constante augmentation et les jeunes représentent la catégorie la plus attirée par ces sites. Cependant, une utilisation incontrôlée des réseaux sociaux peut entraîner de graves problèmes de santé physique et psychologique. Par conséquent, cette étude vise à déterminer la dépendance perçue aux réseaux sociaux et son impact sur la santé des étudiants infirmiers marocains.

Méthodes : Il s'agit d'une étude transversale. Les données ont été collectées auprès de 300 étudiants infirmiers marocains à l'aide d'un questionnaire auto-administré et pré-testé. Le questionnaire est divisé en trois sections : a) données démographiques, …

Exploring Approaches To Teaching Communication Practices For Shared Decision-Making In Medical Education: A Scoping Review, Sarah A. E. Aboushawareb, Saki Sultana, Peter Nugus, Tracie Barnett, Amalia M. . Issa, Gillian Bartlett-Esquilant

Health Professions Education

Objective

Health professional education researchers have documented increased training on shared decision-making (SDM) skills in undergraduate as well as continuing professional development (CPD). In this review, we seek to understand the current methods and approaches to teaching SDM for healthcare providers and trainees.

Methods

This scoping review involved the systematic search of 4 databases: MEDLINE, ERIC, PsycINFO, and Scopus for qualitative and quantitative studies literature covering the topic of teaching SDM in medical education.

Results

We identified 20 records that met our search criteria and were included in this study. We found that SDM training provided in medical education included …