Use And Disposal Research Articles

Enzyme induced polymer degradation as a pathway to create microbial habitats for biomanufacturing intensification

Polymer hydrogels are instrumental in cell immobilization for biomanufacturing, yet traditional hydrogel bioreactors often compromise cell viability, function, and mass transfer. This results in uncontrolled microbial proliferation and significant cell leakage, thereby impeding the continuous production of high-value products. To address these challenges, we introduce an innovative liquid microcavity technique employing a blend of Gelatin-methacryloyl (Gel-MA) and Pluronic F127diacrylate (F127-DA) for precision bioprinting, followed by selective enzymatic digestion of gelatin to create microbial habitats. Through tailoring of the hydrogel’s pore structure and integration of diverse networks, our approach facilitates controlled nutrient transfer, efficient waste removal, and stable mechanical support, all while maintaining a leak-free suspension culture of microorganisms. We validated the effectiveness of our method by fabricating yeast-infused Three-dimensional (3D) lattice constructs, successfully achieving continuous fermentation of glucose into ethanol in a flow reactor with minimal efficiency reduction (≥90 % yield) over five cycles. This research not only confronts the spatial limitations inherent in hydrogel-based systems but also demonstrates a foundational potential for revolutionary change in biomanufacturing practices.

Developing a strategic plan for efficient management of industrial waste in the machinery sector at United Tractors Company

United Tractors Company prioritizes sustainable waste management practices. This study investigated their current system, aiming to identify opportunities for improvement in efficiency and environmental impact. The research focused on how effectively United Tractors manages their waste streams, from minimizing generation at the source to responsibly processing and disposing of unavoidable waste. The analysis revealed a successful integrated waste management system at United Tractors, encompassing practices like composting, recycling, and proper treatment of hazardous materials. This approach demonstrates their commitment to minimizing their environmental footprint. The study went beyond current practices, identifying promising advancements in waste processing technologies like gasification and bioethanol production. These techniques offer exciting possibilities for further reducing waste and potentially even generating valuable resources from waste materials. The effectiveness of United Tractors' system can be attributed to their comprehensive approach. The study conducted a detailed waste collection study to understand the composition and volume of waste generated across various departments. This data-driven approach allowed for a thorough cost analysis and an evaluation of the operational efficiency within the waste management system. Importantly, the study highlighted the potential benefits of incorporating advanced waste processing techniques for even greater sustainability in the future. While further feasibility studies are needed before full-scale implementation, these findings pave the way for United Tractors to develop and implement even more sustainable waste management practices in the coming years

Assessment of Waste Management Awareness and Practices among Par-ents: A Sequential Explanatory Study

This study explores parents’ awareness and practices on solid waste management. It shows the significance of solid waste segregation for parental involvement and how it influences parents' attitudes and behaviors in a barangay in Magalang, Pampanga. The parents benefit from this study by learning more about the practices and appropriate segregation within their community. In this study, which involved 100 parents, a mixed-method sequential explanatory technique was employed. The results indicate that parents are not aware of the relevant laws about solid waste management and the sources of information about it. In terms of practices, parents are productive at disposing of, reducing, and recycling solid waste, but they don't reuse and segregate the solid waste that much. Overall, the results highlight how crucial proper waste sorting, awareness-building, community involvement, resourcefulness, and sustainability are to improve waste management. Although there are challenges, such as a lack of awareness and inconsistent efforts, recycling and waste removal are mentioned as sources of satisfaction. Parents also emphasize the need for proper segregation, solid waste management regulations, and providing incentives to promote sustainable behaviors in the barangay.

Evaluation of Myostatin and Some Biochemical Variables in Both Type 2 Diabetic and Diabetic Nephropathy Patients

Background: The kidneys are essential organs that keep blood pH stable and eliminate excess water, salts, and aid in the body's waste removal. Aim of the study: The study aims to investigate the importance of myostatin in the development of diabetic nephropathy patients. In addition, the level of urea, creatinine, sodium, potassium, and phosphorus. Materials and methods: A Case-Control study lasted from- November 2023 to January 2024, at Al-Amal Kidney Dialysis Center and Azadi Teaching Hospital in Kirkuk Governorate. The 135 blood samples, their ages (25-70), were divided into three groups. The first group G1 (n:50) patients with T2DM. The second group G2 (n:55) with diabetic nephropathy. The third group G3 for control. Serum samples were utilized to measure MSTN by ELISA, blood urea, serum creatinine, S.PO4, S. Na+, S. K+, and S. Ca++ by spectrophotometer. Results: Significant variations (P<0.05) in MSTN were seen between study groups (8.43±4.69, 10.99±7.05, 5.63±3.38) ng/ml. Additionally, significant differences exist between (G1 vs G2), (G1 vs G3), and (G2 vs G3) with p-value <0.05 Diabetic nephropathy G2 had the highest mean urea and creatinine levels (136.69±38.21, 5.99±1.87), followed by G1 (34.92±9.06, 0.89±0.26) and control group G3 (31.00±4.72), with significant differences (p ≤ 0.001) among three groups. Additionally, G1 with G2, G2 with G3, and G1 with G3 had significant differences (p-value>0.01). Conclusion: This study found higher myostatin, urea, and creatinine in diabetic nephropathy and diabetic patients. The data also showed hyponatremia, hypocalcemia, hyperkalemia, and hyperphosphatemia in diabetic nephropathy and diabetic patients.

STRATEGI AKSELERASI REFUSED DERRIVED FUEL KABUPATEN CILACAP SEBAGAI PENGGERAK EKONOMI SIRKULAR DI INDONESIA

Waste management is an innovation that needs to be developed. With good management, waste will be transformed into a source of income. Waste management with a technological touch will result in optimal economic improvement. One of the efforts made is the utilization of Refused Derived Fuel (RDF) as an alternative energy source. In this context, waste management becomes very important not only as a technical issue but also as a key to unlocking new potential in a sustainable economy. The research method used in this study is qualitative, with data collection from literature review, field observation, and interviews. SWOT Analysis technique is carried out to formulate optimal strategies. The results of this study indicate that the acceleration of RDF in Cilacap Regency as a driver of the circular economy in Indonesia can be done by implementing the main strategies that have been formulated, namely the development of RDF in Integrated Waste Management Sites (TPST) by optimizing technology and local resources.

Determinants of knowledge, attitude and practices of refuse disposal method among residents of Port Harcourt Metropolis

Determinants of knowledge, attitude and practices of refuse disposal method among residents of Port Harcourt Metropolis

National Solid Waste Policy: An Analysis in the Municipalities that Make Core of Vale do Jaguari – RS

National Solid Waste Policy: An Analysis in the Municipalities that Make Core of Vale do Jaguari – RS

Towards Circular Economy: Integrating Waste Management for Renewable Energy Optimization in Zimbabwe

Many countries across the globe are not yet exploiting the full potential energy that is inherent in waste to solve their energy and waste management crisis. This review critically examines the intersection of waste management and renewable energy optimization within the context of Zimbabwe’s transition towards a circular economy. This review explores the integration of waste management practices into renewable energy initiatives to foster a circular economy in Zimbabwe. Therefore, by assessing the feasibility and benefits of incorporating waste-to-energy technologies, this study elucidates the potential for synergistic resource utilization and environmental sustainability. Through a comprehensive analysis of existing waste management frameworks and renewable energy strategies, this paper highlights opportunities for optimizing energy production while addressing pressing waste management challenges. Ultimately, the findings underscore the importance of adopting a comprehensive approach to renewable energy development that leverages waste as a valuable resource in Zimbabwe’s transition towards a circular economy paradigm.

W8banaki Subsistence Patterns During the 18th and 19th Centuries at the Fort Odanak Site, Québec, Canada

ABSTRACT Built in the early eighteenth century on the banks of the Saint-François River (Québec, QC, Canada), the fortified Jesuit mission of Saint-François-de-Sales was an important W8banaki centre during the colonial period. Between 2010 and 2021, archaeological excavations conducted by the W8banaki Nation led to the discovery of the mission’s remains at the Fort Odanak site (CaFe-7) in the historical centre of the village of Odanak. They revealed numerous pit features (used for food storage or refuse disposal), post moulds and hearths, along with diverse artifact assemblages. The analysis of plant macro-remains found in six pits and two hearths at the site was undertaken to document the evolution of culinary practices at the mission and to reconstruct the local environment and its exploitation by the mission’s inhabitants. Results suggest the persistence of traditional Indigenous subsistence patterns during the eighteenth and nineteenth centuries as well as the integration of European foods into the Abenaki diet via trade and close contact with Canadien (i.e. French Canadian) farmers in the region.

Development of a novel LED-IoT photoreactor for enhanced removal of carbamazepine waste driven by solar energy

This study introduces an innovative LED-IoT photoreactor, representing a significant advancement in response to the demand for sustainable water purification. The integration of LED-IoT installations addresses the challenge of intermittent sunlight availability, employing LEDs with a spectrum mimicking natural sunlight. Passive Infra-Red (PIR) sensors and Internet of things (IoT) technology ensure consistent radiation intensity, with the LED deactivating in ample sunlight and activating in its absence. Utilizing a visible light-absorbing photocatalyst developed through sol-gel synthesis and mild-temperature calcination, this research demonstrates a remarkable carbamazepine removal efficiency exceeding 95% under LED-IoT system illumination, compared to less than 90% efficiency with sunlight alone, within a 6-h exposure period. Moreover, the designed photocatalytic system achieves over 60% mineralization of carbamazepine after 12 h. Notably, the photocatalyst demonstrated excellent stability with no performance loss during five further cycles. Furthermore, integration with renewable energy sources facilitated continuous operation beyond daylight hours, enhancing the system's applicability in real-world water treatment scenarios. A notable application of the LED-IoT system at an operating sewage treatment plant showed nearly 80% efficiency in carbamazepine removal from sewage in the secondary settling tank after 6 h of irradiation, coupled with nearly 40% mineralization efficiency. Additionally, physicochemical analyses such as XPS and STA-FTIR confirm that the carbamazepine photooxidation process does not affect the surface of the photocatalyst, showing no adsorption for degradation products.

Invasive Aquatic Plants as Potential Sustainable Feedstocks for Biochar Production and as an Innovative Approach for Wastewater Treatment

Biochar (BC) is a well-established physical treatment method. The high-cost BC limits their use as adsorbents in wastewater. Thus, deriving BC from cheap and locally available waste materials is needed to develop a feasible waste removal technology. Nowadays, BC technology makes it possible to envision a new strategy to manage invasive plants by converting them into value-added products like BC. Hence, the present study was designed to evaluate the potential utilization of BC as an efficient filter medium made by invasive aquatic plants, Salvinia spp., and Eichhornia spp. A mass of 50 g of prepared activated and nonactivated BC was incorporated in a sand and gravel filter to treat rubber-manufactured wastewater. Wastewater was passed through the filter, and both raw and treated water samples were analyzed for pH, Total Suspended Solids (TSS), Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Total Kjeldahl Nitrogen (TKN), Ammoniacal-Nitrogen (NH3-N), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Total Phosphates (TP), Nitrate (NO3-N), turbidity and heavy metals (Zinc, Chromium). The control filter was developed only with sand and gravel, excluding BC. Fourier Transform-Infrared Spectroscopy (FT-IR) and Scanning electron microscopy (SEM) were used to analyze BC’s chemical and physical characteristics. A brine shrimp lethality assay was carried out for toxicological evaluation. OH stretching (3,550-3,200 cm−1), C=C aromatic stretching (1400-1660 cm−1), and Phenol-O-H bending (1,300-1,400 cm−1) were recorded in all BC samples that involved the adsorption mechanism. Observed images indicated differences in surface morphology of both activated and nonactivated BC were observed under SEM observation. The study concludes that the filter unit incorporated with activated Eichhornia spp. Gave the best treatment efficiency when compared to filter units incorporated with other activated and nonactivated BC. The toxicity assay revealed 100% mortality in the control setup and raw wastewater but only 60–70% in the nonactivated BC integrated filters. Activated BC-incorporated filters showed no mortalities. Hence, the study’s outcomes suggest a green approach using invasive aquatic plants for sustainable wastewater treatment.

Li/La and Cu modified ZnO semiconductor: Highly boosted of dielectric and sunlight-treatment of thiamethoxam and brilliant green contaminants

Solving the global environmental problem which related to the dissolved organic pollutants into water systems is an essential issue for human-health and aquatic life. This study represents the simple synthesis of new Li/La and Cu modified ZnO compositions as active photocatalysts and proper dielectric materials for electrical energy storage devices. The synthesized powders have one phase nature with hexagonal lattice indexed to ZnO structure. The field emission scanning electron microscopy (FESEM) clearly showed that (Li, La) modified ZnO powder consist of a mixture of particles having open hexagonal tube and spherical shapes. The FESEM picture of (Li, Cu, La) modified ZnO powder revealed lumps like cabbage shape mainly composed of pieces like sheets or papers. The purity and elemental composition were also verified by energy dispersive spectroscopy (EDS) analysis. The addition of (Li, La) and (Li, Cu, La) ions to ZnO semiconductor extremely improved the dielectric constant which is a benefit for application in solid state energy storage systems. (Li, Cu, La) modified ZnO sample is a suitable catalyst for removal of organic waste owing to its high response to visible light spectrum with measured band gap energy of 2.76 eV. The synergistic effect of Li+, Cu2+ and La3+ dopants induced high visible light photodegradation activities against thiamethoxam pesticide and brilliant green dye with measured efficiencies of 92 and 96 % after reaction time of 50 min, respectively. The high stability and mineralization properties of (Li, Cu, La) modified ZnO catalyst leads to the conclusion that this composition has a potential use in wastewater treatment.

Aksi Plogging Kesadaran Kebersihan Lingkungan Di Balige Oleh P3mi Jemaat Manna Balige

Plogging is an activity that combines jogging with trash collection. In Balige, this activity was carried out by the Balige Methodist Church Youth Fellowship (P3MI) to increase environmental awareness among youth and the surrounding community. This research aims to evaluate the effectiveness of plogging activities in increasing awareness and maintaining environmental cleanliness. The results show that this activity was successful in collecting around 12 sacks of 50 kg rubbish, increasing participants' awareness about environmental cleanliness, and getting a positive response from the public who saw this action. Recommendations for the sustainability of this activity include regular implementation, involvement of more communities, and educational campaigns about reducing plastic.

Program Mengelola Sampah Terpadu Pada Desa Ciburial Kecamatan Cimenyan Kabupaten Bandung

Waste management in Ciburial Village, Cimenyan District, Bandung Regency still faces various challenges. Waste produced by households is usually processed individually, such as burning or landfilling it with soil. However, this method is still not effective because urban communities have limited space. Other waste management is on a paid basis, where the rubbish will be picked up by the rubbishman at each house and will end up in the final disposal site. The mass use of non-degradable and uncontrolled items, as well as deficiencies in waste processing and management, have negative implications for health and the environment. Efficient and environmentally friendly waste management is an urgent problem, and we are making every effort to bring this problem to light. Efficient and environmentally friendly waste management is an urgent need, and we are making every effort to bring attention to this problem. We want to spread our efforts and bring attention to the need for sustainable waste management by visiting every community in RT 1, RT 2, and RT 3. This qualitative descriptive research aims to detect, characterize, and explain PSAT in Ciburial Village. , Cimenyan District, Bandung Regency. Environmentally conscious volunteers and authorities from the Ciburial Community Group, Cimenyan District, Bandung Regency and other local organizations took part in this research. Apart from living in Ciburial Village, they are also active in the integrated waste management program. The findings from this research highlight the potential of integrated waste management initiatives to educate the general public about the importance of responsible waste disposal. More and more people are realizing that sustainable waste management and sorting waste for reprocessing based on type is very important. Organic waste will later be collected and reprocessed into compost, while dry waste will end up in final disposal sites.

Impacts of a municipal solid waste classification policy on carbon emissions: case study of Beijing, China

National and local governments implement municipal solid waste classification policies to reduce waste disposal and minimize environmental pollution. Beijing started implementing its classification of municipal solid waste policy in May 2020. This study evaluates the impact of Beijing’s household waste classification policy on carbon emissions during collection, transportation, and treatment. The policy’s introduction reduced the number of trash bins, influenced transportation modes, and altered waste treatment emissions. We found a notable reduction in average net carbon emissions post-policy implementation (2403 kg CO2eq per metric ton of waste) compared with pre-policy (3584 kg CO2eq per metric ton of waste). If Beijing reaches its 2025 waste target, these emissions will decrease further to 1760 kg CO2eq per metric ton of waste. Translating these findings into monetary terms confirms this policy’s environmental and economic efficacy.

WASTE RECOVERY IN ALGERIA BETWEEN A ROCK AND A RESCUE

Since the year 2000, Algeria has been committed to improving the quality of the environment and enhancing the quality of life for its citizens. Efforts have been made to achieve efficient, integrated waste management. The fact is that we are facing a major shock, and for some years now, the state has been showing shortcomings in the field, which demonstrates that the resources deployed need to be strengthened and consolidated. To cushion this shock, we need to come to the rescue with solutions and proposals. This work aims to propose efficient solutions that involve users in waste collection and sorting. To achieve this, we first need to understand the behavior of users by measuring the waste generated and collected, because the majority of citizens want to sort waste, but in reality, this is still not respected.

Crepuscular rays - The bright side of complement after tissue injury.

Acute injuries trigger an intense activation of the body's defense mechanisms aiming to limit damage and initiate healing. Among the crucial components of the intravascular immune system, the complement system plays a significant role in traumatic injuries, albeit often negatively. It has been suggested that excessive activation of the complement system, transitioning from a localized and timed response to a systemic one, can lead to a loss of its host-protective characteristics. Complement activation products have been associated with the severity of injuries, which sometimes serve as predictors for the onset of organ dysfunctions. Animal studies utilizing complement-targeting agents have provided the basis for considering complement in the management of traumatic injuries in humans. However, numerous studies suggest that the spatial and temporal aspects of complement inhibition are crucial for its efficacy. Understanding the underlying mechanism of the injury is essential to determine where, when, and whether complement inhibition is warranted. Despite the detrimental effects of uncontrolled complement activation, its regulated activation may contribute to essential aspects of healing, such as waste removal and regeneration. This review focuses on the beneficial roles of complement activation in trauma, which are often overlooked or given less consideration but are of immense importance.

The Ocular Glymphatic System-Current Understanding and Future Perspectives.

The ocular glymphatic system subserves the bidirectional polarized fluid transport in the optic nerve, whereby cerebrospinal fluid from the brain is directed along periarterial spaces towards the eye, and fluid from the retina is directed along perivenous spaces following upon its axonal transport across the glial lamina. Fluid homeostasis and waste removal are vital for retinal function, making the ocular glymphatic fluid pathway a potential route for targeted manipulation to combat blinding ocular diseases such as age-related macular degeneration, diabetic retinopathy, and glaucoma. Several lines of work investigating the bidirectional ocular glymphatic transport with varying methodologies have developed diverging mechanistic models, which has created some confusion about how ocular glymphatic transport should be defined. In this review, we provide a comprehensive summary of the current understanding of the ocular glymphatic system, aiming to address misconceptions and foster a cohesive understanding of the topic.

Approaches to developing a household waste removal system

Approaches to developing a household waste removal system

Real-world waste dispersion modelling for benthic integrated multi-trophic aquaculture.

In real-world situations, marine fish farms accommodate multiple fish species and cohorts within the farm, leading to diverse farm layouts influenced by cage dimensions, configurations, and intricate arrangements. These cage management practices are essential to meet production demands, however, farm-level complexities can impact model predictions of waste deposition and benthic impact near fish cages. This is of particular importance when the cages are used for integrated multi-trophic aquaculture (IMTA) with benthic feeders, where this waste not only affects environmental conditions but also provides a potential food source. The Cage Aquaculture Particulate Output and Transport (CAPOT) model incorporated multiple species, cohorts, and cage arrangements to estimate waste distribution from a commercial fish farm in the Mediterranean between October 2018 and July 2019. This spreadsheet model estimated dispersion for individual fish cages using a grid resolution of 5 m x 5 m. The study categorized discrete production periods for each fish cage every month, aligning with intermittent changes in biomass and food inputs due to different cage management practices throughout production. This approach facilitated the use of detailed input data and enhanced model representativeness by considering variations in cage biomass, food types, settling velocities, and configurations. Model outputs, represented in contour plots, indicated higher deposition directly below fish cages that varied monthly throughout fish production cycles. Deposition footprints reflected changes in cage biomass, food inputs, and farm-level practices reflecting this real-world scenario where aquaculture does not follow a production continuum. Moreover, cohort dynamics and cage movements associated with the cage management practices of the fish farm influenced the quantity and fate of wastes distributed around fish cages, revealing variability in deposition footprints. Clearly, these findings have important implications for the design of benthic IMTA systems, with species such as sea cucumber and polychaetes. Variability in waste deposition creates challenges in identifying where the benthic organisms should be placed to allow optimal uptake of waste to meet their food requirements and increase survivability. Evidently, models have an important role to play and this study emphasizes the need for representative input data to describe actual food inputs, cage biomass changes, and management practices for more representative farm-scale modelling and essentially to improve particulate waste management. To effectively mitigate benthic impacts through IMTA, models must quantify and resolve particulate waste distribution and impact around fish farms to maintain a balanced system with net removal of wastes. Resolving farm-level complexities provides vital information about the variability of food availability and quality for extractive organisms that helps improve recycling of organic wastes in integrated systems, demanding a more representative modelling approach.