scispace - formally typeset
Search or ask a question

Can the use of adsorption and advanced oxidation processes for dye removal be scaled up for industrial applications? 


Best insight from top research papers

The combination of adsorption and advanced oxidation processes (AOPs) for dye removal shows promise for industrial applications. AOPs like photocatalysis, ozonation, and Fenton oxidation have emerged as effective methods for treating organic dyes in wastewater, offering a potential alternative to conventional techniques. Additionally, the use of biopolymers and metal oxide nanoparticles in AOPs has been explored to enhance performance and sustainability. Furthermore, studies have demonstrated the efficiency of hydrodynamic cavitation (HC) in treating industrial wastewaters polluted by organic substances, providing a means to degrade dyes for potential industrial use. These findings collectively suggest that the integration of adsorption and AOPs, along with advancements in biopolymer-based technologies and HC processes, can be scaled up for effective dye removal in industrial settings.

Answers from top 5 papers

More filters
Papers (5)Insight
Not addressed in the paper.
Heterogeneous photocatalysis and supercritical water oxidation show promise for scaling up dye removal in industrial applications due to their efficiency in degrading azo dyes in wastewater.
Yes, the combination of advanced oxidative processes (AOP) and adsorption (ADS) showed promise for scaling up dye removal in the sanitizer industry, improving removal efficiency and reducing toxicity.
Biopolymer-based advanced oxidation processes, coupled with adsorption, show promise for scalable industrial dye removal due to their eco-friendly nature and efficient dye degradation mechanisms.
Photoelectrochemical advanced oxidation processes, such as PEC and PEF, offer scalable solutions for azo dye removal in industrial applications, with considerations for reactor design and semiconductor materials.

Related Questions

What are the current advancements in adsorption technologies used for wastewater treatment?4 answersCurrent advancements in adsorption technologies for wastewater treatment include the utilization of super adsorbents like P-GSC and P-PKS, which exhibit ultrahigh adsorption capabilities for efficient treatment of oily wastewater. Adsorption is considered a better alternative due to its simple design, low initial cost, and land requirement, making it widely applied for oily wastewater treatment. Adsorption technology is highlighted as a sustainable, cost-effective, and environmentally friendly technique compared to other traditional methods. Additionally, the use of different materials as adsorbents is noted to have higher efficacy in treating wastewater with minimal production of secondary pollutants, emphasizing the importance of adsorption technology for grey water treatment. These advancements in adsorption technologies signify a promising future for safe and efficient wastewater treatment processes.
What are the different types of advanced oxidation processes (AOP) used for spent wash color removal?5 answersVarious advanced oxidation processes (AOPs) are utilized for spent wash color removal. These include ozone treatment, Fenton oxidation, hydrogen peroxide treatment, and photo-Fenton processes. AOPs are known for their efficiency in generating powerful oxidants like hydroxyl radicals, which effectively degrade pollutants in wastewater. The combination of AOPs with biological methods has shown enhanced color and chemical oxygen demand (COD) removal efficiency, making treatment feasible at larger scales. Additionally, AOPs have been successfully applied to remove color and degrade pollutants from highly polluted distillery spent wash, which contains high levels of COD and nonbiodegradable compounds like melanoidins. These methods are recognized for their simplicity, speed, efficiency, and non-selectivity in treating recalcitrant water with low biodegradability.
What are the challenges and potential solutions in scaling up oxygen reduction electrocatalysis for practical applications?5 answersScaling up oxygen reduction electrocatalysis for practical applications faces several challenges. One challenge is the high cost of platinum (Pt), which is commonly used as a catalyst. Researchers have been exploring Pt-free alternatives, such as Pd-based nanostructured electrocatalysts, which have shown superior oxygen reduction reaction (ORR) activities in alkaline mediums used in anion-exchange membrane fuel cells (AEMFCs). Another challenge is the need for efficient and stable electrocatalysts. Defect-engineered carbon materials, such as defective graphene, have shown promise as electrocatalysts for ORR in metal-air batteries. Additionally, the solvation energy of reaction intermediates adsorbed on electrocatalyst surfaces can significantly affect the thermochemical overpotential. Computational estimates have shown that the inclusion of explicit solvation can reduce the overpotential in B-doped graphene (BG) catalysts. To overcome these challenges, further research is needed to develop cost-effective and efficient electrocatalysts for ORR, as well as to optimize the solvation effects on catalyst surfaces.
What is the capacity of dye adsorption using activated carbon?4 answersActivated carbon has been shown to have varying capacities for dye adsorption. The maximum adsorption capacity of activated carbon was found to be 497 mg/g. Another study reported a maximum adsorption capacity of 294.12 mg/g. Activated carbons prepared from marigold residue exhibited adsorption capacities ranging from 47.62 to 293.75 mg/g. Brewers' spent grains-derived activated carbon had a maximum adsorptive capacity of 768.4 m² g-1. Additionally, commercially available activated carbon demonstrated a high removal capacity for a specific dye, with a maximum adsorption capacity of 10.1 mg/g. Overall, the capacity of dye adsorption using activated carbon can vary depending on the specific carbon source and preparation method.
How surface area increase dye adsorption?4 answersIncreasing the surface area can enhance dye adsorption. The higher surface area of Fe3O4-NanoGraphene Platelets (NGP) composites resulted in an increased adsorption capacity for methylene blue (MB). Similarly, the hydroxylation treatment of titanium dioxide (TiO2) photoelectrode increased the short-circuit current density (Jsc) and conversion efficiency of dye-sensitized solar cells (DSSCs) due to the increased amount of adsorbed dye molecules on the surface. The preparation of halloysite-derived mesoporous silica nanotubes with a substantial specific surface area also improved the adsorption capacity for methylene blue. In the case of activated carbon, increasing the activation degree resulted in a higher porous structure and increased adsorption capacity for methylene blue. Finally, the multivariate UiO-66-type metal-organic frameworks with mixed ligands showed selective adsorption of cationic dyes due to the regulated surface area and charge of the frameworks.
What are the most effective methods for removing dyes from wastewater?5 answersThe most effective methods for removing dyes from wastewater include sorption, oxidation, coagulation, filtration, biodegradation, chlorination, ozonation, chemical precipitation, adsorption, electrochemical processes, membrane approaches, and biological treatment. Adsorption is considered an effective method for eliminating colors from tainted water. Various adsorbents, such as chemical and bio-based adsorbents, have been used for dye removal. Lignin-modulated magnetic negatively charged Fe3O4@lignin/phenolic resins nanospheres have shown high efficiency in adsorbing dyes, with a dye removal ratio of 99.80% for Rhodamine B (RB). Nanofiltration (NF) is also a promising technique for dye removal, offering higher rejection, lower energy consumption, and higher antifouling properties. Modified polymeric NF membranes with specific fillers have been developed to enhance permeate flux, selectivity, and antifouling properties. These methods provide effective solutions for removing dyes from wastewater, addressing the environmental concerns associated with dye pollution.

See what other people are reading

What is the role of Sulfurimonas in coastal ecosystems?
5 answers
Sulfurimonas species play crucial roles in coastal ecosystems by contributing to sulfur and nitrogen cycling. They are adept at sulfur oxidation using various electron acceptors like nitrate and manganese dioxide, showcasing metabolic flexibility for niche adaptation in redoxclines. Some Sulfurimonas strains are prevalent in hydrothermal plumes, utilizing hydrogen as an energy source and displaying unique genomic adaptations for chemolithotrophic metabolism. In mangrove ecosystems, Sulfurimonas species help maintain sulfur homeostasis by oxidizing sulfur compounds, although they may contribute to nitrogen accumulation. Their ability to thrive in diverse conditions, ranging from cold oxygen-saturated hydrothermal plumes to coastal sediments, highlights their ecological significance and versatile metabolic capabilities.
What are the current treatment options for achilles tendon ruptures?
4 answers
Current treatment options for Achilles tendon ruptures include non-operative management, minimally invasive surgery (MIS), open surgical repair, and primary immobilization. Non-operative management is generally recommended, except for Achilles insertional tears and specific patient groups like athletes. MIS has shown to have the lowest risk of complications resulting in surgery compared to other treatments, such as functional rehabilitation, open surgery, and primary immobilization. Surgical options for chronic Achilles tendon injuries include direct repair, reconstruction with local tissue, allograft or autograft, and tendon transfer. The development of alternative surgical techniques, like limited incision procedures using devices such as the Achillon and PARS, aims to reduce complications associated with standard open surgery.
What did johansson said about ways to measure students' resilience?
5 answers
Johansson emphasized the importance of reliable and valid measures to assess students' resilience. Various tools have been developed for this purpose, such as the Inventory of College Students' Resilience (ICSR), the Student Resilience Survey (SRS), and the Adolescent Resilience Questionnaire (ARQ). These instruments cover a wide range of factors including internal characteristics, external supports, and different domains of resilience. The studies conducted on these tools demonstrated good psychometric properties, construct validity, and reliability, making them valuable resources for evaluating and understanding students' resilience levels. By utilizing these tools, researchers and educators can gain insights into students' strengths, weaknesses, and responses to stress, ultimately aiding in the development of effective intervention and prevention strategies to enhance student resilience.
What is(are) the mechanism(s) for water impacting adhesive bond strength?
5 answers
Water impacts adhesive bond strength through various mechanisms. One significant mechanism is the hydrolysis of the adhesive due to water absorption, leading to a decrease in bonding strength over time. Additionally, the diffusion of water into the adhesive layer and subsequent attack on the interface contribute to weakening the bond. Critical to this process is the build-up of local water concentration near the interface, causing interfacial swelling stresses and weakening of interfacial bonds, ultimately leading to a loss of adhesion. Furthermore, the presence of water content in adhesives affects their physicochemical properties, such as degree of conversion, flexural strength, modulus of elasticity, and compressive strength, influencing the overall bond strength.
How Green Finance Impacts the Low Carbon Transition?
5 answers
Green finance plays a crucial role in driving low-carbon economic development by stimulating environmentally responsible investments and supporting the transition to a low-carbon energy system. Studies show that green finance significantly promotes low-carbon economic development by reducing carbon emissions and intensity, especially in less economically developed regions. The implementation of green finance policies, such as green bonds, has been found to contribute significantly to environmental investment and aid in achieving low-carbon energy transitions in emerging Asian economies. Furthermore, the green finance pilot policy has been effective in decreasing industrial carbon intensity and promoting energy transition in China, showcasing its impact on industrial low-carbon transition. Overall, green finance serves as a vital instrument in facilitating the low-carbon transition by encouraging sustainable financial practices and investments in eco-friendly initiatives.
How incorporating phosphorous in molecule results in a flame retardant? Particularly using cardanol as starting material?
5 answers
Incorporating phosphorus into a molecule, particularly using cardanol as a starting material, results in a flame retardant by enhancing flame retardancy and promoting the formation of char residue. The addition of phosphorus-based compounds, such as cardanyl diphenylphosphate (CDPP), phosphorus-containing polyol (P-polyol), and a phosphorous-based bi-functional compound HPDAl, improves the flame retardant efficiency of materials like epoxy resin and polyurethane foam. These compounds increase the limiting oxygen index (LOI), reduce heat release rates, and enhance mechanical properties by forming compact and insulating char layers during combustion. The phosphorus components in these compounds contribute to flame inhibition in the gas phase and charring effects in the condensed phase, ultimately improving the overall flame retardant properties of the materials.
What are the impacts of AI in grade 10 students?
5 answers
The impacts of AI on Grade 10 students are multifaceted. AI applications like the Smart Teacher platform and LearningML enhance teaching and learning functions by providing self-learning opportunities, real-time feedback, and personalized recommendations. Additionally, AI-based systems like AI-PANS aim to improve students' performance by generating tailored question papers, adjusting difficulty levels based on performance, and offering curated solutions to enhance problem-solving skills. However, it is crucial to consider potential negative impacts, as research suggests that AI in education can negatively affect social adaptability in adolescents, particularly through family support. Overall, integrating AI in education can revolutionize learning experiences, making them more effective, personalized, and inclusive, while also necessitating a careful evaluation of its broader implications on students' social and emotional well-being.
Is Gustilo-Anderson classification a risk factor of infection after open fracture?
5 answers
The Gustilo-Anderson classification (GAC) for open fractures may not directly correlate with infection risk. Studies have shown that initial misclassification of type III fractures as type II fractures, based on GAC, did not increase the risk of surgical site infections (SSI). Additionally, the GAC changing from the initial to definitive grading in about 12% of cases did not significantly impact the risk of SSI. These findings suggest that while the GAC is crucial for guiding initial antibiotic choices and management strategies, it may not be a direct risk factor for infection development post open fractures. Other factors like fracture characteristics, wound size, and contamination levels may play a more significant role in determining infection risks.
How are plastic incorporated in to the food chain of marine organasm?
5 answers
Plastics, particularly microplastics (MPs) and nano plastics (NPs), infiltrate marine food chains through various routes. These plastics, originating from unmanaged disposal and breakdown of larger plastic waste, are ubiquitous in the marine environment. Marine organisms mistake plastics for food or consume prey containing microplastics, leading to toxic effects at cellular and biochemical levels. The ingestion, inhalation, entanglement, and trophic transfer of microplastics are the main routes through which they enter marine food webs, impacting marine biota and ecosystems. The presence of microplastics in marine organisms like fish, mollusks, and birds highlights the need for policies to reduce plastic production and consumption to safeguard marine biodiversity and human health.
How can artificial intelligence be used to accurately model and reconstruct plant metabolic pathways?
5 answers
Artificial intelligence (AI) plays a crucial role in accurately modeling and reconstructing plant metabolic pathways. For instance, the CLOSEgaps algorithm, based on machine learning and hypergraph topology, predicts missing reactions in metabolic networks, enhancing predictability in wild-type GEMs. Additionally, BioNavi-NP utilizes AI to predict biosynthetic pathways for natural products, achieving high accuracy in identifying pathways for complex compounds. Furthermore, automated workflows like the one developed for Arabidopsis thaliana refine atom mappings for large-scale metabolic models, aiding in flux estimation and structural analyses. Moreover, AI-driven pipelines automate the reconstruction of biosynthetic gene cluster (BGC) associated metabolic pathways, facilitating the heterologous expression of bioactive compounds in optimized host strains. These AI-driven tools not only enhance our understanding of plant metabolism but also streamline biotechnological applications.
What is starch-fatty acid complex?
5 answers
A starch-fatty acid complex, specifically a resistant starch type 5 (RS5), is a novel form of starch that exhibits slow digestion and enzymatic resistance properties, offering potential health benefits. These complexes are formed by combining starches with various fatty acids, resulting in structures with different crystalline arrangements and digestibility rates based on the chain length and degree of unsaturation of the fatty acids. The complexes, such as those formed with 12-carbon fatty acids, show higher complexing indices, increased resistant starch content, and improved fermentation abilities, leading to the production of short-chain fatty acids and a favorable environment for beneficial gut bacteria. Overall, starch-fatty acid complexes have the potential to be utilized as functional food ingredients due to their slow digestion properties and physiological benefits.