Content Number: 01
Author Name: Sana Noor
Author I’d: SBPWNC – A01
Educational Institution: Abdul Wali Khan University, Mardan, Pakistan
Content Title: Geopolymeric membrane and its application in wastewater treatment

An overview on Geopolymeric membrane in waste water treatment

This content address introduction of geopolymer, geopolymeric membrane, synthesis and its application. One of the most significant environmental issues of the twenty-first century is a lack of drinking water, which has been driven by global climate change and population expansion. As a result, wetlands that are naturally occurring are disappearing, billions of people continue to live in nations facing water emergencies, and they lack access to clean water, sanitation, and hygiene. However, it is believed that between 50 and 80 percent of effluent is released untreated. Wastewater is viewed as a dependable alternative water supply and a way to address the water issue in the face of rising demand. Sixty percent of the 2030 Sustainable Development Goals depend on effective water management and wastewater treatment. There are mainly three stages

Separation, biological treatment, and purification of wastewater treatment that can be used constantly. Membrane technology is only the one that can be used as a solution in all three stages. The first stage involves the separation of bacteria, oil, fat, and suspended solids, followed by the purification process using micro membranes and the final stage using ultrafiltration or reverse osmosis membranes.

Membranes can be categorized as either organic or inorganic depending on the materials employed in their production. Each and every membrane has some advantages and disadvantages in terms of performance, stability, and synthesis methods. Geopolymers are inorganic substances that are beginning to be considered as potential inorganic membrane building materials.

Introduction to geopolymer

Geopolymer is an alternate form of the traditional Portland cement, which is more ecofriendly to the environment. It is an inorganic synthetic polymers forming a long network of SiO₄ and AlO₄.  It is estimated that its emit 0.1 to 0.5 billion tons of CO₂ per year to the environment.  

Formation

The process through which geopolymer is formed is known as Geopolymerization, in which alumino- silicate materials are dissolved in an alkali activator solution at room temperature they form a three dimensional network of silico-aluminate.

Role of alkali activator

In geopolymerization alkali activator play an important role. Highest dissolution rate of Si⁺⁴ and Al⁺³ is reported as 10 M NaOH.

 (a) Geopolymer precursor. (b) Geopolymer backbone.

Geopolymer membrane

Geopolymer membrane play significant role in the effectiveness and sustainability of wastewater treatment.

Improved performance Characteristics

Sustainability to the environment

As compared to conventional material, manufacturing of Geopolymer membrane are usually uses low energy and produces fewer carbon emissions. This is consistent with the circular economy’s tenets, which call for recycling waste materials into useful goods.

Porosity and filtration efficiency

Heavy metals and organic pollutants may be effectively filtered out thanks to the porous nature of Geopolymers. Their filtering capacities can be further enhanced by making changes to increase porosity.

Mechanical and chemical stability

The exceptional mechanical strength and chemical resistance of geopolymer membranes are essential for withstanding the severe conditions frequently present in wastewater treatment settings.

Role of GPM in wastewater treatment

Heavy metal removal

Heavy metals from wastewater may be effectively adsorbed by geopolymer membranes, resolving serious environmental issues associated with industrial contamination. They can be used to cleanse polluted water sources because of their capacity to bind metal ions selectively.

Membrane bioreactors

Advanced membrane-based bioreactors are the result of innovations like adding photocatalysts to geopolymer membranes. These systems improve overall treatment efficacy by filtering and degrading contaminants.

Filtration technologies

Numerous filtration technologies, such as microfiltration and ultrafiltration systems, can used geopolymer. Because of their versatility, wastewater treatment technologies can be connected with existing infrastructure, increasing their versatility.

Impact of Pore size of GPM

The effectiveness of geopolymer membranes to filter out impurities is directly impacted by their porosity. Greater permeability, made possible by higher porosity, permits water to flow through while holding onto larger contaminants and suspended particulates. This feature improves the membrane’s ability to remove impurities from water, which is crucial for efficient wastewater treatment.

Adsorption capacity

If membrane is porous it will provide more surface area for absorbing heavy metals and pollutants from wastewater. Researchers reported that porous GPM can meaningfully improve adsorption of different ions like ammonium ion, copper, nickel cadmium etc. due of this characteristic, geopolymer membranes work especially well in applications where harmful complexes need to be removed.

Anti-fouling properties

Geopolymer membrane design and modification may be helpful in reducing fouling, a common issue in membrane technology that eventually results in decreased performance. Researchers can develop membranes that prevent contaminants from building up on their surfaces and maintain greater operational efficiency by maximizing pore size and distribution.

Manufacturing techniques

Gel-casting technique

This technique combines surfactants with a foaming ingredient, like hydrogen peroxide. By maximizing the slurry conditions, the gelcasting technique enables the controlled creation of high-porosity geopolymer foams with pore size ranging from 67% to 86%. In addition to increasing porosity, this method customizes the membranes’ mechanical characteristics, which qualifies them for use in wastewater treatment applications.

Pore-forming technique

This method involves adding chemical foaming agents immediately to the geopolymer mixture. During the curing process, the foaming agents produce gas, which causes pores in the geopolymer matrix. This process has the benefit of creating ultra-macroporous structures, which can greatly enhance wastewater pollutants’ filtration and adsorption capabilities.

Composite forming method

The mechanical strength and porosity of geopolymer membranes can be improved by adding composite materials and pore-forming agents. Producers can attain desired properties suited for particular wastewater treatment requirements by mixing geopolymer matrices with different additives. This entails strengthening adsorption capabilities for heavy metals and organic contaminants as well as resistance to fouling.

Hydrothermal synthesis

This method creates geopolymer materials with increased porosity and surface area by applying high pressure and high temperature. Hydrothermal techniques are useful for adsorption procedures in wastewater treatment because they can create intricate three-dimensional pore networks that enhance mass transfer characteristics.

From Above discussion it is clear that fundamental factor in GPM manufacturing is to maintain the porosity. Porosity enhance efficiency of filtration, adsorption, mechanical stability etc. Researchers are enhancing further these techniques to treat contaminated water sources.

Schematic diagram of geopolymer preparation

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The post Geopolymeric Membrane and its Application in Wastewater Treatment appeared first on IM Group Of Researchers - An International Research Organization.

Research Based Career. If you enjoy putting theories to the test, examining facts, and coming to conclusions, a career in research might be of interest to you. Researchers can find employment in a variety of industries, including business, technology, and medicine. You may decide if this is the perfect career route for you by learning about the different types of research occupations, what they entail, and how much money they make. To assist you locate a position that aligns with your professional objectives, we will discuss what researcher professions are, how to seek researcher careers, and which researcher opportunities are available.

Author

Dr. Sadia Bano

Here are some research-related occupations to think into. These jobs have very good earnings depending on the company and the expertise of the worker.

Research Assistant

A research assistant is a specialist who assists research projects by managing data, doing literature searches, and keeping project researchers’ papers organized.

Research Technician

A research technician is much similar to a research assistant job. He assembles, deciphers, describes, and records data from complicated analytical and evaluative studies. carries out laboratory analytical techniques and procedures that call for in-depth analysis to determine findings. Autonomously sets up and conducts research methods and experiments according to a set protocol.

Forensic Scientist Job

In-depth scientific studies are produced for court procedures by forensic scientists after they investigate evidence from crime scenes. They spend a lot of time in labs analysing traces of evidence, and their findings can be used to connect or disconnect suspects with crime scenes or victims.

Marker Researcher

To determine the likelihood that a good or service will be purchased, market research experts examine consumer preferences, economic conditions, and other variables. They assist businesses in determining what goods consumers want, who will purchase them, and how much they will cost. They might also cooperate with decision-makers to establish key performance indicators, convey their findings to pertinent stakeholders, and aid marketing and product development teams in honing their operations.

Clinical Research Coordinator

A clinical research coordinator is a medical research expert who manages every stage of medical research for clinical trials of medicines or devices. They obtain funds, distribute resources, select and oversee participants, maintain all paperwork, develop a budget, and conduct cost analyses. Clinical research coordinators also work with research teams to make sure the trial follows safety and ethical guidelines and stays on schedule and under budget.

Research Analyst

A research analyst is a specialist who creates in-depth analyses of securities or other assets for use internally or by clients. Other titles for this position are securities analyst, investment analyst, equities analyst, rating analyst, or just “analyst.”

A research analyst gathers information about client demographics, operations, accounting and finance, economics, market trends, and other aspects of the sector they operate in.

While looking for any position, make a solid CV and cover letter and deeply investigate the requirement of job, and make yourself prepared for future.

Also Read: An Introduction to Iron Oxide Nanoparticles, Their Synthesis and Application

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Starting as a researcher can be an exciting and rewarding journey. Whether you’re interested in scientific research, social research, market research, or any other field of inquiry, here are some steps to help you get started. So, here is How to Get Started as a Researcher: 13 Steps and Strategies for Success.

Authors:

1- Izaz Ul Islam

LinkedIn: Click here to see Izaz’s profile

1. Define Your Research Interests:

• Identify the area or subject you are passionate about and want to explore through research.

• Consider your academic background, personal interests, and career goals when choosing your research focus.

2. Set Clear Goals and Objectives:

• Define what you want to achieve through your research. What are your specific research questions or hypotheses?

• Establish the scope and boundaries of your research project.

3. Literature Review:

• Conduct a thorough literature review to understand the existing research in your chosen field.

• Identify gaps in the current knowledge and areas where your research can make a meaningful contribution.

4. Choose Your Research Methodology:

• Determine the research methods and techniques you will use (e.g., surveys, experiments, interviews, data analysis).

• Consider the feasibility and practicality of your chosen methods within your resources and timeframe.

5. Design Your Research:

• Create a research plan or proposal outlining your research design, methods, and timeline.

• Obtain any necessary approvals or permissions, especially for human subjects research.

6. Gather Data:

• Collect data according to your research design.

• Ensure data accuracy and consistency, and keep detailed records.

7. Analyze Data:

• Analyze your data using appropriate statistical or analytical techniques.

• Interpret the results and draw conclusions based on your findings.

8. Communicate Your Research:

• Write a research paper or report summarizing your findings, following the conventions of your field.

• Consider presenting your research at conferences and submitting it for publication in academic journals.

9. Seek Guidance and Mentorship:

• Connect with experienced researchers or mentors who can provide guidance and support.

• Collaborate with colleagues or professors who share your research interests.

10. Stay Informed:

• Keep up with the latest developments in your field through academic journals, conferences, and networking.

• Continuously refine your research skills and stay open to new ideas.

11. Secure Funding:

• Explore funding opportunities from research grants, scholarships, or institutions to support your research endeavors.

12. Maintain Ethical Standards:

• Adhere to ethical guidelines and principles in your research, especially when working with human subjects or sensitive data.

13. Adapt and Learn:

• Be prepared to adapt your research approach as you encounter challenges or unexpected findings.

• Embrace a growth mindset and be open to learning from both successes and failures.

Remember that research is an iterative process, and it may take time to build your expertise and make significant contributions to your field. Stay persistent, be patient, and don’t hesitate to seek help or collaborate with others when needed.

Also read: How To access high quality research articles

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The post How to Get Started as a Researcher: 13 Steps and Strategies for Success appeared first on IM Group Of Researchers - An International Research Organization.