Adsorption of Cu(II) ions on activated carbon from morinda citrifolia.

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Journal name: World Journal of Pharmaceutical Research
Original article title: Adsorption of copper (ii) ions from aqueous solution on carbons from morinda citrifolia bark
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Author:

Mary Pamila, P. Subramani, 3M. Jeevith


World Journal of Pharmaceutical Research:

(An ISO 9001:2015 Certified International Journal)

Full text available for: Adsorption of copper (ii) ions from aqueous solution on carbons from morinda citrifolia bark

Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research

Copyright (license): WJPR: All rights reserved


Summary of article contents:

Introduction

The study investigates the use of Morinda Citrifolia bark as a low-cost adsorbent for removing copper (II) ions from aqueous solutions. With industrialization and urbanization leading to increased heavy metal pollution, particularly in developing countries, there is a crucial need for efficient and economically viable methods for wastewater treatment. This research emphasizes the advantages of using agricultural and vegetable materials, like Morinda Citrifolia, in the bio-sorption process to mitigate environmental damage caused by toxic metals, specifically focusing on Cu (II) ions.

Influence of pH on Adsorption Efficiency

One significant factor influencing the adsorption capacity of Morinda Citrifolia bark for copper (II) ions is the pH of the solution. The experiments conducted demonstrated that the optimal pH for adsorption occurred at pH levels 4 and 5, indicating that the chemical interactions between copper ions and the adsorbent are heavily dependent on the acidity of the solution. Adjusting the pH effectively enhances the sorptive interactions, thereby optimizing the removal efficiency of Cu (II) ions.

Impact of Initial Concentration

The study also examined how the initial concentration of copper (II) ions affects their removal efficiency. As the concentration of Cu (II) ions increased from 2 ppm to 10 ppm, the percentage removal unexpectedly decreased. This decline in removal efficiency can be attributed to the saturation of adsorption sites on the Morinda Citrifolia bark when confronted with higher concentrations, which inhibits the diffusion of copper ions to unoccupied sites on the adsorbent. Consequently, the research established that an initial concentration of 2 ppm was most effective for subsequent experiments.

Role of Adsorbent Dose and Equilibration Time

The amount of adsorbent used plays a critical role in determining the efficacy of copper ion removal. Through experimentation, the optimal dose of Morinda Citrifolia bark was established to be 0.5 g/50 ml for acid-treated carbon and 0.7 g/50 ml for base-treated carbon. Beyond this dosage, there was little enhancement in adsorption due to the crowding of particles. Additionally, the research documented that adsorption reached equilibrium within 80 minutes of contact time, beyond which the concentration of copper ions in solution remained relatively stable.

Conclusion

The findings unequivocally indicate that Morinda Citrifolia bark is an efficient and cost-effective adsorbent for the removal of copper (II) ions from contaminated water. The optimal conditions for adsorption were identified as a pH of 4, an initial concentration of 2 ppm, and an adsorbent dose of 0.5-0.7 g/50 ml. The adsorption data conformed well to the Langmuir adsorption isotherm model, suggesting that acid-treated Morinda Citrifolia bark outperforms its base-treated counterpart. This research holds promise for the development of sustainable wastewater treatment solutions utilizing agricultural waste materials.

FAQ section (important questions/answers):

What is the focus of the study on Morinda Citrifolia bark?

The study investigates the adsorption potential of Morinda Citrifolia bark for removing copper (II) ions from aqueous solutions through a batch adsorption method.

How were the carbon adsorbents prepared from Morinda Citrifolia bark?

Carbon was prepared by treating the barks with concentrated sulfuric acid and heating at 500°C. An alternative method involved heating at 300°C followed by treatment with saturated sodium bicarbonate.

What experimental parameters were studied for copper ion removal?

The study examined the effects of pH, initial concentration of copper ions, and adsorbent dosage on the efficiency of copper (II) ion adsorption.

What was the optimum pH for adsorption of Cu (II) ions?

The optimum pH for the adsorption of copper (II) ions was found to be 4 for both types of carbon adsorbents.

Which adsorption model best described the results of the study?

The Langmuir adsorption isotherm model accurately described the equilibrium characteristics of copper (II) ion adsorption onto the prepared carbon adsorbents.

What conclusion was drawn regarding the effectiveness of the adsorbents?

The acid-treated Morinda Citrifolia bark was found to have better adsorption capacity for copper (II) ions compared to base-treated bark, suggesting its potential as a low-cost adsorbent for wastewater treatment.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “Adsorption of Cu(II) ions on activated carbon from morinda citrifolia.”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.

1) Water:
Water is essential for life and acts as a solvent and medium for various biochemical reactions. Its pollution with heavy metals, like Cu (II), adversely affects ecosystems and human health, making it a critical subject of study in environmental science and management, especially considering the ongoing industrialization and urbanization.

2) Study (Studying):
The study focuses on understanding the adsorption properties of materials derived from Morinda citrifolia bark for removing toxic metals from wastewater. Scientific studies like this are vital for developing effective, low-cost solutions for environmental remediation, addressing issues like water pollution and the health impacts of heavy metals.

3) Tamilnadu (Tamil-nadu):
Tamilnadu is a state in India known for its rich biodiversity and numerous agricultural products. The region faces challenges due to industrial waste and heavy metal contamination in water bodies. Research conducted here is significant for local environmental health and the sustainable use of resources, impacting the livelihoods of its residents.

4) India:
India experiences severe water pollution due to industrial discharge and agricultural runoff. Understanding the removal of toxic metals from water in India is essential to promote public health and environmental sustainability. Studies like this one contribute valuable data to improve wastewater management practices in developing nations.

5) Science (Scientific):
Scientific investigations are essential for discovering solutions to environmental issues, such as the presence of heavy metals in aquatic systems. This research exemplifies the application of scientific methods to assess and enhance the efficacy of naturally sourced materials for adsorbing toxic substances from water.

6) Medium:
In the context of adsorption, medium refers to the liquid (usually water) in which toxic metals are dissolved. The quality and properties of the medium significantly influence the effectiveness of adsorbent materials in removing pollutants like Cu (II) ions, crucial for accurate experimental outcomes.

7) Human body:
The human body is susceptible to heavy metal toxicity, leading to various health issues. Understanding how adsorbed metals from contaminated water can enter the human body emphasizes the importance of research on water purification methods, highlighting the need for effective remediation strategies to protect public health.

8) Discussion:
Discussion in scientific literature relates to interpreting the results of experiments and analyzing their implications. It allows researchers to contextualize their findings in broader environmental issues, contributing to the ongoing dialogue about effective methods for mitigating pollution and improving water quality.

9) Developing:
Developing countries often face significant challenges related to water pollution and limited access to effective treatment technologies. Research aimed at finding cost-effective and sustainable solutions for removing heavy metal contaminants is crucial for these nations to improve public health and environmental conditions.

10) Accumulation (Accumulating, Accumulate):
The accumulation of toxic metals in the environment results in severe ecological and health issues. Understanding how contaminants accumulate in ecosystems helps researchers develop strategies to mitigate their impact, especially in water bodies subject to industrial and agricultural pollution.

11) Quality:
Quality refers to the standard of water free from pollutants and harmful substances. Research like this investigates the efficacy of natural adsorbents for improving water quality by removing heavy metals, directly impacting environmental health, safety, and sustainability in affected communities.

12) Species:
Species refers to different forms of life within ecosystems, which can be adversely affected by heavy metal contamination. Understanding the interactions between pollutants and various species is crucial for assessing ecological risks and developing remediation strategies that can restore ecosystem balance.

13) Surface:
The surface of adsorbents is critical in determining their capacity to attract and retain pollutants like Cu (II) ions. This property directly influences the effectiveness of materials in water treatment processes, making surface characteristics a focal point in adsorption studies.

14) Nature:
Nature encompasses the natural environment and its processes, including the interactions between pollutants and ecosystems. Recognizing the role of natural materials in controlling pollution is essential for developing eco-friendly solutions for environmental remediation and fostering sustainability.

15) Delhi:
Delhi is the capital city of India and faces significant challenges related to water pollution due to urbanization and industrial activity. Research conducted in connection with Delhi highlights the importance of developing efficient methods for treating contaminated water sources that can be applied in urban settings.

16) Glass:
In laboratory settings, glass equipment, such as beakers and spectrophotometers, is essential for conducting experiments accurately and safely. The materials' properties, like inertness and transparency, make glass an ideal choice for measuring and analyzing chemical solutions during scientific experimentation.

17) Pose:
The term pose often refers to the significant challenges, risks, or threats presented by contaminants like heavy metals. Understanding the poses that pollutants create for both ecosystems and human health drives research efforts focused on finding effective remediation strategies.

Other Science Concepts:

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Discover the significance of concepts within the article: ‘Adsorption of Cu(II) ions on activated carbon from morinda citrifolia.’. Further sources in the context of Science might help you critically compare this page with similair documents:

Water pollution, Toxic metals, Heavy Metal Pollution, Aqueous solution, Adsorbent dose, World Journal of Pharmaceutical Research, Adsorption capacity, Langmuir model, Batch system, Initial concentration, Optimum pH, Langmuir adsorption isotherm, Equilibrium studies, Equilibration time, Economic treatment, Biological method, Revised Date, Equilibrium time.

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