In the present study, the biosorption behavior of rice straws biochar beads was investigated for strontium removal from wastewater bodies. Strontium occurs naturally at the average amount of 0.04% and is considered the 15th most abundant element of earth’s crust. It is recognized as one of the environmentally hazardous constituents and acts as a major pollutant in nuclear water discharges. It is widely used in electronics, pharmaceutical, pyrotechnics, and metallurgical industries that release strontium-rich watewater. Therefore, it is vital to remove it from the wastewater bodies. The biosorption process was carried out by using beads of rice straws biochar used as biosorbent.
Table of Contents
Chapter no 1: INTRODUCTION
Heavy metals pollution in water sources:
Strontium:
Occurrence:
Importance of Strontium:
Conventional methods for heavy metals removal:
Biosorption:
Chapter no 2: REVIEW OF LITERATURE
Heavy metals sources:
Definition of Biosorption
Biosorbents
Significance of biosorbents for wastewater treatment
Strontium recovery by using different biosorbents
Chapter no 3: MATERIAL AND METHOD
Methodology:
Preparation of stock solution
Collection of Biosorbent
F Preparation of Rice straws biochar
Preparation of alginate beads
Biosorption experiment
Preparation of indicator
EDTA solution for titration
Determination of metal concentration by titrimetric method
Optimization of biosorption parameters
Fourier Transform Infrared Spectrometer (FTIR)
SEM Analysis
Chapter no. 4: RESULTS AND DISCUSSION
Effect of contact time
Effect of dosage of RSBC
Effect of Temperature
Effect of initial concentration
Effect of agitation
Chapter no. 5: SUMMARY
Research Objectives and Focus Themes
This thesis investigates the potential of rice straw biochar beads as an eco-friendly and cost-effective biosorbent for the removal of strontium from industrial wastewater. The research aims to optimize various physical and chemical parameters, such as pH, contact time, temperature, and biosorbent dosage, to achieve maximum strontium recovery and to characterize the biosorption behavior using analytical techniques.
- Application of rice straw-derived biochar for strontium removal.
- Optimization of physicochemical parameters including pH, temperature, and agitation.
- Evaluation of biosorption capacity through quantitative and qualitative titration analysis.
- Characterization of biosorption mechanisms using FTIR and SEM analysis.
Extract from the Book
Effect of dosage of RSBC
For testing the sorption behavior of rice straws beads towards metal ions, the experiment was performed by using different amount of the rice straws beads such as 1g, 3g, 6g and 9g. When other factors were kept constant ( 2 h of contact time, 35°C temperature, 10 g/L of the initial metal concentration at 120 rpm and pH value of about 7.0). The amount of rice straws beads was changed while keeping the solution volume constant.
According to results, biosorption proficiency increases by rising the dosage of beads of rice straws bio-char from 1g to 3 g and maximum efficiency was observed at 67% by using 3g of rice straws bio-char beads. After that more increase in biomass dosage leads to the decrease in the capability of bisorption as 44% for 6 g and 26% for 9 g of the biomass dosage as represented by the Fig 4.4.
Summary of Chapters
Chapter no 1: INTRODUCTION: This chapter provides an overview of water pollution caused by heavy metals, specifically focusing on the environmental and health hazards posed by strontium contamination.
Chapter no 2: REVIEW OF LITERATURE: This section summarizes existing scientific research on various biosorbents, biosorption mechanisms, and previous studies regarding the removal of strontium using different organic materials.
Chapter no 3: MATERIAL AND METHOD: This chapter outlines the experimental procedures, including the preparation of rice straw biochar, synthesis of alginate beads, and the analytical techniques used to evaluate biosorption performance.
Chapter no. 4: RESULTS AND DISCUSSION: This chapter presents the experimental findings regarding the effects of various parameters like contact time, dosage, temperature, pH, and agitation on the efficiency of strontium removal.
Chapter no. 5: SUMMARY: This chapter provides a concise conclusion of the research, highlighting the effectiveness of rice straw biochar in strontium removal and the optimized conditions for the process.
Keywords
Biosorption, Strontium, Rice Straw, Biochar, Wastewater, Heavy Metals, Alginate Beads, Titration, FTIR, SEM, Optimization, Adsorption Capacity, Industrial Effluents, Environmental Remediation, Strontium Ions
Frequently Asked Questions
What is the primary objective of this research?
The main goal is to develop an efficient, low-cost method for removing toxic strontium ions from industrial wastewater using sustainable materials like rice straw biochar.
What are the central themes discussed in this work?
The work covers heavy metal pollution, the chemical properties of strontium, the principles of biosorption, and the experimental application of bio-based materials for waste treatment.
Which materials were used as biosorbents in this study?
The study specifically utilizes rice straw biochar, which is converted into encapsulated alginate beads to serve as the active sorbent.
What analytical methods are employed to assess the results?
A combination of titrimetric methods is used for quantitative analysis of metal concentration, while FTIR and SEM are used for qualitative characterization of the biosorbent surface.
What is the significance of the optimized parameters provided in this study?
Optimizing factors such as pH, temperature, and contact time is crucial to maximize the sorption capacity and ensure the practical feasibility of the process in industrial settings.
How is the biosorption efficiency determined during the experiments?
Efficiency is determined by measuring the concentration of strontium ions in the filtrate after titration with EDTA, comparing it against initial concentrations.
Why is strontium considered a significant pollutant?
Strontium isotopes are products of nuclear fission and possess carcinogenic properties, posing severe health risks like bone tumors and leukemia if ingested through contaminated water.
What happens to the biosorption capability when the biosorbent dosage is increased beyond the optimum?
Beyond the optimum dosage, the removal efficiency typically decreases due to phenomena such as partial accumulation of the sorbent and decreased effective surface area.
How does pH affect the strontium removal process?
pH alters the surface charges of the biosorbent; low pH results in increased positive charges leading to electrostatic repulsion, whereas neutral pH levels are generally more favorable for strontium binding.
- Arbeit zitieren
- Rabia Saleem (Autor:in), 2019, Biosorption of Strontiom from Watewater Using Rice Straws, München, GRIN Verlag, https://www.grin.com/document/1284513
