Adsorption of Hexavalent Chromium from Wastewater Utilizing Chitosan Based Activated Carbon Prepared from Butea monosperma Bark | Chapter 5 | Science and Technology - Recent Updates and Future Prospects Vol. 1

 

The present study highlights about adsorption of Hexavalent Chromium from Wastewater Utilizing Chitosan Based Activated Carbon Prepared from Butea monosperma Bark. Waste water from many industrial operations contains hexavalent chromium metal ions, which worsen environmental degradation. The literature contains documentation of common physical and chemical treatment methods for getting rid of hexavalent chromium. Not only are these methods costly and energy-intensive, but they also seem to produce a build-up of potentially dangerous byproducts. The current study used chitosan-coated Butea monosperma bark-activated carbon to extract hexavalent chromium from an aqueous solution. The batch experiment was used to investigate the pH effect, time of contact with the adsorbent, adsorbent dose, and the starting concentration of Cr (VI) ions. The pH of the biosorbent was found to be optimum at three for Cr (VI) sorption. The elimination of Cr(VI) from the solution will be accelerated with the rise of contact time.  Up to 94% more Cr (VI) can be extracted for every unit increase in adsorbent dose. As the blood level of Cr (VI) increased, so did the clearance rate. In this study, researchers discovered that a pre-treated biosorbent was an excellent material for eliminating Cr(VI) ions from contaminated water. The final results revealed up to a 73% reduction in percentage elimination of Cr(VI). Adsorbents have confined a wide variety of active sites to saturate at a certain concentration, which justifies this result.

Author(s) Details:

S. S. Hunge,
Chintamani College of Science, Pombhurna District, Gondwana University, Chandrapur-442918, Gadchiroli (MS), India.

Please see the link here: https://stm.bookpi.org/STRUFP-V1/article/view/14327

Evaluation of the Biosorption Capacity of Saccharomyces cerevisiae for Heavy Metals in Milk| Chapter 2 | Emerging Challenges in Agriculture and Food Science Vol. 5

A biotechnological approach for removing heavy metals from the environment involves the use of biosorbents such as bacteria, yeast, and algae. Heavy metal decontamination in food and water can also be accomplished with these microbes. Using Saccharomyces cerevisiae as a model, our study team looked at heavy metal biosorption in milk. Initial heavy metals (Pb, Cd, and Hg) were introduced to milk, and the bioremoval process was tracked for four days. The goal of this study is to see how exposure duration, temperature, S. cerevisiae concentration, and beginning metal concentration affect the bioremoval process of heavy metals (Pb, Cd, and Hg) in milk. S. cerevisiae concentration, beginning metal concentration, and exposure duration were statistically substantially linked with heavy metals removal (p values 0.05) according to the ANOVA analysis. After 4 days with 30108 CFU S. cerevisiae in milk, the maximum biosorption (70%) was found. These findings added to the growing body of data that S. cerevisiae is an effective biosorbent for heavy metal removal from milk, as well as a potentially safe and environmentally friendly tool for ensuring a safe and healthy food supply.

Author(s) Details:

R. Masoud,
Department of Food Science and Technology, Iran National Standards Organization, Tehran, Iran.

F. Mirmohammad-Makki,
Department of Food Science & Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran.

A. Zoghi,
Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Please see the link here: https://stm.bookpi.org/ECAFS-V5/article/view/6977

Valorization of Dairy Sludge in Water Treatment: Assessment of Biosorption of an Industrial Dye (A-BG) | Chapter 06 | Emerging Challenges in Environment and Earth Science Vol. 2

 Today, pollution control is a top priority. Industrial wastewater, particularly that from the textile and paper sectors, can contain a wide range of organic micro contaminants, including dyes. The environment is seriously harmed by the lack of treatment of these fluids. It is preferable to treat this water before it is discharged in order to limit the amount of pollution it contains.

Biosorption can be thought of as a cost-effective and efficient alternative to the numerous existing micropollution remediation technologies.

The effects of initial pH solution, biosorbent dose, biosorbent particle diameter, and initial dye ion concentration on biosorption were investigated. Batch experiments were used to measure these parameters. With increasing dye concentration, equilibrium absorption increased, reaching a maximum sorption capacity of 178.6 mg g-1. The adsorption equilibrium data were analysed using model equations such as Langmuir and Freundlich isotherms, with the first isotherm model providing the best matches to the experimental data. To evaluate the biosorbent, scanning electron microscopy and energy-dispersive X-ray (SEM-EDX), Brunauer–Emett–Teller (BET), Fourier transform infrared analysis (FTIR), and microbiological characterization were used. Kinetic models such as pseudo-second-order and intra particle diffusion were used to characterise the adsorption mechanism.

The proposed study involves assessing the ability of a dairy sludge to fix a textile dye, A-BG (Astrazon brilliant), in an aqueous solution in a batch method.

The use of dairy sludge as an adsorbent for the removal of harmful cationic dyes was studied.

Author(S) Details

Mohamed Sassi
Faculty of Nature and Life Sciences, University of Tiaret, Laboratory of Improvement and Valorization of Local Animal Productions, BP 78 ZAAROURA – 14000 Tiaret, Algeria.

Benaouda Bestani
Laboratoire de Structure, Elaboration et Application des Matériaux Moléculaires, Université de Mostaganem, Mostaganem, Algeria.

Eric Guibal
Ecole des Mines Alès, Engineering Laboratory of the Industrial Environment, 6 Avenue de Clavière, F-30319 Alès CEDEX, France.

Soumaya Sassi
Institute of Biological Sciences, Faculty of Science, University of Malaya (UM), 50603 Kuala Lumpur, Malaysia.

View Book:- https://stm.bookpi.org/ECEES-V2/article/view/5735

Study on Removal of Lead(II) from Aqueous Solutions Using Sida rhombifolia as Biosorbent | Chapter 9 | Current Advances in Chemistry and Biochemistry Vol. 6

 As a biosorbent, the plant Sida rhombifolia has been used to remove lead ions from aqueous solutions. The biosorption capacity tests were performed in an equilibrium batch to investigate the effects of contact time (10-120 min), temperature (30-60°C), initial metal ion concentration (10-90 mg/L), agitation speed (50-250 rpm), biomass dosage (50-500 mg), and retention volume on biosorption capacity (25-150 mL). Biosorption was found to be an endothermic process based on the thermodynamic parameters. and impromptu method The pseudo second-order model accurately represented the kinetic data. According to the isotherm studies, the equilibrium data fits better with the Temkin model. The current study's findings suggest that Sida rhombifolia has the potential to be used in the removal of lead from aqueous solutions.

Author (S) Details

Dr. Avis Tresa Babu
Post Graduate & Research Department of Chemistry, Nirmalagiri College, Kannur-670 701, India.

E. Shiju
Post Graduate & Research Department of Chemistry, Nirmalagiri College, Kannur-670 701, India.

K. E. Rakesh
Post Graduate & Research Department of Chemistry, Nirmalagiri College, Kannur-670 701, India

E. Sreejina
Post Graduate & Research Department of Chemistry, Nirmalagiri College, Kannur-670 701, India.

Dr. Rosy Antony
Post Graduate & Research Department of Chemistry, Nirmalagiri College, Kannur-670 701, India.

View Book :- https://stm.bookpi.org/CACB-V6/article/view/1441