Kinetics and Equilibrium Modeling of Single and Binary Adsorption of Aluminum(III) and Copper(II) Onto Calamansi (Citrofortunella microcarpa) Fruit Peels

2021 ◽  
Author(s):  
Melanie G. Binauhan ◽  
Adonis P. Adornado ◽  
Lemmuel L. Tayo ◽  
Allan N. Soriano ◽  
Rugi Vicente C. Rubi
Keyword(s):  
Heavy Metal ◽  
Low Cost ◽  
Batch Adsorption ◽  
Spectroscopic Techniques ◽  
Aqueous Systems ◽  
Electron Microscopic ◽  
Experimental Conditions ◽  
Biosorption Process ◽  
Future System ◽  
Kinetics And Isotherms

The introduction of heavy metal wastes in the environment has posed health risks to both human and animals due to their toxicity. Since then, different studies have been explored for the possibility of utilizing new, low–cost, and sustainable adsorbent materials to get rid of heavy metals in the wastewater streams and aqueous solutions. This present study aimed to investigate and compare the adsorption ability of powdered calamansi (Citrofortunella microcarpa) fruit peels (PCFP) for the elimination of both Al(III) and Cu(II) ions in single (non–competitive) and binary (competitive) aqueous systems by batch adsorption techniques. Scanning electron microscopic and spectroscopic techniques were used to characterize the surface morphologies for the biosorbent and quantify the removal rates of heavy metal, respectively. Models were then used to describe in detail about the adsorption kinetics and isotherms for both single and binary metal systems. The influence and dependency of different experimental conditions on adsorption performance were also analyzed. The PCFP derived biosorbent was successful in removal of both Al(III) and Cu(II) ions in single (non–competitive) and binary (competitive) aqueous systems with 99, 70 and 91% adsorption rates, respectively. The biosorption process follows the Ho’s pseudo–second order kinetics. Furthermore, the Langmuir isotherm model was found helpful in explaining the adsorption mechanism. The dominating electrostatic interaction between adsorbents and adsorbates demonstrates monolayer adsorption at the binding sites on the surface of the peeling. Finally, the findings of this study will contribute to a better understanding of the adsorption process, as well as future system design applications in the treatment of heavy metal containing waste effluents.

scholarly journals Green Activated Magnetic Graphitic Carbon Oxide and Its Application for Hazardous Water Pollutants Removal

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 935 ◽  
Author(s):  
Lakshmi Prasanna Lingamdinne ◽  
Jong-Soo Choi ◽  
Yu-Lim Choi ◽  
Jae-Kyu Yang ◽  
Janardhan Reddy Koduru ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Low Cost ◽  
Reaction Medium ◽  
Carbon Oxide ◽  
Graphitic Carbon ◽  
Batch Adsorption ◽  
Ozone Oxidation ◽  
Fundamental Information ◽  
Pollutants Removal ◽  
Kinetics And Isotherms

Graphitic carbon oxide (GCO) and magnetic graphitic carbon oxide (MGCO) were prepared from sugar via optimized green activation by employing ozone oxidation, and applied to wastewater treatment. The maximal oxidation and adsorption yield of pollutants were achieved at pH 2.0−4.0, which is the optimized pH for ozone oxidation of GC to generate GCO. As-prepared GCO and MGCO were characterized using X-ray, infrared, and microscopic techniques. The MGCO has enough saturation magnetization (MS) of 41.38 emu g−1 for separation of the sorbent from the reaction medium by applying an external magnetic field. Batch adsorption of radioactive and heavy metals (Th(IV), Pb(II)), and a dye (methylene blue (MB)) using GCO and MGCO was evaluated by varying the adsorbent dose, equilibrium pH, contact time, initial metal and dye concentrations, and kinetics and isotherms. Adsorption kinetics and isotherm studies indicated that Th(IV), Pb(II), and MB adsorption were best described by pseudo-second-order kinetics and Langmuir isotherm with R2 (correlation coefficient) > 0.99, respectively. The maximum adsorption capacities for Th(IV), Pb(II), and MB were 52.63, 47.39, and 111.12 mg g−1 on GCO and 76.02, 71.94, and 76.92 mg g−1 on MGCO. GCO and MGCO are prospectively effective and low-cost adsorbents for ion removal in wastewater treatment. As prepared MGCO can be reused up to three cycles for Th(IV), Pb(II), and MB. This work provides fundamental information about the equilibrium adsorption isotherms and mechanisms for Th(IV), Pb(II), and MB on GCO and MGCO.

scholarly journals REMOVAL OF LEAD (Pb ) AND ZINC (Zn ) FROM AQUEOUS SOLUTIONS BY ADSORPTION ON VERMICULITE FROM ASKOS AREA IN MACEDONIA (NORTHERN GREECE).

2018 ◽  
Vol 36 (1) ◽  
pp. 182
Author(s):  
A. Bourliva ◽  
K. Michailidis ◽  
C. Sikalidis ◽  
G. Trontsios
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Low Cost ◽  
High Capacity ◽  
Freundlich Isotherm ◽  
Batch Adsorption ◽  
Northern Greece ◽  
Batch Type ◽  
Zinc Removal ◽  
Lead And Zinc

The lead and zinc removal from their aqueous solutions by vermiculite samples from Askos area, Northern Greece, was studied using a batch type method. Askos vermiculite is mainly consisted of mixed-layer phyllosilicates. A standard vermiculite sample from Kent, Connecticut was also used for comparison reasons. The concentration of the solutions used varied between 100 and 2000mg/L The maximum uptake capacity of the Askos vermiculite for lead and zinc was found to reach 95% and 96% from solutions containing 100mg/L, respectively. Much lower uptake capacities: 37% for lead and 76% for zinc were found for the Kent vermiculite. The experimental results showed that the Askos vermiculite exhibited an acceptable high capacity for removing metal ions from aqueous solutions. Thus, this untreated and low-cost mineral can find use in purifying heavy metal wastewaters. The uptake distribution coefficient (Kd) showed that the relative lead and zinc removal is higher for initial concentrations below 1000mg/L Batch adsorption experiments conducted at room temperature (22±1°C) showed that the adsorption patterns followed the Freundlich isotherm model. The heavy metal (Pb2+, Zn2+) removal is a rather complicated phenomenon related both to the aqueous chemistry of the elements and the interaction of their cationic species with the used materials. The removal procedure can be attributed to different processes such as ion exchange, adsorption, and precipitation.

scholarly journals Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Tadele Assefa Aragaw ◽  
Fekadu Mazengiaw Bogale
Keyword(s):  
Dye Removal ◽  
Low Cost ◽  
Dye Adsorption ◽  
Multilayer Adsorption ◽  
Experimental Conditions ◽  
Biosorption Process ◽  
Electrochemical Technology ◽  
Basic Operating ◽  
Treatment Technologies ◽  
Best Fit

Dyes, especially azo dyes contained in wastewaters released from textile, pigment, and leather industries, are entering into natural waterbodies. This results in environmental deterioration and serious health damages (for example carcinogenicity and mutagenesis) through food chains. Physiochemical, membrane processes, electrochemical technology, advanced oxidation processes, reverse osmosis, ion exchange, electrodialysis, electrolysis, and adsorption techniques are commonly used conventional treatment technologies. However, the limitations of most of these methods include the generation of toxic sludge, high operational and maintenance costs. Thus, technological advancements are in use to remediate dyes from effluents. Adsorption using the nonconventional biomass-based sorbents is the greatest attractive alternatives because of their low cost, sustainability, availability, and eco-friendly. We present and reviewed up-to-date publications on biomass-based sorbents used for dye removal. Conceptualization and synthesizing their state-of-the-art knowledge on their characteristics, experimental conditions used were also discussed. The merits and limitations of various biosorbents were also reflected. The maximum dye adsorption capacities of various biosorbents were reviewed and synthesized in the order of the biomass type (algae, agricultural, fungal, bacterial, activated carbon, yeast, and others). Surface chemistry, pH, initial dye concentration, temperature, contact time, and adsorbent dose as well as the ways of the preparations of materials affect the biosorption process. Based on the average dye adsorption capacity, those sorbents were arranged and prioritized. The best fit of the adsorption isotherms (for example Freundlich and Langmuir models) and basic operating parameters on the removal dyes were retrieved. Which biomass-based adsorbents have greater potential for dye removal based on their uptake nature, cost-effectiveness, bulk availability, and mono to multilayer adsorption behavior was discussed. The basic limitations including the desorption cycles of biomass-based adsorbent preparation and operation for the implementation of this technology were forwarded.

scholarly journals Char from Spent Tire Rubber: A Potential Adsorbent of Remazol Yellow Dye

2019 ◽  
Vol 5 (4) ◽  
pp. 76
Author(s):  
Nogueira ◽  
Matos ◽  
Bernardo ◽  
Pinto ◽  
Lapa ◽  
...  
Keyword(s):  
Experimental Data ◽  
Low Cost ◽  
Total Pore Volume ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Uptake Capacity ◽  
Experimental Conditions ◽  
Tire Rubber ◽  
Monolayer Adsorption ◽  
Pseudo Second Order

A char produced from spent tire rubber showed very promising results as an adsorbent of Remazol Yellow (RY) from aqueous solutions. Spent tire rubber was submitted to a pyrolysis process optimized for char production. The obtained char was submitted to chemical, physical, and textural characterizations and, subsequently, applied as a low-cost adsorbent for dye (RY) removal in batch adsorption assays. The obtained char was characterized by relatively high ash content (12.9% wt), high fixed-carbon content (69.7% wt), a surface area of 69 m2/g, and total pore volume of 0.14 cm3/g. Remazol Yellow kinetic assays and modelling of the experimental data using the pseudo-first and pseudo-second order kinetic models demonstrated a better adjustment to the pseudo-first order model with a calculated uptake capacity of 14.2 mg RY/g char. From the equilibrium assays, the adsorption isotherm was fitted to both Langmuir and Freundlich models; it was found a better fit for the Langmuir model to the experimental data, indicating a monolayer adsorption process with a monolayer uptake capacity of 11.9 mg RY/g char. Under the experimental conditions of the adsorption assays, the char presented positive charges at its surface, able to attract the deprotonated sulfonate groups (SO3−) of RY; therefore, electrostatic attraction was considered the most plausible mechanism for dye removal.

Removal of methylene blue using balanites aegyptiaca bark powder as low-cost and eco-friendly biosorbent

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ibrahim A. Amar ◽  
Salma M. Hassan ◽  
Fatima H. Aqeela ◽  
Mohamed Y. Najem ◽  
Fatima A. Altohami
Keyword(s):  
Methylene Blue ◽  
Low Cost ◽  
Point Of Zero Charge ◽  
Solution Temperature ◽  
Textile Dye ◽  
Solution Ph ◽  
Balanites Aegyptiaca ◽  
Experimental Conditions ◽  
Content Type ◽  
Kinetics And Isotherms

Purpose This paper aims to investigate the potential application of Balanites aegyptiaca bark powder (BABP) for removing a basic textile dye, methylene blue (MB), from aqueous solutions. Design/methodology/approach The biosorbent (BABP) was characterized using Fourier transform infrared spectroscopy (FTIR) and point of zero charge (pHPZC). Batch mode was selected to study the biosorption of MB onto BABP surface at different experimental conditions (shaking speed, contact time, initial solution pH, ionic strength, solution temperature, biosorbent dosage and initial dye concentration). Besides, the reusability of BABP for MB biosorption was also examined. Findings The biosorption results revealed that approximately 96% of MB was removed successfully at the optimized operational conditions. Pseudo-second-order and Langmuir models, respectively, better described the adsorption kinetics and isotherms. The monolayer biosorption capacity (qmax) for MB was about 97.09 mg/g. According to thermodynamics findings, the MB biosorption onto BABP is an exothermic and spontaneous process. The results demonstrate that BABP can be considered as potential eco-friendly, readily available and low-cost biosorbent for hazardous textile dyes removal from water bodies and also provides a promising method for minimization of agricultural solid wastes (e.g. plant barks). Originality/value The utilization of Balanites aegyptiaca bark powder (BABP), solid waste material, as low-cost and eco-friendly biosorbent for the removal of hazardous basic textile dye (methylene blue) from the aquatic environment.

scholarly journals A Study on Removal of Heavy Metal Chromium from Aqueous Chromium Solution Using Ipomoea carnea Root as Biosorbent

2019 ◽  
Vol 9 (4-A) ◽  
pp. 409-414 ◽  
Author(s):  
S. Krishnaveni ◽  
V. Thirumurugan
Keyword(s):  
Heavy Metal ◽  
Kinetic Model ◽  
Metal Ion ◽  
Low Cost ◽  
Ion Concentration ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Freundlich Isotherms ◽  
Ipomoea Carnea ◽  
Langmuir And Freundlich Isotherms

Pollution is the main problem due to heavy metal discharges from industries .  In this study Ipomoea carnea  (Family:Convolvulaceae) is selected to remove the heavy metal chromium from aqueous chromium solution using biosorbent . The present work focuses to evaluate the effectiveness of low cost absorbent Ipomoea carnea  root powder. Various parameters like pH, biosorbent, dose, contact time and metal ion concentration are investigated using batch studies. A kinetic model study and isotherm model fitting study are studied using Langmuir and Freundlich isotherms. The Thermodyamic parameters ∆G, ∆H and ∆S are also seen. The results reveal that it follows pseudo first order kinetic model and also fit in the Langmuir and Freundlich isotherms. The results are very much encouraging. So, it can be used as low cost biosorbent in controlling the pollution. Keywords: Pollution, Heavy metal, chromium, Ipomoea carnea, Batch adsorption study, Kinetics Langmuir and Freundlich isotherms and Thermodynamic study.

Adsorption of Copper (II) from Aqueous Solution Using Tea (Camellia sinensis) Leaf Waste

2020 ◽  
Vol 997 ◽  
pp. 113-120
Author(s):  
Hafizah Binti Naihi
Keyword(s):  
Heavy Metal ◽  
Contact Time ◽  
Metal Removal ◽  
Binding Capacity ◽  
Low Cost ◽  
Agricultural Waste ◽  
Heavy Metal Removal ◽  
Batch Adsorption ◽  
Biological Origin ◽  
Tea Waste

The extensive use of heavy metals such as copper in various industries has discharged a large amount of the metals into the environment which is toxic at higher concentrations. The use of low-cost agricultural waste of biological origin such as tea waste may be an economic solution to this problem. Tea waste is among the potential material to be developed as an adsorbent for heavy metal ions. Tea waste contains cellulose and lignin which have been reported having an excellent metal binding capacity. This study aims to use tea waste for the removal of Cu2+ ions. The effect of variation in different parameters like initial concentration of Cu2+ ions in solution, adsorbent dosage and contact time were investigated using batch adsorption method. The adsorbent, tea waste was characterized using a compound microscope and FTIR spectroscopy. Experimental results showed that the maximum removal of the copper ion by tea waste at optimum condition (pH 7, 60 min. contact time, 0.8 g adsorbent dose and 0.7 M concentration) is 74%. The adsorbent prepared from tea waste is efficient and it can be conveniently employed as a low-cost alternative in the treatment of wastewater for heavy metal removal.

scholarly journals On the Suitability of Almond Shells for the Manufacture of a Natural Low-Cost Bioadsorbent to Remove Brilliant Green: Kinetics and Equilibrium Isotherms Study

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
R. Melhaoui ◽  
Y. Miyah ◽  
S. Kodad ◽  
N. Houmy ◽  
M. Addi ◽  
...  
Keyword(s):  
Brilliant Green ◽  
Low Cost ◽  
Single Layer ◽  
Batch Adsorption ◽  
Almond Shell ◽  
Experimental Conditions ◽  
Layer Adsorption ◽  
Bet Method ◽  
Pseudo Second Order ◽  
Chemical Pollutant

Almond production generates a large number of coproducts, but the farmer’s interest mainly focuses on the nutritional and commercial aspects of the kernel for getting the best return from their harvests. Thus, almond coproducts such as almond shells that represent more than 70% of biomass remain underexplored. In this work, the suitability of almond shell powder (ASP) as a natural low-cost adsorbent was evaluated in the adsorption of brilliant green dye (BG), which is known as a chemical pollutant. Brunauer–Emmett–Teller (BET) method, for the determination of specific surface area, Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) techniques were performed to characterize the ASP adsorbent. The batch adsorption kinetic study for the removal of BG dye was carried out by varying pH, temperature, initial concentration of the dye, bioadsorbent dose, and contact time. It was found that 98% of BG dye is removed under the following optimal experimental conditions: ASP bioadsorbent dose of 1 g/L at T = 25°C, pH = 6.8, and C0 = 1 g/L, which proves that ASP can be used as an excellent low-cost bioadsorbent for the removal of BG dye from wastewater. The experimental isotherm data were analyzed using Freundlich and Langmuir models. The results show the best correlation with single-layer adsorption, and the adsorption kinetics seems to follow a pseudo-second-order model.

scholarly journals MAGNETICALLY MODIFIED SUGARCANE BAGASSE BIOCHAR AS CADMIUM REMOVAL AGENT IN WATER

2022 ◽  
Vol 23 (1) ◽  
pp. 294-309
Author(s):  
Nur Izzaty Syahirah Baharudin ◽  
Noraini Mohamed Noor ◽  
Ezzat Chan Abdullah ◽  
Raihan Othman ◽  
Mubarak Nasibab Mujawar
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Heavy Metal ◽  
Sugarcane Bagasse ◽  
High Performance ◽  
Batch Adsorption ◽  
Magnetic Biochar ◽  
X Ray ◽  
Optimum Parameters ◽  
Kinetics And Isotherms

Heavy metals are hazardous to health at certain levels. Currently, heavy metals are removed by physicochemical treatments, such as adsorption, flotation, and electrochemical deposition, and also biological treatments, such as algal biofilm reactor and anaerobic ammonium oxidation. In this study, magnetic biochar was produced to enhance the effectiveness and performance of the adsorbent for heavy metal removal. This study aimed to synthesise high-performance magnetic biochar, to determine the optimum parameters and conditions for high yield of magnetic biochar and high removal of cadmium (Cd2+) from aqueous solution, and to determine the adsorption kinetics and isotherms for Cd2+ removal. Nickel oxide (NiO)-impregnated sugarcane bagasse was subjected to slow pyrolysis to produce magnetic biochar. The impregnated metal, pyrolysis temperature, and pyrolysis time were varied to determine the optimum parameters and conditions to produce high-performance magnetic biochar. The removal of Cd2+ from aqueous solution and batch adsorption study were conducted. The synthesised magnetic biochar was characterised using field-emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area, Fourier transform infrared (FTIR), and vibrating sample magnetometer (VSM). The adsorption data agreed well with the pseudo-second-order model and followed the Langmuir isotherm model. This study achieved 88.47% removal efficiency of Cd2+ from aqueous solution. Thus, the removal of this heavy metal as a human carcinogen reduces the hazardous effects on human health and reduces the toxicity in the environment. ABSTRAK: Logam berat adalah berbahaya bagi kesihatan di peringkat tertentu. Pada masa ini, logam berat disingkirkan melalui rawatan fizikokimia, seperti penyerapan, pengapungan, dan deposit elektrokimia, dan rawatan biologikal, seperti reaktor biofilem alga dan oksidasi ammonium anerobik. Kajian ini menghasilkan biochar magnetik bagi meningkatkan keberkesanan dan prestasi penyerapan penyingkiran logam berat. Kajian ini bertujuan bagi mengsintesis biochar magnetik pada prestasi tinggi, bagi menghasilkan parameter optimum dan keadaan pengeluaran tinggi biochar magnetik dan penyingkiran tinggi kadmium (Cd2+) daripada larutan akues, dan bagi mendapatkan penyerapan kinetik dan isoterma penyingkiran Cd2+. Nikel oksida (NiO)-impregnat hampas tebu adalah berdasarkan pirolisis perlahan bagi menghasilkan biochar magnetik. Logam yang terimpregnat, suhu pirolisis dan tempoh pirolisis dipelbagaikan bagi mendapatkan parameter optimum dan keadaan bagi menghasilkan biochar magnetik berprestasi-tinggi. Penyingkiran Cd2+ daripada larutan akues dan kajian penyerapan berkumpulan telah dibuat. Biochar magnetik yang disentisis diklasifikasikan menggunakan mikroskopi elektron imbasan medan-pancaran (FESEM), tenaga sebaran X-ray (EDX), pembelauan X-ray (XRD), kawasan permukaan Brunauer-Emmett-Teller (BET), Penjelmaan Fourier inframerah (FTIR), dan sampel getaran magnetometer (VSM). Data penyerapan menunjukkan persetujuan dengan model aturan-kedua-pseudo dan mengikuti model isoterma Langmuir. Kajian ini mencapai 88.47% keberkesanan penyingkiran Cd2+ daripada larutan akues. Oleh itu, penyingkiran logam berat ini sebagai karsinogen manusia mengurangkan kesan teruk pada kesihatan manusia dan pengurangan toksik pada alam sekitar.

scholarly journals Studies on the Removal of Red Industrial Dye Using Teak Leaf, Maize Corn and Babool Tree Bark Carbons -A Comparison

2010 ◽  
Vol 7 (3) ◽  
pp. 770-774
Author(s):  
N. Kannan ◽  
A. Vijayakumar ◽  
P. Subramaniam
Keyword(s):  
Activated Carbons ◽  
Low Cost ◽  
Tree Bark ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Adsorption Parameters ◽  
Experimental Conditions ◽  
First Order Kinetics ◽  
Initial Ph ◽  
Intra Particle Diffusion

Activated carbons prepared from teak leaf (TLC), maize corn (MCC) and babool tree bark (BTBC) were used to study adsorption of red industrial dye under various experimental conditions. Effect of various experimental parameters such as initial concentration, adsorbent dosage, particle size, contact time and initial pH of solution was studied. Batch adsorption studies were carried out at room temperature (30±1°C). Adsorption parameters were modeled by Freundlich and Langmuir isotherm models. Adsorption data were fitted with the Natarajan and Khalaf, Lagergren and Bhattacharya -Venkobachar equations. The high value of 21.28 was obtained from Langmuir plot indicates maize corn carbon (MCC) is the best low cost adsorbent. The adsorption process followed first order kinetics, with intra- particle diffusion as one of the rate limiting steps

Sign in / Sign up

Export Citation Format

Share Document