Use of agro-waste (Musa paradisiaca peels) as a sustainable biosorbent for toxic metal ions removal from contaminated water

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Contact Time ◽  
Metal Ion ◽  
Equilibrium Concentration ◽  
Ion Concentration ◽  
Contaminated Water ◽  
Musa Paradisiaca ◽  
Percentage Removal ◽  
Adsorbent Dose

A study of removal of heavy metal ions from heavy metal contaminated water using agro-waste was carried out with Musa paradisiaca peels as test adsorbent. The study was carried by adding known quantities of lead (II) ions and cadmium (II) ions each and respectively into specific volume of water and adding specific dose of the test adsorbent into the heavy metal ion solution, and the mixture was agitated for a specific period of time and then the concentration of the metal ion remaining in the solution was determined with Perkin Elmer Atomic absorption spectrophotometer model 2380. The effect of contact time, initial adsorbate concentration, adsorbent dose, pH and temperature were considered. From the effect of contact time results equilibrium concentration was established at 60minutes. The percentage removal of these metal ions studied, were all above 90%. Adsorption and percentage removal of Pb2+ and Cd2+ from their aqueous solutions were affected by change in initial metal ion concentration, adsorbent dose pH and temperature. Adsorption isotherm studies confirmed the adsorption of the metal ions on the test adsorbent with good mathematical fits into Langmuir and Freundlich adsorption isotherms. Regression correlation (R2) values of the isotherm plots are all positive (>0.9), which suggests too, that the adsorption fitted into the isotherms considered.

scholarly journals ANALISA EFISIENSI PENYERAPAN ION LOGAM MENGGUNAKAN CANGKANG BUAH KETAPANG (Terminalia catappa L.)

2019 ◽  
Vol 4 (1) ◽  
pp. 42
Author(s):  
Linda Hevira ◽  
Rahmiana Zein ◽  
Edison Munaf
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Ions ◽  
Environmental Pollution ◽  
Contact Time ◽  
Metal Ion ◽  
Functional Group ◽  
Absorption Efficiency ◽  
Ion Concentration

On cause of environmental pollution is the presence of heavy metals. Heavy metal such as Cd (II), Pb (II) and Cu (II) are the metals commonly found in water pollution. The untapped shell of ketapang fruit can be used as an absorbent because it has an active side that can bind to the metal ion. From the research with batch sistem was found that the absorption efficiency of metal Cd (II), Pb (II) and Cu (II) by shell of ketapang will be optimum if done at pH 6 with contact time 60 minute for ion Cd(II), 45 minute for ion Pb (II) and 75 minute for ion Cu. The optimum stirring speed of each is 100 rpm, 150 rpm and 100 rpm. The optimum absorption efficiency occured at concentration of 10 mg/L on metal Cd (II) and Pb (II) that are 86,38 % and 98,51 % while the Cu (II) metal at 5 mg/L concentration is 94,06 % with mass of ketapang 0.1 g,0.5 g and 0.5 g each metal ion. The metal ion concentration was analyzed by AAS and the dominant functional group binding metal ions was analiyzed by FTIR Salah satu penyebab pencemaran lingkungan adalah terdapatnya logam berat. Logam berat seperti Cd, Pb dan Cu merupakan logam yang sering ditemukan dalam pencemaran air. Cangkang buah ketapang yang tidak termanfaatkan dapat dijadikan sebagai penyerap karena mempunyai sisi aktif yang dapat berikatan dengan ion logam. Dari penelitian dengan sistem batch didapatkan bahwa efisiensi penyerapan ion logam Cd (II), Pb (II) dan Cu II) oleh cangkang buah ketapang akan optimum jika dilakukan pada pH 6 dengan waktu kontak 60 menit untuk ion Cd (II), 45 menit untuk ion Pb (II) dan 75 menit untuk ion Cu (II). Kecepatan pengadukan optimum masing-masingnya adalah 100 rpm, 150 rpm dan 100 rpm. Efisiensi penyerapan optimum terjadi pada konsentrasi 10 mg/L pada logam Cd(II) dan Pb (II) yaitu 86,38 % dan 98, 51 %, sedangkan logam Cu (II) terjadi pada konsentrasi 5 mg/L yaitu 94,06 % dengan massa cangkang buah ketapang 0.1 g, 0.5 dan 0.5 g pada masing-masing ion logam. Konsentrasi ion logam dianalisis dengan Spektrofotometri Serapan Atom dan gugus fungsi dominan yang mengikat ion logam dianalisis dengan FTIR.

scholarly journals Nano sized carbonized waste biomass for heavy metal ion remediation

2014 ◽  
Vol 16 (4) ◽  
pp. 6-13 ◽  
Author(s):  
Garima Mahajan ◽  
Dhiraj Sud
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Contact Time ◽  
Metal Ion ◽  
Agricultural Waste ◽  
Ion Concentration ◽  
Isotherm Models ◽  
Order Kinetic ◽  
Waste Biomass

Abstract Utilization of agricultural waste material with approach to enhance the heavy metal remediation properties by carbonizing the biomass at nano size particles has been explored in present investigation from aqueous solutions. In this study the lignocellulosic, nitrogenous agricultural waste biomass Delbergia sissoo pods (DSP) has been tried for sequestering of Cd (II), Pb (II) and Ni (II) metal ions from aqueous solutions. Batch experiments were performed for removal of targeted metal ions keeping in consideration the preliminary affecting parameters such as effect of adsorption dose, pH, initial metal ion concentration, stirring speed and contact time. The sorption studies were analyzed by using, Freundlic isotherm and Langmuir isotherm models. The kinetics of the process was evaluated by pseudo pseudo-first order and pseudo second order kinetic models. Studies reveal that the equilibrium was achieved with in 30 min of the contact time at optimized parameters. Analytical studies of biosorbent were done by means of FT-IR, SEM and XRD. Desorption experiments were carried out using HCl solution with a view to regenerate the spent adsorbent and to recover the adsorbed metal ions.

scholarly journals Batch Sorption Experiments: Langmuir and Freundlich Isotherm Studies for the Adsorption of Textile Metal Ions onto Teff Straw (Eragrostis tef) Agricultural Waste

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Mulu Berhe Desta
Keyword(s):  
Heavy Metals ◽  
Metal Ions ◽  
Contact Time ◽  
Metal Ion ◽  
Low Cost ◽  
Agricultural Waste ◽  
Equilibrium Concentration ◽  
Eragrostis Tef ◽  
Batch Adsorption ◽  
Textile Effluents

Adsorption of heavy metals (Cr, Cd, Pb, Ni, and Cu) onto Activated Teff Straw (ATS) has been studied using batch-adsorption techniques. This study was carried out to examine the adsorption capacity of the low-cost adsorbent ATS for the removal of heavy metals from textile effluents. The influence of contact time, pH, Temperature, and adsorbent dose on the adsorption process was also studied. Results revealed that adsorption rate initially increased rapidly, and the optimal removal efficiency was reached within about 1 hour. Further increase in contact time did not show significant change in equilibrium concentration; that is, the adsorption phase reached equilibrium. The adsorption isotherms could be fitted well by the Langmuir model. The value in the present investigation was less than one, indicating that the adsorption of the metal ion onto ATS is favorable. After treatment with ATS the levels of heavy metals were observed to decrease by 88% (Ni), 82.9% (Cd), 81.5% (Cu), 74.5% (Cr), and 68.9% (Pb). Results indicate that the freely abundant, locally available, low-cost adsorbent, Teff straw can be treated as economically viable for the removal of metal ions from textile effluents.

scholarly journals Heavy Metal Removal from Aqueous Solution Using Biosurfactants Produced by Pseudomonas aeruginosa with Corn Oil as Substrate

2018 ◽  
Vol 18 (3) ◽  
pp. 472
Author(s):  
Venty Suryanti ◽  
Sri Hastuti ◽  
Tutik Dwi Wahyuningsih ◽  
Mudasir Mudasir ◽  
Dian Kresnadipayana ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Contact Time ◽  
Metal Ion ◽  
Metal Removal ◽  
Corn Oil ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Removal Capacity

The batch removal of Cu(II), Cd(II) and Pb(II) from individual heavy metal ion aqueous synthetic solution using biosurfactants produced by Pseudomonas aeruginosa with corn oil as substrate was investigated. The metal ion removal process of crude preparation biosurfactants (CPB) was established to be dependent on the initial pH and contact time. The optimum metal removal was observed at pH 6.0 of the initial metal solution and 10 min of contact time. The affinity sequence for metal ion removal was Pb(II)>Cd(II)>Cu(II). The removal capacity value of biosurfactant for Cu(II), Cd(II) and Pb(II) from single metal ions solution were 0.169, 0.276 and 0.323 mg/g, respectively. The removal capacity value of biosurfactant for Cu(II), Cd(II) and Pb(II) from multi metal ions solution were 0.064, 0.215 and 0.275 mg/g, respectively. The removal capacity of individual metal ion was diminished by the presence of other metal ions in multi metal ions from synthetic aqueous solution. The removal capacity value of biosurfactant for Cu(II), Cd(II) and Pb(II) from silver industry wastewater were 0.027, 0.055 and 0.291 mg/g, respectively. The results indicated that biosurfactants have potential to be used in the remediation of heavy metals in industrial wastewater.

scholarly journals Bio-sorption for Effective Removal of Chromium (VI) from Wastewater Using Moringa Stenopetala Seed Powder (MSSP) and Banana Peel Powder (BPP)

2020 ◽  
Author(s):  
Tolera Seda Badessa ◽  
Esayas Wakuma ◽  
Ali Mohammed Yimer
Keyword(s):  
Sorption Capacity ◽  
Contact Time ◽  
Metal Ion ◽  
Ion Concentration ◽  
Banana Peel ◽  
Order Kinetic ◽  
Moringa Stenopetala ◽  
Kinetics Of Adsorption ◽  
Banana Peel Powder ◽  
Adsorbent Dose

Abstract Chromium is an extremely toxic metal in the form of Cr (VI) that causes severe environmental and health problems. Therefore, the aim of this study was to remove chromium ions from wastewater by using cost effective and environmentally friendly bio-sorbents; Moringa stenopetala Seed Powder (MSSP), and Banana Peel Powder (BPP) and to evaluate its adsorption capacities as bio-sorbents. FT-IR characterization of the adsorbents showed that there was a change in the functional groups of the structure of both adsorbents before and after the adsorption that might be due to the adsorption processes taken place on the surface of adsorbent. Adsorption experiments were carried out as batch studies with different contact times, pH, adsorbent dose, initial metal ion concentration, and temperature. Results showed maximum removal efficiency for Cr (VI) at 120 minutes contact time, adsorbent dose of 20 g/L and pH 2 by MSSP and pH 4 by BPP. The percentage removal of Cr(VI) increased with increasing adsorbent dose( from 5g/L to 20 g/L) and contact time (from 60 min to 120 min). Freundlich isotherm model showed a better fit to the equilibrium data than the Langmuir model. The kinetics of adsorption for chromium was well represented by pseudo-second order kinetic model and the calculated equilibrium sorption capacity of the model showed good agreement with the sorption capacity obtained from Experimental results.

scholarly journals Insights into the Recent Use of Modified Adsorbents in Removing Heavy Metal Ions from Aqueous Solution

2021 ◽  
Vol 12 (2) ◽  
pp. 1884-1898
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Metal Removal ◽  
Low Cost ◽  
Ion Concentration ◽  
Future Research ◽  
Batch Tests

Natural water gets contaminated with heavy metal ions because of industrial effluents' discharge into the aquatic environment. As these heavy metal ions cause various health hazards, they should be removed from the aqueous solution. Heavy metal ion concentration in the aqueous solution is very less, so conventional metal removal and recovery processes cannot be applied here. The adsorption method is a great alternative to all these processes as it is a cost-effective and easy method. The use of natural, low-cost materials as adsorbents is eco-friendly also. However, metal uptake capacity of low-cost materials is very less. So, modification is required for low-cost materials to increase their efficiency. In the present review, different modification procedures adopted by different researchers have been discussed. Different low-cost materials used are sawdust, fruit and vegetable wastes, soil, minerals, etc. The modifying agents are heat, acids, bases, and other chemicals. Nevertheless, most of the studies are limited to batch tests only. Future research should be carried out on the extension of batch tests to column study for the large-scale treatment of contaminated water, and the cost of modification procedures and their impact on the environment should also be assessed.

scholarly journals Synthesis and Characterization of Piperidin-4-one Derivatives Using Green Solvent

2020 ◽  
Vol 32 (4) ◽  
pp. 727-732
Author(s):  
Harish Sharma ◽  
Rajesh Kumar ◽  
Mahesh Chandra Vishwakarma ◽  
Sushil Kumar Joshi ◽  
Narender Singh Bhandari
Keyword(s):  
Metal Ions ◽  
Contact Time ◽  
Metal Ion ◽  
Low Cost ◽  
Ion Concentration ◽  
Green Solvent ◽  
Optimum Ph ◽  
Influence Of Ph ◽  
Biosorption Equilibrium

In present study, Pyras pashia leaves were used as low cost biosorbent to study biosorption of Cu(II), Pb(II) and Cd(II) ions from contaminated wastewater. In the employed batch methods pH, contact time, metal ion concentration, temperature, biosorbent doses were taken as study parameters. The pH was varied from pH 1-9 to study the influence of pH on biosorption of metal ions by Pyras pashia. The optimum pH for the removal of Cu(II), Pb(II) and Cd(II) is observed at pH 5. The biosorption equilibrium time was varied between 15-75 min. Langmuir, Freundlich and Temkin isotherms were employed to study the biosorption. The biosorption parameter fits well with Langmuir isotherm. The biosorption of metal ions was increased with increasing biosorbent dose and contact time while increase in pH, metal ion concentration and temperature decrease the biosorption. Thermodynamic data suggest that the bisorption process was spontaneous, feasible and endothermic.

scholarly journals Palm Kernel Shell as an effective adsorbent for the treatment of heavy metal contaminated water

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Rabia Baby ◽  
Bullo Saifullah ◽  
Mohd Zobir Hussein
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Heavy Metal Contamination ◽  
Agricultural Waste ◽  
Palm Kernel ◽  
Second Order ◽  
Isotherm Models ◽  
Contaminated Water ◽  
Pseudo Second Order

AbstractHeavy metal contamination in water causes severe adverse effects on human health. Millions of tons of kernel shell are produced as waste from oil palm plantation every year. In this study, palm oil kernel shell (PKS), an agricultural waste is utilized as effective adsorbent for the removal of heavy metals, namely; Cr6+, Pb2+, Cd2+ and Zn2+ from water. Different parameters of adsorptions; solution pH, adsorbent dosage, metal ions concentration and contact time were optimized. The PKS was found to be effective in the adsorption of heavy metal ions Cr6+, Pb2+, Cd2+ and Zn2+ from water with percentage removal of 98.92%, 99.01%, 84.23% and 83.45%, respectively. The adsorption capacities for Cr6+, Pb2+, Cd2+ and Zn2+ were found to be 49.65 mg/g, 43.12 mg/g, 49.62 mg/g and 41.72 mg/g respectively. Kinetics of adsorption process were determined for each metal ion using different kinetic models like the pseudo-first order, pseudo-second order and parabolic diffusion models. For each metal ion the pseudo-second order model fitted well with correlation coefficient, R2 = 0.999. Different isotherm models, namely Freundlich and Langmuir were applied for the determination of adsorption interaction between metal ions and PKS. Adsorption capacity was also determined for each of the metal ions. PKS was found to be very effective adsorbent for the treatment of heavy metal contaminated water and short time of two hours is required for maximum adsorption. This is a comprehensive study almost all the parameters of adsorptions were studied in detail. This is a cost effective and greener approach to utilize the agricultural waste without any chemical treatment, making it user friendly adsorbent.

Preparation of a Novel Adsorbent and Heavy Metal Ion Adsorption

2014 ◽  
Vol 9 (4) ◽  
pp. 155892501400900 ◽  
Author(s):  
Chuanfeng Zang ◽  
Desuo Zhang ◽  
Jiaqing Xiong ◽  
Hong Lin ◽  
Yuyue Chen
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Hyperbranched Polymer ◽  
Metal Ion ◽  
Ion Concentration ◽  
Cotton Fibers ◽  
Practical Applications ◽  
Metal Ion Adsorption ◽  
Ft Ir ◽  
Removal Of Metal Ions

The article focuses on the preparation of a novel adsorbent by grafting amino-terminated hyperbranched polymer to cotton fibers and the adsorption of heavy metal ions from aqueous solution. The prepared novel adsorbent was characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The experimental results show that the amino-terminated hyperbranched polymer was grafted to the oxidized cotton fibers, and the adsorbent with amino-terminated hyperbranched polymer was successfully obtained. The grooves on the surface of the grafted cotton fiber were filled with amino-terminated hyperbranched polymer. The adsorption experiments show that the adsorption amount of Cu2+ and Pb2+ was up to 16.1 mg/g and 13.4 mg/g with the metal ion concentration of 319.5 ppm and 315.9 ppm, respectively. When the dosage of adsorbent was 1.5 g in 100 mL metal ion solution, the adsorption rate of Cu2+ and Pb2+ reached 73.5 wt. % and 71.2 wt.%, respectively. The use of the adsorbent for the removal of metal ions is considered to be efficient and have great potential for practical applications.

scholarly journals Adsorptive Removal of Pb(II), Cu(II) and Cd(II) Ions onto Rubus ellipticus as Low-Cost Biosorbent

2020 ◽  
Vol 32 (3) ◽  
pp. 495-500
Author(s):  
Rajesh Kumar ◽  
Harish Sharma ◽  
M.C. Vishwakarma ◽  
S.K. Joshi ◽  
N.S. Bhandari ◽  
...  
Keyword(s):  
Contact Time ◽  
Metal Ion ◽  
Low Cost ◽  
Ion Concentration ◽  
Adsorption Efficiency ◽  
Adsorptive Removal ◽  
Langmuir Adsorption ◽  
Equilibrium Data ◽  
Rubus Ellipticus ◽  
Adsorbent Dose

In the present study, removal efficiency (%) of Rubus ellipticus leaves (REL) as an adsorbent for the removal of Pb(II), Cu(II) and Cd(II) ions was investigated. Different parameters i.e., pH, contact time, temperature, adsorbent dose and initial metal ion concentration were investigated to obtain the optimum adsorption efficiency. At pH 4, a maximum adsorption was 84.6, 80.2 and 74.5 % for Pb(II), Cu(II) and Cd(II) ions, respectively. The maximum adsorption of all the three metal ions obtained at contact time (75 min), initial metal ion concentration (10 mg/L), temperature (25 ºC) and adsorbent dose (5.0 g). The equilibrium adsorption of Pb(II), Cu(II) and Cd(II) ions at different temperature was described by Langmuir, Freundlich and Temkin isotherms. The equilibrium data fitted well the Langmuir adsorption isotherm. Thermodynamic parameters like Gibb′s free energy (ΔGº), enthalpy (ΔHº) and entropy (ΔSº) were also calculated. The calculated parameters indicated that adsorption of Pb(II), Cu(II) and Cd(II) ions onto Rubus ellipticus leaves (REL) was spontaneous (ΔGº < 0), endothermic (ΔGº > 0). The feasibility of the process was evident from the positive value of ΔSº.

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