Experimental studies on the removal of heavy metal ion concentration using sugarcane bagasse in batch adsorption process

2021 ◽  
Vol 224 ◽  
pp. 256-272
Author(s):  
V. Yogeshwaran ◽  
A.K. Priya
Keyword(s):  
Heavy Metal ◽  
Sugarcane Bagasse ◽  
Metal Ion ◽  
Adsorption Process ◽  
Experimental Studies ◽  
Ion Concentration ◽  
Heavy Metal Ion ◽  
Batch Adsorption

scholarly journals Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4390
Author(s):  
Sevil Savaskan Yilmaz ◽  
Nuri Yildirim ◽  
Murat Misir ◽  
Yasin Misirlioglu ◽  
Emre Celik
Keyword(s):  
Heavy Metal ◽  
Quantum Chemical ◽  
Metal Ion ◽  
Molecular Mechanic ◽  
Ion Concentration ◽  
Heavy Metal Ion ◽  
Competitive Sorption ◽  
Cross Linker ◽  
The Cross

Poly(acrylic acid/Kryptofix 23-Dimethacrylate) superabsorbent polymer [P (AA/Kry23-DM) SAP] was synthesized by solution polymerization to remove Co, Ni, Cu, Cd, Mn, Zn, Pb, Cr, and Fe ions in water and improve the quality of the water. Kry23-DM cross-linker (1,4,7,13,16-Pentaoxa-10,19 diazo cyclohexene icosane di methacrylate) was synthesized using Kry23 and methacryloyl chloride. The characterization of the molecules was done by FTIR, TGA, DSC, and SEM techniques. The effects of parameters such as pH, concentration, and the metal ion interaction on the heavy metal ions uptaking of SAP was investigated. It was observed that P (AA/Kry23-DM) SAP has maximum water absorption, and the absorption increases with the pH increase. Adsorption rates and sorption capacity, desorption ratios, competitive sorption (qcs), and distribution coefficient (log D) of P(AA/Kry23-DM) SAP were studied as a function of time and pH with the heavy metal ion concentration. Langmuir and Freundlich isotherms of the P (AA/Kry23-DM) SAP were investigated to verify the metal uptake. Molecular mechanic (MM2), Assisted Model Building with Energy Refinement (AMBER), and optimized potentials for liquid simulations (OPLS) methods. were used in quantum chemical calculations for the conformational analysis of the cross-linker and the SAP. ΔH0f calculations of the cross-linker and the superabsorbent were made using Austin Model 1(AM1) method.

Heavy metal adsorption changes of EAF steel slag after phosphorus adsorption

2012 ◽  
Vol 65 (9) ◽  
pp. 1570-1576 ◽  
Author(s):  
Guanling Song ◽  
Lijing Cao ◽  
Xiao Chen ◽  
Wenhua Hou ◽  
Qunhui Wang
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Steel Slag ◽  
Ion Concentration ◽  
Metal Adsorption ◽  
Heavy Metal Ion ◽  
Heavy Metal Adsorption ◽  
Isothermal Adsorption ◽  
Phosphorus Adsorption ◽  
Cadmium And Lead

A kind of electric arc furnace (EAF) steel slag was phosphated, and its isothermal and dynamic adsorptions of copper, cadmium, and lead ions were measured to determine if heavy metal adsorption changes after phosphorus adsorption. The surface area increased greatly after the slag was phosphated. Isothermal adsorption experiments showed that the theoretical Qmax of the EAF steel slag on Cu2+, Cd2+, and Pb2+ improved 59, 50, and 89% respectively after it was phosphated. Dynamic adsorption results showed that the greatest adsorption capacities of unit volume of Cu2+, Cd2+, and Pb2+ were 2.2, 1.8, and 1.8 times that of the column packed with original EAF steel slag when the column was packed with phosphate EAF steel slag at the same heavy metal ion concentration. The breakthrough time, the exhaustion time and elution efficiency of the column also increased when the column was packed with phosphated EAF steel slag compared with that packed with original EAF steel slag. Phosphorus adsorption could further improve the heavy metal ion adsorption of the EAF steel slag.

scholarly journals System Control Scheme and Design Idea of Soft Sensing Model for Heavy Metal Ion Concentration

2021 ◽  
Vol 2033 (1) ◽  
pp. 012193
Author(s):  
Tianqi Wang ◽  
Yucheng Long ◽  
Xingchen Wang ◽  
San Zhang ◽  
Haiming Wang
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Ion Concentration ◽  
Heavy Metal Ion ◽  
System Control ◽  
Soft Sensing ◽  
Control Scheme ◽  
Sensing Model ◽  
Design Idea

scholarly journals PENGOLAHAN LIMBAH LOGAM BERAT INDUSTRI TEKSTIL MENGGUNAKAN FOTOKATALIS TiO2/ARANG AKTIF

Molekul ◽  
2008 ◽  
Vol 3 (1) ◽  
pp. 40 ◽  
Author(s):  
Kapti Riyani ◽  
Tien Setyaningtyas ◽  
Roy Andreas
Keyword(s):  
Waste Water ◽  
Heavy Metal ◽  
Metal Ion ◽  
Ph Effect ◽  
Ion Concentration ◽  
Heavy Metal Ion ◽  
Active Charcoal ◽  
Textile Waste ◽  
Uv Lamp ◽  
Textile Waste Water

Study about the use of active charcoal rice straws (AAJP) was done in order to decrease heavy metal ion on textile waste water by using photocatalyst AAJP/TiO2. Rice straws were gained from the Banyumas Regency and samples textile waste water from one of textile industry in Pemalang. This study was begun by the making of active charcoal from the rice straws, and then the modification of photocatalyst AAJP/TiO2 was done with the comparison 1:99, 2:98, 3:97, 4:96, 5:95. The test of heavy metal ion photoreduction was done with some parameters such as weight comparison (1:99, 2:98, 3:97, 4:96, 5:95), pH effect (2, 5, 7, 9, 13) and the effect of ray source (sun light and the UV lamp). Analysis of photocatalyst material used SEM and heavy metal ion concentration used AAS. Results show that optimum photocatalyst activity in weight comparison AAJP300oC / TiO2 (1:99) with decrease concentration was 65.02% for heavy metal ion, mean while AAJP700oC / TiO2 (3:97) with decreased concentration of heavy metal ion is 94.50%. Optimal process for heavy metal ion reduction occur at pH 2 with decreased concentration of heavy metal ion for AAJP300oC / TiO2 (1:99) is 99.87% and for AAJP700oC /TiO2 (3:97) is 100%. The source of UV lamp was good for heavy metal ion photoreduction (AAJP300oC/TiO2(1:99) was 99.87% and AAJP700oC/TiO2 (3:97) was 100%)

scholarly journals Removal of Zn (II) and Cu (II) Ions from Industrial Wastewaters Using Magnetic Biochar Derived from Water Hyacinth

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Benias C. Nyamunda ◽  
Terrence Chivhanga ◽  
Upenyu Guyo ◽  
Fidelis Chigondo
Keyword(s):  
Water Hyacinth ◽  
Contact Time ◽  
Metal Ion ◽  
Adsorption Process ◽  
Kinetic Studies ◽  
Ion Concentration ◽  
Batch Adsorption ◽  
Magnetic Biochar ◽  
Metal Ion Removal ◽  
High Sorption

This study evaluates the effectiveness of magnetic biochar (Fe2O3-EC) derived from water hyacinth in the removal of Cu+2 and Zn+2 from aqueous solution. Fe2O3-EC was prepared by chemical coprecipitation of a mixture of FeCl2 and FeCl3 on water hyacinth biomass followed by pyrolysis. The adsorbent was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDX). Batch adsorption studies on the effects of temperature, biosorbent dosage, contact time, and initial metal ion concentration were carried out. Fe2O3-EC exhibited optimum contact time, biosorbent dosage, and pH values of 65 min, 1.2 g, and 6, respectively. Fe2O3-EC exhibited strong magnetic separation ability and high sorption capability. Metal ion adsorption onto the biochar conformed to the Langmuir isotherm. Kinetic studies revealed that the adsorption process followed pseudo-second-order model. The calculated thermodynamic parameters showed that the adsorption process was feasible and exothermic in nature. These results have demonstrated that the use of Fe2O3-EC in metal ion removal could provide an alternative way to manage and utilize this highly problematic invasive species.

Functionalized SBA-15 by amine group for removal of Ni(II) heavy metal ion in the batch adsorption system

2020 ◽  
Vol 174 ◽  
pp. 301-310 ◽  
Author(s):  
Talib M. Albayati ◽  
Anaam A. Sabri ◽  
Dalia B. Abed
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Batch Adsorption ◽  
Amine Group ◽  
Adsorption System

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.

scholarly journals Enhancement of Separation Efficiency for Nano Filtration Membrane using Water-Soluble Polymer.

2019 ◽  
Vol 8 (2) ◽  
pp. 1470-1474
Keyword(s):  
Heavy Metal ◽  
Flow Rate ◽  
Metal Ion ◽  
Separation Efficiency ◽  
Water Soluble ◽  
Ion Concentration ◽  
Heavy Metal Ion ◽  
Binding Agent ◽  
Water Soluble Polymer ◽  
Filtration Membrane

In this study, an aqueous solution containing a mixture of heavy metal ion Cr(III) were treated by polymer enhanced Nanofiltration using polyethylene glycol as a binding agent polymer. The performance of PEG in removing heavy metal ion Cr (III) was compared with PEG and without PEG addition using polyamide Nano filtrationmembrane. The percentage rejection of heavy metal ions was studied under the different value of pH, metal ion concentration and flow rate. AtpH 10,percentage rejection of heavy metal ion was highest at around 99.2%,whereas,at 200ppm concentration and at 3(l/hm2 )flow rate percentage rejection of heavy metal ion with PEG was highest 99.5%,it was found that PEG gave higher percentage rejection of Cr(III) ion than without the addition of PEG

An integrated prediction model of heavy metal ion concentration for iron electrocoagulation process

2020 ◽  
Vol 391 ◽  
pp. 123628 ◽  
Author(s):  
Fengxue Zhang ◽  
Chunhua Yang ◽  
Hongqiu Zhu ◽  
Yonggang Li ◽  
Weihua Gui
Keyword(s):  
Heavy Metal ◽  
Prediction Model ◽  
Metal Ion ◽  
Ion Concentration ◽  
Heavy Metal Ion ◽  
Electrocoagulation Process
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