Chemically modified Moringa oleifera seed husks as low cost adsorbent for removal of copper from aqueous solution

2017 ◽  
Author(s):  
Faridah Ghafar ◽  
Aminullah Mohtar ◽  
Norzahir Sapawe ◽  
Norulakmal Nor Hadi ◽  
Marmy Roshaidah Mohd Salleh
Keyword(s):  
Aqueous Solution ◽  
Moringa Oleifera ◽  
Low Cost ◽  
Chemically Modified ◽  
Moringa Oleifera Seed

Green mediated biosorption of Pb (II) from aqueous solution using chemically modified low cost Grewia optiva leaves

2020 ◽  
Vol 195 ◽  
pp. 413-420
Author(s):  
Syed Muhammad Salman ◽  
Muhammad Wahab ◽  
Muhammad Zahoor ◽  
Durre Shahwar ◽  
Sabiha Sultana ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Chemically Modified ◽  
Grewia Optiva

scholarly journals Moringa oleifera seed as a natural coagulant to treat low-turbidity water by in-line filtration

2019 ◽  
Vol 14 (6) ◽  
pp. 1
Author(s):  
João Vitor Mariano Ribeiro ◽  
Priscila Vega Andrade ◽  
Adriano Gonçalves dos Reis
Keyword(s):  
Aqueous Solution ◽  
Moringa Oleifera ◽  
Cationic Proteins ◽  
Natural Coagulant ◽  
Jar Test ◽  
Coagulation Mechanism ◽  
Apparent Color ◽  
Ph Range ◽  
Moringa Oleifera Seed ◽  
Filtration Technique

This study evaluated the use of Moringa oleifera (MO) seed as a natural coagulant for the removal of turbidity and apparent color in the water treatment with low initial turbidity through the in-line filtration technique. The morphology and surface charge were investigated by characterization techniques such as optical microscopy, laser particle size, and zeta potential. The cationic proteins of the MO seed were extracted in aqueous solution. The jar test showed the potability standards for turbidity and apparent color were reached in the pH range from 4.0 to 8.5 and dosages ≥ 5 mg L-1 of MO. The dominant coagulation mechanism is adsorption and charge neutralization. This study showed that treating low-turbidity water with MO seed by the in-line filtration technique is possible.

scholarly journals Adsorptive Removal of Methyl Red from Aqueous Solution using Charred and Xanthated Sal (Shorea robusta) Sawdust

2020 ◽  
Vol 1 (1) ◽  
pp. 37-44
Author(s):  
Krishna Bahadur Dawadi ◽  
Mahesh Bhattarai ◽  
Puspa Lal Homagai
Keyword(s):  
Aqueous Solution ◽  
Contact Time ◽  
Low Cost ◽  
Ion Concentration ◽  
Maximum Adsorption Capacity ◽  
Methyl Red ◽  
Adsorptive Removal ◽  
Shorea Robusta ◽  
Chemically Modified ◽  
Saw Dust

Adsorptive removal of methyl red (MR) from aqueous solution onto chemically modified Charred Sal (Shorea robusta) Saw-Dust (CSSD) and Xanthated Sal Saw-Dust (XSSD) has been investigated. The surface modification is characterized by Fourier transformed infra-red (FTIR) spectroscopy, scanning electron microscopy (SEM) and elemental Analysis. Different parameters are studied such as contact time, optimum pH, and initial ion concentration. Maximum dye removal is observed at pH 4 for charred and xanthated Sal saw dust. The dye can be quantitatively removed onto the surface of these adsorbent. At a contact time of 3-4 hours maximum adsorption capacity (qmax) for CSSD and XSSD are found to be 70 mg/g and 130 mg/g respectively. Adsorption kinetic data are best fitted onto pseudo second order. The obtained result indicated an excellent alternative for the treatment of dye contaminated waste water using such chemically modified Sal saw dust at low cost with better efficiency.

scholarly journals Biosorption of Pb(II) and Cd(II) Ions from Aqueous Solution by Chemically Modified Syzygium cumini Leaves and its Equilibrium, Kinetic and Thermodynamic Studies

2020 ◽  
Vol 63 (1) ◽  
pp. 18-29
Author(s):  
Syed Muhammad Salman ◽  
Sardar Muhammad ◽  
Mahmood Iqbal ◽  
Muhammad Aijaz ◽  
Muhammad Siddique ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Contact Time ◽  
Low Cost ◽  
Second Order ◽  
Isotherm Models ◽  
Syzygium Cumini ◽  
Absorption Frequency ◽  
Chemically Modified ◽  
Pseudo Second Order ◽  
Biomass Dosage

  The removal of Pb (II) and Cd (II) ions from aqueous solution by a novel low-cost biosorbent; chemically modified Syzygium cumini leaves (CMSCL) was studied. The effects of biomass dosage, pH, concentration, temperature and contact time were investigated. Characterization of CMSCL was carried out by FT-IR spectroscopy, pore size, and surface area analyzer. The maximum biosorption capability of CMSCL for Pb (II) and Cd (II) ions was 104 and 50 mg/g at optimum conditions of pH 6 and 7, biomass dosage of 5 g/L, contact time of 120 and 90 min and temperature of 50 and 40 0C, respectively. The experimental data was analyzed using pseudo-first order and pseudo-second order kinetics models. The biosorption of Pb (II) and Cd (II) followed pseudo-second order model. Langmuir, Freundlich and Temkin adsorption isotherm models were applied to explain the removal of heavy metal ions by CMSCL biosorbent. Langmuir isotherm model fitted better than other isotherm models. Thermodynamics parameters such as �H0, �G0 and �S0 showed that the biosorption of Pb (II) and Cd (II) ions onto CMSCL was spontaneous, exothermic and feasible under examined conditions. The occurrence of various functional groups and change in the absorption frequency after metal uptake indicates that complexation was the main mechanism involved in the process of biosorption. Based on the present investigation, it was proved that CMSCL is an effective, alternative and economical biosorbent for the removal of Pb (II) and Cd (II) ions. Keywords: 

scholarly journals Effectiveness of Moringa oleifera seed powder as qcoagulant and reduction of TSS, COD, total coliform in the face water

2019 ◽  
Vol 61 (1) ◽  
pp. 101-109
Author(s):  
Nguyen Van Hoai Phong ◽  
Phan Thi Kim Thi ◽  
Nguyen Thao Nhu ◽  
Huynh Thi Thanh Truc ◽  
Keyword(s):  
Water Sample ◽  
Moringa Oleifera ◽  
Low Cost ◽  
Control Sample ◽  
Total Coliform ◽  
Coliform Bacteria ◽  
Coagulation Time ◽  
The Face ◽  
Natural Coagulants ◽  
Moringa Oleifera Seed

The use of plant-deriveded natural coagulants in water treatment systems is seen as solution to replace chemical coagulants. Among them, the Moringa oleifera has proved to be one of the most effective natural, low - cost, environmentally friendly water coagulants. In this study, Moringa oleifera has used from 0 g (control sample without coagulants) to 2.0 g of Moringa oleifera seed powder in one liter of the Tien river water sample, coagulation time in 1 hour, 3 hours, 6 hours. The results of the study showed that Moringa oleifera seed powder has antibacterial ability when adding 0.4 g per liter of water treated. The water sample has TSS of 93.3 mg/l, COD of 101 mg/l, and the presence of 1530 MPN/100ml Coliform bacteria. After one hour coagulation of treatment, it reduced to TSS, COD, and Coliform were found to be 13.3 mg/l, 18.7 mg/l, and 9 MPN/100ml, respectively. The efficiency of reduction for 76.92% TSS, 81.57% COD, and 99.41% Coliform.

Cellulose bearing Schiff base and carboxylic acid chelating groups: a low cost and green adsorbent for heavy metal ion removal from aqueous solution

2016 ◽  
Vol 74 (8) ◽  
pp. 1780-1792 ◽  
Author(s):  
R. Saravanan ◽  
L. Ravikumar
Keyword(s):  
Aqueous Solution ◽  
Schiff Base ◽  
Carboxylic Acid ◽  
Metal Binding ◽  
Metal Ion ◽  
Low Cost ◽  
Metal Ion Removal ◽  
Chemically Modified ◽  
13C Nuclear Magnetic Resonance ◽  
Modified Cellulose

Chemically modified cellulose bearing metal binding sites like Schiff base and carboxylic acid groups was synthesized and characterized through Fourier transform infrared and solid state 13C–nuclear magnetic resonance (NMR) analysis. The chemically modified cellulose (Cell-PA) adsorbent was examined for its metal ion uptake ability for Cu(II) and Pb(II) ions from aqueous solution. Kinetic and isotherm studies were carried out under optimum conditions. Pseudo-second-order kinetics and Langmuir isotherm fit well with the experimental data. Thermodynamic studies were also performed along with adsorption regeneration performance studies. The adsorbent (Cell-PA) shows high potential for the removal of Cu(II) and Pb(II) metal ions, and it shows antibacterial activity towards selected microorganisms.

scholarly journals Removal of copper(II) from aqueous solution using chemically modified fruit peels as efficient low-cost biosorbents

2021 ◽  
Author(s):  
Pongthipun Phuengphai ◽  
Thapanee Singjanusong ◽  
Napaporn Kheangkhun ◽  
Amnuay Wattanakornsiri
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Chemically Modified
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