Lead removal from synthetic wastewater by biosorbents prepared from seeds of Artocarpus Heterophyllus and Syzygium Cumini

Chemosphere ◽  
2022 ◽  
Vol 287 ◽  
pp. 132016
Author(s):  
Deen Dayal Giri ◽  
Alaa Alhazmi ◽  
Akbar Mohammad ◽  
Shafiul Haque ◽  
Neha Srivastava ◽  
...  
Keyword(s):  
Synthetic Wastewater ◽  
Lead Removal ◽  
Syzygium Cumini ◽  
Artocarpus Heterophyllus

scholarly journals Green synthesis of TiO2 nanoparticles from Syzygium cumini extract for photo-catalytic removal of lead (Pb) in explosive industrial wastewater

2020 ◽  
Vol 9 (1) ◽  
pp. 171-181 ◽  
Author(s):  
Naresh Kumar Sethy ◽  
Zeenat Arif ◽  
Pradeep Kumar Mishra ◽  
Pradeep Kumar
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Green Synthesis ◽  
Industrial Wastewater ◽  
Anatase Phase ◽  
Bet Surface Area ◽  
Lead Removal ◽  
Syzygium Cumini ◽  
X Ray ◽  
Catalytic Removal

AbstractGreen synthesis is a simple, non-toxic, economical and eco-friendly approach for the synthesis of nanoparticles. In the present work, nanoparticles of titanium dioxide (TiO2 NPs) were synthesized using an aqueous solution of Syzygium cumini leaf extract as a capping agent. These green synthesized TiO2 NPs were further evaluated for photo catalytic removal of lead from industrial wastewater. Obtained nanoparticles were characterized using: high-resolution scanning electron microscopy (HRSEM), high-resolution transmission electron microscopy (HRTEM), X-ray energy dispersive spectroscopy (EDS), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), dynamic light scattering (DLS) and Brunauer-Emmett-Teller (BET). Obtained results revealed that synthesized TiO2 NPs possess spherical morphology with anatase phase with a large BET surface area of 105 m2/g. Photo catalytic studies of TiO2 NPs for lead removal from explosive wastewater were performed in a self-designed reactor. Inductive coupled plasma spectroscopy (ICP) was used to determine the lead concentration. Obtained results witnessed 75.5% removal in chemical oxygen demand (COD) and 82.53% removal in lead (Pb2+). This application of green TiO2 NPs is being explored for the first time.

Application of a bio-electrochemical reactor process to direct treatment of metal pickling wastewater containing heavy metals and high strength nitrate

2004 ◽  
Vol 50 (8) ◽  
pp. 111-118 ◽  
Author(s):  
T. Watanabe ◽  
H.W. Jin ◽  
K.J. Cho ◽  
M. Kuroda
Keyword(s):  
Heavy Metals ◽  
Electric Current ◽  
Ph Value ◽  
Electrochemical Reactor ◽  
Hydrogen Gas ◽  
Operating Conditions ◽  
Synthetic Wastewater ◽  
Carbon Anode ◽  
Lead Removal ◽  
Direct Treatment

The fundamental performance of a bio-electrochemical reactor for the direct treatment of metal ickling wastewater was investigated experimentally. In the reactor, carbon anode and cathode were installed. On the cathode, denitrifying microorganisms were immobilized. Continuous experiments were carried out by feeding a synthetic wastewater containing nitrate and binary heavy metal ions, copper and lead, under different operating conditions. Acetate as well as the electric current was supplied at the minimum amount for stoichiometry of the dissimilatory denitrification reaction. The results indicated that the dissolved copper and lead removal, denitrification and neutralization could be achieved simultaneously in a single bio-electrochemical reactor. The dissolved heavy metals were removed by electrochemical deposition on cathode and by the other phenomena such as the formation of insoluble suspensions and the sorption on suspended bacterial sludge. Denitrification proceeded effectively with the utilization of both added acetate and hydrogen gas generated by electrolysis of water. The pH value increased up to around neutral due to the occurrence of denitrification in the reactor, although the influent pH was less than 3. The removal efficiencies of heavy metals and nitrate increased with increasing the current density. The applied electric current was indispensable for sustaining the stable treatment in the reactor.

scholarly journals Thermodynamic Studies of The Removal of Lead From Synthetic Wastewater Using Cyperus Rotundus

2019 ◽  
Vol 35 (5) ◽  
pp. 1529-1534
Author(s):  
Davoud Balarak ◽  
Hadise Mardanshahi ◽  
Kethineni Chandrika ◽  
C.S. Felice
Keyword(s):  
Contact Time ◽  
Mixing Time ◽  
Cyperus Rotundus ◽  
Synthetic Wastewater ◽  
Lead Removal ◽  
Batch System ◽  
Optimum Ph ◽  
Pseudo Second Order ◽  
Time Lead ◽  
Adsorbent Particle

This research wasaccomplished to appraise the performance of Cyperus Rotundus Stalk (CRS) in adsorption of lead heavy metalofaquatic environments. For this purpose, the batch system was used for review the effect pH, Mixing time, adsorbent particle size and temperature for Pb(II) removal on the CRS. The highest lead removal efficacy was achieved in pH=6 and it was considered as the optimum pH. The result indicated the maximum Pb(II) adsorption at the contact time of 90 min which implies that increase in contact time lead to a higher lead uptake.The amount of R2using the pseudo-second-order are greater than compare with others models.Influence of temperature was determined byusing thermodynamic parameters and the results showedremoval of lead on the CRS was endothermic, spontaneousandfeasible.

in vivo anthelmintic activity of Syzygium cumini leaves against Haemonchus contortus in sheep

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
LDR Oliveira ◽  
JPHV Miranda ◽  
GS Curado ◽  
JP Costa Neto ◽  
BF Santos ◽  
...  
Keyword(s):  
Haemonchus Contortus ◽  
Anthelmintic Activity ◽  
Syzygium Cumini

Use of Syzygium cumini (L.) ethanol extract against bacteria from bovine mastitis

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
AL Magalães ◽  
N Gabriel ◽  
L Rabelo ◽  
I Maciel ◽  
L Silva ◽  
...  
Keyword(s):  
Bovine Mastitis ◽  
Ethanol Extract ◽  
Syzygium Cumini
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