A New Montmorillonite-Based Porous Composites: Effectively Removal of Cr(III)-Organic Complexes in Tannery Wastewater

2021 ◽  
Author(s):  
Xin Hao ◽  
Tao E ◽  
Shuyi Yang ◽  
Yun Li
Keyword(s):  
Tannery Wastewater ◽  
Organic Complexes ◽  
Porous Composites

scholarly journals Montmorillonite-Based Porous Composites as Adsorbents for Removal of Cr(III)-Organic Complexes in Tannery Wastewater

2021 ◽  
Author(s):  
Xin Hao ◽  
Tao E ◽  
Shuyi Yang ◽  
Yun Li
Keyword(s):  
Adsorption Mechanism ◽  
Molar Ratio ◽  
Organic Complex ◽  
Casting Method ◽  
Excellent Performance ◽  
Gel Casting ◽  
Organic Complexes ◽  
Porous Adsorbent ◽  
Porous Composites ◽  
Hollow Ball

Abstract Montmorillonite-based porous adsorbent prepared by gel casting method was used to adsorb Cr(III)-organic complexes in tanning wastewater with the initial concentration of 10 mg L−1. The as-porous adsorbent exhibited an excellent performance of separation. Meanwhile, its structural and morphology were characterized by TG, BET, XRD, SEM, EDS and XPS, showing that the porous adsorbent was complete hollow ball structure. And the adsorption results showed that the adsorption amount of porous adsorbent rapidly declined from 9.58 to 5.28, and only Cr(III) was adsorbed, when the molar ratio of Cr(III) and citrate was more than 1:5. Increased of pH was beneficial to the adsorption of Cr(III)-citrate in range from 2.46 to 7.12. Furthermore, the best removal efficiency of porous adsorbent for Cr(III)-organic complex used up to 97% and remaining above 84% after five cycles. Finally, the adsorption mechanism of Cr(III) on porous adsorbent is also provided. Therefore, a kind of easy separated porous adsorbent was prepared in this study so as to treat tanning wastewater containing Cr(III)-organic complex following alkali precipitation, as well as solving the problem of difficult recycle.

An Effective Use of Anodizing Mud for Treatment of Tannery Wastewater as a Coagulation Agent

2018 ◽  
Vol 8 (4) ◽  
Author(s):  
Niaz Ahmed Memon ◽  
Nisar Ahmed ◽  
Tooba haq ◽  
Sarwat Ismail ◽  
Uzma Rashid ◽  
...  
Keyword(s):  
Tannery Wastewater ◽  
Effective Use

REMOVAL OF ORGANIC MATERIALS FROM TANNERY WASTEWATER CONTAINING AMMONIA FOR REUSE USING ELECTRO-OXIDATION

2018 ◽  
Vol 17 (9) ◽  
pp. 2157-2164 ◽  
Author(s):  
Palanivel Saravanan ◽  
Sundaramoorthy Sundarapandiyan ◽  
Guntamadugu Bhaskar Raju ◽  
Bangaru Chandrasekaran
Keyword(s):  
Organic Materials ◽  
Tannery Wastewater ◽  
Electro Oxidation

CERAMIC MEMBRANE BASED MICROFILTRATION FOR TREATMENT OF HIGHLY CONTAMINATED TANNERY WASTEWATER

2015 ◽  
Vol 14 (9) ◽  
pp. 2139-2148 ◽  
Author(s):  
Sourja Ghosh ◽  
Priyankari Bhattacharya ◽  
Swachchha Majumdar ◽  
Somendra Nath Roy ◽  
Sibdas Bandyopadhyay
Keyword(s):  
Ceramic Membrane ◽  
Tannery Wastewater

Experimental Study on Bioprocess for Pig Tannery Wastewater Treatment*

2010 ◽  
Vol 16 (2) ◽  
pp. 285-288 ◽  
Author(s):  
Weibin TANG ◽  
Houzhen ZHOU ◽  
Zhouliang TAN ◽  
Xudong LI
Keyword(s):  
Experimental Study ◽  
Wastewater Treatment ◽  
Tannery Wastewater

scholarly journals Effective Chromium Adsorption From Aqueous Solutions and Tannery Wastewater Using Bimetallic Fe/Cu Nanoparticles: Response Surface Methodology and Artificial Neural Network

2021 ◽  
Vol 14 ◽  
pp. 117862212110281
Author(s):  
Ahmed S. Mahmoud ◽  
Nouran Y. Mohamed ◽  
Mohamed K. Mostafa ◽  
Mohamed S. Mahmoud
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Industrial Effluent ◽  
Oxygen Demand ◽  
Operating Conditions ◽  
Tannery Wastewater ◽  
P Value ◽  
Cu Nanoparticles ◽  
Artificial Neural ◽  
Cr Removal

Tannery industrial effluent is one of the most difficult wastewater types since it contains a huge concentration of organic, oil, and chrome (Cr). This study successfully prepared and applied bimetallic Fe/Cu nanoparticles (Fe/Cu NPs) for chrome removal. In the beginning, the Fe/Cu NPs was equilibrated by pure aqueous chrome solution at different operating conditions (lab scale), then the nanomaterial was applied in semi full scale. The operating conditions indicated that Fe/Cu NPs was able to adsorb 68% and 33% of Cr for initial concentrations of 1 and 9 mg/L, respectively. The removal occurred at pH 3 using 0.6 g/L Fe/Cu dose, stirring rate 200 r/min, contact time 20 min, and constant temperature 20 ± 2ºC. Adsorption isotherm proved that the Khan model is the most appropriate model for Cr removal using Fe/Cu NPs with the minimum error sum of 0.199. According to khan, the maximum uptakes was 20.5 mg/g Cr. Kinetic results proved that Pseudo Second Order mechanism with the least possible error of 0.098 indicated that the adsorption mechanism is chemisorption. Response surface methodology (RSM) equation was developed with a significant p-value = 0 to label the relations between Cr removal and different experimental parameters. Artificial neural networks (ANNs) were performed with a structure of 5-4-1 and the achieved results indicated that the effect of the dose is the most dominated variable for Cr removal. Application of Fe/Cu NPs in real tannery wastewater showed its ability to degrade and disinfect organic and biological contaminants in addition to chrome adsorption. The reduction in chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solids (TSS), total phosphorus (TP), total nitrogen (TN), Cr, hydrogen sulfide (H2S), and oil reached 61.5%, 49.5%, 44.8%, 100%, 38.9%, 96.3%, 88.7%, and 29.4%, respectively.

Fixed-bed adsorption of tannery wastewater pollutants using bottom ash: An optimized process

2021 ◽  
Vol 22 ◽  
pp. 100868
Author(s):  
Ghita El mouhri ◽  
Mohammed Merzouki ◽  
Rabie Kachkoul ◽  
Hajar Belhassan ◽  
Youssef Miyah ◽  
...  
Keyword(s):  
Fixed Bed ◽  
Bottom Ash ◽  
Tannery Wastewater ◽  
Fixed Bed Adsorption ◽  
Wastewater Pollutants

Removal of trivalent chromium from tannery wastewater using solid wastes

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
S. E. Abdelkader ◽  
A. S. El-Gendy ◽  
S. El-Haggar
Keyword(s):  
Trivalent Chromium ◽  
Solid Wastes ◽  
Tannery Wastewater
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