scholarly journals Immobilized Thiosalicylic Ligand System Potentials for the Detoxification of Some Heavy Metals from Tannery Wastewater

2021 ◽  
Vol 9 (3) ◽  
pp. 72
Author(s):  
Bulus Habila ◽  
Emmanuel Chidiebere Ezeh ◽  
Simon Moses Saidu ◽  
John Chidozie Attah ◽  
Paul Okechukwu Nsude ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Tannery Wastewater ◽  
Ligand System

CHAPTER 12. Heavy Metals in Tannery Wastewater and Sludge: Environmental Concerns and Future Challenges

2014 ◽  
pp. 249-260 ◽  
Author(s):  
Giusy Lofrano ◽  
Maurizio Carotenuto ◽  
Ravindra Kumar Gautam ◽  
Mahesh Chandra Chattopadhyaya
Keyword(s):  
Heavy Metals ◽  
Tannery Wastewater ◽  
Environmental Concerns ◽  
Future Challenges

scholarly journals Synthesis, Characterization of Immobilized Thiosalicylic-Mercaptoethanol Bi-Ligand System and Its Application in Detoxification of Chromium III and Iron III Ions from Tannery Wastewater

2019 ◽  
Author(s):  
Bulus Habila ◽  
Pius Onyeoziri Ukoha ◽  
Stanley I.R. Okoduwa ◽  
Ahmed Salim ◽  
Muazu B. Babangida ◽  
...  
Keyword(s):  
Metal Ion ◽  
Microwave Plasma ◽  
Binding Capacity ◽  
Atomic Emission ◽  
Tannery Wastewater ◽  
Competitive Sorption ◽  
Metal Ion Binding ◽  
Ligand System ◽  
Endothermic Reactions ◽  
High Degree

<div>Background: Effective wastewater treatments are paramount to modern-day Scientists. The available methods are ineffective in detoxifying tannery wastewater. </div><div>Aim: This study synthesize and characterized polysiloxane-Immobilized thiosalicylic-mercaptoethanol ligand system (PITSMCBLS) and used in detoxification of Cr3+ and Fe3+ from tannery wastewater.</div><div>Method: Porous solid PITSMCBLS was prepared by hydrolytic polycondensation of tetraethylorthosilicate with mixture of 3-chloropropyltrimethoxysilane, methanol and sodium hydroxide as catalyst. The gelation formed (3-CPP) after 40 min, was functionalized (F-3CPP) with excess ethylchloroacetate, triethylamine and grafted with thiosalicylic-mercaptoethanol bi-ligand. The PITSMCBLS was characterized using FTIR and SEM-EDX. The competitive sorption characteristics of metal ions (Cr3+ and Fe3+) were studied using Microwave Plasma Atomic-Emission Spectrophotometer.</div><div>Result: The FTIR spectrum of PITSMCBLS showed vibrational frequencies (cm-1) at: 3339, (O-H); 2928, (C-H); 2685, (SH); 2497, (Si-H); 1587–1707, (C=O) and 1028, (Si-O). The SEM-EDX showed irregular particle sizes (4.4294 ± 1.7187 nm) and elemental composition (wt %): 3-CPP, Si (50.45); O (25.02) and Cl (24.57). The F-3CPP showed, O (58.68) and Si (41.32), while PITSMCBLS showed 11.94 of S. Gibbs free energy yielded negative range values for ΔGo (Cr3+ -14.187 to -14.832 and Fe3+ - 14.369 to -14.843 kJmol-1), positive values for: ΔHo (Cr3+ 5.345 and Fe3+ 0.000 kJmol-1) and ΔSo (Cr3+ 64.459 and Fe3+ 47.421 Jmol1K1) respectively.</div><div>Conclusion: PITSMCBLS exhibits high potential for extraction of Cr3+ and Fe3+ in tannery wastewater. The Thermodynamic values indicate spontaneous, endothermic reactions and high degree of disorderliness with respect to metal ion binding capacity to the ligand system. This development would improve tannery wastewater treatment.</div>

scholarly journals Synthesis, Characterization of Immobilized Thiosalicylic-Mercaptoethanol Bi-Ligand System and its Application in Detoxification of Chromium III and Iron III ions from Tannery Wastewater

2019 ◽  
Author(s):  
Bulus Habila ◽  
Pius Onyeoziri Ukoha ◽  
Stanley I.R. Okoduwa ◽  
Ahmed Salim ◽  
Muazu B. Babangida ◽  
...  
Keyword(s):  
Metal Ion ◽  
Microwave Plasma ◽  
Binding Capacity ◽  
Atomic Emission ◽  
Tannery Wastewater ◽  
Competitive Sorption ◽  
Metal Ion Binding ◽  
Ligand System ◽  
Endothermic Reactions ◽  
High Degree

<div>Background: Effective wastewater treatments are paramount to modern-day Scientists. The available methods are ineffective in detoxifying tannery wastewater. </div><div>Aim: This study synthesize and characterized polysiloxane-Immobilized thiosalicylic-mercaptoethanol ligand system (PITSMCBLS) and used in detoxification of Cr3+ and Fe3+ from tannery wastewater.</div><div>Method: Porous solid PITSMCBLS was prepared by hydrolytic polycondensation of tetraethylorthosilicate with mixture of 3-chloropropyltrimethoxysilane, methanol and sodium hydroxide as catalyst. The gelation formed (3-CPP) after 40 min, was functionalized (F-3CPP) with excess ethylchloroacetate, triethylamine and grafted with thiosalicylic-mercaptoethanol bi-ligand. The PITSMCBLS was characterized using FTIR and SEM-EDX. The competitive sorption characteristics of metal ions (Cr3+ and Fe3+) were studied using Microwave Plasma Atomic-Emission Spectrophotometer.</div><div>Result: The FTIR spectrum of PITSMCBLS showed vibrational frequencies (cm-1) at: 3339, (O-H); 2928, (C-H); 2685, (SH); 2497, (Si-H); 1587–1707, (C=O) and 1028, (Si-O). The SEM-EDX showed irregular particle sizes (4.4294 ± 1.7187 nm) and elemental composition (wt %): 3-CPP, Si (50.45); O (25.02) and Cl (24.57). The F-3CPP showed, O (58.68) and Si (41.32), while PITSMCBLS showed 11.94 of S. Gibbs free energy yielded negative range values for ΔGo (Cr3+ -14.187 to -14.832 and Fe3+ - 14.369 to -14.843 kJmol-1), positive values for: ΔHo (Cr3+ 5.345 and Fe3+ 0.000 kJmol-1) and ΔSo (Cr3+ 64.459 and Fe3+ 47.421 Jmol1K1) respectively.</div><div>Conclusion: PITSMCBLS exhibits high potential for extraction of Cr3+ and Fe3+ in tannery wastewater. The Thermodynamic values indicate spontaneous, endothermic reactions and high degree of disorderliness with respect to metal ion binding capacity to the ligand system. This development would improve tannery wastewater treatment.</div>

scholarly journals Characterization of tannery wastewater and its treatment by aquatic macrophytes and algae

2015 ◽  
Vol 49 (4) ◽  
pp. 233-242 ◽  
Author(s):  
MAA Jahan ◽  
N Akhtar ◽  
NMS Khan ◽  
CK Roy ◽  
R Islam ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Aquatic Plants ◽  
Biological Treatment ◽  
Oxygen Demand ◽  
Tannery Wastewater ◽  
Toxic Substances ◽  
Physiochemical Parameters ◽  
Combination Treatments ◽  
Removal Of Heavy Metals ◽  
Total Dissolved Solid

Tannery wastewater contains large amount of chemical compounds including toxic substances. So an attempt was made to characterize physiochemical parameters of tannery wastewater and investigate the efficacy, and applicability of the biological treatment utilizing aquatic plants macrophytes and algae. Total suspended solids TSS and total Dissolved solid in the original wastewater were found 1250 mg/l and 21300 mg/l respectively. The pH and temperature were 8.3 and 29°C. Dissolved Oxygen (DO), Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) were 2.72 mg/l, 4464 mg/l and 12840 mg/l respectively. Electrical conductivity (EC) was 42500 ?S/cm anions PO43- and Cl- were 17.1 mg/l and 13.8 mg/l respectively. Heavy metals were also analysed. Fe, Na, Zn, Cr, Pb and Ca were found 14.675 mg/l, 12006 mg/l, 1.5241 mg/l, 10.348 mg/l, 0.1818 mg/l and 0.4112 mg/l respectively. Biological treatment with aquatic plants, algae and their combination treatments were found to be effective for the reduction of some physiochemical parameters. Treatment conducted with Eichhornia crassipes was found most effective in reducing COD, EC, TDS and TSS. Mixed treatment resulted reduction of pH from 8.3 to 6.21. Both macrophytes and algae exhibited good heavy metal uptake tendency, but Eichhornia crassips was identified as most effective for the removal of heavy metals in the wastewater because of its extensive root system which provides to help the uptake of pollutants from the wastewater. DOI: http://dx.doi.org/10.3329/bjsir.v49i4.22626 Bangladesh J. Sci. Ind. Res. 49(4), 233-242, 2014

scholarly journals Application of Moringa Oleifera Seed Extract (Mose) in the Removal of Heavy Metals from Tannery Wastewater

2020 ◽  
Vol 17 (2) ◽  
pp. 70-78
Author(s):  
M.A. Tanko ◽  
B.Y. Sanda ◽  
M.H. Bichi
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Moringa Oleifera ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Research Work ◽  
Seed Extract ◽  
Tannery Wastewater ◽  
Removal Of Heavy Metals ◽  
Moringa Oleifera Seed

The main focus of this research work is to investigate the possibility of applying Moringa oleifera seed extract for the removal of heavy metals from tannery wastewater. Samples were collected from effluent discharge points of the GB tannery, Muhaza tannery and Z-tannery which are located in Challawa Industrial Area, Kano, Nigeria. The samples analyzed for physico-chemical parameters are pH, temperature, hardness, conductivity, turbidity, alkalinity, total suspended solid, total dissolved solid, calcium, magnesium, chloride, nitrates, sulphates and sulphide and heavy metals such as cadmium, chromium, copper, cobbalt, iron, lead, manganese and zinc. The results show that the final levels of heavy metals after the application of Moringa Oliefera seed extracts were within NESREA acceptable limits. The heavy metal removal efficiencies were as follows; 99.29% for cadmium, chromium and iron while 96.03%, 95.56%, 96.84%, 87.41%, 91.35% for copper, cobalt, lead, manganese and zinc, respectively. The cheap, easy and environmentally friendly material called Moringa oleifera could be recommended to tannery companies for effective removal of heavy metals so as to have a safe, non-polluting environment and also prevent endangering the lives of aquatic organisms andHUMANS Keywords: Moringa Oleifera, tannery, wastewater, heavy metal, wastewater

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