scholarly journals Removal of Heavy Metals from Tannery Wastewater by using Sawdust and Spent Tea Leaves as an Adsorbent

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Abu Sayid Mia
Keyword(s):  
Heavy Metals ◽  
Tannery Wastewater ◽  
Tea Leaves ◽  
Removal Of Heavy Metals ◽  
Spent Tea Leaves

scholarly journals Adsorption of chromium (Cr) from tannery wastewater using low-cost spent tea leaves adsorbent

2018 ◽  
Vol 8 (5) ◽  
Author(s):  
Md. Nur-E-Alam ◽  
Md. Abu Sayid Mia ◽  
Farid Ahmad ◽  
Md. Mafizur Rahman
Keyword(s):  
Low Cost ◽  
Tannery Wastewater ◽  
Tea Leaves ◽  
Spent Tea Leaves

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

scholarly journals Toxicity and Bioremediation of Heavy Metals Contaminated Ecosystem from Tannery Wastewater: A Review

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Bernard E. Igiri ◽  
Stanley I. R. Okoduwa ◽  
Grace O. Idoko ◽  
Ebere P. Akabuogu ◽  
Abraham O. Adeyi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Critical Evaluation ◽  
Cost Effective ◽  
Fold Increase ◽  
Genetically Engineered ◽  
Tannery Wastewater ◽  
Environmental Technology ◽  
Cost Effective Approach ◽  
Removal Of Heavy Metals ◽  
Near Future

The discharge of untreated tannery wastewater containing biotoxic substances of heavy metals in the ecosystem is one of the most important environmental and health challenges in our society. Hence, there is a growing need for the development of novel, efficient, eco-friendly, and cost-effective approach for the remediation of inorganic metals (Cr, Hg, Cd, and Pb) released into the environment and to safeguard the ecosystem. In this regard, recent advances in microbes-base heavy metal have propelled bioremediation as a prospective alternative to conventional techniques. Heavy metals are nonbiodegradable and could be toxic to microbes. Several microorganisms have evolved to develop detoxification mechanisms to counter the toxic effects of these inorganic metals. This present review offers a critical evaluation of bioremediation capacity of microorganisms, especially in the context of environmental protection. Furthermore, this article discussed the biosorption capacity with respect to the use of bacteria, fungi, biofilm, algae, genetically engineered microbes, and immobilized microbial cell for the removal of heavy metals. The use of biofilm has showed synergetic effects with many fold increase in the removal of heavy metals as sustainable environmental technology in the near future.

Biosorption: An Eco-Friendly Technique for the Removal of Heavy Metals

2011 ◽  
Vol 2 (3) ◽  
pp. 1-8 ◽  
Author(s):  
Sasmita Sabat ◽  
◽  
R V Kavitha R V Kavitha ◽  
Shantha S L Shantha S L ◽  
Gopika Nair ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Removal Of Heavy Metals

Study of the Cu(II) removal from aqueous solutions by adsorption on titania

2013 ◽  
Vol 12 (3) ◽  
pp. 239-247
Keyword(s):  
Heavy Metals ◽  
Ionic Strength ◽  
Toxic Metals ◽  
Low Cost ◽  
Lateral Interaction ◽  
Tio2 Surface ◽  
High Toxicity ◽  
Removal Of Heavy Metals ◽  
Solution Parameters ◽  
Kinetics Of

The removal of heavy metals from wastewaters is a matter of paramount importance due to the fact that their high toxicity causes major environmental pollution problems. One of the most efficient, applicable and low cost methods for the removal of toxic metals from aqueous solutions is that of their adsorption on an inorganic adsorbent. In order to achieve high efficiency, it is important to understand the influence of the solution parameters on the extent of the adsorption, as well as the kinetics of the adsorption. In the present work, the adsorption of Cu(II) species onto TiO2 surface was studied. It was found that the adsorption is a rapid process and it is not affected by the value of ionic strength. In addition, it was found that by increasing the pH, the adsorbed amount of Cu2+ ions and the value of the adsorption constant increase, whereas the value of the lateral interaction energy decreases.

Synergistic Effect of Rhamnolipid and Saponin Biosurfactants on Removal of Heavy Metals from Oil Contaminated Soils

2020 ◽  
Vol 57 (2) ◽  
pp. 109-114
Author(s):  
Amirhossein Dolatzadeh khiyavi ◽  
Reza Hajimohammadi ◽  
Hossein Amani ◽  
Hadi Soltani
Keyword(s):  
Heavy Metals ◽  
Synergistic Effect ◽  
Contaminated Soils ◽  
Removal Of Heavy Metals
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