scholarly journals Effects of Moringa oleifera Lam. and Azadirachta indica A. Juss. leaf extract in treatment of tannery effluent

Our Nature ◽  
2017 ◽  
Vol 14 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Sankar Narayan Sinha ◽  
Dipak Paul ◽  
Karabi Biswas
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Azadirachta Indica ◽  
Leaf Extract ◽  
Moringa Oleifera ◽  
Waste Water Treatment ◽  
Tannery Effluent ◽  
Leaf Extracts ◽  
Tannery Waste ◽  
Tannery Waste Water

The effect of leaf extracts of Moringa oleifera and Azadirachta indica using ethanol as solvent on tannery waste water treatment was investigated for a period of five days and their phytochemical constituents were analyzed. All the extracts were found to be efficient in the clarification and sedimentation of total solids in the tannery waste water sample. On the 5th day, sample treated with 10 ml of extract showed higher reduction of electrical conductivity, pH, chloride, sulfate along with dissolved oxygen. The significant reduction of these pollution indicating parameters of the tannery effluent indicated its high applicability to treat the tannery wastes along with other waste water treatment in near future. This is the first report of decontamination of tannery waste water by Azadirachta indica leaf extract. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. 

scholarly journals Tannery Waste Water Treatment through Aggregation of Bio-sorption and Chemical Coagulation Aided by Indigenous Coagulant

2018 ◽  
Vol 8 (04) ◽  
Author(s):  
Subrata Paul ◽  
Thuhin Kumar Dey ◽  
Rajan Kumar Raha
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Toxic Waste ◽  
Pollution Load ◽  
Leather Industry ◽  
Chemical Coagulation ◽  
Natural Coagulant ◽  
Tannery Waste ◽  
Tannery Waste Water

Tannery in Bangladesh seems a source of pollution load and waste water to all because there are 270 registered tanneries where approximately 220 MT raw hides and skins are taking for the production of leather in Bangladesh. The leather industry has crossed the record $1-billion mark in exports in 2013-2014. According to the Department of Environment, the tanneries discharge 22,000 cubic meters of untreated liquid toxic waste daily. These pollution load and waste water should need treatment to make environmentally sustainable and living. From this point of view, we worked on tannery waste water processing. The paper highlights the initiation of Algal treatment with chemical coagulation process aided by natural coagulant for waste water processing in Bangladesh. The methodology of this process starts with mixing of waste water from different section of beam house operations at a definite ratio. The mixer takes nearly six hours to settle down. After sedimentation, the turbidity decreases at a reasonable amount i.e. 1428 NTU whereas before sedimentation it was 9050 NTU (2100P Turbid Meter of HACH). Later the supernatant was collected for algal treatment. After algal treatment the turbidity reduced to 530 NTU from 1428 NTU and the DO level increased up to 4.48 mg/L at 33.6 °C (HQ 40d of HACH) where DO level was 0.24 mg/L at 33.6°C in raw mixer. In addition, the amount of alum as chemical coagulant was reduced in tannery waste water treatment by using indigenous snail shell powder as coagulant aid in conjunction with alum. In case of untreated sample after sedimentation required alum dozing was 6 mL/ 40 mL sample. After algal treatment, required alum dozing reduced to 4 mL/ 40 mL sample. By adding 3 mL/ 40mL liquid natural coagulant as coagulant aid, alum dozing was further minimized to 1 mL/ 40mL sample. The odour was more tolerable than raw mixer after algal treatment but after adding alum aided by natural coagulant, the odour was more acceptable than before. The diversified technique can hopefully reduce a reliable chemical cost in treatment process, considerable amount of pollution load and increase DO level and thus make effluent environment friendly to discharge. Finally, the DO level increases up to 6.56 mg/L at 33.7 0C and turbidity reduces to 183 NTU, pH reduces to 7.6, odour turns to be tolerable limit.

scholarly journals A Cost-Efficient Charcoal-Based Adsorbent for Waste Water Treatment and Dye Removal

2019 ◽  
Vol 9 (1S4) ◽  
pp. 759-765
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Manihot Esculenta ◽  
Moringa Oleifera ◽  
Carica Papaya ◽  
Dye Removal ◽  
Waste Water Treatment ◽  
Kinetic Studies ◽  
Three Samples ◽  
Cost Efficient

Activated charcoal derived from Moringa oleifera, Manihot esculanta, Carica papaya are efficient for waste water treatment and dye removal. Adsorption techniques are used to remove the non-bio degradable pollutants. The produced carbon was exemplified using Scanning Electron Microscopy and Fourier Infrared spectroscopy. The discoloration rate was higher at an optimum pH of 5 for all three samples and at an adsorbent dosage of 0.02g/100ml of effluent and the equilibrium was obtained in 10 minutes. Thus, the adsorbents have the prospective for realistic applications. Adsorption isotherms was evaluated by the Freundlich, Langmuir isotherms and higher linear attenuation coefficients showed that the experimental data shows a better fit to Freundlich model (R2 = 0.9987) for Manihot esculenta, Langmuir model for Carica papaya and Moringa oleifera (R2 = 0.9931) (R2 = 0.9959). Kinetic studies were also executed for all the adsorbents and for Manihot esculenta data en suite well to pseudo-second order model (R2 = 0.9966), for Carica papaya (R2 = 0.9986) and for Moringa oleifera investigational data en suite well with Pseudo-first order (R2 = 0.9916) respectively.

Cellulose based electrospun nanofilters: perspectives on tannery effluent waste water treatment

Cellulose ◽  
2022 ◽  
Author(s):  
Senthil Rethinam ◽  
Serdar Batıkan Kavukcu ◽  
Thiagarajan Hemalatha ◽  
A. Wilson Aruni ◽  
Aylin Sendemir ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Tannery Effluent ◽  
Effluent Waste

Performance and Efficiency of Azadirachta Indica, Guazuma Ulmifolia and Dolichos Lablab in Municipal Waste Diagnosis Process

2021 ◽  
Vol 9 (VI) ◽  
pp. 2460-2464
Author(s):  
G. Sivakumar
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Azadirachta Indica ◽  
Waste Water Treatment ◽  
Water Extract ◽  
Quality Parameters ◽  
Municipal Waste ◽  
Natural Coagulant ◽  
Dolichos Lablab ◽  
Guazuma Ulmifolia

The experiment was carried out at various dosages of the crude water extract by natural dry seeds. Using a jar test experiment, the experiment was carried out at various dosages of the crude water extract by dry seeds of Azadirachta indica, Guazuma ulmifolia, and Dolichos lablab. The optimum dosage of the coagulant was determined. Quality parameters of the waste waters were measured before and after treatment to assess the removal efficiency of major pollutants of concern in waste water treatment, such as suspended solids, COD, BOD, pH, TDS, Sulphates, and Chlorides. Azadirachta indica was found to be the most suitable natural coagulant for municipal waste water treatment when compared to Guazuma ulmifolia and Dolichos lablab. The use of a locally available natural coagulant for water treatment was found to be suitable, easier, cost effective, and environmentally friendly.

scholarly journals Continuous photocatalytic setup assisted with nano TiO2 plate for tannery waste water treatment

2021 ◽  
Author(s):  
Reza Shahbazi ◽  
Mona Zamani Pedram
Keyword(s):  
Waste Water ◽  
Uv Light ◽  
Inorganic Compounds ◽  
Waste Water Treatment ◽  
Oxygen Demand ◽  
Continuous System ◽  
Continuous Treatment ◽  
Tannery Waste ◽  
Tannery Waste Water ◽  
Set Up

Abstract Novel photocatalytic continuous system for treatment of the tannery waste water has been proposed regarding to the concerns about their high environmental problems. The purification process was performed by passing wastewater on the TiO2-coated surface that continuously activated by irradiation of the UV-light. Moreover, in order to improve the yield of the process, FeCl3 was used as coagulation agent. The organic and inorganic compounds, as well as the microorganisms in the tannery waste water media have been degraded through photocatalytic process. The results revealed that total dissolved solids and total suspended solids contents were significantly decreased from 8,450 and 8,990 mg·L−1 to 4,032 and 4,127 mg·L−1, respectively. Furthermore, the chemical oxygen demand content of the sample was reduced from 370 to 50 mg·L−1 after addition of 100 mL FeCl3 and 4 h of treatment. The same results were observed for elimination of the sulfate and chromium ions that led to decline of the sample electrical conductivity. As a consequence, introducing 100 ml of FeCl3 as coagulation agent and continuous treatment with photocatalityc set-up could be remarked as an effective method for purification of the tannery wastewaters.

scholarly journals Comparison of the Effect of Moringa Extract and Powder on Coliform and BOD Variation with Time

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Mathew I Aho ◽  
Jonah C Agunwamba
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Samples ◽  
Moringa Oleifera ◽  
Waste Water Treatment ◽  
Poor Performance ◽  
Particle Sizes ◽  
Test Analysis ◽  
Jar Test ◽  
Better Than

The study investigated the use of moringa extract and powder on coliform and BOD variation with time. Jar test analysis revealed optimum dosages that were used in the experimentation. Raw and waste water samples were treated separately with the extract and powder at detention periods of 1, 24, 48 and 72 hours respectively. Coliform and BOD values of the water samples which were either flocculated or not were measured. The results revealed that, raw water coliform in excess of 1700cfu/ml and BOD of 78mg/L were reduced to 540cfu/ml and 60mg/L after 72 hours of using moringa extract in the treatment. But the same treatment using particle sizes of the powder indicated poor performance, especially in waste water treatment. The study reveals that moringa oleifera extract is comparatively better than powder in raw and waste water treatment.                                                         Key words - Comparison, moringa extract, powder treatment

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