Post treatment of tannery wastewater using lime/bittern coagulation and activated carbon adsorption

Ayoub, George M.; Hamzeh, Abeer; Semerjian, Lucy

doi:10.1016/j.desal.2011.01.045

Cited by 88 publications

(48 citation statements)

References 16 publications

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“…It was found that the increase in the efficiency of removal of organic compounds designated as COD increases with the increase in the amount of reactants added. However, it should be noted that 75% efficiency was obtained not only for the Fe 2+ dose of 0.56 g/dm 3 …”

Section: Fenton's Oxidation Processmentioning

confidence: 90%

“…The process of enhanced oxidation with Fenton reagent was carried out in 2 dm 3 For rapid distribution of the reactants, rapid stirring was carried out for 5 min followed by slow stirring for 30 min. For another 30 min.…”

Section: Fenton's Oxidation Processmentioning

confidence: 99%

“…COD values ranged from 2500 to 5620 mg O 2 / dm 3 In the first variant the study was conducted for a dose of Fe 2+ an amount of 0.45 g/dm 3 . Hydrogen peroxide was added in an amount of 2.21 g/dm 3 , 2.72 g/dm 3 and 3.23 g/dm 3 to assure the a Fe 2+ /H 2 O 2 ratio of 1:5, 1:6 and 1:7, respectively. The efficacy of the Fenton process as measured by the COD reduction for these doses was 69%, 72% and 75%, respectively (Fig.…”

Section: Fenton's Oxidation Processmentioning

confidence: 99%

“…For this reason, well-known wastewater treatment methods are constantly improved or new solutions are sought. In many cases, to achieve the required end results, several methods [Song 2001, Mandal et al 2010, Ayoub et al 2011 or treatment of separated waste streams need to be used. This allows for the pre-treatment of highly concentrated waste water, which especially applies to wastewater containing sulphides, chromium or organic compounds.…”

Section: Introductionmentioning

confidence: 99%

“…Chemistry of oxidation processes and the type of products produced are complex and depends mainly on the molar ratio of the reactants or the pH of the environment. It is also possible to remove sulphides in the process of catalytic oxidation with oxygen from the air in the presence of manganese, because in the sewage separated after the purification process a sulphide content of 2 to 10 mg S 2-/dm 3 is obtained, for a recommended amount of manganese from 100 to 200 mg/dm 3 [BAT, 2013]. Using this method for general sewage can reduce the con-centration of sulphides 3.5 times and additionally reduce the content of organic compounds by only 6-9% [Rameshraja et al 2011].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Alternative Treatment Strategy for Different Streams of Tannery Wastewater

Przywara

2017

J. Ecol. Eng.

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This article discusses the results of laboratory tests aimed to determine the effectiveness of tannery wastewater treatment in the process of enhanced oxidation using Fenton reagent. The general sewage from the tannery located in Mazowieckie Province was used for the research. The process was carried out using two doses of iron of 0.45 g Fe 2+ /dm 3 and 0.56 g Fe 2+ /dm 3 , and H 2 O 2 from 2.21 g/dm 3 to 4.08 g/dm 3 . All the tests were performed for a constant optimum pH of 3.0. Wastewater was characterized by basic physico-chemical indicators (pH, conductivity, COD, chromium, ammonium nitrogen). The efficiency of the process was determined mainly on the basis of changes in the organic pollutants identified as COD. The efficacy of the Fenton process for different doses of Fe 2+ and Fe 2+ /H 2 O 2 ratio of 1: 5, 1: 6 and 1: 7 was from 69 to 80% COD reduction in relation to raw sewage. Another aspect of the study was determining the possibility of removing sulphides from the wastewater by catalytic oxygenation with oxygen from air in the presence of manganese. In this case, the wastewater produced during leather manufacture in tanneries located in the southern part of Poland was examined. The subject of the study described in the paper was to determine the optimum manganese dose and oxidation time to simultaneously remove the sulphides and organic pollutants expressed as COD. The change in pollutant content in the wastewater over time indicates that the reduction of parameters takes place within one hour after the addition of manganese. Using the process of catalytic oxidation with 0.1 g/dm 3 to 0.6 g/dm 3 manganese and a reaction time of 1, 3, 24 h, the sulphides were removed in the range of 50 to 99% and organic compounds in 12 to 65%.

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Section: Fenton's Oxidation Processmentioning

confidence: 90%

Section: Fenton's Oxidation Processmentioning

confidence: 99%

Section: Fenton's Oxidation Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Alternative Treatment Strategy for Different Streams of Tannery Wastewater

Przywara

2017

J. Ecol. Eng.

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Opportunities for phycoremediation approach in tannery effluent: A treatment perspective

Saranya

Shanthakumar

2018

Env Prog and Sustain Energy

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Consumer demand for the leather products intensifies every year, especially in the fashion sector. With increasing pressure regarding chemicals, water usage, and landfill issues, the leather industries require ongoing research at production as well as effluent treatment level to ensure the stability of the industry. Industrialization made the outbreak of economic growth and energy demand with least consideration of environmental issues, especially in developing countries. Currently, microalgae have shown a significant promise in industrial effluent treatment. Further, the microalgal lipid accumulation potential has a substantial share in meeting the energy demand as renewable energy resource (e.g., Biofuel). Hence, microalgae assimilation of atmospheric CO2 and pollutants from the aqueous environment has overwhelming interest among researchers for combined treatment of industrial effluents and greenhouse gas mitigation from industrial emissions. This review focuses on identifying the potentials of integrating CO2 sequestration in tannery effluent treatment by microalgae. In addition, it summarizes the ability of microalgae for nutrient removal under flue gas environment and fuel production potential under stress condition. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13078, 2019

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Efficient treatment of tannery wastewater through aeration, coagulation, and algal pond

Afzaal,

Iqbal,

Abbasi

et al. 2023

Water Environment Research

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BackgroundTannery wastewater effluents contain many toxic and carcinogenic heavy metals and physiochemical parameters that need to be removed before these effluents enter in the main water bodies or rivers. In this study, the effluents from the tannery industry are treated through aeration, coagulation, and Chlorella vulgaris pond treatment processes for the removal of physiochemical: parameters only.MethodsThe effect of removal efficiencies (%) was studied on the physicochemical parameters, including salinity, electrical conductivity (EC), total dissolved solids (TDS), turbidity, total suspended solids (TSS), biochemical oxygen demand (BOD), and chemical oxygen demand (COD).ResultsThe key results showed that the removal of EC, TDS, turbidity, TSS, BOD, and COD was 80.2%, 67%, 81%, 80.8%, 68.6%, and 100%, respectively, in raw wastewater treatment having 25, 50, and 70 g of algae C. vulgaris doses. The removal efficiencies (%) of salinity, EC, TDS, turbidity, TSS, BOD, and COD were 83%, 87.1%, 77.1%, 80%, 40%, 97%, and 98%, respectively, during coagulated wastewater treatment with three doses of algae. The observed improvement in treated wastewater indicated that the removal efficiencies (%) of salinity, EC, TDS, turbidity, TSS, BOD, and COD were 85.7%, 39.3%, 81.3%, 67.8%, 50.3%, 97%, and 98%, with C. vulgaris.ConclusionThis study confirmed that the treatment of tannery wastewater by these processes increased the pollutant removal efficiencies as all the physiochemical parameters were exceeding the permissible limits.Results contribution in futureThis research will be helpful to treat the industrial wastewaters or effluents before it further mixes up in the main water streams. In this way, water quality will be better, aquatic life will be saved, and further researchers can analyze more ways for efficient treatments as they have a baseline data through this study findings.Practitioner Points One of the most pollutant sources in terms of both physical and chemical parameters is the produced wastewater from tannery industries. The effluents from tannery industry are treated through aeration, coagulation, and algae ponds treatment processes. These treatment made the tannery wastewater as environmental friendly.

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Post treatment of tannery wastewater using lime/bittern coagulation and activated carbon adsorption

Cited by 88 publications

References 16 publications

Alternative Treatment Strategy for Different Streams of Tannery Wastewater

Alternative Treatment Strategy for Different Streams of Tannery Wastewater

Opportunities for phycoremediation approach in tannery effluent: A treatment perspective

Efficient treatment of tannery wastewater through aeration, coagulation, and algal pond

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