Investigation on pulsed-electrocoagulation process for the treatment of wet coffee processing wastewater using an aluminum electrode

Asefaw, Kassahun Tadesse; Bidira, Firomsa; Desta, Wendesen Mekonin; Asaithambi, Perumal

doi:10.1016/j.scenv.2024.100085

Cited by 2 publications

(2 citation statements)

References 47 publications

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“…Since metal hydroxide flocs are less stable and dissolve substantially into the solution at a pH of about 7, the best removal effectiveness was achieved during the bio coagulant assisted electrocoagulation process [25] Figure 2 Effect of pH on % removal efficiency by bio-coagulant assisted electrocoagulation…”

Section: Effect Of Phmentioning

confidence: 99%

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Indigenous bio-coagulant assisted electrocoagulation process for the removal of pollutants from brewery wastewater : optimization by using Response Surface Methodology (RSM)

Garomsa,

Mehari,

Desta

et al. 2024

Preprint

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Industrial wastewaters present a challenge with conventional treatments because of their low biodegradability and high levels of organic matter. Wastewater from human activities, particularly from brewery industries, is a significant source of pollution. A substantial amount of effluent is used during the brewing process and discharged into the environment. Large volumes of both biodegradable and non-biodegradable substances found in brewery effluent make them suitable for the natural coagulant-assisted electrocoagulation process. The treatment options available today are highly harmful and not economical. To solve this problem and provide a simple method of treating brewery wastewater, the Bio coagulant assisted electrocoagulation process was created. The performance of bio-coagulant-assisted electrocoagulation was studied, considering parameters such as pH, time, current, and bio-coagulant dosage. The bio-coagulant-assisted electrocoagulation process removed COD (99.01%), BOD (99.09%), TDS (99.02%), and) at an ideal pH of 7, a current of 0.5 Ampere, a time of 40 minutes, and power consumed (0.54kwh/m3 with a constant dose of 0.75 g/l Nacl as electrolytes. The results also showed that indigenous bio-coagulant-assisted electrocoagulation processes was effective and uses less power in removing pollutants from brewery wastewater. Furthermore, the bio-coagulant-assisted electrocoagulation parameters employed by the study were statistically customized by using Response Surface Methodology (RSM). The value of a dependent variable is identified by regression analysis with a design expert (RSM) using the specified values of the independent variables.

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Section: Effect Of Phmentioning

confidence: 99%

“…The contaminant and electrode may be unable to make contact because of these gas bubbles, which would reduce the removal efficiency overall. Additionally, the formation of gas bubbles can cause electrode erosion, which may lead to the separation of electrode materials and potential fouling of the system [25] 0.3 0.8…”

Section: Effect Of Currentmentioning

confidence: 99%

Indigenous bio-coagulant assisted electrocoagulation process for the removal of pollutants from brewery wastewater : optimization by using Response Surface Methodology (RSM)

Garomsa,

Mehari,

Desta

et al. 2024

Preprint

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A Comprehensive Bibliometric Study in the Context of Chemical Hazards in Coffee

Guadalupe,

Grandez-Yoplac,

García

et al. 2024

Toxics

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The research aimed to carefully review the chemical hazards linked to the coffee production chain to analyse the risks and opportunities for consumers and the environment, as well as identify potential knowledge gaps. The Scopus database was consulted from 1949 to April 2024 to conduct a bibliometric analysis. As a result, 680 articles were analysed. Results indicated a significant increase in research activity since 2015. China, Brazil, and the USA were the leading countries in scientific production and collaborations. The most prolific journals in this field were Chemosphere, Science of the Total Environment, Food Chemistry, Journal of Agricultural and Food Chemistry, and Journal of Environmental Management, all of which are in the first quartile. The word analysis revealed two main themes: the first focuses on the chemical hazards of coffee and their impact on health, while the second explores the waste generated during coffee production and its potential for reuse. The topics covered in the research include the composition of coffee, associated chemical hazards, possible health risks, and ways to reuse waste for environmental protection. Future research should concentrate on optimising techniques and processes to ensure quality, safety, and sustainability.

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Investigation on pulsed-electrocoagulation process for the treatment of wet coffee processing wastewater using an aluminum electrode

Cited by 2 publications

References 47 publications

Indigenous bio-coagulant assisted electrocoagulation process for the removal of pollutants from brewery wastewater : optimization by using Response Surface Methodology (RSM)

Indigenous bio-coagulant assisted electrocoagulation process for the removal of pollutants from brewery wastewater : optimization by using Response Surface Methodology (RSM)

A Comprehensive Bibliometric Study in the Context of Chemical Hazards in Coffee

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