New sustainable perspectives for “Coffee Wastewater” and other by-products: A critical review

Campos, Renata Cássia; Pinto, Vinícius Rodrigues Arruda; Melo, Laura Fernandes; Rocha, Samuel José Silva Soares da; Coimbra, Jane Sélia dos Reis

doi:10.1016/j.fufo.2021.100058

Cited by 45 publications

(37 citation statements)

References 43 publications

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“…In the case of microbial fuel cells, these wastewaters are used as feedstock in the anode chamber so that microorganisms from native communities can degrade and transform organic matter through anaerobic processes of oxidation (Romero et al, 2012;Lovley, 1991). The wastewater from the coffee agroindustry contains Mg, Na, Ca, Zn, Cu, Fe, and other trace elements and co-factors essential for the growth and evolution of electrogenic microorganisms such as the reference electrogenic species Geobacter sulfurreducens (Lin et al, 2004;Romero et al, 2012;Echeverria and Nuti, 2017;Campos et al, 2021). Using native microbial communities ensures the metabolic adaptation of these microorganisms to the nutritional and environmental conditions of the wastewater, to degrade organic matter and to co-generate electricity (Logrono et al, 2015;Varanasi et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…In most coffee-producing countries, the primary production of "washed soft coffees" involves the use of the traditional wet processing method, resulting in large amounts of wastewater with high organic-content. This causes a severe negative environmental impact in the ecosystem of coffee farming areas, due to the large amount of lixiviates, drainage of pulp, and mucilage disposed onto the environment without treatment (Dankowska et al, 2017;Campos et al, 2021). These coffee wastes have a deleterious effect on the hydrographic basins around the coffee farms, resulting in severe contamination of soil and aquatic ecosystems as well as causing an increase in the transmission of waterborne illnesses (Didanna, 2014;Rodriguez et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…BES technology is suitable in this case due to the high organic content in coffee waste and the possibility of bio-prospection of coffee-associated microbial communities. Chemical Oxygen Demand (COD) values between 13.0 and 29.5 g/L in coffee wastewater have been reported (Said et al, 2020;Campos et al, 2021), indicative of the need for efficient treatment processes. Leveraging and adding value to the coffee agroindustrial waste has a high impact from the environmental, social, and economic points of view.…”

Section: Introductionmentioning

confidence: 99%

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A Bioelectrochemical System for Waste Degradation and Energy Recovery From Industrial Coffee Wastewater

2022

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The primary production of coffee involves the extensive use of water resources, since it is not only used for irrigation of coffee plantations, but it is also required in large volumes for the processing of the coffee berry to obtain high quality green beans. It is calculated that for every kg of dry coffee grain produced, up to 40 L of water are consumed, and its disposal represents a significant environmental problem, since most coffee growers are small producers with no access to efficient technologies for wastewater treatment. This situation leads to these liquid wastes to be discarded untreated in natural water sources, generating environmental pollution and public health problems. Bioelectrochemical Systems (BES) have been proposed as an alternative to conventional wastewater treatments, either as a primary bioremediation strategy or for secondary wastewater treatment systems. Among BES, microbial fuel cells (MFCs) are designed to exploit the metabolic capability of andophilic microorganisms to degrade the organic matter present in the waste. Anodophilic microorganisms use electrodes as terminal electron acceptors, generating a flow of electrons that can be used in the generation of electricity. In this work, we evaluated the ability of native microbial communities to degrade the organic matter present in wastewater from the coffee agroindustry and its electrogenic potential for the co-generation of electricity was evaluated using an MFC device developed by the authors. Wastewater samples obtained at different stages of the coffee wet process were used as inoculum and feedstocks. The system was operated in fed-batch, in both open and closed-circuit conditions, for 60 days. The degree of decontamination or bioremediation of the wastewater was assessed by measurements of physicochemical parameters. For the characterization of the native microbial community, microscopic and molecular techniques were used and the electrogenic potential was established by assessing the electrochemical performance of the system. With the proposed bioelectrochemical system, a reduction of up to 70% of the initial content of organic matter of the residual water from the coffee benefit was achieved, and open circuit voltages of up to 400 mV were recorded, comparable to those reported for conventional air breathing cathode MFC.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Bioelectrochemical System for Waste Degradation and Energy Recovery From Industrial Coffee Wastewater

2022

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“…Pengolahan tersebut menghasilkan air limbah yang berpotensi mencemari lingkungan. Secara fisik, air limbah tersebut berwarna kecokelatan sehingga dapat meningkatkan nilai kekeruhan pada air jika dialirkan langsung ke badan air (Campos et al, 2021;Elida Novita et al, 2018). Rentang nilai kekeruhan pada air limbah pengolahan kopi adalah 395-810 NTU (Fereja et al, 2020;E.…”

Section: Pendahuluanunclassified

Kajian Perbaikan Kualitas Air Limbah Pengolahan Kopi Menggunakan Metode Fitoremediasi Dengan Tanaman Eceng Gondok (Eichhornia Crassipes)

Novita

Pradana

2022

j. sains. teknologi.

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Air limbah pengolahan kopi berpotensi mencemari lingkungan. Eceng gondok merupakan biofilter yang dapat mereduksi polutan pada air limbah. Tujuan penelitian adalah menganalisis variasi panjang eceng gondok terhadap kemampuan reduksi polutan pada air limbah pengolahan kopi menggunakan metode fitoremediasi dengan penambahan aerasi. Terdapat 4 perlakuan fitoremediasi pada pengolahan air limbah menggunakan tanaman eceng gondok yaitu panjang akar 30 cm tanpa aerasi dan panjang akar (10, 20, dan 30 cm) dengan aerasi. Evaluasi reduksi polutan pada air limbah pengolahan kopi diidentifikasi menggunakan analisis efisiensi. Hasil penelitian menunjukkan bahwa fitoremediasi menggunakan eceng gondok dengan aerasi (panjang akar 30 cm) memiliki nilai efisiensi lebih tinggi dari pada tanpa aerasi pada pengolahan air limbah pengolahan kopi. Persentase nilai efisiensi penurunan polutan air limbah pengolahan kopi pada perlakukan panjang akar eceng gondok 30 cm dengan penambahan aerasi yang diindikasikan oleh parameter kekeruhan, BOD, COD, NH3-N, dan PO4-P yaitu sebesar 89,19%; 75,80%; 75,69%; 76,73%; dan 64,99%.

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“…Schwertmannite is reported to form a suffocating media as it precipitates on plants in adjacent AS soil drainage areas (Fitzpatrick et al 2017). Coffee DOC is not recommended since its environmental-related issues, related to high nutrient and DOC load that could lead to the formation of anoxic zones in aquatic environments, having previously been reported by Campos et al (2021). In acidic settings, with available sulfate and Fe, the formation of schwertmannite is highly probable (Fitzpatrick et al 2017).…”

Section: Precipitationmentioning

confidence: 99%

Removal and Potential Recovery of Dissolved Metals from Acid Sulfate Soil Drainage by Spent Coffee-Grounds and Dissolved Organic Carbon

Shahabi-Ghahfarokhi

Rahmati-Abkenar²,

Matson³

et al. 2021

SSRN Journal

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New sustainable perspectives for “Coffee Wastewater” and other by-products: A critical review

Cited by 45 publications

References 43 publications

A Bioelectrochemical System for Waste Degradation and Energy Recovery From Industrial Coffee Wastewater

A Bioelectrochemical System for Waste Degradation and Energy Recovery From Industrial Coffee Wastewater

Kajian Perbaikan Kualitas Air Limbah Pengolahan Kopi Menggunakan Metode Fitoremediasi Dengan Tanaman Eceng Gondok (Eichhornia Crassipes)

Removal and Potential Recovery of Dissolved Metals from Acid Sulfate Soil Drainage by Spent Coffee-Grounds and Dissolved Organic Carbon

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