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Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia

Received: 15 June 2016     Accepted: 5 July 2016     Published: 21 January 2017
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Abstract

The objective of this study was to assess the effects of recurrent effluent outfall from conventional wet washed coffee refineries (CWCR) on environmental flows (Eflows) based on the physicochemical parameters & benthos assemblages as biological indicators. The experiment was done using complete randomized design (CRD) with 3 composite replicates at each 24 sampling sites of 4 river water basins. Six sampling sites were selected for physico-chemical & 2 sampling sites were selected for benthos assemblages samples along each 4 river basin. Data analyses were performed by different statistical analyses such as analysis of variance (ANOVA) using SAS 9.2 and Minitab 16.0 software. Results of physicochemical parameters with biological revealed that there is highly significant effect between 4 Eflows & among 24 sites at (p<0.05). Characteristics of effluent outfall from CWCR has a BOD of up to 2993 mg/L and a COD of up to 2867 mg/L as well as the acidity of pH below 3. These results can lead to depletion of DO and a decrease in pH (due to fermentation of organic matter) may hamper the sustainability of water bodies, which can kill off virtually all aquatic life. Except pH and DO, the other physico-chemical parameters exhibited that they were negative correlation with benthos assemblages. The results suggest that Eflows status of DS2 were depredation by effluent outfall from the conventional wet coffee refineries as compared to UPS. Therefore, face urgent intervention in the area of coffee refinery for effluent management and well designed treatment technologies (lagoons) for coffee waste treatment is highly recommended.

Published in American Journal of Environmental Protection (Volume 5, Issue 6)
DOI 10.11648/j.ajep.20160506.17
Page(s) 199-207
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Assimilation Capacity, Benthos, Coffee Refinery, Lagoon, Pulp, Riverbank, Ecohydrological

References
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[4] Tsigereda Kebede, Metadel Adane, Mekibib David, Fisseha Ittana, 2013. Effectiveness of Advanced Vs Conventional Wet Coffee Processing Technologies in Effluent Wastewater Quality, Int. J. Sci. Eng. Res., vol. 4, no. 8 (2229–5518), pp. 1236–1243.
[5] Asrat Gebremariam, Woldesenbet Belay, Bhagwan Singh, 2014. Characteristics of Wet Coffee Processing Waste and Its Environmental Impact in Ethiopia, Int. J. Res. Eng. Sci., vol. 2, no. 4.
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[7] Asha, G. & Kumar, B. M., 2016. Performance Evaluation of Sequencing Batch Reactor for Treatment of Coffee Pulping Wastewater, vol. 9, no. 5, pp. 1–9.
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Cite This Article
  • APA Style

    Tadesse Mosissa, Bayu Dume, Dechassa Tegegne, Moti Yohannes. (2017). Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia. American Journal of Environmental Protection, 5(6), 199-207. https://doi.org/10.11648/j.ajep.20160506.17

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    ACS Style

    Tadesse Mosissa; Bayu Dume; Dechassa Tegegne; Moti Yohannes. Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia. Am. J. Environ. Prot. 2017, 5(6), 199-207. doi: 10.11648/j.ajep.20160506.17

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    AMA Style

    Tadesse Mosissa, Bayu Dume, Dechassa Tegegne, Moti Yohannes. Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia. Am J Environ Prot. 2017;5(6):199-207. doi: 10.11648/j.ajep.20160506.17

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  • @article{10.11648/j.ajep.20160506.17,
      author = {Tadesse Mosissa and Bayu Dume and Dechassa Tegegne and Moti Yohannes},
      title = {Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia},
      journal = {American Journal of Environmental Protection},
      volume = {5},
      number = {6},
      pages = {199-207},
      doi = {10.11648/j.ajep.20160506.17},
      url = {https://doi.org/10.11648/j.ajep.20160506.17},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajep.20160506.17},
      abstract = {The objective of this study was to assess the effects of recurrent effluent outfall from conventional wet washed coffee refineries (CWCR) on environmental flows (Eflows) based on the physicochemical parameters & benthos assemblages as biological indicators. The experiment was done using complete randomized design (CRD) with 3 composite replicates at each 24 sampling sites of 4 river water basins. Six sampling sites were selected for physico-chemical & 2 sampling sites were selected for benthos assemblages samples along each 4 river basin. Data analyses were performed by different statistical analyses such as analysis of variance (ANOVA) using SAS 9.2 and Minitab 16.0 software. Results of physicochemical parameters with biological revealed that there is highly significant effect between 4 Eflows & among 24 sites at (p<0.05). Characteristics of effluent outfall from CWCR has a BOD of up to 2993 mg/L and a COD of up to 2867 mg/L as well as the acidity of pH below 3. These results can lead to depletion of DO and a decrease in pH (due to fermentation of organic matter) may hamper the sustainability of water bodies, which can kill off virtually all aquatic life. Except pH and DO, the other physico-chemical parameters exhibited that they were negative correlation with benthos assemblages. The results suggest that Eflows status of DS2 were depredation by effluent outfall from the conventional wet coffee refineries as compared to UPS. Therefore, face urgent intervention in the area of coffee refinery for effluent management and well designed treatment technologies (lagoons) for coffee waste treatment is highly recommended.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia
    AU  - Tadesse Mosissa
    AU  - Bayu Dume
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    AU  - Moti Yohannes
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    DO  - 10.11648/j.ajep.20160506.17
    T2  - American Journal of Environmental Protection
    JF  - American Journal of Environmental Protection
    JO  - American Journal of Environmental Protection
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    EP  - 207
    PB  - Science Publishing Group
    SN  - 2328-5699
    UR  - https://doi.org/10.11648/j.ajep.20160506.17
    AB  - The objective of this study was to assess the effects of recurrent effluent outfall from conventional wet washed coffee refineries (CWCR) on environmental flows (Eflows) based on the physicochemical parameters & benthos assemblages as biological indicators. The experiment was done using complete randomized design (CRD) with 3 composite replicates at each 24 sampling sites of 4 river water basins. Six sampling sites were selected for physico-chemical & 2 sampling sites were selected for benthos assemblages samples along each 4 river basin. Data analyses were performed by different statistical analyses such as analysis of variance (ANOVA) using SAS 9.2 and Minitab 16.0 software. Results of physicochemical parameters with biological revealed that there is highly significant effect between 4 Eflows & among 24 sites at (p<0.05). Characteristics of effluent outfall from CWCR has a BOD of up to 2993 mg/L and a COD of up to 2867 mg/L as well as the acidity of pH below 3. These results can lead to depletion of DO and a decrease in pH (due to fermentation of organic matter) may hamper the sustainability of water bodies, which can kill off virtually all aquatic life. Except pH and DO, the other physico-chemical parameters exhibited that they were negative correlation with benthos assemblages. The results suggest that Eflows status of DS2 were depredation by effluent outfall from the conventional wet coffee refineries as compared to UPS. Therefore, face urgent intervention in the area of coffee refinery for effluent management and well designed treatment technologies (lagoons) for coffee waste treatment is highly recommended.
    VL  - 5
    IS  - 6
    ER  - 

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Author Information
  • Department of Natural Resource Management, College of Agriculture & Veterinary Medicine, Jimma University, Jimma, Ethiopia

  • Department of Natural Resource Management, College of Agriculture & Veterinary Medicine, Jimma University, Jimma, Ethiopia

  • Department of Microbiology and Public Health, School of Veterinary Medicine, Jimma University, Jimma, Ethiopia

  • Department of Microbiology and Public Health, School of Veterinary Medicine, Jimma University, Jimma, Ethiopia

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