Using biochar from spent coffee grounds to treat pollution in livestock wastewater

  • Affiliations:

    1 Faculty of Environment, Hanoi University of Mining and Geology, Vietnam
    2 Institute of Environmental Science, Engineering and Management, Industrial University of Ho Chi Minh City, Vietnam
    3 Microbiology Laboratory, Quatest 1, Directorate for Standard Metrology and Quality, Vietnam

  • *Corresponding:
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  • Received: 18th-Aug-2020
  • Revised: 3rd-Sept-2020
  • Accepted: 31st-Oct-2020
  • Online: 31st-Oct-2020
Pages: 135 - 144
Views: 1648
Downloads: 542
Rating: 5.0, Total rating: 53
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Abstract:

Four types of biochar material synthesized from spent coffee grounds by slow pyrolysis process CF1 (500(C/0.5h); CF2 (500(C/1.5h); CF3 (500(C/3h); CF4 (500(C/6h) is studied to treat two pollution parameters (COD and TSS) in livestock wastewater. Material characteristics were determined by SEM, EDX and BET methods. The results showed that the 4 samples of biochar materials were structured fiber clearly, the interplanar spacing which corresponds to the lattice plane. The C content in the biochar sample is higher than the initial raw material sample; the highest value recorded reaches 90.61% C (CF2). 100 mL of the original livestock waster water is filtered through columns with 4g of biochar CF1-CF4 during reaction times varied from 0h, 1h, 4h and 8h, the COD treatment efficiency and adsorption content of CF4 sample is highest of 96.41% and 188 mg/g after 8h, and the lowest value is 76.67% and 149.5 mg/g after 1h recorded in CF3 sample, however the COD value after treatment is still higher from 1.2 to 1.46 times than Vietnamese standard 62: 2016/MONRE - national technical regulation on the effluent of livestock. The CF3 material samples have the highest TSS treatment efficiency and adsorption content of 95.19% and 6.425 mg/g after 8h and the lowest of 66.78% and 4.575 mg/g recorded in CF1 samples after 1h, response the requirements of QCVN 62: 2016/MONRE. The results showed that biochar is a potential sorbent to removed pollutants from waste water.

How to Cite
Tran, H.Thu Thi, Nguyen, T.Xuan, Trinh, Y.Hai Thi, To, H.Thi, Dang, H.Thanh Thi, Vu, L.Thuy Thi, Nguyen, P.Thi and Dinh, T.Thu 2020. Using biochar from spent coffee grounds to treat pollution in livestock wastewater (in Vietnamese). Journal of Mining and Earth Sciences. 61, 5 (Oct, 2020), 135-144. DOI:https://doi.org/10.46326/JMES.2020.61(5).15.
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