Application of Moringa Oleifera seed extract to treat coffee fermentation wastewater

JOURNAL OF HAZARDOUS MATERIALS

卷:329

Article

Garde, William K.¹  Buchberger, Steven G.²  Wendell, David³  Kupferle, Margaret J.³ 

[1] Univ Cincinnati, Dept Biomed, Chem, Environm Engn, 230 Sattler Rd, Spring Branch, TX 78070 USA

[2] Univ Cincinnati, Dept Civil & Architectural Engn & Construct Manag, POB 210071, Cincinnati, OH 45221 USA

[3] Univ Cincinnati, Dept Biomed, Chem, Environm Engn, POB 210012, Cincinnati, OH 45221 USA

关键词: Coffee;    Wastewater;    Moringa;    Coagulation;    Appropriate technology;   

DOI  :  10.1016/j.jhazmat.2017.01.006

来源: Elsevier

【 摘 要 】

Wastewater generated from wet processing of coffee cherries degrades stream water quality downstream of processing mills and impacts human health. The widespread popularity of coffee as an export makes this a global problem, although the immediate impact is local. Approximately 40% of all coffee around the world is wet processed, producing wastewater rich in organic nutrients that can be hazardous to aquatic systems. Moringa Oleifera Seed Extract (MOSE) offers promise as a local and affordable appropriate coagulation technology for aiding in the treatment of coffee wastewater. Field research was conducted at the Kauai Coffee Company to investigate the application of MOSE to treat coffee fermentation wastewater (CFW). Coagulation tests were conducted at five pH CFW levels (3-7) and MOSE doses (0-4 g/L). After settling, TSS, COD, nitrate, nitrite, total nitrogen, and pH of supernatant from each test were measured. MOSE reduced TSS, COD, nitrate, and nitrite in CFW to varying degrees dependent on pH and dose applied. TSS removal ranged from 8% to 54%. Insoluble COD removal ranged from 26% to 100% and total COD removal ranged from 1% to 25%. Nitrate and nitrite reduction ranged from 20% to 100%. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free