厌氧消化加生物炭对制革废水产气效果的实验评价

IF 4.3 4区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL Water Reuse Pub Date : 2023-08-25 DOI:10.2166/wrd.2023.061
Solomon Asefa, V. Ancha, N. Habtu, L. Sundar
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引用次数: 0

摘要

研究了生物炭作为不同组成的添加剂对制革废水厌氧消化的影响。在实验室规模的沼气实验中,将由不同成分的哈特废料制成的热解生物炭加入厌氧分批消化器中。使用体积为500 ml的沼气池,在恒定的中温(38°C)下,以5%、10%、15%和20%(w/w)的比例探讨生物炭对厌氧消化的影响。结果表明,在含有0、5、10、15和20%生物炭的消化池(D0、D1、D2、D3和D4)中进行的五次实验测试中,累积甲烷和沼气产量分别为17.04、41.2、43.8、51.6、48.6%和150520、680、760690。将含有零生物炭(D0)的消化器的累积甲烷生产效率与添加5%、10%、15%和20%的生物炭进行比较,效果更为有利,分别提高了58.6%、61.1%、66.98%和64.94%。从这些结果来看,与对照相比,在厌氧消化中添加15%的生物炭会使甲烷增加三倍,并且比所有其他生物炭组合物产生更积极的影响。根据这一结果,必须添加适当剂量的生物炭才能最大限度地提高沼气产量。
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Experimental evaluation on the effect of biochar addition with anaerobic digestion of the tannery wastewater to improve biogas production
The use of biochar as an additive material in various compositions to the anaerobic digestion of the tannery wastewater was investigated. Pyrolytic biochar made from Khat waste with different compositions was added to anaerobic batch digesters in laboratory-scale biogas experiments. Biogas digesters with volume of 500 ml were used to explore the effects of biochar on anaerobic digestion in the ratios of 5, 10, 15, and 20% (w/w) at constant mesophilic temperature (38 °C). The results show that for five experimental tests in digesters (D0, D1, D2, D3, and D4), which contains 0, 5, 10, 15, and 20% of biochar, the cumulative methane and volume of biogas yields were, respectively, 17.04, 41.2, 43.8, 51.6, 48.6% and 150, 520, 680, 760, 690 . Comparing the cumulative methane production efficiency of the digester containing zero biochar (D0) with the addition of 5, 10, 15, and 20% biochar had more favorable effects and increased by 58.6, 61.1, 66.98, and 64.94%, respectively. From these results, adding 15% of biochar to anaerobic digestion causes a three-fold increase in methane compared to the control and more positive effects than all other biochar e compositions. According to this result, the right dose of biochar must be added to maximize biogas production.
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来源期刊
Water Reuse
Water Reuse Multiple-
CiteScore
6.20
自引率
8.90%
发文量
0
审稿时长
7 weeks
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