Abstract：
:In this study, the performance of a laboratory scale upflow anaerobic sludge blanket (UASB) reactor operating at mesophilic temperature (35 °C) was examined. Cattle slaughterhouse wastewater (CSWW) was used as the main substrate. The total and effective volumes of the reactor were 8 L and 6 L, respectively. Twelve different organic loading rates (OLR) were applied and the performance was evaluated. The chemical oxygen demand (COD) removal efficiency was more than 90% during batch study. In the continuous study, COD removal was also approximately 90% at OLR 0.4 g/L d-1 which subsequently dropped to below 50% when the loading rate increased to 15 g/L d-1. Approximately 5 L/d of biogas was obtained with high methane concentration at stages VI and XI corresponding to OLR of 2 and 10 g/L d-1, respectively. It was observed that the concentration of volatile fatty acids was low and that the alkalinity of the wastewater was sufficient to avoid acidification. Specific methane yields of 0.36 and 0.38 LCH₄/g COD added were achieved at OLR 7 and 10 g/L d-1. A hydraulic retention time (HRT) of 1 day was sufficient to remove greater than 70% of COD which correspond to 89% methane concentration. Parameters like soluble COD, NH₃-N, pH, alkalinity, total suspended solid (TSS), fats, oil, and grease were also investigated. The results show that the UASB reactor could serve as a good alternative for anaerobic treatment of CSWW and methane production.
journal_name
Int J Environ Res Public Healthauthors
Musa MA,Idrus S,Hasfalina CM,Daud NNNdoi
10.3390/ijerph15102220subject
Has Abstractpub_date
2018-10-11 00:00:00issue
10eissn
1661-7827issn
1660-4601pii
ijerph15102220journal_volume
15pub_type
杂志文章abstract：:Although the world's forcibly displaced population reached 79.5 million in 2019, their difficult situations and the issues they struggle with remain practically invisible in Spanish society. Therefore, it seems necessary to provide greater insight into an invisible reality to improve the refugees' situation. The prese...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
doi：10.3390/ijerph17228365
更新日期：2020-11-12 00:00:00
abstract：INTRODUCTION:Smoke-free homes can help protect children from tobacco smoke exposure (TSE). The objective of this study was to conduct a meta-analysis to quantify effects of interventions on changes in tobacco smoke pollution in the home, as measured by air nicotine and particulate matter (PM). METHODS:We searched MEDL...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章,meta分析,评审
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更新日期：2015-12-18 00:00:00
abstract：:Heavy metal contamination is currently a major environmental concern, as most agricultural land is being polluted from municipal discharge. Among various other pollutants, cadmium (Cd), one of the most harmful heavy metals, enters into the food chain through the irrigation of crops with an industrial effluent. In the ...
journal_title：International journal of environmental research and public health
pub_type： 杂志文章
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更新日期：2020-05-29 00:00:00
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journal_title：International journal of environmental research and public health
pub_type： 杂志文章
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更新日期：2020-09-27 00:00:00
abstract：:Asthma is a chronic respiratory disease which is associated with higher levels of systemic inflammation. The causes of asthma remain poorly understood. Unhealthy diet and food allergy are potential risk factors for developing asthma. The prevalence of asthma in the Arabian Gulf region (AGR), and Kuwait, Saudi Arabia a...
journal_title：International journal of environmental research and public health
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journal_title：International journal of environmental research and public health
pub_type： 杂志文章,随机对照试验
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更新日期：2020-09-21 00:00:00
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pub_type： 杂志文章
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更新日期：2018-05-02 00:00:00
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pub_type： 杂志文章,评审
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更新日期：2017-04-29 00:00:00
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更新日期：2018-12-24 00:00:00
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doi：10.3390/ijerph16091588
更新日期：2019-05-07 00:00:00
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pub_type： 杂志文章
doi：10.3390/ijerph16214214
更新日期：2019-10-30 00:00:00
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journal_title：International journal of environmental research and public health
pub_type： 杂志文章
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更新日期：2020-03-10 00:00:00
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journal_title：International journal of environmental research and public health
pub_type： 杂志文章,meta分析,评审
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更新日期：2014-04-23 00:00:00
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pub_type： 杂志文章
doi：10.3390/ijerph14091017
更新日期：2017-09-05 00:00:00
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journal_title：International journal of environmental research and public health
pub_type： 杂志文章
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更新日期：2021-01-14 00:00:00
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更新日期：2020-06-05 00:00:00
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更新日期：2010-10-01 00:00:00
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pub_type： 杂志文章,评审
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更新日期：2016-07-22 00:00:00
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pub_type： 杂志文章,评审
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journal_title：International journal of environmental research and public health
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更新日期：2018-07-13 00:00:00
