Performance of full-scale slaughterhouse effluent treatment plant (SETP)

Qamar, Mohd Obaid; Farooqi, Izharul Haq; Munshi, Faris M.; Alsabhan, Abdullah H.; Kamal, Mohab Amin; Khan, Mohammad Amir; Alwadai, Aisha Saleh

doi:10.1016/j.jksus.2022.101891

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…During the anaerobic co-digestion of SPM with food, Cárdenas-Cleves et al [31] discovered similar results. According to Qamar et al [30], pH adjustment through alkali treatment can maintain the stability of the process. As for the 80% SPM: 20% SHWW mix ratio, the initial pH significantly increased from 7.2 to 8.10 in the effluent due to the consumption of VFAs, thus indicating the presence of a buffer effect that maintained optimal AD conditions.…”

Section: Substrates Characteristicsmentioning

confidence: 99%

“…Furthermore, the slow hydrolysis of cellulosic carbohydrates in the SPM explains its low bioavailability for bioconversion processes, which requires longer retention times and reduces the efficiency of bioconversion and hence the performance of the biogas plants [22,24]. Fortunately, substrate digestibility, system stability, and reactor performance can all be improved through strategies such as pre-treatment [25][26][27][28], two-stage AD systems [25,29]), pH control by chemical alkali [20,30], temperature selection [9,25] and ACoD [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Abattoir Wastewater Treatment in Anaerobic Co-Digestion with Sugar Press Mud in Batch Reactor for Improved Biogas Yield

Anyango

Wandera

Raude

2022

Water

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Slaughterhouse wastewater (SHWW) has a great potential to generate biomethane energy when subjected to anaerobic digestion (AD). Nonetheless, the process is susceptible and prone to failure because of slow hydrolysis and the production of inhibitory compounds. Accordingly, to address this deficiency, anaerobic co-digestion (ACoD) is used to improve the treatment efficiency of the monodigestion of this high-strength waste and thereby increase methane production. The current investigation utilized the biochemical methane potential (BMP) test to assess the treatment performance of co-digested SHWW with sugar press mud (SPM) for improving biomethane energy recovery. It was established that the ACoD of SHWW with SPM increased methane (CH4) yield, enhanced organic matter removal efficiency and improved process stability, while also presenting synergistic effects. The anaerobic monodigestion (AMoD) of SHWW (100SHWW: 0SPM) showed a higher CH4 yield (348.40 CH4/g VS) compared with SPM (198.2 mL CH4/g VS). The 80% SPM: 20% SHWW mix ratio showed the optimum results with regard to organic matter removal efficiency (67%) and CH4 yield (478.40 mL CH4/g VS), with increments of 27% and 59% compared with AMoD of SHWW and SPM, respectively. However, it is also possible to achieve 5% and 46% CH4 yield increases under a 40% SPM: 60% SHWW mix proportion in comparison to the AMoD of SHWW and SPM, respectively. Furthermore, kinetic analysis of the study using a modified Gompertz model revealed that the CH4 production rate increased while the lag time decreased. The synergistic effects observed in this study demonstrate that incorporating SPM into the substrate ratios investigated can improve the AD of the SHWW. In fact, this represents the environmental and economic benefits of successfully implementing this alternative solution. Bioenergy recovery could also be used to supplement the country’s energy supply. This would help to increase the use of cleaner energy sources in electricity generation and heating applications, reducing the greenhouse gas effect.

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Section: Substrates Characteristicsmentioning

confidence: 99%