Multiple effects of trace elements on methanogenesis in a two-phase anaerobic membrane bioreactor treating starch wastewater

Yu, Dawei; Li, Chao; Wang, Lina; Zhang, Junya; Liu, Jing; Wei, Yuansong

doi:10.1007/s00253-016-7289-y

Cited by 13 publications

(7 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These methods can demand up to 1.8 parts of water per part of wheat flour [6]. This wastewater has to be treated at the end of the process, which represents an environmental challenge due to the large chemical oxygen demand (COD) of the wastewater, generally ranging between 6 and 10 g/L [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Edible Protein Production by Filamentous Fungi using Starch Plant Wastewater

Filho

Zamani

Taherzadeh

2018

Waste Biomass Valor

View full text Add to dashboard Cite

The process to obtain starch from wheat requires high amounts of water, consequently generating large amounts of wastewater with very high environmental loading. This wastewater is traditionally sent to treatment facilities. This paper introduces an alternative method, where the wastewater of a wheat-starch plant is treated by edible filamentous fungi (Aspergillus oryzae and Rhizopus oryzae) to obtain a protein-rich biomass to be used as e.g. animal feed. The wastewater was taken from the clarified liquid of the first and second decanter (ED1 and ED2, respectively) and from the solid-rich stream (SS), whose carbohydrate and nitrogen concentrations ranged between 15 and 90 and 1.25-1.40 g/L, respectively. A. oryzae showed better performance than R. oryzae, removing more than 80% of COD after 3 days for ED1 and ED2 streams. Additionally, 12 g/L of dry biomass with protein content close to 35% (w/w) was collected, demonstrating the potential of filamentous fungi to be used in wastewater valorization. High content of fermentable solids in the SS sample led to high production of ethanol (10.91 g/L), which can be recovered and contribute to the economics of the process.

show abstract

Section: Introductionmentioning

confidence: 99%

Edible Protein Production by Filamentous Fungi using Starch Plant Wastewater

Filho

Zamani

Taherzadeh

2018

Waste Biomass Valor

View full text Add to dashboard Cite

show abstract

“…2b). For instance, acetate concentrations were decreased to values lower than 0.3 g/L, which can be related to the improved performance of methanogenic microorganisms (Yu et al, 2016). On top of this, the highest F420 activity was observed during the second experimental period.…”

Section: Ad Of Nickel Spiked Sludge At Continuous Mode Operationmentioning

confidence: 85%

Nickel spiking to improve the methane yield of sewage sludge

Tsapekos

Alvarado-Morales

Tong

et al. 2018

Bioresource Technology

View full text Add to dashboard Cite

The presence of micro-nutrients can be stimulatory for the anaerobic digestion (AD) of hardly degradable wastes and thus, improve process performance. Among the essential trace elements, nickel is involved in multiple important enzymes necessary for efficient AD. The present study investigates the effect of nickel spiked sewage sludge on batch and continuous mode operation. Metal spiking was conducted in the form of nanoparticles (Ni-NPs) and salt (NiCl2•6H2O). Results from batch assays showed that 5 mgNi-Salt/kgVS in the presence of Nitrilotriacetic acid (NTA) enhanced the methane yield by ∼10% compared to the untreated sample. The impact of Ni-NPs in the AD process was also positive, but slightly lower compared to the effect of NiCl2•6H2O. The stimulatory impact of Ni was also revealed in continuously fed digester boosting the methane yield by ∼8%. Overall, the improved methane production indicated that methanogenic archaea were favoured by the simultaneous supplementation of Ni and NTA.

show abstract

“…The community structure results showed that Methanosaeta significantly increased with ferric and copper supplementations in the sFe and sCu stages (Figure 6). The triggered effects on acetoclastic Methanosaeta may be sustained in the copper period [39], as ferric accumulated in the reactor [40]. Kinetic patterns represent methane production in a mathematics form.…”

Section: Deciphering the Methanogenic Kinetic Response To Ferricmentioning

confidence: 99%

Prediction of the Long-Term Effect of Iron on Methane Yield in an Anaerobic Membrane Bioreactor Using Bayesian Network Meta-Analysis

Liang

Nilusha

et al. 2021

Membranes

Self Cite

View full text Add to dashboard Cite

A method for predicting the long-term effects of ferric on methane production was developed in an anaerobic membrane bioreactor treating food processing wastewater to provide management tools for maximizing methane recovery using ferric based on a batch test. The results demonstrated the accuracy of the predictions for both batch and long-term continuous operations using a Bayesian network meta-analysis based on the Gompertz model. The prediction bias of methane production for batch and continuous operations was minimized, from 11~19% to less than 0.5%. A biochemical methane potential-based Bayesian network meta-analysis suggested a maximum 2.55% ± 0.42% enhancement for Fe2.25. An anaerobic membrane bioreactor improved the methane yield by 2.27% and loading rate by 4.57% for Fe2.25, operating in the sequenced batch mode. The method allowed for a predictable methane yield enhancement based on the biochemical methane potential. Ferric enhanced the biochemical methane potential in batch tests and the methane yield in a continuously operated reactor by a maximum of 8.20% and 7.61% for Fe2.25, respectively. Copper demonstrated a higher methane (18.91%) and sludge yield (17.22%) in batch but faded in the continuous operation (0.32% of methane yield). The enhancement was primarily due to changing the kinetic patterns for the last period, i.e., increasing the second methane production peak (k71), bringing forward the second peak (λ7, λ8), and prolonging the second period (k62). The dual exponential function demonstrated a better fit in the last three stages (after the first peak), which implied that syntrophic methanogenesis with a ferric shuttle played a primary role in the last three methane production periods, in which long-term effects were sustained, as the Bayesian network meta-analysis predicted.

show abstract

Multiple effects of trace elements on methanogenesis in a two-phase anaerobic membrane bioreactor treating starch wastewater

Cited by 13 publications

References 37 publications

Edible Protein Production by Filamentous Fungi using Starch Plant Wastewater

Edible Protein Production by Filamentous Fungi using Starch Plant Wastewater

Nickel spiking to improve the methane yield of sewage sludge

Prediction of the Long-Term Effect of Iron on Methane Yield in an Anaerobic Membrane Bioreactor Using Bayesian Network Meta-Analysis

Contact Info

Product

Resources

About