Anaerobic digestion of thin stillage of corn ethanol plant in a novel anaerobic baffled reactor

Sayedin, Farid; Kermanshahi-pour, Azadeh; He, Quan

doi:10.1016/j.wasman.2018.06.015

Cited by 26 publications

(7 citation statements)

References 63 publications

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“…Many ethanol plants treat the thin stillage as wastewater, and it often comprises a significant portion of the plant's wastewater stream. Since the thin stillage is well-known for its high total chemical oxygen demand (TCOD) and biological oxygen demand (BOD), most studies on ethanol wastewater have focused on biological treatment systems that are capable of effectively treating such high organic loadings (Nasr et al, 2012;Sayedin et al, 2018). While biological treatment is almost guaranteed to be a crucial part of the ethanol wastewater treatment process, thin stillage, among other potential sources of wastewater in an ethanol plant, also contains moderate levels of P (Kim & Dale, 2008).…”

Section: Introductionmentioning

confidence: 99%

Effects of coagulant morphology and chemical properties on soluble reactive phosphate removal in corn ethanol wastewater

Mancuso

Jamison

Zaporski

et al. 2021

Water Environment Research

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As ethanol production continues to rise around the world, and wastewater discharge requirements for phosphorus become more stringent, it is important that phosphorus removal technologies are evaluated on ethanol wastewater streams. In this study, five coagulating agents with distinct characteristics were evaluated for their soluble reactive phosphate (SRP) removal performance on both a synthetic wastewater sample and a wastewater sample collected from a corn ethanol manufacturer. All coagulants demonstrated a positive correlation between coagulant dose and percent removal of SRP on both samples. Alum and ferric chloride produced the highest SRP removal efficiencies on both the ethanol and synthetic wastewater, indicating that prepolymerized, high-basicity coagulants (e.g., aluminum chlorohydrate, poly-aluminum ferric chloride) are less effective for SRP removal than nonpolymerized coagulants. The background matrix analysis combined with the pH studies revealed that the high alkalinity in the ethanol wastewater has a substantial inhibitory effect on SRP removal capacity that supersedes pH effects. These experimental results suggest that the Al-Al and Al-OH bonds in the heavily hydroxylated and polymerized structure of high-basicity coagulants are very rigid, which could prevent inner-sphere complexation and drive a less effective outer-sphere interaction, thus hindering SRP removal efficiency. Practitioner points • Five different coagulants are evaluated for reactive phosphate removal from wastewater.• Alum and ferric chloride show higher removal efficiency than prepolymerized and high-basicity coagulants.• Optimal removal pH increases with increasing coagulant basicity.

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Section: Introductionmentioning

confidence: 99%

Effects of coagulant morphology and chemical properties on soluble reactive phosphate removal in corn ethanol wastewater

Mancuso

Jamison

Zaporski

et al. 2021

Water Environment Research

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“…Anaerobic baffled reactor (ABR)has the advantages of low operation cost, strong shock load resistance, and good hydraulic conditions [4][5][6][7]. Using ABR as a pre-treatment process for agricultural irrigation and utilization of rural sewage can not only remove most of the organic pollutants and pollutants and suspended solids in the sewage [8] but also effectively kill the pathogenic bacteria in the sewage and fully retain the nitrogen and phosphorus in the sewage [9], so as to reduce the amount of fertilizer, reduce the non-point source pollution caused by fertilizer application, and improve the yield of crops.…”

Section: Introductionmentioning

confidence: 99%

Effect of ElasticFiller on Pollutant Removal in Each Compartment of ABR

Zhang

et al. 2020

Sustainability

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This study was aimed to explore the effect of elastic filler on pollutant removal in each compartment of anaerobic baffled reactor (ABR), ABR with elastic filler, and ABR without elastic filler were compared. The result showed that elastic filler increased the removal rate of chemical oxygen demand (COD) and suspended solid (SS) in the first compartment, decreased the removal rate of COD and SS in the second and third compartments, and had little effect on the removal rate of COD and SS in the fourth compartment. Elastic filler increased the increase rate of ammonia nitrogen in the first and second compartments, decreased the increase rate of ammonia nitrogen in the third and fourth compartments; elastic filler had little effect on the nitrate nitrogen, nitrite nitrogen, total nitrogen and total phosphorus in each compartment of ABR. In general, elastic filler could improve the removal rate of COD and SS of ABR but had little effect on the increase rate of ammonia nitrogen, the removal rate of nitrate nitrogen, nitrite nitrogen, total nitrogen and total phosphorus. Elastic filler slightly increased the concentration of formic acid, acetic acid, propionic acid, and butyric acid in the first compartment of ABR, and slightly decreased the sum of formic acid and acetic acid in the second, hird and fourth compartments. Elastic filler did not change the composition of dissolved organic matter (DOM)in each compartment of ABR, but changed the kinds and contents of aromatic proteins, soluble microbial products and humic acids in each compartment of ABR. Elastic filler had little effect on ABR in the removal of aromatic proteins, but they could improve the removal rate of soluble microbial products and humicacids. Elastic filler slightly increased the degree of DOM humification (or maturity) in ABR effluent, but did not change the main source of humus like substance and DOM in ABR effluent.Sustainability 2020, 12, 2325 2 of 16 suspended solids in the sewage [8] but also effectively kill the pathogenic bacteria in the sewage and fully retain the nitrogen and phosphorus in the sewage [9], so as to reduce the amount of fertilizer, reduce the non-point source pollution caused by fertilizer application, and improve the yield of crops. However, the chemical oxygen demand (COD)and suspended solid (SS)of ABR effluent are high [10][11][12], which not only cannot meet the water quality requirements of all crop irrigation but also improves the operation load of the subsequent treatment process.Elastic filler has the advantages of light weight, stable performance, and low price. Adding elastic filler to ABR can increase its biomass and retention capacity, thus improving its removal effect on COD and SS. Wang Binkeet al. [13] showed that the removal efficiency of COD by ABR (five compartments) without elastic filler and ABR (four compartments) with elastic filler was similar. Yu Yaqin et al. [14] showed that elastic filler accelerated the acclimation of granular sludge in ABR and shortened the start-up time of ABR. Huang Jiguo et al. [...

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“…A novel configuration anaerobic baffled reactor, with solid/ liquid/gas separators, was used to treat thin stillage (Sayedin, Kermanshahi-pour, & He, 2018). The authors reported high COD removal (94%-97%), sulfate removal (94%-97%), and methane yields of 294-310 ml methane per g COD removed, at OLRs of 1.0-3.5 kgCOD/m 3 /day.…”

Section: Annual Literature Reviewmentioning

confidence: 99%

“…The authors reported high COD removal (94%-97%), sulfate removal (94%-97%), and methane yields of 294-310 ml methane per g COD removed, at OLRs of 1.0-3.5 kgCOD/m 3 /day. Without the solid/liquid/gas separators, Sayedin et al (2018) found that a conventional ABR performance dropped (74%-94% COD removal; 67%-76% sulfate removal; 140-240 ml methane per gram of COD removed) at OLRs between 1.1 and 1.8 kgCOD/m 3 /day (Sayedin et al, 2018).…”

Section: Annual Literature Reviewmentioning

confidence: 99%

Food‐processing wastes

Frenkel

Cummings

Maillacheruvu

et al. 2020

Water Environment Research

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Literature published in 2018 and literature published in 2019 related to food-processing wastes treatment for industrial applications are reviewed. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following food-processing industries and applications: general, meat and poultry, fruits and vegetables, dairy and beverage, and miscellaneous treatment of food wastes.

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Anaerobic digestion of thin stillage of corn ethanol plant in a novel anaerobic baffled reactor

Cited by 26 publications

References 63 publications

Effects of coagulant morphology and chemical properties on soluble reactive phosphate removal in corn ethanol wastewater

Effects of coagulant morphology and chemical properties on soluble reactive phosphate removal in corn ethanol wastewater

Effect of ElasticFiller on Pollutant Removal in Each Compartment of ABR

Food‐processing wastes

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