In-situ prevention of hydrogen sulfide formation during anaerobic digestion using zinc oxide nanowires

Lupitskyy, Robert; Alvarez-Fonseca, Dania; Herde, Zachary D.; Satyavolu, Jagannadh

doi:10.1016/j.jece.2017.11.048

Cited by 24 publications

(7 citation statements)

References 24 publications

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“…OMS-2 NPs also increased the quantities of acetogenic bacteria and Archaea and promoted acetogenesis and methanogenesis. Lupitskyy et al (2018) studied the influence of zinc oxide nanowires at a concentration of 1 g/L on the AD of AGS. According to the author, the use of ZnO nanowires as inorganic reactive absorbents can help in reducing the sulfur-containing compounds in wastewater and improve biogas production.…”

Section: Nanowiresmentioning

confidence: 99%

See 1 more Smart Citation

Nanomaterials for biogas augmentation towards renewable and sustainable energy production: A critical review

Khan

Zaidi

Naseer

et al. 2022

Front. Bioeng. Biotechnol.

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Nanotechnology is considered one of the most significant advancements in science and technology over the last few decades. However, the contemporary use of nanomaterials in bioenergy production is very deficient. This study evaluates the application of nanomaterials for biogas production from different kinds of waste. A state-of-the-art comprehensive review is carried out to elaborate on the deployment of different categories of nano-additives (metal oxides, zero-valent metals, various compounds, carbon-based nanomaterials, nano-composites, and nano-ash) in several kinds of biodegradable waste, including cattle manure, wastewater sludge, municipal solid waste, lake sediments, and sanitary landfills. This study discusses the pros and cons of nano-additives on biogas production from the anaerobic digestion process. Several all-inclusive tables are presented to appraise the literature on different nanomaterials used for biogas production from biomass. Future perspectives to increase biogas production via nano-additives are presented, and the conclusion is drawn on the productivity of biogas based on various nanomaterials. A qualitative review of relevant literature published in the last 50 years is conducted using the bibliometric technique for the first time in literature. About 14,000 research articles are included in this analysis, indexed on the Web of Science. The analysis revealed that the last decade (2010–20) was the golden era for biogas literature, as 84.4% of total publications were published in this timeline. Moreover, it was observed that nanomaterials had revolutionized the field of anaerobic digestion, methane production, and waste activated sludge; and are currently the central pivot of the research community. The toxicity of nanomaterials adversely affects anaerobic bacteria; therefore, using bioactive nanomaterials is emerging as the best alternative. Conducting optimization studies by varying substrate and nanomaterials’ size, concentration and shape is still a field. Furthermore, collecting and disposing nanomaterials at the end of the anaerobic process is a critical environmental challenge to technology implementation that needs to be addressed before the nanomaterials assisted anaerobic process could pave its path to the large-scale industrial sector.

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Section: Nanowiresmentioning

confidence: 99%

“…Sulfates were added at the beginning of each feeding cycle. Results showed that nanowires reduced the sulfide toxicity during AD as no methanogenic activity and biogas inhibition were observed (Lupitskyy et al, 2018). The summary of the reported nanowire and its influence on biogas generation is shown in Table 7.…”

Section: Nanowiresmentioning

confidence: 99%

Nanomaterials for biogas augmentation towards renewable and sustainable energy production: A critical review

Khan

Zaidi

Naseer

et al. 2022

Front. Bioeng. Biotechnol.

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“…The principal compound of interest is sulfide, which is biologically produced by a consortium of sulfate-reducing microorganisms. Sulfide forms complexes with Ag NPs (Kaegi et al, 2013), Cu NPs (Hatamie et al, 2014), and ZnO NPs (Lupitskyy et al, 2018). There are also coarse particles and colloids that can heteroaggregate with ENPs during transit in the sewer.…”

Section: Issues and Challengesmentioning

confidence: 99%

The effects of engineered nanoparticles on nitrification during biological wastewater treatment

Xing

Harper

2021

Biotech & Bioengineering

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Technological advancements in the past few decades have made it possible to manufacture nanomaterials at a large scale, and engineered nanoparticles (ENPs) are increasingly found in consumer products, such as cosmetics, sports products, and LED displays. A large amount of these ENPs end up in wastewater and potentially impact the performance of wastewater treatment plants (WWTPs). One important function of the WWTP is nitrification, which is carried out by the actions of two groups of bacteria, ammonia-oxidizing bacteria (AOB), and nitrite-oxidizing bacteria (NOB). Since most ENPs are found to have or are designed to have antimicrobial activities, it is a legitimate concern that ENPs entering WWTPs may have negative impacts on nitrification. In this paper, the effects of ENPs on nitrification are discussed, focusing mainly on autotrophic nitrification by AOBs and NOBs. This review also covers ENP effects on anaerobic ammonium oxidation (anammox).Generally, nitrifiers in pure and mixed cultures can be inhibited by a variety of ENPs, but stress response mechanisms may attenuate toxicity. Long-term studies demonstrated that a wide range of NPs could cause severe deterioration of AOBs and/ or NOBs when the influent concentration exceeded an inhibition threshold. Proposed mechanisms include the generation of reactive oxygen species, dissolved metals, physical disruption of cell membranes, bacterial engulfment, and intracellular accumulation of ENPs. Future research needs are also discussed.

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“…The first category includes absorption, adsorption, and membrane filtration, and biological filtration techniques [31]. The second category includes in-situ chemical removal and in-situ bioconversion using microaeration [32][33][34]. Each individual method has its advantages and disadvantages.…”

Section: Oat Fiber Processing Wastewatermentioning

confidence: 99%

Evaluation of Physical and Chemical Pretreatment Methods to Improve Efficiency of Anaerobic Digestion of Waste Streams from Grain Processing

Satyavolu¹,

Lupitskyy²

2021

Anaerobic Digestion in Built Environments

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Globally, Anaerobic Digestion (AD) industry is booming and biogas, the most sustainable biofuel, produced via AD is in an exponential market growth curve. According to a November 2020 report from US Energy Information Administration (EIA), “25 large dairies and livestock operations in the United States produced a total of about 224 million kWh (or 0.2 billion kWh) of electricity from biogas”. However, the growth of AD and the cost-effective use of the generated biogas are hindered by the inconsistencies (composition, suspended solids, flow rate, etc.) of the incoming waste stream and the associated biogas quality (due to the presence of hydrogen sulfide gas). A pretreatment step prior to an AD unit can promote consistency in the incoming stream, minimize the suspended solids; and thereby insures the efficiency of AD. In this study, we evaluated the method of pretreatment of waste streams from three grain processing industries, where 1) we adjusted the pH of a stream corresponding to its isoelectric point (zero zeta-potential), 2) removed solids (and their corresponding COD) that precipitated, and 3) produced a consistent composition stream to feed the AD process. For grain processing industry, the precipitated solids can be returned to their process – thus integrating the pretreatment with the rest of the process. The pH pre-treatment should not add any additional cost to the plant since the pH of the waste streams from grain processing plant needs to be raised per plant permits prior to disposal. Our lab and pilot AD studies showed a positive effect of such pretreatment on these waste streams in terms of increased biogas production (11–60%) and COD removal (12–60%), and in some instances reduction in H2S content in biogas (8%). This study clearly demonstrated that such a pretreatment method is economical and is effective to improve AD performance on waste waters from grain processing industries.

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In-situ prevention of hydrogen sulfide formation during anaerobic digestion using zinc oxide nanowires

Cited by 24 publications

References 24 publications

Nanomaterials for biogas augmentation towards renewable and sustainable energy production: A critical review

Nanomaterials for biogas augmentation towards renewable and sustainable energy production: A critical review

The effects of engineered nanoparticles on nitrification during biological wastewater treatment

Evaluation of Physical and Chemical Pretreatment Methods to Improve Efficiency of Anaerobic Digestion of Waste Streams from Grain Processing

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