Trace element supplementation in the biogas production from wheat stillage – Optimization of metal dosing

2014 ◽  
Vol 168 ◽  
pp. 80-85 ◽  
Author(s):  
Thomas Schmidt ◽  
Michael Nelles ◽  
Frank Scholwin ◽  
Jürgen Pröter
Keyword(s):  
Trace Element ◽  
Biogas Production

scholarly journals The feasibility of trace element supplementation for stable operation of wheat stillage-fed biogas tank reactors

2011 ◽  
Vol 64 (2) ◽  
pp. 320-325 ◽  
Author(s):  
J. Gustavsson ◽  
B. H. Svensson ◽  
A. Karlsson
Keyword(s):  
Trace Element ◽  
Hydraulic Retention Time ◽  
Loading Rate ◽  
Biogas Production ◽  
Organic Loading Rate ◽  
Stable Operation ◽  
Organic Loading ◽  
Process Stability ◽  
Volatile Solids ◽  
High Sulfate

The aim of this study was to investigate the effect of trace element supplementation on operation of wheat stillage-fed biogas tank reactors. The stillage used was a residue from bio-ethanol production, containing high levels of sulfate. In biogas production, high sulfate content has been associated with poor process stability in terms of low methane production and accumulation of process intermediates. However, the results of the present study show that this problem can be overcome by trace element supplementations. Four lab-scale wheat stillage-fed biogas tank reactors were operated for 345 days at a hydraulic retention time of 20 days (37 °C). It was concluded that daily supplementation with Co (0.5 mg L−1), Ni (0.2 mg L−1) and Fe (0.5 g L−1) were required for maintaining process stability at the organic loading rate of 4.0 g volatile solids L−1 day−1.

scholarly journals Trace Element Supplementation and Enzyme Addition to Enhance Biogas Production by Anaerobic Digestion of Chicken Litter

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3477
Author(s):  
Navodita Bhatnagar ◽  
David Ryan ◽  
Richard Murphy ◽  
Anne-Marie Enright
Keyword(s):  
Anaerobic Digestion ◽  
Trace Element ◽  
Biogas Production ◽  
Positive Control ◽  
Negative Control ◽  
Enzyme Treatment ◽  
Small Scale ◽  
Volatile Solids ◽  
Chicken Litter ◽  
Set Up

Anaerobic digestion (AD) of chicken litter (CL) is a viable alternative to disposal. However, methane yields from this primarily organic waste are quite low when mono-digested. This paper discusses the effect of an enzyme cocktail, trace element (TE) supplementation and selenium (Se) addition in small-scale batch biomethane potential (BMP) assays to enhance the AD of CL. Eleven different assays were set up in triplicate including assays containing only inoculum (blank), only CL (negative control) and cellulose and inoculum (positive control). The results indicate that both enzyme treatment and trace element supplementation enhanced the biogas and methane yield. The highest specific biogas and methane yields were noted for 1% enzyme-treated CL of 835.2 L/kg volatile solids (VS) and 460.8 L/kg VS, respectively. Usually, mono-digestion of CL is low due to high nitrogen content and the presence of recalcitrant lignocellulosic material from the bedding material. Enzyme treatment performed better than the addition of the TE mix and Se.

The valuation of malnutrition in the mono-digestion of maize silage by anaerobic batch tests

2008 ◽  
Vol 58 (7) ◽  
pp. 1453-1459 ◽  
Author(s):  
L. Hinken ◽  
I. Urban ◽  
E. Haun ◽  
I. Urban ◽  
D. Weichgrebe ◽  
...  
Keyword(s):  
Trace Elements ◽  
Anaerobic Digestion ◽  
Trace Element ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Anaerobic Bacteria ◽  
Trace Element Content ◽  
Energy Crops ◽  
Maize Silage ◽  
Batch Tests

Anaerobic digestion is a technology which is used to produce methane from organic solids and energy crops. Especially in recent years, the fermentation of energy crops has become more and more important because of increasing costs for energy and special benefits for renewable energy sources in Germany. Anaerobic bacteria require macro and micro nutrients to grow. Absence of these elements can inhibit the anaerobic process significantly. In particular mono-substrates like maize or certain industrial wastewater often cannot provide all required nutrients. For this reason this research investigates the influence of substrate and trace elements on anaerobic digestion in detail. Different agricultural anaerobic biomasses are analysed with special regard to their trace element content. Based on these results, the influence of three trace elements (iron, cobalt, and nickel) on anaerobic digestion was studied in anaerobic batch tests at different sludge loading rates and for different substrates (maize and acetate). Biogas production was found to be 35% for maize silage and up to 70% higher for acetate with trace element dosage than in the reference reactor.

scholarly journals Impact of trace element addition on biogas production from food industrial waste - linking process to microbial communities

2010 ◽  
Vol 74 (1) ◽  
pp. 226-240 ◽  
Author(s):  
Xin Mei Feng ◽  
Anna Karlsson ◽  
Bo H. Svensson ◽  
Stefan Bertilsson
Keyword(s):  
Microbial Communities ◽  
Trace Element ◽  
Industrial Waste ◽  
Biogas Production ◽  
Element Addition

scholarly journals Vertical nutrient and trace element migration in cambisols after application of residues from anaerobic digestion of manure

2016 ◽  
Author(s):  
M. Sager
Keyword(s):  
Trace Element ◽  
Biogas Production ◽  
Sampling Site ◽  
Column Experiment ◽  
Urban Sewage ◽  
Urban Sewage Sludge ◽  
Set Up ◽  
Element Migration ◽  
Biogas Residue

Abstract. At an alpine grassland cambisol, one site had been intensely fertilized with urban sewage sludge for 10 years of 7.5 tons/ha annually, whereas an adjacent site had been left untreated. A model column experiment was set up to investigate changes of permeabilities and trace element retentions at 0–20 cm and 20–60 cm layers thereof. The particular goal was to monitor losses of nutrients to deeper soil layers or aquifers from biogas residues deposited on site. Residual slurry after biogas production or equivalent amount of water were added on top of the model columns, followed by gradual elution with de-ionized water at amounts of expected rainfall at the sampling site (1000 mm). Long-term sludge treatment changed organic carbon, soil nutrients as well as Ba, Cu, Pb, and Zn significantly, resulting in different vertical migration and elution of applied substances. Differences between the mobilities of P, Fe, S, Cu, B, as well as nitrate and ammonia losses were much more affected by the long-term sludge pretreatment than by the characteristics of the biogas residue or just de-ionized water applied on top of the columns. Largest differences between biogas residue addition and water only were noticed for zinc and ammonia. The addition of iron salts in order to increase sulfide precipitation, had measurable but low effects.

Optimization of mixing ratio of ammoniated rice straw and food waste co-digestion and impact of trace element supplementation on biogas production

2017 ◽  
Vol 20 (2) ◽  
pp. 745-753 ◽  
Author(s):  
Hongqiong Zhang ◽  
Lina Luo ◽  
Wenzhe Li ◽  
Xiangyou Wang ◽  
Yong Sun ◽  
...  
Keyword(s):  
Trace Element ◽  
Rice Straw ◽  
Food Waste ◽  
Biogas Production ◽  
Mixing Ratio

scholarly journals The impact of crude glycerol from biodiesel production and its trace element content on biomethane production in a batch experiment: modelling as a step towards impartial routine comparison of results

2021 ◽  
pp. 11-24
Author(s):  
Sabina Kolbl Repinc ◽  
Leon Deutsch ◽  
Dragiša Savić ◽  
Franci Steinman ◽  
Bojana Danilović ◽  
...  
Keyword(s):  
Trace Element ◽  
Crude Glycerol ◽  
Biogas Production ◽  
Biodiesel Production ◽  
Batch Experiment ◽  
Inorganic Salts ◽  
Lag Phase ◽  
Daily Routine ◽  
Negative Effects ◽  
Biomethane Production

In this study, crude glycerol from the biodiesel industry was tested as a co-substrate in biogas production. To investigate the influence of crude glycerol and the underlying trace element (TE) content on the efficiency of biomethane production, a batch experiment using Automatic Methane Potential Test System (AMPTS II) was carried out. The single addition of crude glycerol significantly contributed only to the total content of K (14.4%), Si (17.3%), and P (11.6%), whereas the contributions of other metals were within the range of other substrates. The addition of crude glycerol increased biomethane production, however, its utilization beyond 1% of total volume resulted in prolonged lag phase and final cessation of biomethane production. The negative effects of inorganic salts present in crude glycerol were reflected in progressively diminishing parts of glycerol and methanol being utilized in its anaerobic digestion, posing serious problems for daily routine use. A nonlinear least square regression analysis was performed to fit the Gompertz, Logistic, Transfer, and Richards models to biomethane production. The most suitable model was the Richards model, exhibiting the best fit to the experimental curves for complex substrates. Glycerol fractions remaining after biodiesel production have to be pre-tested for their negative effects on the content of TEs and inorganic salts, lag phase in biogas production, before they are used as co-substrates in biogas production phase.

scholarly journals Evaluation of biogas production potential of trace element-contaminated plants via anaerobic digestion

2021 ◽  
Vol 208 ◽  
pp. 111598
Author(s):  
Shengxiao Wang ◽  
Jie Wang ◽  
Jianmin Li ◽  
Yanan Hou ◽  
Liang Shi ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Trace Element ◽  
Biogas Production ◽  
Production Potential
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