Characterization of Cotton Gin Byproducts Produced by Various Machinery Groups Used in the Ginning Operation

Holt, Gregory A.; Barker, G. L.; Baker, R. V.; Brashears, A. D.

doi:10.13031/2013.3036

Cited by 26 publications

(6 citation statements)

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“…The traditional management strategies have been to use it for feeding and bedding for the animals or composting, followed by addition to the soil as humus. The presence of microbial pests (verticillium wilt in particular) and pesticide residues, low heating value [19] in energy production limit the recycling options of CGT [12,13]. However, the urgency to lower fossil fuel consumption had the scientists investigating agro-industrial wastes such as CGT as potential renewable energy sources [22].…”

Section: Introductionmentioning

confidence: 99%

Optimizing anaerobic co-digestion of goat manure and cotton gin trash using biochemical methane potential (BMP) test and mathematical modeling

Kaur

Kommalapati

2021

SN Appl. Sci.

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Anaerobic co-digestion is widely adopted to enhance process efficacy by balancing the C/N ratio of the feedstock while converting organic wastes to biomethane. Goat manure (GM) and cotton gin trash (CGT) were anaerobically co-digested in triplicate batch bioreactors. The process was optimized and evaluated utilizing mathematical equations. The liquid fraction of the digestate was analyzed for nitrate and phosphate. The co-digestions with 10 and 20% CGT having the C/N ratios of 17.7 and 19.8 yielded the highest and statistically similar 261.4 ± 4.8 and 262.6 ± 4.2 mL/gvs biomethane, respectively. The biodegradability (BD) of GM and CGT was 94.5 ± 2.7 and 37.6 ± 0.8%, respectively. The BD decreased proportionally with an increase in CGT percentage. The co-digestion having 10% CGT yielded 80–90% of biomethane in 26–39 d. The modified Gompertz model-predicted and experimental biomethane values were similar. The highest synergistic effect index of 15.6 ± 4.7% was observed in GM/CGT; 30:70 co-digestion. The concentration of nitrate and phosphate was lower in the liquid fraction of digestate than the feedstocks, indicating that these nutrients stay in the solid fraction. The results provide important insights in agro-waste management, further studies determining the effects of effluent application on plants need to be conducted.

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Section: Introductionmentioning

confidence: 99%

Optimizing anaerobic co-digestion of goat manure and cotton gin trash using biochemical methane potential (BMP) test and mathematical modeling

Kaur

Kommalapati

2021

SN Appl. Sci.

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“…ney on dispos ude as a sour t of transparen g states, 2018-r, leaving behi ale of cotton y growing US sta on cultivar an ed, and it is m .9%), motes (2 ave been to us umus. The pre Holt, 2006) in . The proper di sing of CGT ( ce of micro a nt plastics (Haq -2020 Vol.…”

Section: Introductionmentioning

confidence: 99%

Effect of Inoculum Concentration and Pretreatment on Biomethane Recovery From Cotton Gin Trash

Kaur¹,

Kommalapati²

2021

JAS

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The potential of cotton gin waste, a considerable challenge to the gin owners, has not been fully investigated as a renewable energy source via anaerobic digestion. The weathered cotton gin trash and inoculum for triplicate biomethane potential assays were obtained from a local cotton gin mill and a municipal wastewater treatment plant, respectively. The moisture, total solids, volatile solids, and C, H, N, S, hemicellulose + cellulose, and lignin contents of gin waste were determined in triplicates. The biomethane potential of untreated and pretreated (hot water and 6% NaOH (wet CGT weight basis) gin waste was determined at different inoculum to substrate ratios. The highest cumulative biomethane yield of 111.8 mL gvs-1 was observed in inoculum to substrate ratio of 2.3, and it was statistically similar to the values; 101.8, 104.7, 100.5, and 108.9 gvs-1, observed in 0.8, 1.2, 1.5, and 1.9, respectively. The biomethane yield at the inoculum to substrate ratio of 0.4 was significantly lower than all higher ratios. The T80-90 for biomethane production was 26-30 for the ISRs of 1.2, 1.5, and 2.3. The T80-90 for inoculum to substrate ratios of 0.4, 0.8, and 1.9 were 26-31, 27-32, and 27-31 d, respectively. The modified Gompertz equation fitted very well (R2 = 0.98-0.99) to the anaerobic digestion at all inoculum to substrate ratios and pretreatments as the observed and predicted biomethane values were similar. The model predicted a lag phase of 8-10 days for control and treatments compared to the observed of 10-15 days. The highest biodegradability of 24.8±2.6% was observed at inoculum to substrate ratio of 2.3, which was statistically similar to the values observed in ratios of 0.8, 1.2, 1.5, and 1.9, respectively. Among pretreatments, the highest biodegradability of 33.0±2.4 was observed in 6% NaOH pretreatment, and it was statistically similar to hot water treatment and non-pretreated or control. These research findings advance the knowledge in the anaerobic degradation of cotton gin trash, thus helping to maximize biomethane recovery from this agro-industrial waste.

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“…Similarly, [3] noted that approximately 0.61-1.49 million tons of cotton gin "trash" was generated annually in the Texas high plains between 2001 and 2006. Other studies have reported similar proportions and yields per bale of cotton gin byproducts generated from ginning processes from several top cotton-producing regions [4][5][6].…”

Section: Introductionmentioning

confidence: 94%

“…Although there was insufficient statistical evidence to show that the differences in the ash contents of FCGB and CCGB samples were significant, it should be noted that the FCGB samples generally contained less ash matter than the CCGB samples from all the locations sampled in this study (Figure 1). Another study [6] showed that the ash contents of CGB are greatly influenced by the harvesting method and the number/type of equipment used in the ginning process. The same study showed that the amount of byproducts generated from the inclines and unloading systems contribute up to 36% of the total CGB generated, and the average ash content of CGB decreased by more than 50% without both equipment/systems.…”

Section: Dry Matter/moisture and Ashmentioning

confidence: 99%

Forage Properties of Fresh and Composted Cotton Gin Byproducts as Feed Supplements

Alege,

Donohoe,

Tumuluru

et al. 2023

AgriEngineering

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Cotton ginning generates millions of tons of byproducts every year. If not properly managed, these materials become waste, which may constitute significant environmental, economic, and logistical issues. The objectives of this study were to characterize fresh and composted cotton gin byproducts (CGBs) for utilization as animal feed supplements and investigate the effects of composting on the forage properties. The study analyzed and compared the nutrients and energy contents of fresh and composted CGB from four commercial cotton gins in Arkansas, Mississippi, Missouri, and Tennessee states, USA. The results suggest that composting CGB may result in more than a 47% increase in fiber and crude protein and at least a 25% decrease in total digestible nutrients and net energy estimations. The differences in macro- and micro-nutrient contents and feed properties suggest that composting CGB may improve the potential for utilization as an animal feed supplement. Establishing the forage properties of CGB is crucial for determining animal feed formulations using CGB as supplements.

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Characterization of Cotton Gin Byproducts Produced by Various Machinery Groups Used in the Ginning Operation

Cited by 26 publications

References 0 publications

Optimizing anaerobic co-digestion of goat manure and cotton gin trash using biochemical methane potential (BMP) test and mathematical modeling

Optimizing anaerobic co-digestion of goat manure and cotton gin trash using biochemical methane potential (BMP) test and mathematical modeling

Effect of Inoculum Concentration and Pretreatment on Biomethane Recovery From Cotton Gin Trash

Forage Properties of Fresh and Composted Cotton Gin Byproducts as Feed Supplements

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