Evolution of enzyme activities during composting of tobacco waste

Kayikçioğlu, Hüseyin Hüsnü; Okur, Nur

doi:10.1177/0734242x10392813

Cited by 25 publications

(23 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…FS reached the maximum value, 19,106 (μg TPF g dry matter −1 ) after 10 days corresponding to the peaks of temperature and OUR. The maximum value, 18,815 (μg TPF g dry matter −1 ) for FP observed at 16 days at the end of the thermophilic phase or the beginning of the mesophilic stage is similar to the results of Kayikçioğlu and Okur (2011) and Bernal et al (2009). Vargas-Garcia et al (2010) stated that the higher dehydrogenase activity values were related to the higher microbial activity and large account of mesophilic and thermophilic bacteria and lower dehydrogenase activity values associated with the maturation phase.…”

Section: Enzyme Activitiessupporting

confidence: 74%

“…The highest pH was observed after 8 days for FS and after 16 days for FP compost. This delay for FP compost could be due to the loss of ammonium through volatilization and nitrification, and accumulation of organic acid and CO 2 during decomposition of the simple organic matter like carbohydrates (Banegas et al 2007;Chukwujindu et al 2006;Kayikçioğlu and Okur 2011). Compost with low pH indicates lack of maturity due to the short composting time or occurrence of the anaerobic process (Iglesias Jiménez and Perez Garcia 1989).…”

Section: Ph and Electrical Conductivity (Ec)mentioning

confidence: 99%

“…Dehydrogenase is an enzyme belonging to the oxidoreductase group which catalyzes the oxidation of organic substances (Kayikçioğlu andOkur 2011). Bernal et al (2009) used dehydrogenase activity to monitor the composting process.…”

Section: Enzyme Activitiesmentioning

confidence: 99%

See 2 more Smart Citations

Performance of locally available bulking agents in Newfoundland and Labrador during bench-scale municipal solid waste composting

et al. 2014

View full text Add to dashboard Cite

Background: Newfoundland and Labrador (NL) has one of the highest waste disposal rates in Canada and it has 200 small communities without access to central composting facilities. During Municipal solid waste (MSW) composting, the selection of bulking agents is critical. Bench-scale composting systems plus locally available bulking agents are thus desired for economic and effective MSW management in NL communities. This study evaluated the performance of locally available bulking agents (i.e., NL sawdust and peat) during MSW composting in a bench-scale system. Physiochemical (temperature, oxygen uptake rate, pH, electrical conductivity, moisture and ash content, and C/N ratio) and biological (enzyme activities and germination index) parameters were monitored to evaluate compost maturity and stability. Results: In peat composting, higher temperature for a longer duration was observed, indicating more effective pathogen removal and sterilization. High enzyme activities of dehydrogenase, β-glucosidase, and phosphodiesterase in the third week of composting imply high microbial activity and high decomposition rate. The low C/N ratio for compost product implies acceptable stability states. In sawdust composting, higher temperature and oxygen uptake rate (OUR) were observed in the third week of composting, and higher enzyme activities in the second week. Sawdust composting generated a higher germination index, indicating higher maturity. Conclusions: Both sawdust and peat are effective bulking agents for the bench-scale composting. The choice of a bulking agent for a particular community depends on the availability of the agent and land in the region, convenience of transportation, price, and the expected quality of the compost product.

show abstract

Section: Enzyme Activitiessupporting

confidence: 74%

Section: Ph and Electrical Conductivity (Ec)mentioning

confidence: 99%

See 1 more Smart Citation

Performance of locally available bulking agents in Newfoundland and Labrador during bench-scale municipal solid waste composting

et al. 2014

View full text Add to dashboard Cite

show abstract

“…If the final compost has this range of salts, it can be harmful to use it as a fertilizer in saltsensitive crops or saline and alkaline soils (Kayikçioğlu & Okur, 2011).…”

Section: Resultsmentioning

confidence: 99%

“…According to Kayikçioğlu and Okur (2011), in tobacco waste compost the conductivity declined in 32 and 46% in the final composts.…”

Section: Physical and Chemical Characterization Of The Evolution Of Tmentioning

confidence: 99%

<b>Treatment of organic solid waste generated at agricultural research corporation via composting under natural and controlled conditions

et al. 2018

View full text Add to dashboard Cite

ABSTRACT. The study of composting technique becomes relevant to management of organic waste generated in an undertaking agricultural research. Therefore, this paper aimed to evaluate the efficiency of stabilization of organic matter in two composting systems: controlled (plowings and irrigations fortnightly) and natural. It has been tested two piles (controlled and natural) during 120 days in four treatments: soy straw (T1), wheat straw (T2), tree pruning (T3), mixture of soy and wheat straw and tree pruning (T4) with organic residues from the recycling program + soybeans. There was monitoring of temperature, moisture, pH, electrical conductivity (EC), C, N, C/N ratio and reduction of mass and volume. In the controlled treatments, the thermophilic phase was lower, the moisture was in the ideal ratio for the process (with lower values in the natural treatments), and there was a decrease of 3-4 times of the values of EC and the higher reductions of mass and volume. In all treatments, the values of pH were neutral and the C/N ratio declined 37-50%, assuming final values of matured composts. It has been concluded that regardless of mixtures of waste, the controlled treatments, in the period of 120 days, were more efficient in stabilize the organic material.Keywords: organic residues from the recycling program, soybeans, wheat straw, soybean straw, pruning trees.Tratamento de resíduos sólidos orgânicos gerados em instituto de pesquisa agropecuária via compostagem em condições natural e controlada RESUMO. O estudo da técnica de compostagem se torna relevante para gestão dos resíduos orgânicos gerados em um empreendimento de pesquisa agropecuária. Sendo assim, este trabalho objetivou avaliar a eficiência da estabilização da matéria orgânica em dois sistemas de compostagem: controlado (revolvimentos e irrigação quinzenalmente) e natural. Foram testadas duas leiras (controlada e natural) durante 120 dias em quatro tratamentos: palha de soja (T1), palha de trigo (T2), poda de árvore (T3) mistura de palhas de soja e trigo com poda de árvore (T4) com resíduos orgânicos da coleta seletiva + grãos de soja. Monitorou-se temperatura, umidade, pH, condutividade elétrica (CE), C, N, relação C/N e redução de massa e volume. Nos tratamentos controlados a fase termófila foi menor, a umidade esteve na faixa ideal para o processo (valores abaixo nos naturais), houve diminuição de três a quatro vezes dos valores de CE e as maiores reduções de massa e volume. Em todos os tratamentos os valores de pH foram neutros e houve redução de 37 a 50% da relação C/N, assumindo valores finais de compostos maturados. Conclui-se que, independente da mistura de resíduos, os tratamentos controlados no período de 120 dias, foram mais eficientes em estabilizar a matéria orgânica.Palavras-chave: resíduos orgânicos da coleta seletiva, grãos de soja, palha de trigo, palha de soja, poda de árvores.

show abstract

A review on composting of oil palm biomass

Vakili

Rafatullah

Ibrahim

et al. 2014

Environ Dev Sustain

View full text Add to dashboard Cite

Nowadays, the biomass produced in oil palm industry, such as oil palm fronds, palm pressed fibers, palm kernel shells, empty fruit bunch, and liquid waste discharged from the palm oil mill effluent and others, may lead to significant environmental concerns. The quantity of produced wastes by oil palm industry is increasing with the growth of this industry day by day. Therefore, the use of these wastes as compost is considered by researchers to overcome their negative impacts and recycle them to produce a useful byproduct for agriculture. This review analyzes the recent composting studies on palm oil biomass and provides useful information about the potential uses of these biomass in composting as an alternative method for enhanced and sustainable use of biomass produced from oil palm industry. In addition, environmental impacts of composting are discussed. This knowledge could build a platform for researchers in this area to understand the recent developments in palm oil biomass composting by means of addressing the environmental pollution concerns as well.

show abstract

Evolution of enzyme activities during composting of tobacco waste

Cited by 25 publications

References 34 publications

Performance of locally available bulking agents in Newfoundland and Labrador during bench-scale municipal solid waste composting

Performance of locally available bulking agents in Newfoundland and Labrador during bench-scale municipal solid waste composting

<b>Treatment of organic solid waste generated at agricultural research corporation via composting under natural and controlled conditions

A review on composting of oil palm biomass

Contact Info

Product

Resources

About