Stability evaluation of compost by respiration techniques in a rotary drum composter

Kalamdhad, Ajay S.; Pasha, Muneer; Kazmi, A.A.

doi:10.1016/j.resconrec.2007.12.003

Cited by 97 publications

(76 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…oxygen uptake rate (OUR) and CO 2 evolution rate were determined according to the Kalamdhad et al (2008).For the determination of CO 2 evolution rate, about 25 g of fresh compost sample was taken in 1 L of polyvinyl chloride airtight container. About 10 g of oven-dried (105°C) soda lime (1.5-2.0 mm mesh size) was taken in a 100-mL beaker and placed in the above container.…”

Section: Analysis Of Physico-chemical and Biological Parametersmentioning

confidence: 99%

“…The container with soda-lime beaker was kept in an incubator at 25°C temperature for 24 h. After 24 h, the soda-lime was taken out and oven dried again; then the final weight was noted down.CO 2 evolution rate was calculated by the following formula Eq. (4) (Kalamdhad et al 2008):…”

Section: Analysis Of Physico-chemical and Biological Parametersmentioning

confidence: 99%

“…During this time, the dissolved O 2 in the suspension was continuously measured by the digital dissolved oxygen meter attached. The oxygen consumption rate was calculated by taking the difference of dissolved oxygen with the respect to the time intervals and calculated value was quoted as the OUR in mg O 2 /g VS/h (Kalamdhad et al 2008).…”

Section: Analysis Of Physico-chemical and Biological Parametersmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of compost quality in agitated pile composting of water hyacinth collected from different sources

Singh

Kalamdhad

2015

Int J Recycl Org Waste Agricult

Self Cite

View full text Add to dashboard Cite

Background Water hyacinth (Eichhornia crassipes) can cause a diversity of problems due to its fast spread and congested growth. The composting of water hyacinth can reduce the chemical fertilizer application to the agricultural field and problems related to its fast growth rate and also help in nutrient recycling. The present study was carried out on agitated pile composting of water hyacinth collected from four different areas (Bharalu River, Agriculture site, Boragaon landfill site and Industrial site). The nutrients and stability parameters were evaluated during the 30 days of agitated pile composting of water hyacinth mixed with cattle manure and sawdust. The stability of compost was evaluated using respiration techniques (CO 2 evolution and oxygen uptake rate). Results Results showed that nutrients (Na, K, Ca, total nitrogen and phosphorus) were increased significantly in all agitated pile composting. Stability parameters such as CO 2 evolution rate and oxygen uptake rate, biochemical chemical oxygen demand and chemical oxygen demand were reduced significantly during the process. Highest reduction of moisture content (35.2 %), volatile solid (40.5 %), ammonical nitrogen (75.6 %), biochemical oxygen demand (65.3 %), CO 2 evolution rate (78.7 %), and oxygen uptake rate (74.4 %) were observed in the agitated pile of Bharalu River site as compared to other agitated piles. The higher increase of total nitrogen (83.5 %) and total phosphorus (76.0 %) was also observed in the agitated pile of Bharalu River site. Conclusion Addition of optimum amount of cattle manure was highly efficient for making compost of water hyacinth collected from four different sites. Highest content of nutrients was found in compost of water hyacinth collected from Bharalu River site due to availability of nutrients in sewage water. In the final compost of all trials, total coliform and fecal coliform were reduced significantly, which are pathogen indicators in the compost. The best compost quality was found in water hyacinth collected from Bharalu River site.

show abstract

Section: Analysis Of Physico-chemical and Biological Parametersmentioning

confidence: 99%

Section: Analysis Of Physico-chemical and Biological Parametersmentioning

confidence: 99%

Section: Analysis Of Physico-chemical and Biological Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of compost quality in agitated pile composting of water hyacinth collected from different sources

Singh

Kalamdhad

2015

Int J Recycl Org Waste Agricult

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to study microbial dynamics and stability, a pilotscale rotary drum composter of 550 L capacity being operated on batch mode operation was used as described in Kalamdhad et al (2008). The capacity of the pilot scale rotary drum composter was decided keeping in view of the capability of a single person who can handle around 150 kg of waste by manual rotation.…”

Section: Rotary Drum Compostermentioning

confidence: 99%

Microbial population, stability and maturity analysis of rotary drum composting of water hyacinth

2014

View full text Add to dashboard Cite

Water hyacinth is a noxious aquatic weed growing over a wide variety of wetland. One of the effective methods of its treatment is rotary drum composting. Hence, microbial succession in the rotary drum composting of water hyacinth was studied along with stability and maturity. Different ratios of water hyacinth, cow dung and sawdust, i.e. 8 : 1 : 1, 7 : 2 : 1, 6 : 3 : 1, 5 : 4 : 1 and 10 : 0 : 0 (control), respectively, were taken. A total weight of 150 kg was maintained. Maximum degradation was observed in the trial 3 (6 : 3 : 1), which showed maximum temperature rise up to 56.5• C. The total mesophilic bacterial count changed from 4.73 × 10 12 to 2.5 × 10 7 colony forming unit (CFU)/g compost during the composting period. Spore forming population reached the highest count of 3.3 × 10 10 CFU/g in the thermophilic phase of composting. Actinomycetes, streptomycetes and fungi counts decreased to about 2.4 × 10 7 CFU/g, 6.5×10 5 CFU/g and 6.79 × 10 5 CFU/g, respectively, at the end of composting period. A maximum reduction of 78.7% in oxygen uptake rate and 90.6% in CO2 evolution rate was observed. This showed the highest stability of the compost sample. But the maximum volatile solids reduction of 45.9% signified the high content of recalcitrant lignocellulosic material. Indicator organisms were reduced to acceptable standards of sanitation.

show abstract

“…The NH 4 values of the final compost indicated an immature compost in Cyl1 due to high ammonia toxicity and a sufficiently stabilised material in Cyl2. Although the Solvita© test is of a rather qualitative nature, it has been shown to correlate fairly well with other stability tests [47,50,51]. The NH 4 test results result were compatible with the difference in the SS to bulking agent ratio between the two mixtures.…”

Section: Compost Stabilitymentioning

confidence: 63%

The Evaluation of Hazards to Man and the Environment during the Composting of Sewage Sludge

et al. 2018

View full text Add to dashboard Cite

Abstract:Composting is considered an effective treatment option to eliminate or substantially reduce potential hazards relating to the recycling of sewage sludge (SS) on land. The variation of four major types of hazards (heavy metals, instability, pathogenic potential and antibiotic resistance) was studied during laboratory-scale composting of two mixtures of sludge and green waste (1:1 and 1:2 v/v). The heavy metal content of the final compost was governed by the initial contamination of SS, with the bulking agent ratio having practically no effect. The composts would meet the heavy metal standards of the United States of America (USA) and the European Union member states, but would fail the most stringent of them. A higher ratio of bulking agent led to a higher stabilisation rate, nitrogen retention and final degree of stability. A good level of sanitisation was achieved for both mixtures, despite the relatively low temperatures attained in the laboratory system. The antibiotic resistance was limited among the E. coli strains examined, but its occurrence was more frequent among the Enterococcus spp. strains. The type of antibiotics against which resistance was mainly detected indicates that this might not be acquired, thus, not posing a serious epidemiological risk through the land application of the SS derived composts.

show abstract

Stability evaluation of compost by respiration techniques in a rotary drum composter

Cited by 97 publications

References 15 publications

Assessment of compost quality in agitated pile composting of water hyacinth collected from different sources

Assessment of compost quality in agitated pile composting of water hyacinth collected from different sources

Microbial population, stability and maturity analysis of rotary drum composting of water hyacinth

The Evaluation of Hazards to Man and the Environment during the Composting of Sewage Sludge

Contact Info

Product

Resources

About