In-vessel treatment of urban primary sludge by aerobic composting

Rihani, Mohammed; Malamis, Dimitris; Bihaoui, Bouchra; Etahiri, Samira; Loizidou, M.; Assobhei, Omar

doi:10.1016/j.biortech.2010.03.007

Cited by 71 publications

(37 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Table 3 presents the decreases in the DM and OM values that were calculated for all composting reactors. Decreasing DM and OM contents during the composting process have been widely reported and result from the mineralization of the OM by microorganisms (Banegas et al, 2007;Rihani et al, 2010;Tognetti et al, 2006). The DM and OM contents decreased in all composting reactors in this study.…”

Section: Temperaturesupporting

confidence: 55%

Composting of wastewater treatment sludge with different bulking agents

Uçaroğlu

Alkan

2015

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

The main objectives of this study were to investigate the compostability of wastewater treatment sludge (WTS) containing different bulking agents (BAs) and to determine the most efficient BA. Four different compost trials consisting of mixtures of wheat straw (WS), plane leaf (PL), corncob (CC) and sunflower stalk (SS) with WTS were performed in laboratory reactors. In all experiments, a mixture of 60% WTS and 40% BA (wet basis) was used. The temperature, dry matter (DM), organic matter (OM), pH, electrical conductivity (EC) and C/N ratio were monitored during the composting process. Evaluation of the operational parameters showed that the highest organic matter degradation (i.e. 37.6%), loss of dry matter (i.e. 29.6%) and temperature (i.e. 64°C) were achieved for the WTS-CC mixtures. Results also showed that the WTS-SS mixture was also successful in terms of these operational parameters. Use of bulking agents for the treatment of wastewater treatment sludge in composting process is an important issue with regards to process efficiency, economy and disposal of agricultural waste. Corncob and sunflower stalk that were previously not used for the composting of WTS from food industry were shown to be highly successful BA materials in this study.Implications: The compostability of wastewater treatment sludge from the food industry with different bulking agents was studied. Wheat straw, plane leaf, corncob, and sunflower stalk were used as bulking agents. The required microbial stabilization and degree of mineralization were achieved with corncobs and sunflower stalks. PAPER HISTORY

show abstract

Section: Temperaturesupporting

confidence: 55%

Composting of wastewater treatment sludge with different bulking agents

Uçaroğlu

Alkan

2015

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

show abstract

“…Organic matter losses (D OM ) were calculated for ODT-1 (35.0 %), OST-1 (22.7 %), and ODT-2 (21.2 %) (Tables 4, 5). Rihani et al (2010) reported that it was difficult to degrade OP and TS by microorganisms due to the structure of cellulose and lignin content. This is because cellulose provides strength over the cell walls, whereas lignin acts as a protective barrier with impermeability and immunity to prevent an attack from the microorganisms (Loow et al 2015).…”

Section: Organic Matter Contentmentioning

confidence: 99%

“…8 The relationship between mass and volume losses and the ratio of materials used in the mixtures shown to increase due to the loss of mass that occurs during composting. Many works on composting put forth that heavy metal concentrations of raw materials and the type of composting systems were reported to be of great importance (Zorpas and Loizidou 2008;Rihani et al 2010). Fernández et al (2010) determined final Zn and Cu concentrations of 154 and 79 mg kg -1 , respectively, for the composting olive mill wastes (38 %, dry basis), sewage sludge (44 %) with cattail biomass (18 %).…”

Section: Heavy Metal Content Of Compostsmentioning

confidence: 99%

Composting of olive processing wastes and tomato stalks together with sewage sludge or dairy manure

Şevik

Tosun

Eki̇nci̇

2016

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

In this study, composting of olive pomace from three-phase oil production system, sewage sludge, dairy manure, and tomato stalks were carried out. The effects of carbon/nitrogen ratio on decomposition rate of composting were investigated with constant free air spaces of composting mixtures. Composting process was carried out in the aerobic reactors made of stainless steel which were monitored for 32 days. Temperature-controlled feedback system was operated based on the Rutgers strategy. Temperature, moisture, organic matter, pH, electrical conductivity total carbon, total nitrogen, ammonium nitrogen and nitrate nitrogen, total phosphorus as well as potassium were monitored during the composting process. In addition, mass and volume changes of the mixtures were determined. The highest degree of decomposition was determined for the mixture (carbon/nitrogen ratio of 20) based on the dry matter loss where the maximum amount of sewage sludge was used. On the other hand, maximum decomposition occurred at a carbon/nitrogen ratio of 23 for mixtures containing dairy manure. The increase in the use of olive pomace in mixtures had adverse effects on the decomposition process. The stabilization process in the mixture containing dairy manure lasted shorter than the mixtures containing sewage sludge.

show abstract

“…Low initial moisture content of YW is believed to be the reason for having low final moisture content in compost samples. Application of yard waste for reducing compost pile moisture due to its high consumption of moisture content has been reported (Rihani et al 2010). In addition, water contained in the feedstock is consumed during decomposition of organics and consequently the moisture content decreases over time.…”

Section: Resultsmentioning

confidence: 99%

“…Enough potassium (K) content enhances plants' resistance against drought and diseases (Malvi 2011). Hence, NPK content of compost, as a benchmark for compost quality, should be sufficient for plant growth (Rihani et al 2010). All feedstock produced composts with acceptable levels of NPK.…”

Section: Compost Qualitymentioning

confidence: 99%

In-vessel co-composting of yard waste and food waste: an approach for sustainable waste management in Cameron Highlands, Malaysia

Malakahmad

Idrus

Abualqumboz

et al. 2017

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

Purpose Huge amount of yard waste is produced in cities with excessive agricultural activities like Cameron Highlands, Malaysia where most of the time the yard waste is being managed poorly and big portion of it ends in dump sites. Therefore, this study aims to evaluate the applicability of converting yard waste generated in Cameron Highlands Malaysia into high-quality and fast compost via in-vessel method. Methods In-vessel composting technique was applied for speedy biotransformation of yard waste. Addition of food waste, effective microorganisms (EM) and Shimamoto Enzyme Ò (SE) were investigated for improvement of compost quality. Four compositions of feedstock with different yard waste (YW) and food waste (FW) ratios were tested. The compositions were 70%YW ? 30%FW, 80%YW ? 20%FW, 90%YW ? 10%FW and 100%YW. Physicochemical properties of compost including pH, moisture content and C/N ratio were monitored throughout the experiment. Furthermore, quality of compost and its potential for direct application after production were evaluated based on germination index (GI) and nutrient content (NPK). Results The compost samples had pH ranging from 7 to 9 and moisture content of 15.45-32.13%. Initial C/N ratio of all feedstock was decreased throughout the composting process by more than 50%. Seed germination test showed that only 70%YW ? 30%FW feedstock produced immature compost with GI \ 80%. The highest GI of 130% was obtained when FW represented in 10% of the feedstock with addition of EM. Average concentrations of nitrogen, phosphorus and potassium were 1.73, 1.21 and 1.66% in case of EM additive and 1.47, 0.56 and 1.74% in case of SE additive. Conclusion Application of in-vessel composting can improve solid waste management in Cameron Highlands, Malaysia and yield a high-demand product. The approach used in this study can be a good practice for the societies have difficulties in managing their yard waste.

show abstract

In-vessel treatment of urban primary sludge by aerobic composting

Cited by 71 publications

References 30 publications

Composting of wastewater treatment sludge with different bulking agents

Composting of wastewater treatment sludge with different bulking agents

Composting of olive processing wastes and tomato stalks together with sewage sludge or dairy manure

In-vessel co-composting of yard waste and food waste: an approach for sustainable waste management in Cameron Highlands, Malaysia

Contact Info

Product

Resources

About