Potential and constraints of composting domestic solid waste in developing countries: findings from a pilot study in Dar es Salaam, Tanzania

Mbuligwe, Stephen E.; Kassenga, Gabriel; Kaseva, M.E.; Chaggu, E.J.

doi:10.1016/s0921-3449(02)00009-5

Cited by 43 publications

(26 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2, 3, 4. These figures indicate that all runs showed the general temperature-time pattern of a composting pile and were mostly in the thermophilic range with a maximum pile temperature of about 65°C, which is in agreement with values reported in literature (Mbuligwe et al 2002;Weppen 2001). Close examination of the figures reveals that the indoor piles (Fig.…”

Section: Temperature-time Historysupporting

confidence: 90%

Evaluating composting and co-composting kinetics of various agro-industrial wastes

Qdais

Al‐Widyan

2016

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

Purpose Agro-industrial wastes are posing serious challenges for the agro-industries. Composting and co-composting of such wastes will lead to converting such wastes into a useful product that will serve as a soil conditioner. The present research investigated the kinetics of composting and co-composting of several agro-industrial wastes. Methods Seven pilot scale composting and co-composting piles of substrates from grain dust (GD), coffee-processing waste (CPW) and olive mill waste (OMW) were tested. Temperature and moisture content of the piles were monitored during the composting process and adjusted whenever necessary. Results The biodegradation kinetics was found to be of first order for all composting and co-composting piles. As judged by the value of the reaction rate constant, and the temperature of the piles, the biodegradability of the grain dust was the highest among all composting piles, followed by the coffee-processing residue and finally the fresh olive mill waste. As for the co-composting, the highest degradability was noticed in the pile that was composed of grain dust and coffee-processing waste followed by that of grain dust mixed with dry olive mill waste, and then followed by coffee-processing waste and dry olive mill waste and finally by grain dust with fresh olive-processing waste. Conclusions Composting and co-composting of agro-industrial wastes is a low cost and an environmentally friendly waste management option for solving the problem of the disposal of such waste. The study revealed that all piles followed first-order kinetics with different biodegradability rates.

show abstract

Section: Temperature-time Historysupporting

confidence: 90%

Evaluating composting and co-composting kinetics of various agro-industrial wastes

Qdais

Al‐Widyan

2016

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

show abstract

“…The black colour (T1 and T2) and dark brown (T3) of composts obtained should be due to the presence of humus contained resulting from the total mineralisation of co-compost materials, also indicating their maturity. Indeed, Mbuligwe et al (2002), characterise mature co-compost by its deep black colour, while the World Health Organization characterizes it by it black or dark brown colour.…”

Section: Effect Of Plant Materials and Sewage Sludge Ratio On The Matumentioning

confidence: 99%

“…In fact, all these parameters are taken into considerations by several authors (Olufunké et al, 2009; Mbuligwe et al, 2002).…”

Section: Heavy Metals and Helminth Eggs Content Of Cocomposts Obtainedmentioning

confidence: 99%

Co-composting of sewage sludge and Echinochloa pyramidalis (Lam.) Hitchc. Chase plant material from a constructed wetland system treating domestic wastewater in Cameroon

Wafo¹,

Nguemte²,

Nzouebet³

et al. 2016

Afr. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Trials were conducted at the Cité-Verte domestic wastewater treatment station (Yaoundé-Cameroon) in order to assess the effect of three sewage sludge: Macrophyte ratios on the co-composting process and compost quality. The ratios were T1: 25 kg of plant material (Echinochloa pyramidalis) and 75 kg sludge; T2: 50 kg of plant material and 50 kg sludge, and T3: 75 kg of plant material and 25 kg of sludge. The assessment parameters of the co-composting process included the daily evolution of temperature, the pH and water content for each month. The quality of the mature compost obtained was analysed based on their C/N ratio, Ca, Mg, P, K, trace elements and helminth eggs content. During cocomposting, maximum temperatures ranged from 45.3 ± 4.7°C (T1) to 70.77 ± 2.76°C (T3). Mature cocompost was obtained after 3 months (T1), 4 months (T2) and 5 months (T3). Mean pH and C/N ratio of co-composts respectively ranged from 7.26 to 7.62 and from 10 to 15. In mature compost, the average values of organic matter, N and P respectively were 3323 ± 405 mg/kg, 165 ± 32 mg/kg and 36 ± 5 mg/kg for T1; 2945 ± 128 mg/kg, 152 ± 30 mg/kg and 27 ± 6 mg/kg for T2; and 228 ± 103 mg/kg, 105 ± 48 mg/kg and 7 ± 1 mg/kg for T3. K content was 1 mg/kg in all three co-composts. Heavy metals were found at trace levels. Helminth eggs concentration in compost was 0.2 ± 0.03 egg/g (T1), 0.1 ± 0.02 egg/g (T2) and 0.007 ± 0.01 egg/g (T3). All these co-composts did not present a significant hygienic risk with regards to WHO guidelines (2006) for safe reuse of faecal matter or faecal sewage in agriculture (less than 1 egg/g TS). For a given amount of plant harvested, it was concluded that the quickest way to produce a compost safe of parasites will be to mix them with 3/4 of sludge from the digestion tank.

show abstract

“…However, although successful experiences have been reported in its application (Mbuligwe et al, 2002;Zurbrügg et al, 2005, Bezama et al, 2007 it is acknowledged that there are important limitations (Zurbrügg et al, 2005, Barreira et al, 2006, Körner et al, 2008. Dulac (2001) pointed out that the high organic content of the waste streams of developing countries is ideal for composting, but municipal services operators do not have enough and adequate information and even though they may be familiar with the application of composting in agriculture, it is not considered as a way to solve their urban wastes problems.…”

Section: Compostingmentioning

confidence: 99%

“…This position has been promoted in international events such as the Johannesburg Summit on Sustainable Development, in which the recycling and reuse of waste were identified as key strategies for the accomplishment of the main objectives and essential requisites for a sustainable development, since it contributes to reduce the negative effects on the environment and increases the efficiency of the use of resources (United Nations, 2002). From this perspective, there are notable efforts made in developing countries such as Tanzania (Mbuligwe et al, 2002), Colombia (Minambiente, 2002) and Botswana (Ketlogetswe & Mothudi, 2005), where policies that give priority to recycling immediately after source reduction have been enforced; however, the application level of these policies is variable and final disposal on the land still remains as the primary option with significant application (Fricke et al, 2001;OPS, 2005;UNEP, 2008).…”

Section: Introductionmentioning

confidence: 99%

Perspectives for Sustainable Resource Recovery from Municipal Solid Waste in Developing Countries: Applications and Alternatives

Marmolejo¹,

Dı́az²,

Torres³

et al. 2012

Waste Management - An Integrated Vision

View full text Add to dashboard Cite

Potential and constraints of composting domestic solid waste in developing countries: findings from a pilot study in Dar es Salaam, Tanzania

Cited by 43 publications

References 1 publication

Evaluating composting and co-composting kinetics of various agro-industrial wastes

Evaluating composting and co-composting kinetics of various agro-industrial wastes

Co-composting of sewage sludge and Echinochloa pyramidalis (Lam.) Hitchc. Chase plant material from a constructed wetland system treating domestic wastewater in Cameroon

Perspectives for Sustainable Resource Recovery from Municipal Solid Waste in Developing Countries: Applications and Alternatives

Contact Info

Product

Resources

About