Biochemical methane potential assessment of municipal solid waste generated in Asian cities: A case study of Karachi, Pakistan

Sohoo, Ihsanullah; Ritzkowski, Marco; Heerenklage, J.; Kuchta, Kerstin

doi:10.1016/j.rser.2020.110175

Cited by 49 publications

(63 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…That the results have been better for a SIR1:2, is in accordance with the recommendations of the German VDI standard (Verein Deutscher Ingenieure) 62 . The standard states that the use of a SIR1:2 can better balance the buffer capacity (pH value) and prevent inhibition in the biodegradation process during testing 63 . Similarly, Holliger et al 27 .…”

Section: Resultsmentioning

confidence: 99%

Effect of the co‐digestion of agricultural lignocellulosic residues with manure from South American camelids

Meneses-Quelal

Gaibor‐Chávez

Niño

2021

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

This study aims to evaluate the effects of the co‐digestion of agricultural residues with manure from camelids from the Andean zone. Different combinations of llama manure (LM) and vicuñas (VM) were made with amaranth (AS), quinoa (QS), and wheat (WS) residues. They were fermented using sewage sludge as inoculum. The co‐digestion was evaluated under mesophilic conditions for 40 days. The ratios of volatile substances of substrate / co‐substrate evaluated were 0:100; 25:75; 50:50, 75:25, and 100:0. Two substrate / inoculum ratios (SIR 1:1 and SIR1:2) were also evaluated. The results indicate that the maximum methane accumulation rate is obtained in SIR 1:1 for a VM‐AS ratio (25:75) with 540 mL/g volatile solid (VS). In general, the results did not increase with the increase in inoculum; rather, the tendency to improve methane yield is associated with an increase in the amount of agricultural residues, mainly AS. Regarding the kinetic modeling, the transfer model is the one that best adjusted the predicted values to those observed with an r2 between 0.991 and 0.999, and an RMSE value between 2.06 and 13.62 mL/g (volatile solid) VS. Finally, all the trials presented synergistic effects in their co‐digestion except the digesters formed by LM‐AS, LM‐QS and LM‐WS of SIR 1:2. These presented antagonistic effects in which the addition of the co‐substrate generated competition with the substrates, reducing methane production. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of the co‐digestion of agricultural lignocellulosic residues with manure from South American camelids

Meneses-Quelal

Gaibor‐Chávez

Niño

2021

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

show abstract

“…Environment-polluting waste disposal sites can be successfully transferred to energy generating projects by transforming them into sanitary landfills and equipped with landfill gas (LFG) capturing and power generating infrastructure [20,21]. According to the U.S. Department of Energy (DOE), the usage of waste material as a feedstock for energy and fuel production offers various advantages [22], such as waste material being available at low price, or even offering revenue such as a tipping fee.…”

Section: Figurementioning

confidence: 99%

“…About 40.956 million people (54% of the total urban and 20% of overall Pakistani population) are living in the ten major cities of Pakistan [55]. In recent decades Pakistan has been going through an energy crisis which have has resulted in socio-economic turmoil in the country [20,56].…”

Section: Study Area-pakistanmentioning

confidence: 99%

“…The summary of MSW generation and collection in major cities in Pakistan is given in Table 5. In Pakistan, there is an absence of a proper waste management system for collection to disposal of MSW [14,20,60]. Due to the escalated increase in population, municipal authorities are unable to deal with a huge quantity of waste, resulting in inadequate collection and disposal services.…”

Section: Msw Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Estimation of Methane Production and Electrical Energy Generation from Municipal Solid Waste Disposal Sites in Pakistan

Sohoo

Ritzkowski

Sohu³

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

This work aimed to estimate the annual methane production from the municipal solid waste disposal sites in Pakistan. In this study, the Intergovernmental Panel on Climate Change (IPCC) default methodology was used to estimate theoretical methane formation potential of the waste disposal sites in major cities of Pakistan. The estimates of this study are based on the last population census conducted in the year 2017 and latest available data regarding the waste generation and management practices in the cities considered in the study. Results showed that 31.18 million tonnes of municipal solid waste (MSW) is generated annually. The top 10 major populated cities in Pakistan (with 20% share in country’s population) contributing 31% share in the total quantity of MSW generated in overall country. On average 50–60% of the MSW generated is collected and openly dumped at the designated waste disposal sites. After analyzing the data, we estimate that annually 12.8 MtCO2-eq of methane is emitted from the waste disposal sites in major cities considered in this study. The methane produced from the waste disposal sites can be sustainably utilized as a source of energy through transforming MSW disposal sites (open dumps) to sanitary landfills with methane capturing and utilization facilities. In the present scenario of waste management and methane formation potential, sanitary landfills would generate 62.35 MWh of electric power if 25% of the methane was recovered and utilized in power generation.

show abstract

Green technology for water scarcity: An entrepreneurial business may bring transformation in water management practices

Siddique

Ahmed

Rani

2023

Irrigation and Drainage

View full text Add to dashboard Cite

Despite the contributions of modern business practices to environmentally sustainable transformation, there is not enough information on different types of green technologies and their applications. Therefore, it is essential to identify and classify business models that focus on the management practices of green technology. While the literature on green technology business models has received increasing attention over the last decade, interdisciplinary research into this growing phenomenon is still in its infancy and fragmented. The study focuses on the need for green technology for water management worldwide. Such management practices for green technology represent a research gap in the study area because no one has worked in this field before. There should be research to address people's management practices of green entrepreneurial business. The literature highlights that the issue of water crises may be minimized with the management practices of green entrepreneurial business and by applying global green water treatment techniques. The authors believe that this study would be very beneficial for future research on policymaking based on management practices of green technology that promote environmental sustainability through a green business environment.

show abstract

Biochemical methane potential assessment of municipal solid waste generated in Asian cities: A case study of Karachi, Pakistan

Cited by 49 publications

References 48 publications

Effect of the co‐digestion of agricultural lignocellulosic residues with manure from South American camelids

Effect of the co‐digestion of agricultural lignocellulosic residues with manure from South American camelids

Estimation of Methane Production and Electrical Energy Generation from Municipal Solid Waste Disposal Sites in Pakistan

Green technology for water scarcity: An entrepreneurial business may bring transformation in water management practices

Contact Info

Product

Resources

About