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Mr. Ihsanullah Sohoo
Institute of Environmental Technology and Energy Economics, Sustainable Resource and Waste Management, Hamburg University of Technology

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Research Keywords & Expertise

0 Landfill
0 Waste Disposal
0 Waste to Energy
0 waste management and disposal
0 Sustainable waste management

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Short Biography

Research assistant and PhD fellow at Sustainable Resource and Waste Management research group of Institute of Environmental Technology and Energy Economics at Hamburg University of Technology, Hamburg, Germany.

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Journal article
Published: 15 June 2021 in Sustainability
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Pakistan is facing a severe energy crisis due to its heavy dependency on the import of costly fossil fuels, which ultimately leads to expansive electricity generation, a low power supply, and interruptive load shedding. In this regard, the utilization of available renewable energy resources within the country for production of electricity can lessen this energy crisis. Livestock waste/manure is considered the most renewable and abundant material for biogas generation. Pakistan is primarily an agricultural country, and livestock is widely kept by the farming community, in order to meet their needs. According to the 2016–2018 data on the livestock population, poultry held the largest share at 45.8%, followed by buffaloes (20.6%), cattle (12.7%), goats (10.8%), sheep (8.4%), asses (1.3%), camels (0.25%), horses (0.1%), and mules (0.05%). Different animals produce different amounts of manure, based upon their size, weight, age, feed, and type. The most manure is produced by cattle (10–20 kg/day), while poultry produce the least (0.08–0.1 kg/day). Large quantities of livestock manure are produced from each province of Pakistan; Punjab province was the highest contributor (51%) of livestock manure in 2018. The potential livestock manure production in Pakistan was 417.3 million tons (Mt) in 2018, from which 26,871.35 million m3 of biogas could be generated—with a production potential of 492.6 petajoules (PJ) of heat energy and 5521.5 MW of electricity. Due to its favorable conditions for biodigester technologies, and through the appropriate development of anaerobic digestion, the currently prevailing energy crises in Pakistan could be eliminated.

ACS Style

Muhammad Khan; Muhammad Ahmad; Muhammad Sultan; Ihsanullah Sohoo; Prakash Ghimire; Azlan Zahid; Abid Sarwar; Muhammad Farooq; Uzair Sajjad; Peyman Abdeshahian; Maryam Yousaf. Biogas Production Potential from Livestock Manure in Pakistan. Sustainability 2021, 13, 6751 .

AMA Style

Muhammad Khan, Muhammad Ahmad, Muhammad Sultan, Ihsanullah Sohoo, Prakash Ghimire, Azlan Zahid, Abid Sarwar, Muhammad Farooq, Uzair Sajjad, Peyman Abdeshahian, Maryam Yousaf. Biogas Production Potential from Livestock Manure in Pakistan. Sustainability. 2021; 13 (12):6751.

Chicago/Turabian Style

Muhammad Khan; Muhammad Ahmad; Muhammad Sultan; Ihsanullah Sohoo; Prakash Ghimire; Azlan Zahid; Abid Sarwar; Muhammad Farooq; Uzair Sajjad; Peyman Abdeshahian; Maryam Yousaf. 2021. "Biogas Production Potential from Livestock Manure in Pakistan." Sustainability 13, no. 12: 6751.

Journal article
Published: 25 April 2021 in Energies
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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.

ACS Style

Ihsanullah Sohoo; Marco Ritzkowski; Zubair Sohu; Senem Cinar; Zhi Chong; Kerstin Kuchta. Estimation of Methane Production and Electrical Energy Generation from Municipal Solid Waste Disposal Sites in Pakistan. Energies 2021, 14, 2444 .

AMA Style

Ihsanullah Sohoo, Marco Ritzkowski, Zubair Sohu, Senem Cinar, Zhi Chong, Kerstin Kuchta. Estimation of Methane Production and Electrical Energy Generation from Municipal Solid Waste Disposal Sites in Pakistan. Energies. 2021; 14 (9):2444.

Chicago/Turabian Style

Ihsanullah Sohoo; Marco Ritzkowski; Zubair Sohu; Senem Cinar; Zhi Chong; Kerstin Kuchta. 2021. "Estimation of Methane Production and Electrical Energy Generation from Municipal Solid Waste Disposal Sites in Pakistan." Energies 14, no. 9: 2444.

Journal article
Published: 05 February 2021 in Science of The Total Environment
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Sustainable completion of municipal solid waste landfills requires post-closure care after a time when utilization of landfill gas produced from biodecomposition of organic waste be not possible/or economically feasible. Research proved that in-situ aeration is a promising approach employed for landfill aftercare. The application of post aeration operation is targeted to achieve accelerated waste stabilization to avoid long term environmental and public health impacts from landfills. In in-situ aeration operation, consumption of supplied oxygen has significant influence on biological stabilization of solid waste placed in the landfills. The consumption of oxygen is regulated by operation parameters of landfill – one of the important is presence of moisture in landfill ecosystem. This research aims to assess the influence of moisture content and leachate recirculation on the oxygen consumption during post aeration phase of landfill operation. The effect of oxygen consumption on the extent of waste stabilization achieved after experiment was also assessed. Three lab-scale landfill simulation reactors (LSRs) were used – in two of three reactors (LSR-1 and LSR-3) operation was carried out in two phases: Anaerobic and post-aeration. One reactor (LSR-2) was operated under anaerobic condition throughout the experiment and used as control. To compare the oxygen consumption, conventional landfill (CLF) conditions without excess water addition and leachate recirculation were simulated in LSR-1 and the bioreactor landfill conditions (BRLF) with excess water injection and leachate recirculation were simulated in LSR-3. In CLF 46.4% of supplied oxygen was consumed during post aeration phase while in BRLF only 0.96% of oxygen consumption was noticed. In result of higher oxygen consumption, biostabilization rate of waste in CLF was 7% higher than BRLF at the end of experiment. This study demonstrated that, in presence of low moisture in landfill ecosystem optimal air distribution can be realized which results in enhanced waste oxidization and stabilization.

ACS Style

Ihsanullah Sohoo; Marco Ritzkowski; Kerstin Kuchta. Influence of moisture content and leachate recirculation on oxygen consumption and waste stabilization in post aeration phase of landfill operation. Science of The Total Environment 2021, 773, 145584 .

AMA Style

Ihsanullah Sohoo, Marco Ritzkowski, Kerstin Kuchta. Influence of moisture content and leachate recirculation on oxygen consumption and waste stabilization in post aeration phase of landfill operation. Science of The Total Environment. 2021; 773 ():145584.

Chicago/Turabian Style

Ihsanullah Sohoo; Marco Ritzkowski; Kerstin Kuchta. 2021. "Influence of moisture content and leachate recirculation on oxygen consumption and waste stabilization in post aeration phase of landfill operation." Science of The Total Environment 773, no. : 145584.

Review
Published: 02 January 2021 in Processes
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In the biogas plants, organic material is converted to biogas under anaerobic conditions through physical and biochemical processes. From supply of the raw material to the arrival of the products to customers, there are serial processes which should be sufficiently monitored for optimizing the efficiency of the whole process. In particular, the anaerobic digestion process, which consists of sequential complex biological reactions, requires improved monitoring to prevent inhibition. Conventional implemented methods at the biogas plants are not adequate for monitoring the operational parameters and finding the correlation between them. As Artificial Intelligence has been integrated in different areas of life, the integration of it into the biogas production process will be inevitable for the future of the biogas plant operation. This review paper first examines the need for monitoring at the biogas plants with giving details about the process and process monitoring as well. In the following sections, the current situation of implementations of Artificial Intelligence in the biogas plant operation and in the similar industries will be represented. Moreover, considering that all the information gathered from literature and operational needs, an implementation model will be presented.

ACS Style

Samet Cinar; Senem Onen Cinar; Nils Wieczorek; Ihsanullah Sohoo; Kerstin Kuchta. Integration of Artificial Intelligence into Biogas Plant Operation. Processes 2021, 9, 85 .

AMA Style

Samet Cinar, Senem Onen Cinar, Nils Wieczorek, Ihsanullah Sohoo, Kerstin Kuchta. Integration of Artificial Intelligence into Biogas Plant Operation. Processes. 2021; 9 (1):85.

Chicago/Turabian Style

Samet Cinar; Senem Onen Cinar; Nils Wieczorek; Ihsanullah Sohoo; Kerstin Kuchta. 2021. "Integration of Artificial Intelligence into Biogas Plant Operation." Processes 9, no. 1: 85.

Journal article
Published: 25 December 2020 in Sustainability
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Sustainable management of municipal solid waste is one of the major challenges for authorities in developing countries. Current waste disposal methods in Pakistan and other developing countries are not meeting standards of any proper waste management system opted for in the developed world. This mismanagement of waste is leading to serious environmental problems at local as well as global levels. This study aims to investigate the methane emissions from waste dumpsites in the city of Karachi, Pakistan, and to propose an effective approach to enhance their environmental sustainability. The methane emissions from waste disposal sites were assessed by simulating four different landfill situations during the landfill simulation reactor experiment. The residual methane reduction potential of each waste disposal approach was assessed by a biochemical methane test of waste after the experiment. It is estimated that in the present situation, about 11,500 tons of CO2-eq methane is released annually from waste disposal sites in Karachi. The convectional anaerobic landfill with methane capturing facilities and post-aeration operation was found to be the most environmentally sustainable approach with controlling 65% of residual methane emissions in comparison with the present scenario. For the development of new landfill sites, we recommend the bioreactor landfill approach with methane recovery and post-care (in-situ aeration).

ACS Style

Ihsanullah Sohoo; Marco Ritzkowski; Kerstin Kuchta; Senem Cinar. Environmental Sustainability Enhancement of Waste Disposal Sites in Developing Countries through Controlling Greenhouse Gas Emissions. Sustainability 2020, 13, 151 .

AMA Style

Ihsanullah Sohoo, Marco Ritzkowski, Kerstin Kuchta, Senem Cinar. Environmental Sustainability Enhancement of Waste Disposal Sites in Developing Countries through Controlling Greenhouse Gas Emissions. Sustainability. 2020; 13 (1):151.

Chicago/Turabian Style

Ihsanullah Sohoo; Marco Ritzkowski; Kerstin Kuchta; Senem Cinar. 2020. "Environmental Sustainability Enhancement of Waste Disposal Sites in Developing Countries through Controlling Greenhouse Gas Emissions." Sustainability 13, no. 1: 151.

Journal article
Published: 07 August 2020 in Renewable and Sustainable Energy Reviews
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Municipal solid waste (MSW) generation rate in Asian cities is exponentially increasing with rise in urbanization and commercial activities. Beside this, the cities in developing Asia are deficient in adequate waste management and facing energy shortage as well. The ineffectual waste management practice is one of the main causative factors behind the negative repercussions on public health and environment. This paper provides an estimation of power generation potential along with economic and environmental benefits of biochemical methane production from MSW. The biochemical methane potential (BMP) test of the MSW generated in Karachi, Pakistan was conducted by using the fresh synthetic waste sample. Through the analysis of the results obtained in this study and available data of the MSW generation (quantity, organic fraction and moisture content) in Karachi it is estimated that, every year about 5600 tons of methane are being wasted to atmosphere adding enormous share in global climate change. This study estimated that, about 63 MWe electric power can be generated by establishing biowaste digestion plants with power generation facilities in the city. The generated power can contribute 2.1% share in daily power supply and 21% power shortage can be reduced as well. Additionally, about 401.3 million-PKRs (2.6 million-US$) revenue can be earned every year by selling the power generated by utilizing the MSW in waste to energy plants. Moreover, 0.13 Mt CO2-eq/annum greenhouse effect caused by methane emissions from open disposal of MSW can be eliminated.

ACS Style

Ihsanullah Sohoo; Marco Ritzkowski; Jörn Heerenklage; Kerstin Kuchta. Biochemical methane potential assessment of municipal solid waste generated in Asian cities: A case study of Karachi, Pakistan. Renewable and Sustainable Energy Reviews 2020, 135, 110175 .

AMA Style

Ihsanullah Sohoo, Marco Ritzkowski, Jörn Heerenklage, Kerstin Kuchta. Biochemical methane potential assessment of municipal solid waste generated in Asian cities: A case study of Karachi, Pakistan. Renewable and Sustainable Energy Reviews. 2020; 135 ():110175.

Chicago/Turabian Style

Ihsanullah Sohoo; Marco Ritzkowski; Jörn Heerenklage; Kerstin Kuchta. 2020. "Biochemical methane potential assessment of municipal solid waste generated in Asian cities: A case study of Karachi, Pakistan." Renewable and Sustainable Energy Reviews 135, no. : 110175.

Journal article
Published: 01 January 2019 in Detritus
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ACS Style

Ihsanullah Sohoo; Marco Ritzkowski; Kerstin Kuchta. EVALUATION OF BEHAVIOR OF WASTE DISPOSAL SITES IN KARACHI, PAKISTAN AND EFFECTS OF ENHANCED LEACHING ON THEIR EMISSION POTENTIAL. Detritus 2019, ume 07 - S, 1 .

AMA Style

Ihsanullah Sohoo, Marco Ritzkowski, Kerstin Kuchta. EVALUATION OF BEHAVIOR OF WASTE DISPOSAL SITES IN KARACHI, PAKISTAN AND EFFECTS OF ENHANCED LEACHING ON THEIR EMISSION POTENTIAL. Detritus. 2019; ume 07 - S ():1.

Chicago/Turabian Style

Ihsanullah Sohoo; Marco Ritzkowski; Kerstin Kuchta. 2019. "EVALUATION OF BEHAVIOR OF WASTE DISPOSAL SITES IN KARACHI, PAKISTAN AND EFFECTS OF ENHANCED LEACHING ON THEIR EMISSION POTENTIAL." Detritus ume 07 - S, no. : 1.

Journal article
Published: 17 August 2016 in RSC Advances
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APTES functionalized montmorillonite has potential applications in the removal of Sr(ii) from wastewater by coordination–adsorption.

ACS Style

Chongmin Liu; Pingxiao Wu; Lytuong Tran; Ihsanullah Sohoo; Yaping Dai; Nengwu Zhu; Chuling Guo. Enhancing the adsorption behavior and mechanism of Sr(ii) by functionalized montmorillonite with different 3-aminopropyltriethoxysilane (APTES) ratios. RSC Advances 2016, 6, 83288 -83295.

AMA Style

Chongmin Liu, Pingxiao Wu, Lytuong Tran, Ihsanullah Sohoo, Yaping Dai, Nengwu Zhu, Chuling Guo. Enhancing the adsorption behavior and mechanism of Sr(ii) by functionalized montmorillonite with different 3-aminopropyltriethoxysilane (APTES) ratios. RSC Advances. 2016; 6 (86):83288-83295.

Chicago/Turabian Style

Chongmin Liu; Pingxiao Wu; Lytuong Tran; Ihsanullah Sohoo; Yaping Dai; Nengwu Zhu; Chuling Guo. 2016. "Enhancing the adsorption behavior and mechanism of Sr(ii) by functionalized montmorillonite with different 3-aminopropyltriethoxysilane (APTES) ratios." RSC Advances 6, no. 86: 83288-83295.

Journal article
Published: 01 March 2016 in Chemical Engineering Journal
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Precious metal Palladium (Pd) is a scarce natural resource with increasing industrial demand. The use of microorganisms for biorecovery of Pd is a promising approach because it mimics natural biogeochemical cycles. In this study, we investigated the biorecovery of Pd0 nanoparticles (Pd0-NPs) by Enterococcus faecalis (E. faecalis) with sodium formate as electron donor. X-ray diffraction analyses exhibited that the process could successfully reduce Pd2+ and generate Pd0-NPs. Transmission electron microscope observation showed that the Pd0-NPs were associated at the membrane and inside of the cell. Under the optimum conditions of temperature (40 °C), sodium formate concentration (25 mM), biomass (1.2 g L−1), and 210 mg L−1 Pd2+ (pH 3.0–3.5) were completely reduced within 48 h. The percentage of the Pd0-NPs with an average size lower than 10 nm increased from 91.5% to 99.6% as the biomass increased from 1.2 to 3.6 g L−1, respectively. The catalytic property of the Pd0-NPs treated by ultrasonication was higher than chemically prepared Pd0. It showed that 6.3 mg Pd0-NPs could catalyze the complete reduction of 5.0 μmol Cr6+ in 12 h. All of these findings suggest that it is potentially feasible to recover Pd0-NPs with catalytic activity from industrial wastes using E. faecalis.

ACS Style

Chitam Ha; Nengwu Zhu; Ru Shang; Chaohong Shi; Jiaying Cui; Ihsanullah Sohoo; Pingxiao Wu; Yanlan Cao. Biorecovery of palladium as nanoparticles by Enterococcus faecalis and its catalysis for chromate reduction. Chemical Engineering Journal 2016, 288, 246 -254.

AMA Style

Chitam Ha, Nengwu Zhu, Ru Shang, Chaohong Shi, Jiaying Cui, Ihsanullah Sohoo, Pingxiao Wu, Yanlan Cao. Biorecovery of palladium as nanoparticles by Enterococcus faecalis and its catalysis for chromate reduction. Chemical Engineering Journal. 2016; 288 ():246-254.

Chicago/Turabian Style

Chitam Ha; Nengwu Zhu; Ru Shang; Chaohong Shi; Jiaying Cui; Ihsanullah Sohoo; Pingxiao Wu; Yanlan Cao. 2016. "Biorecovery of palladium as nanoparticles by Enterococcus faecalis and its catalysis for chromate reduction." Chemical Engineering Journal 288, no. : 246-254.