Economic and Environmental Analysis for Advancing Sustainable Management of Livestock Waste: A Wisconsin Case Study

Sampat, Apoorva M.; Ruiz-Mercado, Gerardo J.; Zavala, Ví­ctor M.

doi:10.1021/acssuschemeng.7b04657

Cited by 30 publications

(20 citation statements)

References 18 publications

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“…Before quantifying inputs and outputs of the system, characteristics of the AD‐L‐dairy manure are listed in order to calculate the quantity of chemicals required to precipitate struvite. Data from Wang et al (2019), Aguirre‐Villegas et al (2018, 2019), and Sampat et al (2018) are used to calculate total nitrogen (TN), total phosphorus (TP), calcium (Ca 2+ ), and magnesium (Mg 2+ ) parameters for the AD‐L‐dairy manure input, as these studies are based on Wisconsin farms. Other microminerals are listed as a miscellaneous category.…”

Section: Methodsmentioning

confidence: 99%

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Temizel-Sekeryan

Hicks

2020

Integr Envir Assess & Manag

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Recovering valuable nutrients (e.g., P and N) from waste materials has been extensively investigated at the laboratory scale. Although it has been shown that struvite precipitation from several manure sources contributes to nutrient management practices by recovering valuable nutrients and preventing them from reaching water bodies, it has not been widely applied in commercial (i.e., farm) scales. The purpose of this study is to evaluate the potential environmental impacts of the struvite recovery process from the liquid portion of the anaerobically digested dairy cow manure generated in Wisconsin, USA, dairy farms using life cycle assessment methodology for both bench-and farm-scale scenarios. The struvite precipitation process involves the use of additional chemicals and energy; therefore, investigating upstream impacts is crucial to evaluate the environmental costs and benefits of this additional treatment process. Results indicate that up to a 78% impact decrease in eutrophication potential can be achieved when P and N are recovered in the form of struvite and are applied in lieu of conventional fertilizers, rather than using the liquid portion of the anaerobically digested dairy manure as a fertilizer. Additionally, significant differences are identified in the majority of environmental impact categories when the struvite precipitation process is modeled and evaluated in a farm-scale setting. Future work should expand to evaluate the overall environmental impacts and trade-offs of struvite recovery application, including the anaerobic digestion system itself at the farm scale.

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Section: Methodsmentioning

confidence: 99%

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Temizel-Sekeryan

Hicks

2020

Integr Envir Assess & Manag

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“…The biogas (in metric tons) can be sold directly or can be used as raw material to produce electricity (in MWh) and liquefied biomethane (in gallons). These products are represented as i 1 , i 2 , and i 3 respectively [17,26]. The process under study is visualized in Figure 11.…”

Section: Multi-product Problemmentioning

confidence: 99%

Mitigating Investment Risk Using Modular Technologies

Shao

Yi-cheng

Zavala

2020

Preprint

Self Cite

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We study logistical investment flexibility provided by modular processing technologies for mitigating risk. Specifically, we propose a multi-stage stochastic programming formulation that determines optimal capacity expansion plans that mitigate demand uncertainty. The formulation accounts for multi-product dependencies between small/large units and for trade-offs between expected profit and risk. The formulation uses a cumulative risk measure to avoid timeconsistency issues of traditional, per-stage risk-minimization formulations and we argue that this approach is more compatible with typical investment metrics such as the net present value. Case studies of different complexity are presented to illustrate the developments. Our studies reveal that the Pareto frontier of a flexible setting (allowing for deployment of small units) dominates the Pareto frontier of an inflexible setting (allowing only for deployment of large units). Notably, this dominance is prevalent despite benefits arising from economies of scale of large processing units.

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“…(Kementerian Lingkungan Hidup, 2012). Kotoran ternak selain bermanfaat sebagai penyumbang nutrisi pada tanah untuk pertumbuhan tanaman juga memiliki kontribusi negatif terhadap lingkungan berupa penurunan kualitas udara dari emisi ammonia dan metana, pencemaran tanah jika kotoran masih segar dan akan membuat tanah menjadi asam, dan masalah pencemaran air terkait dengan lepasnya nutrisi dan pathogen ke sumber air menyebabkan eutropikasi, membludaknya alga dan hipoksia (Sampat et al, 2018).…”

Section: Pendahuluanunclassified

Emisi Metana dari Pengelolaan Kotoran Ternak di Yogyakarta – Inventarisasi

Hervani¹,

Ariani

2019

JPI

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Penelitian ini bertujuan untuk memberikan informasi secara berkala mengenai tingkat, status, dan kecenderungan emisi metana dari pengelolaan kotoran ternak di Yogyakarta. Penelitian ini merupakan penelitian desk study dengan cara melakukan inventarisasi GRK menggunakan Intergovernmental Panel on Climate Change (IPCC) Guidelines 2006. Penelitian dilaksanakan dengan mengumpulkan data aktivitas ternak provinsi Yogyakarta pada bulan November tahun 2016 sebagai sumber emisi GRK, serta penetapan faktor emisi berdasarkan IPCC Guidelines 2006. Data aktivitas didapatkan dari data statistik provinsi Yogyakarta. Inventarisasi emisi gas rumah kaca dari pengelolaan kotoran ternak di Yogyakarta menggunakan Tier 1 dari IPCC Guidelines. Hasil penelitian menunjukkan bahwa emisi terbesar dari pengelolaan kotoran ternak di Yogyakarta dari ternak unggas yaitu ternak ayam ras pedaging yang menyumbang 37% diikuti ayam buras sebesar 24%, ayam ras petelur sebesar 20% dan itik sebesar 3%. Sedangkan emisi dari ternak mamalia seperti sapi potong, sapi perah, kuda, kerbau, kambing, domba dan babi menyumbangkan emisi metana yang rendah terhadap total emisi metana dari pengelolaan kotoran ternak di Yogyakarta.

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Economic and Environmental Analysis for Advancing Sustainable Management of Livestock Waste: A Wisconsin Case Study

Cited by 30 publications

References 18 publications

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Mitigating Investment Risk Using Modular Technologies

Emisi Metana dari Pengelolaan Kotoran Ternak di Yogyakarta – Inventarisasi

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