scholarly journals Comparison of energy production, net energy balance, net energy ratio, and renewable index for biodiesel production from oil palm (Elaeis guineensis Jacq.) and jatropha (Jatropha curcas L.) based on life cycle assessment

2019 ◽  
Vol 293 ◽  
pp. 012025
Author(s):  
K Siregar ◽  
A H Tambunan ◽  
Sholihati ◽  
S S Wirawan ◽  
T Araki
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Balance ◽  
Oil Palm ◽  
Jatropha Curcas ◽  
Energy Production ◽  
Elaeis Guineensis ◽  
Biodiesel Production ◽  
Net Energy ◽  
Net Energy Ratio

scholarly journals Perhitungan Potensi Limbah Padat Kelapa Sawit untuk Sumber Energi Terbaharukan dengan Metode LCA

2017 ◽  
Vol 18 (2) ◽  
pp. 165 ◽  
Author(s):  
Joko Prayitno Susanto ◽  
Arif Dwi Santoso ◽  
Nawa Suwedi
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Balance ◽  
Palm Oil ◽  
Energy Ratio ◽  
Net Energy ◽  
Crude Palm Oil ◽  
Net Energy Ratio

Proses produksi crude palm oil (CPO) dan biodiesel kelapa sawit menghasilkan limbah padat sebanyak 35-40% dari total tandan buah segar (TBS) yang diolah, dalam bentuk tandan buah kosong, serat, cangkang buah dan abu bakar. Keberadaan limbah yang melimpah ini berpotensi mencemari lingkungan bila tidak tertangani dengan baik. Penelitian ini bertujuan untuk membahas dan menghitung potensi limbah padat sawit menjadi energi terbarukan dan pengaruhnya terhadap peningkatan nilai net energy ratio (NER) dan net energy balance (NEB). Dalam penelitian ini digunakan metode life cycle assessment (LCA) untuk menghitung neraca limbah padat yang hasilnya akan dikonversikan ke dalam nilai faktor energi dari sumber pustaka yang terpercaya. Hasil neraca massa limbah sawit menunjukkan bahwa total limbah padat serat dan cangkang yang dihasilkan setiap pengolahan 1 ton TBS adalah 130 kg dan 65 kg. Limbah ini bila digunakan sebagai bahan bakar boiler akan berpotensi menghasilkan energi sebesar 10.118 MJ/ton biodiesel. Tambahan energi terbarukan ini akan meningkatkan nilai NER dan NEB secara signifikan. Nilai NEB naik 27.199 MJ menjadi sekitar 37.317 MJ (37,2%) dan nilai NER naik dari 3,19 menjadi 4,01 atau meningkat 25,5%.Kata kunci : CPO, biodiesel, kelapa sawit, limbah padat sawit, NER, NEB, LCA 

scholarly journals Energy Saving Potential using Elite Jatropha Curcas Hybrid for Biodiesel Production in Malaysia

2019 ◽  
Vol 8 (4) ◽  
pp. 6281-6287 ◽  
Keyword(s):  
Energy Saving ◽  
Jatropha Curcas ◽  
Fossil Fuels ◽  
Edible Oils ◽  
Biodiesel Production ◽  
Net Energy ◽  
Renewable Energy Resources ◽  
Energy Saving Potential ◽  
Net Energy Ratio ◽  
By Products

The world continues to search for renewable energy resources, due to the devastating effect of global warming and the dwindling resources of fossil fuels. Without needing much modifications to the existing diesel engines, biodiesel is regarded as one of the most promising ways to treat these two issues simultaneously. However, the production of biodiesel is always associated with a higher cost compared to its counterpart; the petroleum-derived diesel. In addition, the type of feedstock used in the production of biodiesel also has also become a big concern due to the never-ending fuel vs food debate. Jatropha curcas is a second generation feedstock which can be specifically grown to avoid the usage of edible oils as feedstock to produce fuel. In this paper, the energy saving potential of using elite Jatropha curcas hybrid for biodiesel production in Malaysia are evaluated by conducting a full chain energy analysis. It was found that the new hybrid consumed 25.32 MJ of energy in order to produce 1kg of biodiesel. The net energy balance (NEB) and net energy ratio (NER) when by-products are not utilized are found to be 15.89 MJ/kg and 1.63, respectively. However, the NEB and NER increase to 26.72 MJ/kg and 2.84 when the by-products are used in the biodiesel conversion process. Hence, this new hybrid of Jatropha curcas has a huge potential to be used for the production of biodiesel.

scholarly journals Review of Implementation Life Cycle Assessment for Biodiesel Production from Palm Oil (Elaeis guineensis Jacq.) in Indonesia

2020 ◽  
Vol 190 ◽  
pp. 00021 ◽  
Author(s):  
Kiman Siregar ◽  
Sholihati Sholiati ◽  
Intan Sofiah ◽  
Try Miharza ◽  
Roy Hendroko Setyobudi ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Palm Oil ◽  
Environmental Effect ◽  
Elaeis Guineensis ◽  
Oil Production ◽  
Biodiesel Production ◽  
Literature Study ◽  
Boundary System ◽  
Gate System

Palm oil has benefits for economic and social development in Indonesia. However, palm oil is faced by several environmental problems most of them due to the land conversion from forest to the palm plantation. Therefore, numerous greenhouse gas emissions and other environmental effects also emitted during palm oil and biodiesel production. The life cycle assessment (LCA) method can be used for the evaluation of the palm oil production process impact on the environment as well as for potentially reducing the hotspot. A literature study was used in the identification of the implementation of LCA for biodiesel from palm oil in Indonesia. Study cradle to grave LCA for biodiesel production in Indonesia was still limited. Gate to gate and cradle to gate system boundary was the major boundary system used in the identification of the environmental effect for biodiesel production in Indonesia. However, numerous study has applied that boundary system and various scenario has been proposed in reducing the environmental effect for biodiesel production. Limitation of the LCA boundary for palm oil production is needed to be enhanced as well. Robust life cycle inventory in a wider range (i.e., cradle to grave) will be needed in order to present this industry in a global forum.

Life cycle assessment of Jatropha curcas biodiesel production: a case study in Mexico

2018 ◽  
Vol 20 (7) ◽  
pp. 1721-1733 ◽  
Author(s):  
Alfredo Fuentes ◽  
Carlos García ◽  
Anna Hennecke ◽  
Omar Masera
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Jatropha Curcas ◽  
Biodiesel Production ◽  
Jatropha Curcas Biodiesel

scholarly journals TELAAH PRODUKSI BIODIESEL DARI BIOMASSA MIKROALGA

2016 ◽  
Vol 17 (2) ◽  
pp. 66
Author(s):  
Arif D Santos
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Ratio ◽  
Net Energy ◽  
Input Output ◽  
Net Energy Ratio

Pusat Teknologi Lingkungan-BPPT telah melakukan ujicoba budidaya mikroalga dalam fotobioreaktor untuk mengetahui produktivitas sel, efisiensinya terhadap penyerapan gas rumah kaca hingga potensinya sebagai bahan baku biofuel. Pada penelitian ini telah dihitung kesetimbangan energi dari keseluruhan proses budidaya alga untuk kemudian hasilnya dibandingkan dengan nilai kapabiltas penyerapan gas karbon dari proses tersebut. Nilai kesetimbangan energi dihitung dengan menggunakan metode perhitungan Life Cycle Assessment (LCA), sedangkan nilai kapabilitas penyerapan karbon diukur langsung dari ujicoba reaktor. Nilai kapabilitas penyerapan karbon kemudian dibandingkan dengan nilai pengantian biaya dari emisi karbon yang diacu oleh beberapa negara yang telah menerapkan satuan biaya penggantian penyerapan emisi karbon. Hasil perhitungan menyatakan bahwa Penelusuran variable dengan menggunakan aplikasi LCA dapat memberi gambaran dengan rinci tentang inventarisasi input, output  pada proses produksi. Energi terbesar yang digunakan pada proses produksi terjadi pada tahap budidaya yakni pada kegiatan pemanenan sebesar 55,6 MJ dan proses pemecahan dinding sel sebesar 35 MJ. Nilai hasil perhitungan NER pada produksi biodiesel mikroalga adalah 0,62±0,78. Total biaya dan total pendapatan dari proses produksi biodiesel dari mikroalga sebesar Rp. 62.980,- dan Rp. 42.900,-.Kata kunci : alga fotobioreaktor, kesetimbangan energi, NER (net energy ratio), Life Cycle Assessment (LCA), emisi karbon

The use of the risk assessment in the life cycle assessment framework

2015 ◽  
Vol 26 (3) ◽  
pp. 389-406 ◽  
Author(s):  
Maria Francesca Milazzo ◽  
Francesco Spina
Keyword(s):  
Risk Assessment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Human Health ◽  
Biodiesel Production ◽  
Health Impacts ◽  
Complete Analysis ◽  
Transfer Factors ◽  
Content Type ◽  
Human Health Impacts

Purpose – The purpose of this paper is to quantify the human health impacts of soy-biodiesel production with the aim to discuss about its environmental sustainability. Design/methodology/approach – The integrated use of two current approaches, risk assessment (RA) and life cycle assessment (LCA), has allowed improvement of the potentialities of both in obtaining a more complete analysis. The implementation of a life cycle indicator for the assessment of the impacts on the human health, integrating the features of both approaches, is the main focus of this paper. Findings – It has been found that, although the biodiesel is a green fuel, it has some criticalities in its life cycle, which cannot be disregarded. In fact, even if biodiesel is essentially a clean fuel there are some phases, prior to the industrial phase, that can cause negative effects on human health and ecosystems. Practical implications – Results suggest some measures which can be adopted to substantially reduce human health impacts. Further alternative could be analysed in future to gain more insight about the use of biodiesel fuels. Originality/value – The estimation of the impacts of a process producing biodiesel has been made by using a novel approach. The novelty is associated with the calculation of the impacts on human health by using the transfer factors applied in RA. The use of such factors, properly modified in order to estimate the impacts on a wider scale than a site-dimension, allows defining a holistic approach, as LCA and RA are used as complete units but at the same time can be related to each other.

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