Plant factory: A new method for reducing carbon emissions

Zhang, Rong; Liu, Tong; Ma, Jianshe

doi:10.1063/1.4977288

Cited by 10 publications

(6 citation statements)

References 2 publications

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“…The last observation regarding inorganic nitrogen treatment was a high nitrate concentration in the culture tank in both treatments. The effluent containing nitrate from the BFT system can be coupled with photosynthesis processes (e.g., algal cultivation, plant factory, and aquaponics) to produce biomass and other high‐value biochemicals 8,31‐33 …”

Section: Resultsmentioning

confidence: 99%

Evaluation of modified biofloc system with filtration unit in controlling suspended solids and inorganic nitrogen concentrations in a recirculating aquaculture system

Kunwong

Satanwat

Powtongsook

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Biofloc technology systems (BFT) often encounter difficulties in controlling suspended solid levels in tanks. The oxygen consumption rates and ammonia removal rates of bioflocs as the BFT system shifts from assimilation towards nitrification have rarely been reported. Thus, the performance of the BFT system with a filtration unit was evaluated. RESULTS Preliminary work found that the optimal screen pore size and recirculating flow rate were 100 μm and 3000 L day−1, respectively. The BFT system with the filtration unit could maintain suspended solids in the fish tank below 50 mg‐SS L−1 while retaining significantly higher suspended solids in the biofloc reactor (509 ± 44.6 mg‐SS L−1). The daily starch addition at a C:N mass ratio of 10:1 in phase I (day 1–38) induced the biofloc formation that kept TAN and nitrite levels below 1.0 mg‐N L−1. The fraction of inorganic nitrogen compounds increased from 2.5% in phase I to 27.6% in phase III (day 56–70). TAN removal rates increased from 3.0 mg‐N g‐SS−1 day−1 during phase I to 10.34 ± 0.392 mg‐N g‐SS−1 day−1 after complete nitrification occurred. Relatively constant oxygen consumption rates of the bioflocs (149.1 ± 9.53 mg‐ O2 g‐SS−1 day−1) were observed for the entire experiment. CONCLUSION The BFT system with a filtration unit was effective in controlling suspended solid and inorganic nitrogen concentrations. Nitrogen treatment pathway of BFT system was assimilation during startup period but gradually shifted to nitrification. Oxygen consumption rates of the bioflocs are relatively constant regardless of the pathways responsible for nitrogen treatment. © 2021 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 99%

Evaluation of modified biofloc system with filtration unit in controlling suspended solids and inorganic nitrogen concentrations in a recirculating aquaculture system

Kunwong

Satanwat

Powtongsook

et al. 2021

J of Chemical Tech & Biotech

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“…Sự kết hợp giữa tăng chiếu sáng và tăng nhiệt độ có thể ảnh hưởng tích cực đối với việc tích lũy các chất chuyển hóa có lợi cho sức khỏe trong các loại rau ăn lá. Zhang và các cộng sự, 2017 thí nghiệm về ảnh hưởng của nồng độ CO2 đến sinh trưởng của cây trong nhà máy sinh khối thực vật với hệ thống ánh sáng nhân tạo cũng cho thấy khi tăng nồng độ CO2 trong môi trường nhân tạo lên đến 1000 ppm, sản lượng của cây trồng có thể tăng lên đến 20-25% [12].…”

Section: đặT Vấn đề *unclassified

Effects of Led Light Intensity and Carbon Dioxide Concentration on the Growth of Spinach (Spinacia oleracea L.) in a Plant Factory

Thuỳ

Khanh²,

Duy³

2022

NST

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This research aimed to investigate the effects of light intensity and the carbon dioxide (CO2) concentration on spinach’s growth during vegetative stage in plant factory (PF). Two experiments were conducted with different CO2 concentration in closed chamber (500 ppm and 800 ppm). In each experiment, plants were hydroponically grown under three light intensities of 115, 140 and 160 µmol.m-2s-1. Growth’s parameters were determined at different growth stages (T30, T37 and T44 respectively to 30, 37 and 44 days after sowing). ANOVA analysis and non-parametric Kruskal analysis of variance were used to evaluate the statistical significance of the treatment effects. The results showed that, before 30 days old, the increase of light intensity was not significantly effected to the growth of plant. During later growing periods (30 days old afterward), the increase of light intensity remarkably boost up yield’s related traits such as leaf number, fresh mass and dry mass under 500ppm CO2 concentration. The combination of light intensity and CO2concentration at 800ppm showed the plant growth indicators increased significantly at the T37 and T44 stages (after 30 days old), especially at the last week of growth period, fresh weight and dry weight of plants were significantly different at the light treatment L2, increased 37% and 57.6%, respectively as compared to light treament only. The results suggested that, during latest growing period, the average light intensity of 140 µmol.m-2s-1combining with elevating CO2 concentration is an alternatively way to enhance spinach growth. The findings of this study could be helpful for growers to improve growing conditions for a better development of spinach in the indoor farming (PF)

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“…For instance, Liang et al [31] have demonstrated that peppers can grow better under appropriate artificial strategies including light and temperature control in PFALs. Zhang et al [32] have built a closed PFAL and found that the production of the plants increased by 20-25%, and the plants fixed a considerable amount of CO 2 by increasing the concentration of CO 2 in the environment to 1000 ppm. Chowdhury et al [33] established five environmental conditions in a plant factory for comparison and discovered the best CO 2 concentration, humidity, and temperature ranges for kale growth and total glucosinolate content, respectively.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Carbon Capture by an Intelligent Vertical Plant Factory within an Industrial Park

Chen,

Dong,

Lei

et al. 2024

Sustainability

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Bio-based carbon capture and utilization emerges as a critical pathway to mitigate carbon dioxide (CO2) emissions from industrial activities. Within this context, plant factories become an innovative solution for biological carbon capture within industrial parks, fed with the substantial carbon emissions inherent in industrial exhaust gases to maximize their carbon sequestration capabilities. Among the various plant species suitable for such plant factories, Pennisetum giganteum becomes a candidate with the best potential, characterized by its high photosynthetic efficiency (rapid growth rate), perennial feature, and significant industrial value. This paper studies the feasibility of cultivating Pennisetum giganteum within an intelligent plant factory situated in an industrial park. An automated and intelligent plant factory was designed and established, in which multiple rounds of Pennisetum giganteum cultivations were performed, and life cycle assessment (LCA) was carried out to quantitatively evaluate its carbon capture capacity. The results show that the primary carbon emission in the plant factory arises from the lighting phase, constituting 67% of carbon emissions, followed by other processes (15%) and the infrastructure (10%). The absorption of CO2 during Pennisetum giganteum growth in the plant factory effectively mitigates carbon emissions from industrial exhaust gases. The production of 1 kg of dry Pennisetum giganteum leads to a net reduction in emissions by 0.35 kg CO2 equivalent. A plant factory with dimensions of 3 m × 6 m × 2.8 m can annually reduce carbon emissions by 174 kg, with the annual carbon sequestration per unit area increased by 56% compared to open-field cultivation. Furthermore, large-scale plant factories exhibit the potential to offset the carbon emissions of entire industrial parks. These findings confirm the viability of bio-based carbon capture using intelligent plant factories, highlighting its potential for carbon capture within industrial parks.

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Plant factory: A new method for reducing carbon emissions

Cited by 10 publications

References 2 publications

Evaluation of modified biofloc system with filtration unit in controlling suspended solids and inorganic nitrogen concentrations in a recirculating aquaculture system

Evaluation of modified biofloc system with filtration unit in controlling suspended solids and inorganic nitrogen concentrations in a recirculating aquaculture system

Effects of Led Light Intensity and Carbon Dioxide Concentration on the Growth of Spinach (Spinacia oleracea L.) in a Plant Factory

Life Cycle Assessment of Carbon Capture by an Intelligent Vertical Plant Factory within an Industrial Park

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