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Semi-continuous Algae CultivationTh
Semi-continuous Algae Cultivation
The system was tested using three different harvesting rates with each rate being tested both
with and without additional CO2 supply. The harvesting rates were one half of the PBR
water volume (600 L) every other day (1/4), one third (1/3) of the PBR water volume
(400 L) daily, and half (¨ö) of the PBR water volume (600 L) daily. These rates were tested
to determine the optimal operation parameters that yielded a maximum production of algal
biomass. The effect of additional CO2 was tested by adding CO2 (100%) to the mixing tank
through a ceramic diffuser. Since the addition of CO2 affects the pH value of the system, the
CO2 flow rate was controlled to keep the pH in the range of 7.0¡7.5. For each test, the
running time was ranged from 9 to 29 days. This range was corresponds to three times of
the hydraulic retention time (HRT) of that test run. For example, the harvesting of one half
every other day has a HRT of 4 days. Thus, the experiment length should be longer than
12 days. Table 2 summarizes the experimental arrangements.
The system was tested using three different harvesting rates with each rate being tested both
with and without additional CO2 supply. The harvesting rates were one half of the PBR
water volume (600 L) every other day (1/4), one third (1/3) of the PBR water volume
(400 L) daily, and half (¨ö) of the PBR water volume (600 L) daily. These rates were tested
to determine the optimal operation parameters that yielded a maximum production of algal
biomass. The effect of additional CO2 was tested by adding CO2 (100%) to the mixing tank
through a ceramic diffuser. Since the addition of CO2 affects the pH value of the system, the
CO2 flow rate was controlled to keep the pH in the range of 7.0¡7.5. For each test, the
running time was ranged from 9 to 29 days. This range was corresponds to three times of
the hydraulic retention time (HRT) of that test run. For example, the harvesting of one half
every other day has a HRT of 4 days. Thus, the experiment length should be longer than
12 days. Table 2 summarizes the experimental arrangements.
0/5000
Trồng trọt liên tục bán tảoHệ thống đã được thử nghiệm bằng cách sử dụng ba khác nhau thu hoạch tỷ lệ với tỷ lệ mỗi đang thử nghiệm cả haicó và không có bổ sung CO2 cung cấp. Tỷ lệ thu hoạch là một nửa của PBRnước khối lượng (600 L) mỗi ngày khác (1/4), một phần ba (1/3) của PBR nước khối lượng(400 L) hàng ngày, và một nửa (¨ö) của PBR nước khối lượng (600 L) hàng ngày. Tỷ giá này đã được thử nghiệmđể xác định các thông số tối ưu hoạt động mang lại một sản xuất tối đa của tảonhiên liệu sinh học. Tác dụng của bổ sung CO2 đã được thử nghiệm bằng cách thêm CO2 (100%) vào trộn hồthông qua một bộ khuếch tán gốm. Kể từ khi việc bổ sung của CO2 ảnh hưởng đến giá trị pH của hệ thống, cácTỷ lệ lưu lượng CO2 được kiểm soát để giữ cho độ pH trong khoảng 7.0¡7.5. Đối với mỗi bài kiểm tra, cácChạy thời gian trải dài từ 9 đến 29 ngày. Phạm vi này là tương ứng với ba lần củathời gian lưu giữ thủy lực (HRT) của rằng thử nghiệm chạy. Ví dụ, việc thu hoạch của một nửamỗi ngày có một HRT 4 ngày. Do đó, chiều dài thử nghiệm nên dài hơn12 ngày. Bảng 2 tóm tắt những sắp xếp thử nghiệm.
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Semi-continuous Algae Cultivation
The system was tested using three different harvesting rates with each rate being tested both
with and without additional CO2 supply. The harvesting rates were one half of the PBR
water volume (600 L) every other day (1/4), one third (1/3) of the PBR water volume
(400 L) daily, and half (¨ö) of the PBR water volume (600 L) daily. These rates were tested
to determine the optimal operation parameters that yielded a maximum production of algal
biomass. The effect of additional CO2 was tested by adding CO2 (100%) to the mixing tank
through a ceramic diffuser. Since the addition of CO2 affects the pH value of the system, the
CO2 flow rate was controlled to keep the pH in the range of 7.0¡7.5. For each test, the
running time was ranged from 9 to 29 days. This range was corresponds to three times of
the hydraulic retention time (HRT) of that test run. For example, the harvesting of one half
every other day has a HRT of 4 days. Thus, the experiment length should be longer than
12 days. Table 2 summarizes the experimental arrangements.
The system was tested using three different harvesting rates with each rate being tested both
with and without additional CO2 supply. The harvesting rates were one half of the PBR
water volume (600 L) every other day (1/4), one third (1/3) of the PBR water volume
(400 L) daily, and half (¨ö) of the PBR water volume (600 L) daily. These rates were tested
to determine the optimal operation parameters that yielded a maximum production of algal
biomass. The effect of additional CO2 was tested by adding CO2 (100%) to the mixing tank
through a ceramic diffuser. Since the addition of CO2 affects the pH value of the system, the
CO2 flow rate was controlled to keep the pH in the range of 7.0¡7.5. For each test, the
running time was ranged from 9 to 29 days. This range was corresponds to three times of
the hydraulic retention time (HRT) of that test run. For example, the harvesting of one half
every other day has a HRT of 4 days. Thus, the experiment length should be longer than
12 days. Table 2 summarizes the experimental arrangements.
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