CHANGE OF TEMPERATURE AND DISSOLVED OXYGEN CONTENTS IN THE PRODUCTION OF SLURRY ICE COMBINED WITH NITROGEN NANO=CHANGE OF TEMPERATURE AND DISSOLVED OXYGEN CONTENTS IN THE PRODUCTION OF SLURRY ICE COMBINED WITH NITROGEN NANO

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Tác giả: Dinh Xuan Hung, Quoc Cuong Truong

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Đại học Công Thương (Tên cũ: Tạp chí Khoa học Công nghệ và Thực phẩm), 2024

Mô tả vật lý: tr.122

Bộ sưu tập: Metadata

ID: 479864

Thêm vào giỏ

Nghiên cứu phối hợp vận hành giữa thiết bị đá sệt và Ni tơ Nano được triển khai để tạo ra đá sệt có hàm lượng DO thấp dưới ngưỡng phát triển của vi sinh vật hiếu khí và nhiệt độ cận đông. Nghiên cứu gồm có 04 nghiệm thức: (1) bật thiết bị tạo Nitơ Nano để giảm hàm lượng oxy trong nước xuống dưới 1,0 mg/L rồi dừng trước khi bật máy đá sệt (CDH1)
(2) Khởi động hai thiết bị cùng lúc (CDH2)
(3) Hai máy khởi động đồng thời và khi nhiệt độ về 0 °C thì tắt máy Nitrogen Nano (CDH3)
(4) Khởi động thiết bị tạo Nitrogen Nano khi nhiệt độ nước đạt 0 °C (CDH4) và 01 đối chứng NoNano (không sục khí Nitơ Nano). Kết quả cho thấy, chế độ cho 02 thiết bị Nitrogen Nano và đá sệt hoạt động đồng thời (CDH2) hoặc máy Nitrogen Nano được hẹn giờ chạy khi nhiệt độ hỗn hợp đạt 0 °C (CDH4) đạt mục tiêu về hàm lượng oxy hòa tan và nhiệt độ ở cuối quá trình quá trình lần lượt nhỏ hơn 1,0 mg/L và -1,5 °C. Xét hai khía cạnh hiệu quả kinh tế và hiệu quả kỹ thuật, đề nghị chọn phương án máy đá sệt vận hành đến khi nhiệt độ hỗn hợp đạt 0 °C thì khởi động thiết bị Ni tơ Nano và cho hoạt động đến hết quá trình tạo đá.The combination research of slurry ice technology and Nitrogen Nanotechnology was implemented in order to create a new slurry ice solution of temperature from -1 oC to -2 oC and dissolved oxygen content of under 1,0 mg/L. There were four experiment, including: (1) Turning on the Nitrogen Nano machine to reduce the DO content in the water to less than 1.0 mg/L and then stopping it before turning on the slurry ice machine (CDH1)
(2) Two machines operate simultaneously (CDH2)
(3) Two machines start simultaneously and when the temperature of the water reaches to 0 oC, stop Nitrogen Nano machine priorly (CDH3)
and (4) The slurry ice machine works until temperature of the solution reaches 0 oC, Nitrogen Nano machine starts running (CDH4) and one control experiment (NoNano). The results indicated that setting up for the Nitrogen Nano and slurry ice machines operates simultaneously (CDH2) or Nitrogen Nano machine is timed for running when the temperature of the mixture reached 0 oC (CDH4), that attained both DO content and temperature at the end of the process was less than 1.0 mg/L and -1.5 oC respectively. In concern about both economy and technology aspects, recommending while slurry ice working, Nitrogen Nano machine is timed for running when the mixture reaches temperature of 0oC then both machines operate to end of process.

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