Sử dụng phân bón vô cơ trong nuôi sinh khối tảo Scenedesmus sp.

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Thanh Tới Huỳnh, Thị Ngọc Hiền Huỳnh, Trường Giang Huỳnh

Ngôn ngữ: Vie

Ký hiệu phân loại: 636 Animal husbandry

Thông tin xuất bản: Khoa học (Đại học Cần Thơ) 2021

Mô tả vật lý: 173-180

Bộ sưu tập: Metadata

ID: 409776

Thêm vào giỏ Liên kết toàn văn

Tóm tắt
Chủ đề

Nghiên cứu nhằm xác định ảnh hưởng của nguồn dinh dưỡng (NPK, Walne và BG11) và liều lượng phân bón NPK (16:16:8) đến tăng trưởng sinh khối tảo Scendesmus sp. Nghiên cứu được thực hiện với hai thí nghiệm gồm so sánh tăng trưởng quần thể tảo nuôi bằng các nguồn sinh dinh dưỡng khác nhau (NPK, BG11 và Walne), và so sánh tăng trưởng quần thể tảo được nuôi ở nồng độ NPK khác nhau. Tảo được bố trí nuôi trong bình thủy tinh 8 L với mật độ ban đầu là 2×106 tb/mL. Ánh sáng được cung cấp từ đèn LED, cường độ chiếu sáng 3000 Lux, thời gian chiếu sáng 24/24, sục khí liên tục trong suốt thời gian thí nghiệm, trong phòng có điều chỉnh nhiệt độ (24,4±0,4 oC). Kết quả cho thấy tảo Scenedesmus sp. nuôi bằng NPK đạt mật độ cực đại là 35,1±1,1×106 tb/mL vào ngày 13 và khối lượng khô là 13,0±1,2 pg/tb, cao hơn so với các nghiệm thức còn lại, hàm lượng protein và lipid lần lượt là 42,9% và 5,0% khối lượng khô. Tảo Scenedesmus sp. đạt mật độ tảo cao nhất (33,2±0,2×106 tb/mL) khi nuôi với liều lượng NPK 50 mg/L sau 13 ngày nuôi. Do đó, phân NPK có thể sử dụng trong nuôi sinh khối tảo Scenedesmus sp. với liều lượng 50 mg/L để đạt mật độ cao nhất., Tóm tắt tiếng anh, This study is aimed to determine the effect of medium sources (NPK, Walne and BG11) and appropriate concentration of NPK fertilizer (16:16:8) on population growth of Scenedesmus sp. The growth of microalgae population was studied in two experiments: first with different nutrion sources (NPK, BG11 and Walne) and second with different NPK concentrations. Microalgae were cultured in 8 L glass bottles with initial density of 2×106 cells/mL. Light was provided from LEDs, illumination of 3000 Lux for 24/24, continuous aeration was supported during the experiment. The experiment was conducted under a room condition with controlled temperature (24.4±0.4°C). The results showed that Scenedesmus sp. cultured with NPK reached a maximum density of 35.1±1.1×106 cells/mL on day 13, a dry weight of 13.0±1.2 pg/tb, which is higher than that obtained with the remaining treatments. The protein and lipid content were 42.9% and 5.0% by dry weight, respectively. Scenedesmus sp. reached the highest algae density (33.2±0.2×106 cells/mL) when cultured with NPK 50 mg/L after 13 days of culture. Therefore, NPK can be used in Scenedesmus sp. biomass culture at a dosage of 50 mg/L to obtain the highest growth of microalgae populations.

Tạo bộ sưu tập với mã QR