Nghiên cứu ứng dụng than cốc được điều chế từ vỏ Maccadamia và biến tính bằng H2O2 để xử lý màu methylene blue = Research application coal material is prepared from maccadamia peel and denatured by H2O2 to treat methylene blue

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Tác giả:

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Phát triển Khoa học & Công nghệ: Khoa học Trái đất và Môi trường, 2019

Mô tả vật lý: tr.96

Bộ sưu tập: NCBI

ID: 583291

Thêm vào giỏ

Macadamia shell contains a carbon content (47 - 49%), in addition, the shell contains 46.52% Oxidation, Hidro 6.10%, Nitrogen 0.36% and relatively low ash content of only 0.22%, this indicates the grain Macadamia has the potential to become activated carbon thanks to the above characteristics.This study was conducted to modify activated carbon by oxidizing agents to change the surface structure of activated carbon from hydrophobic to hydrophilic, non-polarizing to polarization, increasing the amount of adsorption simultaneously creating more durable links between dyes andactivated carbon. Study of Methylene Blue wastewater treatment with coal from Maccadamia shell modified with H2O2 agent at H2O2 ratio : coal = 10:1. Research results show that Methylene Blue adsorption capacity reaches 1g /266.26mg Methylene Blue at optimal conditions correspondingto 25% concentration and 48 hours of soaking time. Analysis of infrared spectra showed that coal is modified by H2O2 agent with functional groups –OH, Carboxylic functional group C=O, group C-H in NH3, C–N group in Amine aliphatic or in Alcohol or Phenol and C–O bonding. Modified coal by H2O2 oxidation agent has Methylene Blue color treatment efficiency of 93.26%, corresponding to the original color of 474.67 Pt - Co at the respective optimal conditions pH = 8.5, dose of 1 g/Land treatment time of 60 minutes. Research results are similar to other research results and are applicable to color wastewater treatmentMoreover, experimental results based on the results of the 6 simulations for simulation error, the track error in the CIMSS test decreased 14% and 14.3% respectively in the 48-hour forecast period and 72 hours compared with the MPH test, and decreased 14% and 23.9% respectively compared to the global GFS forecast. For storm intensity (Pmin and Vmax), the CIMSS test also resulted in significantly improved errors in the 72-hour forecast period compared to MPH testing. These results confirmed that the assimilation of the satellite wind data into the input field of the model has a positive effect on Haiyan storm intensity and trajectory prediction skills. We may used this research to applying the multi-physics ensemble Kalman filter for forecasting storms affecting Vietnam. Vỏ Maccadamia có hàm lượng Carbon (47-49%), ngoài ra trong vỏ còn chứa hàm lượng Oxi 46,52%, Hidro 6,10%, Nito 0,36% và hàm lượng tro tương đối thấp chỉ 0,22%, điều này cho thấy hạt Maccadamia có tiềm năng trở thành than hoạt tính nhờ những đặc tính nêu trên. Nghiên cứu này được thực hiện nhằm biến tính than hoạt tính bằng tác nhân oxy hóa để thay đổi cấu trúc bề mặt của than hoạt tính từ kỵ nước thành ưa nước, không phân cực thành phân cực, làm tăng lượng hấp phụ đồng thời tạo liên kết bền hơn giữa phẩm nhuộm và than hoạt tính. Nghiên cứu xử lý nước thải màu Methylene Blue bằng vật liệu than cốc từ vỏ Maccadamia được biến tính với tác nhân H2O2theo tỷ lệ H2O2 : than = 10:1. Kết quả nghiên cứu cho thấy khả năng hấp phụ Methylene Blue đạt 1g/266,26mg Methylene Blue ở các điều kiện tối ưu tương ứng nồng độ 25% và thời gian ngâm lắc 48h. Phân tích phổ hồng ngoại cho thấy, than được biến tính bằng tác nhân H2O2 có các nhóm chức –OH, nhóm chức Carboxylic C=O, nhóm C–H trong NH3, nhóm C–N trong Amin aliphatic hoặc trong Alcohol hay Phenol và liên kết C–H. Than biến tính bằng tác nhân oxy hóa H2O2 đạt hiệu suất xử lý màu Methylene Blue tốt nhất là 93,26% tương ứng độ màu ban đầu 474,67 Pt-Co tại các điều kiện tối ưu tương ứng pH = 8,5, liều lượng 1 g/L và thời gian xử lý 60 phút. Kết quả nghiêncứu có sự tương đồng với các kết quả nghiên cứu khác và có khả năng ứng dụng vào xử lý nước thải màu

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