Advanced Treatment of Paper-Making Wastewater Using Catalytic Ozonation with Waste Rice Straw-Derived Activated Carbon-Supported Manganese Oxides as a Novel and Efficient Catalyst

A novel three-stage catalytic ozonation-BAC process is proposed to treat highly polluted source water. A pilot study of 120 m3/d was performed in south China and lasted 9 months. The results showed that catalysts improved the THMsFP reduction efficiency by around 18% for BAC step and reduced the effluent bromate by 20%-77%; reduced NH4-N to below 1 mg/L; The effluent COD met the national standard under all circumstances.

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Rice straw paper incorporated with activated carbon as an ethylene scavenger in a paper-making process

International Journal of Food Science & Technology ◽

10.1111/j.1365-2621.2011.02871.x ◽

2011 ◽

Vol 47 (3) ◽

pp. 511-517 ◽

Cited By ~ 4

Author(s):

Rungsinee Sothornvit ◽

Chaiyaporn Sampoompuang

Keyword(s):

Activated Carbon ◽

Rice Straw ◽

Paper Making ◽

Ethylene Scavenger

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Advanced treatment of biologically pretreated coal chemical industry wastewater using the catalytic ozonation process combined with a gas-liquid-solid internal circulating fluidized bed reactor

Water Science & Technology ◽

10.2166/wst.2018.073 ◽

2018 ◽

Vol 77 (7) ◽

pp. 1931-1941 ◽

Cited By ~ 3

Author(s):

Zhipeng Li ◽

Feng Liu ◽

Hong You ◽

Yi Ding ◽

Jie Yao ◽

...

Keyword(s):

Activated Carbon ◽

Liquid Phase ◽

Fluidized Bed ◽

Circulating Fluidized Bed ◽

Fluidized Bed Reactor ◽

Catalytic Performance ◽

Catalytic Ozonation ◽

Advanced Treatment ◽

Combined System ◽

Industry Wastewater

Abstract This paper investigated the performance of the combined system of catalytic ozonation and the gas-liquid-solid internal circulating fluidized bed reactor for the advanced treatment of biologically pretreated coal chemical industry wastewater (CCIW). The results indicated that with ozonation alone for 60min, the removal efficiency of chemical oxygen demand (COD) could reach 34%. The introduction of activated carbon, pumice, γ-Al2O3 carriers improved the removal performance of COD, and the removal efficiency was increased by 8.6%, 4.2%, 2%, respectively. Supported with Mn, the catalytic performance of activated carbon and γ-Al2O3 were improved significantly with COD removal efficiencies of 46.5% and 41.3%, respectively; however, the promotion effect of pumice supported with Mn was insignificant. Activated carbon supported with Mn had the best catalytic performance. The catalytic ozonation combined system of MnOX/activated carbon could keep ozone concentration at a lower level in the liquid phase, and promote the transfer of ozone from the gas phase to the liquid phase to improve ozonation efficiency.

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New Biology for Advanced Wastewater Treatment

Water Science & Technology ◽

10.2166/wst.1999.0585 ◽

1999 ◽

Vol 40 (4-5) ◽

pp. 137-144 ◽

Cited By ~ 6

Author(s):

K. Miserez ◽

S. Philips ◽

W. Verstraete

Keyword(s):

Wastewater Treatment ◽

Activated Carbon ◽

Organic Carbon ◽

Genetically Modified Organisms ◽

New Technologies ◽

Chemical Oxidation ◽

Advanced Treatment ◽

Biological Activated Carbon ◽

Catabolic Potential ◽

New Biology

A number of new technologies for the advanced treatment of wastewater have recently been developed. The oxidative cometabolic transformation by methanotrophs and by nitrifiers represent new approaches in relation to organic carbon. The Biological Activated Carbon Oxidative Filters characterized by thin biofilms are also promising in that respect. Moreover, implementing genetically modified organisms with improved catabolic potential in advanced water treatment comes into perspective. For very refractory effluents chemical support techniques, like e.g. strong chemical oxidation, can be lined up with advanced biology.

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Photo-catalytic Study of Malachite Green Dye Degradation Using Rice Straw Extracted Activated Carbon Supported ZnO Nano-particles

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681209666190722121926 ◽

2020 ◽

Vol 10 (6) ◽

pp. 849-859

Author(s):

Radwa A. El-Salamony ◽

Abeer A. Emam ◽

Nagwa A. Badawy ◽

Sara F. El-Morsi

Keyword(s):

Activated Carbon ◽

Visible Light ◽

Rice Straw ◽

Malachite Green ◽

Dye Degradation ◽

Nano Particles ◽

Oh Radicals ◽

Impregnation Method ◽

Photo Degradation ◽

Malachite Green Dye

Objective: ZnO nanoparticles were synthesized using wet impregnation method, and activated carbon from rice straw (RS) prepared through chemical route. Methods: The nano-composites ZnO-AC series were prepared with different ZnO:AC ratio of 10, 20, 50, and 70% to optimize the zinc oxide nanoparticles used. The obtained composites were characterized by FE-SEM, XRD, SBET, and optical techniques then used for the photo-degradation of Malachite green dye (MG) under visible light. Results: It was found that 10ZnO-AC exhibited excellent visible light photo-catalytic performance. The ·OH radicals’ formation is matching with photo-activity of the prepared composites. The photo-degradation efficiency of MG increased from 63% to 93%, when the 10ZnO-AC photocatalyst amount was increased from 0.5 to 6 g/L. Conclusion: The GC-MS technique was used to analyze the intermediates formed; up to 15 kinds of chemicals were identified as the degradation products.

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