Evaluation of watermelon peel, banana peel and bay leaves hydrochars as green catalysts in the degradation of malachite green by thermally activated persulfate oxidation method

2022 ◽  
Vol 304 ◽  
pp. 114311
Author(s):  
Erdal Yabalak ◽  
Firas Elneccar
Keyword(s):  
Malachite Green ◽  
Banana Peel ◽  
Oxidation Method ◽  
Persulfate Oxidation ◽  
Thermally Activated ◽  
Activated Persulfate

scholarly journals Dewatering of drilling sludge by ultrasound assisted Fe(ii)-activated persulfate oxidation

RSC Advances ◽  
2018 ◽  
Vol 8 (52) ◽  
pp. 29756-29766 ◽  
Author(s):  
Liyan Liu ◽  
Hao Yan ◽  
Chao Yang ◽  
Guorui Zhu
Keyword(s):  
Oxidation Method ◽  
Persulfate Oxidation ◽  
Ultrasound Assisted ◽  
Drilling Sludge ◽  
Activated Persulfate

An ultrasound assisted Fe(ii)-activated persulfate oxidation method was put forward to improve the dewaterability of drilling sludge in this research.

Thermally activated persulfate oxidation of NAPL chlorinated organic compounds: effect of soil composition on oxidant demand in different soil-persulfate systems

2017 ◽  
Vol 75 (8) ◽  
pp. 1794-1803 ◽  
Author(s):  
Jialu Liu ◽  
Zhehua Liu ◽  
Fengjun Zhang ◽  
Xiaosi Su ◽  
Cong Lyu
Keyword(s):  
Organic Compounds ◽  
Mineral Content ◽  
Removal Rate ◽  
Soil Types ◽  
Soil Composition ◽  
Persulfate Oxidation ◽  
Chlorinated Volatile Organic Compounds ◽  
Thermally Activated ◽  
Soil Components ◽  
Activated Persulfate

This study investigates the interaction of persulfate with soil components and chlorinated volatile organic compounds (CVOCs), using thermally activated persulfate oxidation in three soil types: high sand content; high clay content; and paddy field soil. The effect of soil composition on the available oxidant demand and CVOC removal rate was evaluated. Results suggest that the treatment efficiency of CVOCs in soil can be ranked as follows: cis-1,2-dichloroethene > trichloroethylene > 1,2-dichloroethane > 1,1,1-trichloroethane. The reactions of soil components with persulfate, shown by the reduction in soil phase natural organics and mineral content, occurred in parallel with persulfate oxidation of CVOCs. Natural oxidant demand from the reaction of soil components with persulfate exerted a large relative contribution to the total oxidant demand. The main influencing factor in oxidant demand in paddy-soil-persulfate systems was natural organics, rather than mineral content as seen with sand and clay soil types exposed to the persulfate system. The competition between CVOCs and soil components for oxidation by persulfate indicates that soil composition exhibits a considerable influence on the available oxidant demand and CVOC removal efficiency. Therefore, soil composition of natural organics and mineral content is a critical factor in estimating the oxidation efficiency of in-situ remediation systems.

Ultrasound assisted, thermally activated persulfate oxidation of coal tar DNAPLs

2016 ◽  
Vol 318 ◽  
pp. 497-506 ◽  
Author(s):  
Libin Peng ◽  
Li Wang ◽  
Xingting Hu ◽  
Peihui Wu ◽  
Xueqing Wang ◽  
...  
Keyword(s):  
Coal Tar ◽  
Persulfate Oxidation ◽  
Thermally Activated ◽  
Ultrasound Assisted ◽  
Activated Persulfate

scholarly journals Electro-activated persulfate oxidation of malachite green by boron-doped diamond (BDD) anode: effect of degradation process parameters

2020 ◽  
Vol 81 (5) ◽  
pp. 925-935 ◽  
Author(s):  
Dongtian Miao ◽  
Guoshuai Liu ◽  
Qiuping Wei ◽  
Naixiu Hu ◽  
Kuangzhi Zheng ◽  
...  
Keyword(s):  
Malachite Green ◽  
Current Density ◽  
Degradation Process ◽  
Organic Content ◽  
Boron Doped Diamond ◽  
Persulfate Oxidation ◽  
Bdd Anode ◽  
Toc Removal ◽  
Boron Doped ◽  
Activated Persulfate

Abstract In this paper, boron-doped diamond (BDD) electro-activated persulfate was studied to decompose malachite green (MG). The degradation results indicate that the decolorization performance of MG for the BDD electro-activated persulfate (BDD-EAP) system is 3.37 times that of BDD electrochemical oxidation (BDD-EO) system, and BDD-EAP system also exhibited an enhanced total organic content (TOC) removal (2.2 times) compared with BDD-EO system. Besides, the degradation parameters such as persulfate concentration, current density, and pH were studied in detail. In a wider range of pH (2–10), the MG can be efficiently removed (>95%) in 0.02 M persulfate solution with a low current density of 1.7 mA/cm2 after 30 min. The BDD-EAP technology decomposes organic compounds without the diffusion limitation and avoids pH adjustment, which makes the EO treatment of organic wastewater more efficient and more economical.

Degradation of volatile organic compounds with thermally activated persulfate oxidation

Chemosphere ◽  
2005 ◽  
Vol 61 (4) ◽  
pp. 551-560 ◽  
Author(s):  
Kun-Chang Huang ◽  
Zhiqiang Zhao ◽  
George E. Hoag ◽  
Amine Dahmani ◽  
Philip A. Block
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Persulfate Oxidation ◽  
Thermally Activated ◽  
Volatile Organic ◽  
Activated Persulfate
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