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The treatment of black-odorous water using tower bipolar electro-flocculation including the removal of

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

《环境科学与工程前沿（英文）》 2021年 第15卷 第2期 doi: 10.1007/s11783-020-1310-5

摘要： Abstract • An innovative bubble column tower BPE was designed to treat the black-odorous water. • PO43−, S2− and turbidity were removed, and dissolved oxygen was enriched in the BPE. • An aluminum bipolar electrode gave the best oxygen enrichment and pollutant removal. • Changes of microorganisms confirmed the improvement in water quality achieved. The large amount of municipal wastewater discharged into urban rivers sometimes exceeds the rivers’ self-purification capacity leading to black-odorous polluted water. Electro-flocculation has emerged as a powerful remediation technology. Electro-flocculation in a bubble column tower with a bipolar electrode (BPE) was tested in an attempt to overcome the high resistance and weak gas-floatation observed with a monopolar electrode (MPE) in treating such water. The BPE reactor tested had a Ti/Ta2O5-IrO2 anode and a graphite cathode with an iron or aluminum bipolar electrode suspended between them. It was tested for its ability to reduce turbidity, phosphate and sulphion and to increase the concentration of dissolved oxygen. The inclusion of the bipolar electrode was found to distinctly improved the system’s conductivity. The system’s electro-flocculation and electrical floatation removed turbidity, phosphate and sulphion completely, and the dissolved oxygen level improved from 0.29 to 6.28 mg/L. An aluminum bipolar electrode performed better than an iron one. Changes in the structure of the microbial community confirmed a significant improvement in water quality.

关键词： Black-odorous water     Bipolar electrodes     Flocculation     Floatation     Oxygen enrichment     Turbidity    

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Rapid control of black and odorous substances from heavily-polluted sediment by oxidation: Efficiency

Kun Li, Min Yang, Jianfeng Peng, Ruiping Liu, Tista Prasai Joshi, Yaohui Bai, Huijuan Liu

《环境科学与工程前沿（英文）》 2019年 第13卷 第6期 doi: 10.1007/s11783-019-1171-y

摘要： Oxidants were proposed to rapidly control black and odorous substances in sediments. NaClO and KMnO4 had excellent efficiency to remove black and odorous substances. NaClO dramatically accelerated the release of organics, NH4+-N, P, and heavy-metals. Moderate oxidation had a limited effect on microbial communities. NaClO of 0.2 mmol/g was viewed to be the optimum option. The control of black and odorous substances in sediments is of crucial importance to improve the urban ecological landscape and to restore water environments accordingly. In this study, chemical oxidation by the oxidants NaClO, H2O2, and KMnO4 was proposed to achieve rapid control of black and odorous substances in heavily-polluted sediments. Results indicate that NaClO and KMnO4 are effective at removing Fe(II) and acid volatile sulfides. The removal efficiencies of Fe(II) and AVS were determined to be 45.2%, 94.1%, and 93.7%, 89.5% after 24-h exposure to NaClO and KMnO4 at 0.2 mmol/g, respectively. Additionally, rapid oxidation might accelerate the release of pollutants from sediment. The release of organic matters and phosphorus with the maximum ratios of 22.1% and 51.2% was observed upon NaClO oxidation at 0.4 mmol/g. Moreover, the introduction of oxidants contributed to changes in the microbial community composition in sediment. After oxidation by NaClO and KMnO4 at 0.4 mmol/g, the Shannon index decreased from 6.72 to 5.19 and 4.95, whereas the OTU numbers decreased from 2904 to 1677 and 1553, respectively. Comparatively, H2O2 showed a lower effect on the removal of black and odorous substances, pollutant release, and changes in sediment microorganisms. This study illustrates the effects of oxidant addition on the characteristics of heavily polluted sediments and shows that chemical oxidants may be an option to achieve rapid control of black and odorous substances prior to remediation of water environments.

关键词： Oxidants     Heavily polluted sediment     Black and odorous substances     Release behaviors     Microorganism    

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Sea salt bittern-driven forward osmosis for nutrient recovery from black water: A dual waste-to-resource

Wenchao Xue, May Zaw, Xiaochan An, Yunxia Hu, Allan Sriratana Tabucanon

《环境科学与工程前沿（英文）》 2020年 第14卷 第2期 doi: 10.1007/s11783-019-1211-7

摘要： • A dual “waste-to-resource” application of FO was proposed. • Performance of sea salt bittern as an economic FO draw solution was evaluated. • High quality struvite recovery from black water using FO was demonstrated. • Feed pH is a key factor to control the form of recovered phosphorous. A dual “waste-to-resource” innovation in nutrient enrichment and recovery from domestic black water using a sea salt bittern (SSB)-driven forward osmosis (FO) process is proposed and demonstrated. The performance of SSB as a “waste-to-resource” draw solution for FO was first evaluated. A synthetic SSB-driven FO provided a water flux of 25.67±3.36 L/m2⋅h, which was 1.5‒1.7 times compared with synthetic seawater, 1 M NaCl, and 1 M MgCl2. Slightly compromised performance regarding reverse solute selectivity was observed. In compensation, the enhanced reverse diffusion of Mg2+ suggested superior potential in terms of recovering nutrients in the form of struvite precipitation. The nutrient enrichment was performed using both the pre-filtered influent and effluent of a domestic septic tank. Over 80% of phosphate-P recovery was achieved from both low- and high-strength black water at a feed volume reduction up to 80%‒90%. With an elevated feed pH (~9), approximately 60%‒85% enriched phosphate-P was able to be recovered in the form of precipitated stuvite. Whereas the enrichment performance of total Kjeldahl nitrogen (TKN) largely differed depending on the strength of black water. Improved concentration factor (i.e., 3-folds) and retention (>60%) of TKN was obtained in the high-nutrient-strength black water at a feed volume reduction of 80%, in comparison with a weak TKN enrichment observed in low-strength black water. The results suggested a good potential for nutrient recovery based on this dual “waste-to-resource” FO system with proper management of membrane cleaning.

关键词： Forward osmosis     Sea salt bittern     Black water     Nutrient recovery     pH    

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A study on rapid acid chrome black (MB 7) spectrophotometric determination of ClO

Jing DONG, Huilong WANG

《化学科学与工程前沿（英文）》 2011年 第5卷 第2期   页码 245-251 doi: 10.1007/s11705-010-1003-x

摘要： Experiments were conducted to investigate the degradation of 2,6-dinitro- -cresol (DNPC) in the chlorine dioxide (ClO ) catalytic oxidation process. Pure aluminum oxide was used as the catalyst in this process. The degradation of DNPC by ClO using aluminum oxide as catalyst was systematically studied by varying the experimental parameters, such as pH values, catalyst dosage, the initial concentration of DNPC and ClO , reaction time, etc. Under optimal condition (DNPC concentration 39 mg·L , ClO concentration 0.234 g·L , reaction time 15 min, catalyst dosage 4.7 g·L and pH 4.32), almost complete degradation of DNPC can be achieved. The kinetic studies revealed that the ClO catalytic oxidation degradation of DNPC followed pseudo-first-order kinetics with respect to both ClO and DNPC concentration. The repetitive use of the catalyst was investigated along sequential feed-batch trials. The catalyst performed efficiently after five runs. In addition, a simple and convenient method for the determination of ClO in water was developed by using acid chrome black 7 (MB 7) spectrophotometry in this paper.

关键词： chlorine dioxide     2     6-dinitro-p-cresol (DNPC)     aluminum oxide     water treatment     MB 7 spectrophotometry    

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Preparation of nZVI embedded modified mesoporous carbon for catalytic persulfate to degradation of reactive black

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1372-4

摘要：

• The MCNZVI is prepared as an interesting material for PS activation.

关键词： MCNZVI     Core-shell structure     Reactive Black 5     Persulfate     Mechanism    

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Characteristics of typical dissolved black carbons and their influence on the formation of disinfection

《环境科学与工程前沿（英文）》 2022年 第16卷 第12期 doi: 10.1007/s11783-022-1585-9

摘要：

● The physicochemical and structural properties of DBC were characterized.

关键词： Dissolved black carbon (DBC)     Chlorine     Chloramine     Disinfection by-products (DBPs)     Disinfection by-products formation potential (DBPFP)    

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oxide for active and intelligent packaging: comparison of anthocyanins source from purple tomato or black

《化学科学与工程前沿（英文）》 2023年 第17卷 第6期   页码 704-715 doi: 10.1007/s11705-022-2270-z

摘要： The multifunctional films was prepared by blending chitosan and nano-ZnO with purple tomato anthocyanins or black wolfberry anthocyanins. The properties of films functioned by anthocyanins source and nano-ZnO content were studied. It was found purple tomato anthocyanins showed more significant color change against pH than black wolfberry anthocyanins. The nano-ZnO were widely dispersed in matrix and enhanced the compatibility of anthocyanins with chitosan. However, the anthocyanins source influenced the properties of the films more slightly than nano-ZnO addition. The tensile strength, antioxidant and antibacterial effects of the chitosan films dramatically increased after cooperated by nano-ZnO and anthocyanins, which also enhanced with increase of nano-ZnO content, whereas the elongation at break of the composite films decreased. Especially, the anthocyanin and nano-ZnO promoted the antibacterial activity of films synergistically. Composite films made from black wolfberry anthocyanins exhibited higher mechanical performance than those made from purple tomato anthocyanins but weaker antibacterial effects. The purple tomato anthocyanins/chitosan and nano-ZnO/purple tomato anthocyanins/chitosan films effectively reflected pork spoilage, changing their colors from dark green to brown, indicating the potential for applications in active and intelligent food packaging.

关键词： bio-based     multifunction     colorimetric indicator     active and intelligent packaging    

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Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

《环境科学与工程前沿（英文）》 2023年 第17卷 第9期 doi: 10.1007/s11783-023-1711-3

摘要：

● Properties and performance relationship of CSBT photocatalyst were investigated.

关键词： Black TiO2     Core-shell structure     Property-performance relationship     Agro-industrial effluent     Environmental remediation    

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Community diversity and distribution of ammonia-oxidizing archaea in marsh wetlands in the black soil

Chunhong Chen, Hong Liang, Dawen Gao

《环境科学与工程前沿（英文）》 2019年 第13卷 第4期 doi: 10.1007/s11783-019-1146-z

摘要：

AOA amoA genes in the soils of the two wetlands affiliated with three lineages.

The main drivers of AOA community were pH and total organic carbon and ammonium.

The soil characteristics rather than the vegetation control the AOA community.

关键词： Ammonia-oxidizing archaea     amoA gene     Freshwater marsh     Diversity     Distribution    

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Contribution of black carbon to nonlinearity of sorption and desorption of acetochlor on sediment

Jianqiu LIU, Yaobin ZHANG, Hong CHEN, Yazhi ZHAO, Xie QUAN

《环境科学与工程前沿（英文）》 2009年 第3卷 第1期   页码 69-74 doi: 10.1007/s11783-008-0076-y

摘要： In order to investigate the contribution of various black carbon (BC) contents to nonlinearity of sorption and desorption isotherms for acetochlor on sediment, equilibrium sorption and desorption isotherms were determined to measure sorption and desorption of acetochlor in sediment amended with various amounts of BC. In this paper, two types of BC referred to as BC400 and BC500 were prepared at 400°C and 500°C, respectively. Higher preparation temperature facilitated the formation of micropores on BC to enhance its sorption capacity. Increase of the BC content obviously increased the sorption amount and reduced the desorption amount for acetochlor. When the BC500 contents in total organic carbon (TOC) increased from 0 to 60%, Freundlich sorption coefficient ( ) increased from 4.07 to 35.74, and desorption hysteresis became gradually obvious. When the content of BC in TOC was lower than 23%, the sorption isotherm had a significant linear correlation ( = 0.05). In case of desorption, a significant nonlinear change could be observed when the content of BC was up to 13%. Increase of BC content in the sediment would result in shifting the sorption-desorption isotherms from linearity to nonlinearity, which indicated that contribution of BC to nonlinear adsorption fraction became gradually remarkable.

关键词： black carbon (BC)     sorption     desorption     sediment    

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Effect of carbon black on the dynamic moduli of asphalt mixtures and its master curves

Chuangmin LI, Fanbo NING, Yuanyuan LI

《结构与土木工程前沿（英文）》 2019年 第13卷 第4期   页码 918-925 doi: 10.1007/s11709-019-0526-6

摘要： Modulus is one of the main parameters during the design of asphalt pavement structure, the newest specifications of China gives the dynamic moduli ranges of commonly used asphalt mixtures with base asphalt (BA) or styrene-butadiene-styrene modified asphalt (SBS MA), while the moduli ranges of mixtures with carbon black modified asphalt (CB MA) are not recommended. To investigate the CB effect on the dynamic moduli of CB MA mixtures, one commonly used asphalt mixture (AC-20) was designed with BA, SBS MA, and CB MA, respectively. Then, the uniaxial compression dynamic modulus tests were conducted at different temperatures and loading frequencies, the master curves of asphalt mixtures were analyzed based on the time-temperature equivalence principle. The results show that ith increasing loading frequency, the temperature dependence of dynamic moduli of all asphalt mixtures tend to be less obvious. Both SBS and CB can decrease the temperature sensitivity of asphalt mixture, the SBS MA mixture has the lowest temperature sensitivity, followed by CB MA and BA mixture. In addition, CB and SBS can obviously improve the dynamic modulus of the BA mixture, enhance the anti-deformation performance of pavement structure, and the improvement effect of CB is almost the same with SBS.

关键词： dynamic modulus     carbon black     master curve     modified asphalt     asphalt mixture    

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Enhancement of the electrocatalytic oxidation of antibiotic wastewater over the conductive black carbon-PbO

Xiangyu Wang, Yu Xie, Guizhen Yang, Jiming Hao, Jun Ma, Ping Ning

《环境科学与工程前沿（英文）》 2020年 第14卷 第2期 doi: 10.1007/s11783-019-1201-9

摘要： • A novel conductive carbon black modified lead dioxide electrode is synthesized. • The modified PbO2 electrode exhibits enhanced electrochemical performances. • BBD method could predict optimal experiment conditions accurately and reliably. • The modified electrode possesses outstanding reusability and safety. The secondary pollution caused by modification of an electrode due to doping of harmful materials has long been a big concern. In this study, an environmentally friendly material, conductive carbon black, was adopted for modification of lead dioxide electrode (PbO2). It was observed that the as-prepared conductive carbon black modified electrode (C-PbO2) exhibited an enhanced electrocatalytical performance and more stable structure than a pristine PbO2 electrode, and the removal efficiency of metronidazole (MNZ) and COD by a 1.0% C-PbO2 electrode at optimal conditions was increased by 24.66% and 7.01%, respectively. Results revealed that the electrochemical degradation of MNZ wastewater followed pseudo-first-order kinetics. This intimates that the presence of conductive carbon black could improve the current efficiency, promote the generation of hydroxyl radicals, and accelerate the removal of MNZ through oxidation. In addition, MNZ degradation pathways through a C-PbO2 electrode were proposed based on the identified intermediates. To promote the electrode to treat antibiotic wastewater, optimal experimental conditions were predicted through the Box-Behnken design (BBD) method. The results of this study suggest that a C-PbO2 electrode may represent a promising functional material to pretreat antibiotic wastewaters.

关键词： Conductive carbon black     PbO2 electrode     Metronidazole     Electrochemical oxidation     Box-Behnken design-response surface method    

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Adsorption property of direct fast black onto acid-thermal modified sepiolite and optimization of adsorption

Chengyuan SU, Weiguang LI, Yong WANG

《环境科学与工程前沿（英文）》 2013年 第7卷 第4期   页码 503-511 doi: 10.1007/s11783-012-0477-9

摘要： The adsorption of direct fast black onto acid-thermal modified sepiolite was investigated. Batch adsorption experiments were performed to evaluate the influences of experimental parameters such as initial dye concentration, initial solution pH and adsorbent dosage on the adsorption process. The three-factor and three-level Box-Behnken response surface methodology (RSM) was utilized for modeling and optimization of the adsorption conditions for direct fast black onto the acid-thermal modified sepiolite. The raw sepiolite was converted to acid-thermal modified sepiolite, and changes in the fourier transform infrared spectrum (FTIR) adsorption bands of the sample were noted at 3435 cm and 1427 cm . The zeolitic water disappeared and the purity of sepiolite was improved by acid-thermal modification. The decolorization rate of direct fast black adsorbed increased from 68.2% to 98.9% on acid-thermal modified sepiolite as the initial solution pH decreased from 10 to 2. When the adsorbent dosage reached to 2.5 g·L , 2.0 g·L , 1.5 g·L and 1.0 g·L , the decolorization rate was 90.3%, 86.7%, 61.0% and 29.8%, respectively. When initial dye concentration increased from 25 to 200 mg·L , the decolorization rate decreased from 91.9% to 60.0%. The RSM results showed that the interaction between adsorbent dosage and pH to be a significant factor. The optimum conditions were as follows: the adsorbent dosage 1.99 g·L , pH 4.22, and reaction time 5.2 h. Under these conditions, the decolorization rate was 95.1%. The three dimensional fluorescence spectra of direct fast black before and after treatment showed that the direct fast black was almost all adsorbed by the acid-thermal modified sepiolite.

关键词： direct fast black     acid-thermal modified sepiolite     adsorption     response surface methodology    

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Phenanthrene sorption to environmental black carbon in sediments from the Song-Liao watershed (China)

Jinghuan ZHANG, Mengchang HE, Chunye LIN, Ke SUN, Bin MEN, John L. ZHOU,

《环境科学与工程前沿（英文）》 2009年 第3卷 第4期   页码 434-442 doi: 10.1007/s11783-009-0150-0

摘要： Black carbon (BC) in ten contaminated sediments from the Song-Liao watershed, NE China, was isolated upon treatments using a combustion method at 375°C, and the isolates’ sorption isotherms for phenanthrene (Phen) were determined. All sorption isotherms were nonlinear and fitted well by the Freundlich model. A negative relation was found between Freundlich sorption nonlinearity parameter ( values) and BC/total organic carbon (TOC) content of the original sediments (=0.687, <0.01), indicating the dominance of BC in Phen sorption nonlinearity. The BC isolates from this industrialized region had values of 0.342 to 0.505 and log values of 6.02 to 6.42(μg·kg·OC)/(μg·L) for Phen. At a given , the BC had higher value than the original sediments, revealing a higher sorption capacity for BC. BC was responsible for 50.0% to 87.3% of the total sorption at =0.05 , clearly indicating the dominance of BC particles in overall sorption of Phen by sediments.

关键词： phenanthrene     sorption     black carbon     sediment     Song-Liao watershed    

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Observation of black carbon aerosol in Beijing, 2003

LOU Shujuan, MAO Jietai, WANG Meihua

《环境科学与工程前沿（英文）》 2007年 第1卷 第3期   页码 345-349 doi: 10.1007/s11783-007-0059-4

摘要： The objective of this study was to determine the black carbon concentration in Beijing in 2003. The aerosol properties were measured using an Aethalometer and a tapered element oscillating microbalance (TEOM) on the roof of the Physics Building of Peking University (39.99º N, 116.31º E) from July to August 2003 and from November 2003 to January 2004. The average black carbon (BC) concentrations in the summer and winter were 8.80 and 11.4 μg/m, respectively. During winter, two different cyclone cut offs were installed at the inlet of an aethalometer. The BC mass concentration in TSP, PM, and PM were obtained. The results indicated that in winter aerosol, 90% of BC exited in PM and 82.6% of BC exited in PM. The BC in PM accounted for 5.11% of the PM mass.

关键词： carbon concentration     Beijing     tapered element     August     aethalometer    

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标题 作者 时间 类型 操作

The treatment of black-odorous water using tower bipolar electro-flocculation including the removal of

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

期刊论文

Rapid control of black and odorous substances from heavily-polluted sediment by oxidation: Efficiency

Kun Li, Min Yang, Jianfeng Peng, Ruiping Liu, Tista Prasai Joshi, Yaohui Bai, Huijuan Liu

期刊论文

Sea salt bittern-driven forward osmosis for nutrient recovery from black water: A dual waste-to-resource

Wenchao Xue, May Zaw, Xiaochan An, Yunxia Hu, Allan Sriratana Tabucanon

期刊论文

A study on rapid acid chrome black (MB 7) spectrophotometric determination of ClO

Jing DONG, Huilong WANG

期刊论文

Preparation of nZVI embedded modified mesoporous carbon for catalytic persulfate to degradation of reactive black

期刊论文

Characteristics of typical dissolved black carbons and their influence on the formation of disinfection

期刊论文

oxide for active and intelligent packaging: comparison of anthocyanins source from purple tomato or black

期刊论文

Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

期刊论文

Community diversity and distribution of ammonia-oxidizing archaea in marsh wetlands in the black soil

Chunhong Chen, Hong Liang, Dawen Gao

期刊论文

Contribution of black carbon to nonlinearity of sorption and desorption of acetochlor on sediment

Jianqiu LIU, Yaobin ZHANG, Hong CHEN, Yazhi ZHAO, Xie QUAN

期刊论文

Effect of carbon black on the dynamic moduli of asphalt mixtures and its master curves

Chuangmin LI, Fanbo NING, Yuanyuan LI

期刊论文

Enhancement of the electrocatalytic oxidation of antibiotic wastewater over the conductive black carbon-PbO

Xiangyu Wang, Yu Xie, Guizhen Yang, Jiming Hao, Jun Ma, Ping Ning

期刊论文

Adsorption property of direct fast black onto acid-thermal modified sepiolite and optimization of adsorption

Chengyuan SU, Weiguang LI, Yong WANG

期刊论文

Phenanthrene sorption to environmental black carbon in sediments from the Song-Liao watershed (China)

Jinghuan ZHANG, Mengchang HE, Chunye LIN, Ke SUN, Bin MEN, John L. ZHOU,

期刊论文

Observation of black carbon aerosol in Beijing, 2003

LOU Shujuan, MAO Jietai, WANG Meihua

期刊论文