4.7 Article

The impact of recycling alum-humic-floc (AHF) on the removal of natural organic materials (NOM): Behavior of coagulation and adsorption

Journal

CHEMICAL ENGINEERING JOURNAL
Volume 284, Issue -, Pages 1049-1057

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.09.069

Keywords

Humic acid (HA); Alum-humic-floc (AHF); Adsorption capacity; Coagulation kinetic; Hydrogen bond

Funding

  1. Funds for Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07408001, 2014ZX07405002]
  2. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [ES201511]

Ask authors/readers for more resources

Recycling alum flocs may promote the removal of NOM during the coagulation process. The performance of alum-humic-floc (AHF), poly aluminum chloride (PACl) and AHF and PACl mixtures (AHF+PACl) in the removal of humic acid (HA) were comparatively evaluated in regards to their coagulation behaviors and floc structure characteristics. Jar tests were conducted at neutral pH and in a dosage range from 6.11 to 26.49 mg Al/L. The dual coagulant, AHF with additional PACl, could significantly improve the removal efficiency of organic matter and residual turbidity, which probably depended on the physical adsorption and the charge neutralization mechanism. The experimental data using AHF fit with BET and Freundlich models, which indicated that the adsorption of HA onto AHF was a multilayer adsorption. Floc characterization was also performed to investigate the relationship between floc structure and organic matter removal. The highest removal efficiency of organic matter and residual turbidity occurred when using the combination of AHF with additional PACl as the coagulant, which suggested that fractal dimension of the flocs was the most significant factor in determining the removal of pollutants from the water solution. HA was released again into solution during floc breakage. The combination of AHF and PACl demonstrated a lower release of organic matter after breakage and the stronger dissolved organic carbon (DOC) removal capacity during re-growth process. The functional group on the AHF was the main factor in site-specific hydrogen bonding, which is the main mechanism for removal of HA. (C) 2015 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Chemistry, Medicinal

Circ_0001667 knockdown blocks cancer progression and attenuates adriamycin resistance by depleting NCOA3 via releasing miR-4458 in breast cancer

Yanfei Cui, Jing Fan, Wenbo Shi, Zuozhi Zhou

Summary: This study elucidated the crucial role of circ_0001667 in breast cancer, affecting tumor cell proliferation, migration, invasion, and chemoresistance by regulating the expression of miR-4458 and NCOA3.

DRUG DEVELOPMENT RESEARCH (2022)

Article Engineering, Electrical & Electronic

A cost-efficient joint target location and clock bias estimation technique using multiple time step measurements in mobile bistatic sonar

Chenglin Zhang, Qunfei Zhang, Wentao Shi, Weidong Wang, Jiajie Xu, Feifei Pang

Summary: The study proposes a recursive scheme relying on mobile bistatic sonar to estimate target location and clock bias accurately by acquiring measurement information at multiple time steps. Orthogonal transformation ensures computational efficiency and numerical reliability, while the CRLB is derived as a lower bound on estimating errors under Gaussian noise.

IET RADAR SONAR AND NAVIGATION (2022)

Article Engineering, Mechanical

Contact characteristic parameters modeling for the assembled structure with bolted joints

Wenbo Shi, Zhousuo Zhang

Summary: This study presents a new contact characteristic parameters model for bolted joint interfaces, which overcomes the shortcomings of homogeneous distributions of contact stiffness and damping in previous models. By transforming the contact pressure distribution into normal contact load distribution, it is found that the interfacial contact stiffness and damping exhibit significant inhomogeneous distributions.

TRIBOLOGY INTERNATIONAL (2022)

Article Chemistry, Physical

New mechanistic insights into the effect of cations on membrane fouling caused by anionic polyacrylamide

Bing Zhang, Heli Tang, Jinyu Chen, Bing Zhang, Yu Shen, Wenxin Shi

Summary: Understanding the effect of cations on membrane fouling is important, with higher ionic strength leading to increased membrane fouling and decreased flux recovery rate. Ca2+ was found to be more effective than Na+ in mitigating membrane fouling.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

Article Dentistry, Oral Surgery & Medicine

Oral colonization of Candida albicans and Streptococcus mutans in children with or without fixed orthodontic appliances: A pilot

Fang Yang, Marcia Dinis, Farnoosh Haghighi, Xuesong He, Wenyuan Shi, Nini Chaichanasakul Tran

Summary: This pilot investigation aimed to study the colonization of Candida albicans (Ca) and Streptococcus mutans (Sm) in adolescents undergoing fixed orthodontic therapy. The study found higher levels of Ca in saliva and occlusal plaque in the FOA group, while the control group had higher levels of Sm. Additionally, a disruption in the relationship between Ca and Sm was observed in the FOA group, indicating that the presence of FOAs disturbs the colonization of these pathogens in the oral cavity.

JOURNAL OF DENTAL SCIENCES (2022)

Article Chemistry, Physical

Electrochemical surface reconstructed Ptx(x=2,3)Si/PtSi/p-Si photocathodes for achieving high efficiency in photoelectrochemical H2 generation

Haoyue Zhang, Guangwei She, Jing Xu, Shengyang Li, Yun Liu, Jun Luo, Wensheng Shi

Summary: In this study, a Ptx(x=2,3)Si/PtSi/p-Si photocathode was designed and fabricated to improve the photovoltage and enhance the hydrogen evolution reaction kinetics for efficient H-2 generation via PEC. The use of dopant segregation elevated the Schottky barrier height, leading to a high photovoltage, while in situ formation of a high catalytic activity Ptx(x=2,3)Si layer on the photocathode significantly enhanced the HER kinetics. The photocathode achieved a favorable onset potential for HER and a high saturated photocurrent density, with a maximum ABPE of 5.8% and excellent stability in long-term PEC H-2 generation testing.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

Article Engineering, Electrical & Electronic

Sensor Selection Scheme considering Uncertainty Disturbance

Wentao Shi, Chen Dong, Zhou Lin, Bai Ke, Jin Yong

Summary: In this paper, a novel sensor selection method considering uncertainty disturbance is proposed for effective target detection in a multisensor cooperative detection network. The method models the sensor selection problem as a binary form optimization problem and quantifies the factors affecting the selection scheme. The proposed method ensures the minimum number of sensors and improves the accuracy of state estimation, as evidenced by simulation results.

JOURNAL OF SENSORS (2022)

Article Multidisciplinary Sciences

Perylenetetracarboxylic acid nanosheets with internal electric fields and anisotropic charge migration for photocatalytic hydrogen evolution

Yan Guo, Qixin Zhou, Jun Nan, Wenxin Shi, Fuyi Cui, Yongfa Zhu

Summary: This study synthesized perylenetetracarboxylic acid nanosheets with a thickness of approximately 1.5 nm and demonstrated their activity as highly efficient hydrogen evolution photocatalysts. The introduction of carboxyl groups increased the internal electric fields, promoting charge-carrier separation, and weakened charge-carrier recombination by migrating photogenerated electrons and holes to the edge and plane, respectively. Furthermore, the reduction potential and hydrophilic sites of perylenetetracarboxylic acid were enhanced. This work provides a strategy for designing future efficient photocatalysts.

NATURE COMMUNICATIONS (2022)

Article Cell & Tissue Engineering

Periodic Heat Stress Licenses EMSC Differentiation into Osteoblasts via YAP Signaling Pathway Activation

Wentao Shi, Zhe Wang, Lu Bian, Yiqing Wu, Mei HuiYa, Yanjun Zhou, Zhijian Zhang, Qing Wang, Peng Zhao, Xiaojie Lu

Summary: This study found that periodic heat stress promotes the differentiation of EMSCs into osteoblasts, and YAP plays a key role in regulating the TG2 response.

STEM CELLS INTERNATIONAL (2022)

Article Chemistry, Multidisciplinary

Achieving Highly Reversible Zinc Anodes via N, N-Dimethylacetamide Enabled Zn-Ion Solvation Regulation

Fangfang Wu, Yuchao Chen, Yulong Chen, Ruilian Yin, Yancong Feng, Dong Zheng, Xilian Xu, Wenhui Shi, Wenxian Liu, Xiehong Cao

Summary: Optimization of electrolyte composition is a practical way to improve the performance of aqueous zinc-ion batteries (ZIBs). In this study, a mixture electrolyte containing 10 vol% of N,N-Dimethylacetamide (DMA) and ZnSO4 was used to enhance the reversibility of Zn plating/stripping. It was found that DMA has the ability to reconstruct the solvation structure of Zn2+ and inhibit dendrite growth on Zn anode.

SMALL (2022)

Article Cell & Tissue Engineering

Drug-free in vitro activation combined with 3D-bioprinted adipose-derived stem cells restores ovarian function of rats with premature ovarian insufficiency

Qian Li, Jiahua Zheng, Zhongkang Li, Yanlai Xiao, Mingle Zhang, Wenxin Shi, He Gao, Xianghua Huang, Jingkun Zhang

Summary: The 3D-bioprinted engineering ovary, combining drug-free IVA and ADSCs, has the potential to ameliorate impaired ovarian function in rats with POI by promoting angiogenesis and restoration of hormone levels.

STEM CELL RESEARCH & THERAPY (2022)

Article Engineering, Environmental

High-efficiently capturing trace thallium (?) from wastewater via the prussian blue@polytetrafluoroethylene hybrid membranes

Yiwen Shi, Lei Huang, Sakil Mahmud, Gaosheng Zhang, Huosheng Li, Yuqi Wang, Tangfu Xiao, Qingyi Zeng, Zhiquan Liu, Huarong Yu, Zhu Xiong

Summary: In this study, a hybrid membrane PB@PDA/PEI-M-1 was successfully fabricated for high-efficient removal of thallium (Tl). The membrane showed excellent capture ability for Tl(I) with high selectivity and achieved a higher adsorption capacity compared to previous studies. The results demonstrated the feasibility of PB@PDA/PEI-M-1 technology in a complicated environment.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Business, Finance

Buddhism and M&A performance: Evidence from China

Wen Shi, Xiaogang Bi

Summary: This research examines the impact of Buddhism on mergers & acquisitions (M&As) performance using data from 4622 M&A transactions of Chinese public firms between 2004 and 2018. The findings provide ample evidence that acquirers located in regions with a higher intensity of Buddhism achieve better short-term and long-term performance after the merger. Furthermore, the study reveals that state ownership plays a crucial role in mitigating this effect, and the value creation is driven by higher deal completion rates and fewer violation cases for acquiring firms. Finally, the study addresses the issue of endogeneity, and the results remain unchanged.

ACCOUNTING AND FINANCE (2023)

Article Environmental Sciences

Effects of the nutrient inhibition on the yield of DBPFPs by Microcystis aeruginosa

Liu Zhiquan, Wang Zhu, Huang Rui, Cui Fuyi, Hu Chun

Summary: This study investigated the formation of three disinfection byproduct formation potentials (DBPFPs) by Microcystis aeruginosa under nitrate and phosphate inhibition conditions. The results showed that the growth of M. aeruginosa was inhibited by excessive nitrate, but the concentration of DBPFPs only decreased slightly. Under nitrate inhibition, the productivity of DBPFPs increased by around 40%, primarily due to the increase in specific organic matters. The phosphate inhibition had a similar but smaller effect. The proportion of the three DBPFPs did not change under nutrient inhibition, with trichloromethane accounting for around 87% of the total DBPFPs.

JOURNAL OF WATER AND HEALTH (2023)

Article Environmental Sciences

Degradation of cyanobacterial neurotoxin β-N-methylamino-l-alanine (BMAA) using ozone process: influencing factors and mechanism

Boyin Yan, Chunyu Han, Zhiquan Liu, Guizhi Wu, Songxue Wang, Jincheng Li, Wenxiang Xia, Fuyi Cui

Summary: This study systematically investigated the effectiveness of BMAA degradation by ozone and found that in pure water, the removal rate of BMAA was almost 100%, but it was lower in actual water. BMAA was primarily degraded by direct oxidation of ozone molecules under acidic and near-neutral conditions, while indirect oxidation of hydroxyl radicals accounted for the main part under strong alkaline conditions. The pH value had a significant effect on the degradation of BMAA, with the fastest degradation rate at near-neutral pH. By-products were generated during the degradation process, and three by-products were identified. The degradation pathways of BMAA were proposed to be attributed to the fracture of C-N bonds.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2023)

Article Engineering, Environmental

A metal-phenolic network-assembled nanotrigger evokes lethal ferroptosis via self-supply loop-based cytotoxic reactions

Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu

Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

XAS and DFT investigation of atomically dispersed Cu/Co alloyed Pt local structures under selective hydrogenation of acetylene to ethylene

Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian

Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

A multifunctional emitter with synergistical adjustment of rigidity and flexibility for high-performance data-recording and organic light-emitting devices with hot exciton channel

Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma

Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Cobalt/nickel purification by solvent extraction with ionic liquids in millifluidic reactors: From single-channel to numbered-up configuration with solvent recycle

Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven

Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Environment-triggered nanoagent with programmed gas release performance for accelerating diabetic infected wound healing

Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai

Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Synergistic dopa-reinforced fluid hydrosol as highly efficient coal dust suppressant

Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang

Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

First principle-based rate equation theory for the carbonation kinetics of CaO with CO2 in calcium looping

Jinzhi Cai, Zhenshan Li

Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Significant enhancement of high-temperature capacitive energy storage in dielectric films through surface self-assembly of BNNS coatings

Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao

Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Medium entropy metal oxide induced *OH species targeted transfer strategy for efficient polyethylene terephthalate plastic recycling

Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu

Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

A novel environmental friendly and sustainable process for textile dyeing with sulphur dyes for cleaner production

Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag

Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Highly efficient and sustainable cationic polyvinyl chloride nanofibrous membranes for removal of E. coli and Cr (VI): Filtration and adsorption

Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao

Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Concerted proton-coupled electron transfer promotes NiCoP nanowire arrays for efficient overall water splitting at industrial-level current density

Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu

Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Self-limiting growth of thin dense LTA membranes boosts H2 gas separation performance

Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo

Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Prediction of phosphate adsorption amount, capacity and kinetics via machine learning: A generally physical-based process and proposed strategy of using descriptive text messages to enrich datasets

Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong

Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.

CHEMICAL ENGINEERING JOURNAL (2024)

Article Engineering, Environmental

Absorption of hydrophobic volatile organic compounds in renewable vegetable oils and esterified fatty acids: Determination of gas-liquid partitioning coefficients as a function of temperature

Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve

Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.

CHEMICAL ENGINEERING JOURNAL (2024)