Pre‐treatment of Industrial Wastewater Polluted with Lead Using Adsorbents and Ultrafiltration or Microfiltration Membranes

Katsou, Evina; Malamis, Simos; Haralambous, K.J.

doi:10.2175/106143010x12681059117256

Cited by 15 publications

(5 citation statements)

References 70 publications

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“…However, previous experimental work has shown that bentonite exhibits higher selectivity for Pb compared to zeolite. [38] This means that the positive impact of minerals on biomass activity is not only associated with the amount of metals adsorbed on them, but also to other reasons such as the potential aggregation between mineral and sludge particles. In the case of zinc, the adsorption capacity of minerals coincides with the decreasing order of sludge inhibition (bentonite > zeolite).…”

Section: Monascus Rubermentioning

confidence: 99%

Investigation of the inhibitory effects of heavy metals on heterotrophic biomass activity and their mitigation through the use of natural minerals

Malamis

Katsou

Daskalakis

et al. 2012

Journal of Environmental Science and Health, Part A

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This study examined the inhibitory effects of lead, copper, nickel and zinc on heterotrophic biomass and their potential mitigation through the use of low-cost, natural minerals. Activated sludge was placed in batch reactors and specific heavy metal concentrations were added. Subsequently, the biomass specific oxygen uptake rate (sOUR) was determined to assess the level of biomass inhibition. Biomass inhibition by heavy metals followed the order Cu(2+)>Pb(2+)>Zn(2+)>Ni(2+), with copper being the most toxic metal, causing high inhibition of heterotrophic biomass even at relatively low concentrations (i.e. 10 mg·L(-1)). Zn had very small toxic effect at 10 mg·L(-1), while at 40 mg·L(-1) the level of biomass inhibition reached 80%. Nickel stimulated activated sludge activity at concentrations of the order of 10 mg·L(-1). The addition of 10 g·L(-1) bentonite and zeolite in activated sludge resulted in the decrease of the inhibitory effect of heavy metals on biomass respiratory activity. In some cases, mineral addition was very favorable as inhibition was reduced from 69-90% to less than 55% and even up to 12%. The beneficial action of minerals is attributed both to the adsorption of heavy metals on the mineral and on the potential aggregation between mineral and sludge particles.

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Section: Monascus Rubermentioning

confidence: 99%

Investigation of the inhibitory effects of heavy metals on heterotrophic biomass activity and their mitigation through the use of natural minerals

Malamis

Katsou

Daskalakis

et al. 2012

Journal of Environmental Science and Health, Part A

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“…Pb 2+ is an important source of pollution in wastewater with a wide range of sources. Non-ferrous metal mining, lead storage batteries, electronics, metal electroplating, steel manufacturing and other industries will produce a large amount of lead-containing wastewater (Chen et al, 2021;Katsou et al, 2011). Pb 2+ is not degradable and can exist in the environment for a long time, causing the Pb 2+ content in water and soil to exceed the standard (Liu et al, 2013), and causing serious harm to human health through the food chain (EI-Eswed et al, 2017;Yuan et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Efficient solidification of Pb2+ by activated tungsten tailings and cement

Cheng¹,

Kuang²,

Zhu³

et al. 2023

Physicochem. Probl. Miner. Process.

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The preparation of cementing admixture from tailings and co-solidification of Pb2+ with cement is a green way to realize the resource utilization of tailings and treatment of the lead-containing wastewater. In this paper, the tungsten tailings were activated in different ways, and the mechanical properties of the tungsten tailings-cement solidified body with different activation systems and the solidification behavior of Pb2+ were studied. The phase and microstructure of the hydrated product were characterized by XRD, FT-IR, SEM and EDS. The results showed that the curing effect of Pb2+ was obviously different of different activation systems, and the curing effect of the solidified body of the ternary composite activation system (TCAS) was the best, second only to the pure cement system (PCS). Different activation methods have a significant impact on the mechanical properties of the solidified body. With the increase of the Pb2+ content, the compressive strength of the solidified body gradually decreased, the Pb2+ leaching concentration gradually increased; with the extension of the curing age, the compressive strength gradually increased, and the Pb2+ leaching concentration gradually decreased. In particular, the compressive strength of the 28d solidified body was 31.43 MPa and the leaching concentration of Pb2+ was only 0.38 mg/L when the Pb2+ content was 5%. The phase, microstructure and EDS results of the hydration products showed that Pb2+ was mainly solidified in the C-S-H gel.

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“…The application of UF or MF membranes combined with natural minerals for the pre-treatment of wastewater containing high amounts of lead was investigated (Katsou et al, 2011b). At pH 5-6, the dominant removal mechanism was precipitation/complexation, while mineral adsorption enhanced lead removal.…”

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confidence: 99%

Membrane Processes

Pellegrin¹,

Greiner²,

Aguinaldo³

et al. 2012

Water Environment Research

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This review, for literature published in 2011, contains information related to membrane processes for municipal and industrial applications. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following topics: pretreatment, membrane bioreactor (MBR) configuration, design, nutrient removal, operation, industrial treatment, fixed film and anaerobic membrane systems, reuse, microconstituents removal, membrane technology advances, membrane fouling, and modeling. Other sub-sections of the Treatment Systems section that might relate to this literature review include: Biological Fixed-Film Systems, Activated Sludge and Other Aerobic Suspended Culture Processes, Anaerobic Processes, Water Reclamation and Reuse. The following sections might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants. Pretreatment Evaluations of membranes used for pretreatment are typically as a pretreatment to improve reverse osmosis (RO) performance. For the Miami-Dade County indirect potable reuse (IPR) project, the selection of a microfiltration (MF) system for RO pre-treatment required review of the various membrane configurations, and operational and cleaning

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Pre‐treatment of Industrial Wastewater Polluted with Lead Using Adsorbents and Ultrafiltration or Microfiltration Membranes

Cited by 15 publications

References 70 publications

Investigation of the inhibitory effects of heavy metals on heterotrophic biomass activity and their mitigation through the use of natural minerals

Investigation of the inhibitory effects of heavy metals on heterotrophic biomass activity and their mitigation through the use of natural minerals

Efficient solidification of Pb<sup>2+</sup> by activated tungsten tailings and cement

Membrane Processes

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