A simple method to prepare poly(amic acid)-modified biomass for enhancement of lead and cadmium adsorption

Yu, Jiahui; Tong, Mi; Sun, Xin; Li, Buhai

doi:10.1016/j.bej.2006.10.012

Cited by 97 publications

(51 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…15 Chemical modification of biomass may create derivatives with altered metal binding abilities and affinities. 6,119,120 Aspergillus niger mycelium was modified by introducing additional carboxy or ethyldiamino groups which increased metal biosorption. 121 Eukaryotic metallothioneins and other metal binding peptides have been expressed in E. coli as fusions to membrane or www.interscience.wiley.com/jctb membrane-associated proteins such as LamB, an outer membrane protein.…”

Section: Which Biosorbents?mentioning

confidence: 99%

Biosorption: critical review of scientific rationale, environmental importance and significance for pollution treatment

Gadd

2008

J of Chemical Tech & Biotech

1,124

642

View full text Add to dashboard Cite

Biosorption may be simply defined as the removal of substances from solution by biological material. Such substances can be organic and inorganic, and in gaseous, soluble or insoluble forms. Biosorption is a physico-chemical process and includes such mechanisms as absorption, adsorption, ion exchange, surface complexation and precipitation. Biosorption is a property of both living and dead organisms (and their components) and has been heralded as a promising biotechnology for pollutant removal from solution, and/or pollutant recovery, for a number of years, because of its efficiency, simplicity, analogous operation to conventional ion exchange technology, and availability of biomass. Most biosorption studies have carried out on microbial systems, chiefly bacteria, microalgae and fungi, and with toxic metals and radionuclides, including actinides like uranium and thorium. However, practically all biological material has an affinity for metal species and a considerable amount of other research exists with macroalgae (seaweeds) as well as plant and animal biomass, waste organic sludges, and many other wastes or derived bio-products. While most biosorption research concerns metals and related substances, including radionuclides, the term is now applied to particulates and all manner of organic substances as well. However, despite continuing dramatic increases in published research on biosorption, there has been little or no exploitation in an industrial context. This article critically reviews aspects of biosorption research regarding the benefits, disadvantages, and future potential of biosorption as an industrial process, the rationale, scope and scientific value of biosorption research, and the significance of biosorption in other waste treatment processes and in the environment.

show abstract

Section: Which Biosorbents?mentioning

confidence: 99%

Biosorption: critical review of scientific rationale, environmental importance and significance for pollution treatment

Gadd

2008

J of Chemical Tech & Biotech

1,124

642

View full text Add to dashboard Cite

show abstract

“…2b, two new peaks at 1545 and 1402 cm −1 are observed, which can be assigned to C=O asymmetric and symmetric stretching in carboxylate ions. 20 The peak at 3344 cm −1 broadened and shifted to 3415 cm…”

Section: Results and Discussion Preparation And Characterization Of Tmentioning

confidence: 98%

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb²⁺, Cd²⁺ and Cu²⁺

Tong

Sun

et al. 2007

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

In this study, the graft copolymerization of methacrylic acid onto the biomass of baker's yeast was carried out in aqueous medium using potassium persulfate (PPS) as initiator. The poly (methacrylic acid) modified biomass obtained was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and microscopic analyses. The number of functional groups was determined by potentiometric titration. The adsorption capacity of the modified biomass for Pb 2+ , Cd 2+ and Cu 2+ showed a significant increase compared with the pristine biomass, due to the presence of a large number of functional groups. According to the Langmuir equation, the maximum uptake capacities (q m ) for Pb 2+ , Cd 2+ and Cu 2+ were 243.9, 108.7 and 73.5 mg g −1 , respectively. Adsorption kinetics study showed that completion of the adsorption process needed only 30 min. The loaded biosorbent was regenerated using EDTA solution and used repeatedly three times with little loss of uptake capacity. Good results were obtained when the modified biomass was used to treat simulated wastewater containing Pb 2+ , Cd 2+ and Cu 2+ .

show abstract

“…Likewise, the presence of chlorine, which is found in the analyzed wastewater, enhances the assimilation of cadmium due to the formation of cadmium compounds [27,28]. Therefore, a very effective uptake of this heavy metal by both Chlorella vulgaris and Scenedesmus armatus was obtained.…”

Section: The Ph Influencementioning

confidence: 99%

The Effect of Biomass (Chlorella vulgaris, Scenedesmus armatus) Concentrations on Zn 2+ , Pb 2+ and Cd 2+ Biosorption from Zinc Smelting Wastewater

Zabochnicka-Świątek

Rygała

2017

Eng. Prot. Environ.

View full text Add to dashboard Cite

Non-modified and chemically modified algal biomass of Chlorella vulgaris and Scenedesmus armatus were chosen to examine their Zn 2+ , Pb 2+ and Cd 2+ sorption activity. The dry biomass was chemically modified with 1M HNO3 in order to determine the influence of acid--treatment on the heavy metal ions removal rate. The heavy metal uptake process was found to be rapid and very efficient. The sorption process of heavy metals is highly pH-dependent. It influences heavy metal forms in the solution, and functional groups located on the cell surface. The effectiveness of biosorption depends also on the biomass concentration and its modifications. The highest adsorption capacities of both, Chlorella vulgaris and Scenedesmus armatus towards zinc, lead and cadmium ions were found for the lowest sorbent concentrations. Batch experiments showed that the differences between uptake by non-modified and acid-modified biomass are relatively small. It can be due to the fact that non-modified algal biomass exhibits high sorption capacity.

show abstract

A simple method to prepare poly(amic acid)-modified biomass for enhancement of lead and cadmium adsorption

Cited by 97 publications

References 26 publications

Biosorption: critical review of scientific rationale, environmental importance and significance for pollution treatment

Biosorption: critical review of scientific rationale, environmental importance and significance for pollution treatment

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb²⁺, Cd²⁺ and Cu²⁺

The Effect of Biomass (Chlorella vulgaris, Scenedesmus armatus) Concentrations on Zn 2+ , Pb 2+ and Cd 2+ Biosorption from Zinc Smelting Wastewater

Contact Info

Product

Resources

About

A simple method to prepare poly(amic acid)-modified biomass for enhancement of lead and cadmium adsorption

Cited by 97 publications

References 26 publications

Biosorption: critical review of scientific rationale, environmental importance and significance for pollution treatment

Biosorption: critical review of scientific rationale, environmental importance and significance for pollution treatment

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb2+, Cd2+ and Cu2+

The Effect of Biomass (Chlorella vulgaris, Scenedesmus armatus) Concentrations on Zn 2+ , Pb 2+ and Cd 2+ Biosorption from Zinc Smelting Wastewater

Contact Info

Product

Resources

About

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb²⁺, Cd²⁺ and Cu²⁺