Biosorption of zinc by fungal mycelial wastes

Luef, Edith; Prey, Theodor; Kubicek, Christian P.

doi:10.1007/bf00167924

Cited by 135 publications

(52 citation statements)

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“…This shows that the biosorption mechanisms on fungal biomass surface is caused by interaction between heavy metals and different fungal species. Our results are similar to earlier studies which indicated the role of functional groups on fungal cell surface and the formation of complex bond among metal ions and various functional binding groups 18,19 . The rate of biosorption increased with increase in agitation speed ( Figure 5).…”

supporting

confidence: 93%

<i>In vitro</i> Compatibility of Fungi for the Biosorption of Zinc(II) and Copper(II) from Electroplating Effluent

et al. 2017

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The present study describes the potential of mixed fungal isolates, i.e. Aspergillus niger, Penicillium chrysogenum and Rhizopus oryzae for the removal of zinc(II) and copper(II) from aquatic environments. Capacity of mixed fungal biomass to adsorb Zn(II) and Cu(II) were studied in batch sorption experiments as bioremediators. Optimal conditions from contact time, pH, initial metal ion concentration and temperature for remediation of Zn(II) and Cu(II) were studied. Typically, the uptake of Zn(II) and Cu(II) rises with increasing pH up to 4.0. Optimal metal concentration was 150 mg/l when the maximum removal of copper and zinc was 69.5% and 30.3% respectively, was observed at initial metal concentration. Maximum uptake for metals was achieved after 15 min. The maximum biosorption for copper and zinc by selected fungi was achieved at 7.0 g of biosorbent. IR spectrum of three fungal species showed the presence of C=O groups, amine and amide N-H functional stretch.Keywords: Biosorption, copper, electroplating effluent, fungal isolates, zinc.WASTEWATER during electroplating activities involves poisonous heavy metals like chromium, mercury, zinc, nickel, cadmium, phosphorus and copper which build up in the food chain and cause different pathological states 1,2 . In recent years, association of different microbes has been used for wastewater treatment as bioremediators, as it was considered to have greater capability over pure and single isolates. The axenic cultures were devised to be mineralized rapidly and completely by the metabolic activity of different microorganisms 3 . The interactions between different heavy metals and microorganisms might be due to antagonistic, additive effects or synergic. These interactions might be multifaceted and distinguished which depends on the type of heavy metal ion and microbial species consortium. The collective effect of different heavy metals may be toxicity or growth stimulation in the same microbial consortium assorted from the additive effect of the single metal ions 4 . Fungi have diverse mechanisms for bioremediation of heavy metals, including metal uptake by cell-wall components, accumulation inside the cell or extracellular chelation by phytochelatins and metal lothioneins 5 . Waste samples were collected from a polluted water source near Al-Madina electroplating industry, Alipur Chattha, Pakistan, in sterilized and cleaned 1 l glass bottles with stopper. All samples were treated with 372 mg/l EDTA as the chelating agent to reduce toxicity in samples burdened with heavy metals. During examination, the samples were fresh, and were occurred immediately after return to the laboratory.The fungi were isolated by filtration of the electroplating waste for collection of fungal propagules using 0.45 m pore size filter paper 6 . The fungal spore suspension was prepared in 50 ml of saline solution, and 100 l of spore suspension was inoculated in sterilized petri dish with modified culture medium consisting of aureomycin (0.35 mg/l), glucose (10 g/l), rose bengal (0.035 mg/l), Cu...

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confidence: 93%

<i>In vitro</i> Compatibility of Fungi for the Biosorption of Zinc(II) and Copper(II) from Electroplating Effluent

et al. 2017

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“…E.coli was found to be absent on all the sampling sites. Various microbial species, for example, microorganisms, fungi are known to be appropriate for adsorbing heavy metals on their surface and 1607 additionally aggregating inside their structure (Campbell and Martin, 1990;Luef, 1991;Mitani and Misic, 1991;Vinita and Radhanath, 1992). It has been shown that bacteria and fungi isolated from polluted environment are frequently tolerant to higher levels of metals than those isolated from unpolluted areas and that tolerant microorganisms are found at higher frequencies in polluted habitats.…”

Section: Results and Discussion:-mentioning

confidence: 99%

Assessment of Physico Chemical, Microbial Characteristics and Heavy Metals Contamination at E Waste Dumping Sites at Ahmedabad, Gujarat.

Kumar¹,

Fulekar²

2017

IJAR

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“…Padatan tersebut sebanyak 0,5 gram yang dibungkus dalam kertas saring direndam dalam larutan Zn 2+ dan dikocok menggunakan shaker dengan kecepatan 120 rpm selama beberapa jam. Sampling dilakukan setiap 30 menit sebanyak tiga kali dan masing-masing hasil sampling disentrifugasi pada kecepatan 4000 rpm selama 10 menit dan ditentukan konsentrasi Zn 2+ pada masing-masing perlakuan (Luef et al, 2004).…”

Section: Modifikasi Biomassa S Cerevisiaeunclassified

“…Perlakuan ini juga dapat melepaskan polimer polisakarida yang memiliki afinitas yang tinggi terhadap ion logam tertentu (Loaec, 1997). Perendaman biomassa dengan larutan NaOH terbukti telah meningkatkan kapasitas penyerapan Zn 2+ pada Aspergillus niger (Luef et al, 2004) pada permukaan sel melalui reaksi browning non-enzimatik akibat pemanasan (Loaec, 1997). Pemanasan ini juga berfungsi untuk mematikan S. cerevisiae.…”

Section: Modifikasi Biomassa S Cerevisiaeunclassified

Biosorpsi logam Zn oleh biomassa Saccharomyces cerevisiae *) Biosorption of Zn metal by Saccharomyces cerevisiae biomass

KRESNAWATY¹,

TRI-PANJI²

2016

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SummaryHeavy metal in waste water potentiallycauses environmental pollution. Generally,heavy metal pollutions come from metalplating, textile, latex-rubber goods, and otherindustries. The process of latex-rubber goodindustries uses heavy metal in the form ofZnO as accelerator for rubber vulcanizationprocess, so that Zn 2+ ion exists in wastewatereffluents in concentration as much as 300 ppm,whereas the maximum limit allowed is 2.5 ppm.The chemical way generally used to decreaseZn 2+ concentration in wastewater effluents isby adding bases, NaOH or Ca(OH) 2 until pHreached 11, hence this metal is precipitated asits hydroxide. However, the way is done, isvery high cost and has a risk of the emergencesecondary pollution caused by excess base. Analternative way to absorb Zn 2+ consideredinexpensive is by using biosorbent in the formof Saccharomyces cerevisiae biomass frombioethanol industrial waste. The research wasconducted using artificial wastewater withZn 2+ ion concentration of 300 ppm and the pHwas adjusted to the range between 3-7.Biosorption was conducted by addition of freeS. cerevisiae biomass as well as byimmobilized cells on filter paper. Observationwas carried out for Zn 2+ concentration aftercontact time of two and five hours. The resultsof the research indicated that free andimmobilized S. cerevisiae biomass couldabsorb Zn 2+ metal and decreased itsconcentration from 250-300 ppm to 20-50 ppm.The optimum contact time was reached at onehour, while optimum sorption process occurredat pH 5. At low concentration, less than20 ppm S. cerevisiae biomass absorbed lessZn 2+ The NaOH-treated biomass showed bettersorption capabilities compared to cells treatedby formaldehyde or heat treatments. Thecontinue experiment showed the high capacityof biomass treated with NaOH to absorb Zn 2+ ,until concentration 24,02- 47,95 ppm in thefirst sampling and 1,15-10,99 ppm in thesecond sampling. Combination adsorptionprocess using charcoal and zeolite couldadsorp remain concentration of Zn 2+ , so thatcould reached the limit concentration-allowed.RingkasanLogam berat di dalam air limbahmerupakan penyebab pencemaran lingkunganyang potensial. Pencemaran logam berat padaumumnya berasal dari industri penyepuhanlogam, tekstil, barang jadi lateks, serta industrilain. Pada proses industri barang jadi lateksdigunakan logam berat dalam bentuk ZnOsebagai akselerator proses vulkanisasi karet,sehingga ion Zn 2+ terbawa dalam air limbahindustri barang jadi dengan konsentrasimencapai 300 ppm, sedangkan ambang bataskonsentrasi yang diperbolehkan maksimaladalah 2,5 ppm. Cara kimia yang umum di-gunakan untuk menurunkan kandunganZn 2+ dalam air limbah adalah dengan caramenambahkan basa, umumnya NaOH atauCa(OH) 2 , sampai pH sekitar 11, sehinggalogam berat ini diendapkan sebagai hidroksida-nya. Namun demikian, cara ini sangat mahaldan beresiko munculnya pencemaran sekunderakibat kelebihan basa. Salah satu alternatifyang murah untuk penyerapan Zn 2+ adalahmenggunakan biosorben berupa biomassaSaccharomyces cerevisiae yang berasal darilimbah pabrik bioetanol.Penelitian dilakukan dengan mengguna-kan air limbah artifisial yang mengandung ionZn 2+ dengan konsentrasi 300 ppm. Limbahartifisial diatur pHnya antara 3-7. Biosorpsidilakukan dengan menambahkan biomassaS. cerevisiae bebas maupun yang diamobilisasidengan kertas saring. Pengamatan dilakukanterhadap kandungan Zn 2+ setelah waktu kontakdua dan lima jam. Hasil penelitian menunjuk-kan bahwa biomassa S. cerevisiae bebasmaupun amobil mampu menyerap logam Zn 2+dan menurunkan konsentrasinya dari 250-300 ppm menjadi 20-50 ppm. Waktu kontakoptimum dicapai setelah satu jam, sedangkanproses sorpsi optimum terjadi pada pH 5.Biomassa S. cerevisiae kurang efektifmenyerap logam Zn 2+ pada konsentrasi rendah,di bawah 20 ppm. Perlakuan biomassa meng-gunakan NaOH menunjukkan kemampuanpenyerapan yang lebih baik jika dibandingkandengan yang diperlakukan menggunakanformaldehida dan pemanasan. Percobaan padaaliran kontinyu yang menggunakan biomassayang diperlaukan menggunakan NaOH,menunjukkan bahwa limbah artifisial Zn 2+dapat diturunkan sampai konsentrasi 24,02-47,95 ppm pada sampling pertama, dan 1,15-10,99 ppm pada sampling kedua. Kombinasipenyerapan menggunakan arang aktif danzeolit dapat menyerap sisa Zn 2+ mencapai batasyang diperbolehkan.

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Biosorption of zinc by fungal mycelial wastes

Cited by 135 publications

References 13 publications

<i>In vitro</i> Compatibility of Fungi for the Biosorption of Zinc(II) and Copper(II) from Electroplating Effluent

<i>In vitro</i> Compatibility of Fungi for the Biosorption of Zinc(II) and Copper(II) from Electroplating Effluent

Assessment of Physico Chemical, Microbial Characteristics and Heavy Metals Contamination at E Waste Dumping Sites at Ahmedabad, Gujarat.

Biosorpsi logam Zn oleh biomassa Saccharomyces cerevisiae *) Biosorption of Zn metal by Saccharomyces cerevisiae biomass

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