Simultaneous biosorption of Cu2+, Zn2+ and Cr6+ from aqueous solution by Streptomyces rimosus biomass

Chergui, Abdelmalek; Bakhti, M.Z.; Chahboub, A.; Haddoum, Saliha; Selatnia, A.; Junter, Guy-Alain

doi:10.1016/j.desal.2006.03.566

Cited by 84 publications

(38 citation statements)

References 17 publications

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“…Using the Langmuir and Freundlich models, P. coriaceum performed better over S. hemiphyllum in the sorption of tetracycline at shaking speeds higher than 250 rpm. The higher biosorption capacity of tetracycline at 250 rpm is consistent with the report by Mameri et al (1999), Selatnia et al (2004) and Chergui et al (2007) who found a decrease in biosorption capacity at shaking speeds away from 250 rpm. Figure 3 illustrates the uptake of tetracycline at different pH levels.…”

Section: Effect Of Temperaturesupporting

confidence: 81%

A comparative study on tetracycline sorption by Pachydictyon coriaceum and Sargassum hemiphyllum

Wong

2014

Int. J. Environ. Sci. Technol.

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This study compared the biosorption of tetracycline, an antibiotic commonly used to treat bacterial infections, in aqueous solution under various conditions using two brown seaweeds commonly found in Hong Kong waters-Pachydictyon coriaceum and Sargassum hemiphyllum. Two environmental effects (temperature and shaking speed) and two chemical effects (pH and salinity) were investigated to determine the optimal conditions for sorption of tetracycline by biomass. It was found that the maximum biosorption capacity (q max ) of tetracycline by the two types of seaweed was generally higher at lower temperature (15°C) and higher shaking speed (250 rpm). The sorption performances of P. coriaceum and S. hemiphyllum were better in slightly acidic solution (pH 3), with q max around 9 mg/g for P. coriaceum. Higher salinity (100 mM NaCl) reduced the sorption ability of both brown seaweeds by reducing the solubility of the aqueous tetracycline. It was found that S. hemiphyllum could tolerate and had higher sorption in a slightly saline solution (50 mM NaCl), while P. coriaceum performed better without the presence of NaCl. This study provides crucial information for achieving optimal sorption of aqueous tetracycline using P. coriaceum over S. hemiphyllum as an effective biomass for removing antibiotics in wastewater.

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Section: Effect Of Temperaturesupporting

confidence: 81%

A comparative study on tetracycline sorption by Pachydictyon coriaceum and Sargassum hemiphyllum

Wong

2014

Int. J. Environ. Sci. Technol.

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“…Pencemaran logam berat seperti timbal, krom, cadmium, tembaga, merkuri, dan arsen yang dihasilkan limbah industri sangat merugikan manusia dan lingkungan (Chergui et al, 2007). Logam berat yang terakumulasi dalam tubuh manusia akan menyebabkan berbagai macam penyakit serius seperti gangguan syaraf otak, ginjal akut, kelainan janin, bahkan dapat menyebabkan kematian (Mawardi, 2007).…”

Section: Pendahuluanunclassified

Pemanfaatan sistem rotary biological contactor menggunakan kultur Omphalina sp yang diimobilisasi pada tandan kosong kelapa sawit untuk absorbsi logam berat Cu2+ dan Hg2+ (Utilization of rotary biological contactor system using Omphalina sp immobilized on oil palm empty fruit bunch for absorption of heavy metals Cu2+ and Hg2+)

Dimawarnita¹,

Panji²

2017

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“…Mikroba telah lama diketahui dapat menyerap logam-logam berat dari lingkungan eksternalnya secara efisien (Horsfall et al, 2006;Chergui et al, 2007). Saccharomyces cerevisiae sudah banyak diteliti berkaitan dengan potensinya sebagai biosorben dan bioakumulator logam berat, di antaranya karena memiliki persentase material dinding sel sebagai sumber pengikatan logam yang tinggi dan juga biomassa S. cerevisiae mudah diperoleh karena banyak dimanfaatkan pada proses fermentasi.…”

Section: Pendahuluanunclassified

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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Simultaneous biosorption of Cu2+, Zn2+ and Cr6+ from aqueous solution by Streptomyces rimosus biomass

Cited by 84 publications

References 17 publications

A comparative study on tetracycline sorption by Pachydictyon coriaceum and Sargassum hemiphyllum

A comparative study on tetracycline sorption by Pachydictyon coriaceum and Sargassum hemiphyllum

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

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