Study on Adsorbing Chromium(VI) Ions in Wastewater by Aureobacidium pullulans Secretion of Melanin

Heavy water is a class of highly contaminated waste water, even if the concentration is small, it can cause harm, and the toxicity is long-term sustainability.In this paper, Aureobasidium pullulans secretion of melanin were used for adsorption of Cr6+ ions in waste water.Aureobasidium pullulans strain were activated, cultured for seed and fermented, so that secreted melanin. The Aureobasidium pullulans secretion of melanin were made of dry cell, four factors such as pH, time, amount of bacteria,temperature and three level orthogonal experimental made for adsorption of chromium metal.Results showed, adsorption of chromium metal by dry cells for the best conditions: control temperature 30 , pH 3, the adsorption time was 2 hours, the absorption rate was 27%; and reached the four factors on the adsorption of Cr6+ for Aureobasidium pullulans followed the order: pH> bacteria amount> of time> temperature. In the best adsorption conditions were wet cell assay for adsorption of chromium metal. With 4% (V/V) hydrogen peroxide of 0.01ml/mg bleaching for the dry and wet cell, then for its adsorption of chrome metal. The results showed that the order of effect on adsorption of heavey metal ions by Aureobasidium were: the dry cells secretion of melanin> the wet cells secretion of melanin > decolorized dry cells> decolorized wet cells. It showed that adsorption ability of heavy metals by Aureobasidium pullulans was related to its secretion of melanin.

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Binary MOF of iron and copper for treating ciprofloxacin contaminated waste water by integrated technique of adsorption and photocatalytic degradation

New Journal of Chemistry ◽

10.1039/d1nj02880d ◽

2021 ◽

Author(s):

Aditi Chatterjee ◽

Amiya K Jana ◽

Jayanta Kumar Basu

Keyword(s):

Waste Water ◽

Water Pollution ◽

Photocatalytic Degradation ◽

Metal Organic Framework ◽

Single Step ◽

New Approach ◽

Metal Organic ◽

Integrated Technique ◽

Contaminated Waste ◽

Control Water

Adsorption assisted photocatalysis is a new approach to control water pollution. A novel metal organic framework MIL 53(Fe-Cu) was formulated by a single step solvothermal route. The newly developed MOF...

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Response Surface Optimization of Adsorption Conditions of Neutral Red Wastewater by Brewer's Grains

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.2859 ◽

2014 ◽

Vol 955-959 ◽

pp. 2859-2863

Author(s):

Xin Long Jiang ◽

Yi Hua Jiang ◽

Cheng Gang Cai

Keyword(s):

Absorption Rate ◽

Ph Value ◽

Neutral Red ◽

Optimal Parameters ◽

Adsorption Time ◽

Response Surface Optimization ◽

Adsorption Temperature ◽

Response Optimization ◽

Maximal Absorption ◽

Adsorbent Particle

Abstract: Surface response optimization of adsorption conditions of neutral red wastewater by brewer's grains with the factors of pH value, initial concentration,adsorption temperature, adsorption time, adsorbent quantity and the response of adsorption rate were studied. The optimal parameters for adsorption conditions were of adsorbent concentration of 191.24 mg·L-1, adsorbent particle size of 60~80 mesh,pH 4.65, adsorbent amount of 2.56 g·L-1, adsorption time and temperature of 1.92 h and 30°C, respectively. The maximal absorption rate got 99.16%.The brewer's grains is a promising, cheap, efficient, new biological materials of adsorption for neutral red in wastewater.

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Long term filtration modelling and scaling up of mixed matrix ultrafiltration hollow fiber membrane: a case study of chromium(VI) removal

Journal of Membrane Science ◽

10.1016/j.memsci.2018.10.026 ◽

2019 ◽

Vol 570-571 ◽

pp. 204-214 ◽

Cited By ~ 7

Author(s):

Raka Mukherjee ◽

Prasenjit Bhunia ◽

Sirshendu De

Keyword(s):

Hollow Fiber ◽

Hollow Fiber Membrane ◽

Scaling Up ◽

Fiber Membrane ◽

Mixed Matrix ◽

Chromium Vi

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Removal of Chromium(VI) from waste water by using adsorbent prepared from green coconut shell

Desalination and Water Treatment ◽

10.1080/19443994.2013.801796 ◽

2013 ◽

Vol 52 (16-18) ◽

pp. 3122-3132 ◽

Cited By ~ 19

Author(s):

S. Kumar ◽

B. C. Meikap

Keyword(s):

Waste Water ◽

Coconut Shell ◽

Chromium Vi

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Characterization of Cadmium Uptake in Lactobacillus plantarum and Isolation of Cadmium and Manganese Uptake Mutants

Applied and Environmental Microbiology ◽

10.1128/aem.65.11.4741-4745.1999 ◽

1999 ◽

Vol 65 (11) ◽

pp. 4741-4745 ◽

Cited By ~ 26

Author(s):

Zhiqi Hao ◽

Heinz R. Reiske ◽

David B. Wilson

Keyword(s):

Lactobacillus Plantarum ◽

Chemical Mutagenesis ◽

Uptake System ◽

High Affinity ◽

Manganese Uptake ◽

Type Rate ◽

Wild Type Rate ◽

Dry Cell

ABSTRACT Two different Cd2+ uptake systems were identified inLactobacillus plantarum. One is a high-affinity, high-velocity Mn2+ uptake system which also takes up Cd2+ and is induced by Mn2+ starvation. The calculated Km and V maxare 0.26 μM and 3.6 μmol g of dry cell−1min−1, respectively. Unlike Mn2+ uptake, which is facilitated by citrate and related tricarboxylic acids, Cd2+ uptake is weakly inhibited by citrate. Cd2+ and Mn2+ are competitive inhibitors of each other, and the affinity of the system for Cd2+ is higher than that for Mn2+. The other Cd2+uptake system is expressed in Mn2+-sufficient cells, and noKm can be calculated for it because uptake is nonsaturable. Mn2+ does not compete for transport through this system, nor does any other tested cation, i.e., Zn2+, Cu2+, Co2+, Mg2+, Ca2+, Fe2+, or Ni2+. Both systems require energy, since uncouplers completely inhibit their activities. Two Mn2+-dependent L. plantarum mutants were isolated by chemical mutagenesis and ampicillin enrichment. They required more than 5,000 times as much Mn2+ for growth as the parental strain. Mn2+ starvation-induced Cd2+ uptake in both mutants was less than 5% the wild-type rate. The low level of long-term Mn2+ or Cd2+accumulation by the mutant strains also shows that the mutations eliminate the high-affinity Mn2+ and Cd2+uptake system.

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LOW SPECIFIC ABSORPTION RATE ANTENNA USING ELECTROMAGNETIC BAND GAP STRUCTURE FOR LONG TERM EVOLUTION BAND 3 APPLICATION

Progress In Electromagnetics Research M ◽

10.2528/pierm18102103 ◽

2019 ◽

Vol 80 ◽

pp. 23-34

Author(s):

Mahesh Munde ◽

Anil Nandgaonkar ◽

Shankar Deosarkar

Keyword(s):

Band Gap ◽

Absorption Rate ◽

Specific Absorption Rate ◽

Long Term Evolution ◽

Band 3 ◽

Electromagnetic Band Gap ◽

Specific Absorption ◽

Term Evolution ◽

Band Gap Structure

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Balancing: the economic approach to sustainable water management

Water Science & Technology ◽

10.2166/wst.1999.0217 ◽

1999 ◽

Vol 39 (5) ◽

pp. 17-23 ◽

Cited By ~ 3

Author(s):

J. B. Braden ◽

E. C. van Ierland

Keyword(s):

Waste Water ◽

Water Management ◽

Sustainable Development ◽

Watershed Management ◽

Waste Water Treatment ◽

Economic Approach ◽

Sustainable Water Management ◽

Long Run ◽

Insight Into

The economic approach to the management of water resources and systems is one of balancing competing objectives. Economics provides a framework for weighing those objectives in determining how much of each to strive for based on concerns for current use as well as long-term sustainability. More importantly, economics provides insight into policies that promote sustainable development by virtue of aligning the incentives of individuals with the long-run interests of the community. This paper shows how economic principles can be applied to reinforce sustainable choices concerning water supply, waste water treatment, irrigation, and watershed management.

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Long-term experiments of waste water injection in the otake geothermal field, Japan

Geothermics ◽

10.1016/0375-6505(89)90022-9 ◽

1989 ◽

Vol 18 (1-2) ◽

pp. 153-159 ◽

Cited By ~ 7

Author(s):

R. Itoi ◽

M. Fukuda ◽

K. Jinno ◽

K. Hirowatari ◽

N. Shinohara ◽

...

Keyword(s):

Waste Water ◽

Water Injection ◽

Geothermal Field ◽

Long Term Experiments

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Research on Influence Factors of Bamboo Charcoal Adsorb Ammonia Nitrogen in Wastewater

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.356-360.493 ◽

2011 ◽

Vol 356-360 ◽

pp. 493-497 ◽

Cited By ~ 1

Author(s):

Zong Ning Li ◽

Zong Qiang Zhu ◽

Mei Na Liang ◽

Hong Dong Qin ◽

Yi Nian Zhu

Keyword(s):

Ph Value ◽

Influence Factors ◽

Ammonia Nitrogen ◽

Bamboo Charcoal ◽

Solution Ph ◽

Adsorption Ability ◽

Adsorption Time ◽

Initial Concentration ◽

Adsorption Temperature ◽

Better Than

The influences of adsorption temperature, adsorption time, dosing quantity, adsorption environment pH value, initial concentration and bamboo charcoal type on adsorption of bamboo charcoal adsorb ammonia nitrogen in wastewater are studied. The result shows that the maximum adsorption values are 1.1715 mg/g and 0.9115 mg/g respectively at 25°C and 40°C. Bamboo charcoal can easily absorb ammonia nitrogen at low temperature condition. 180 min is a suitable adsorption time. Increasing bamboo charcoal dosing quantity is helpful to improve efficiencies of ammonia nitrogen removal in wastewater, but the adsorption capacity is declining as bamboo charcoal dosing quantity increasing. Solution pH value has a great impact on the adsorbed amount, the adsorbed effect in alkaline solution is much better than in acid one’s. The adsorption ability of the moderate temperature bamboo charcoal is higher than the high temperature one’s.

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