Biosorbent from Chinese Cabbage (Brassica pekinensia L.) for Phenol Contaminated Waste Water Treatment

2019 ◽  
Vol 811 ◽  
pp. 71-79
Author(s):  
Anita Alni ◽  
Kana Puspita ◽  
Muhammad Ali Zulfikar
Keyword(s):  
Waste Water ◽  
Adsorption Capacity ◽  
Chinese Cabbage ◽  
Contact Time ◽  
Agricultural Waste ◽  
Health Effect ◽  
Waste Water Treatment ◽  
Phenol Removal ◽  
Bet Analysis ◽  
Contaminated Waste

Water pollution is one of the most common problem in industrialized society owing to increase in manufacturing process. Phenol is one of the water pollutant subsequently released into the waste water in manufacturing papers, paints, textile and plastics. Phenol caused serious health effect if in contact with human hence removal of this substance from waste water is crucial. Using bio sorbent in adsorption of phenol offered a green and cheap method for phenol removal particularly in Bandung area where supply of bio sorbent from agricultural waste are abundant. Biomass from Chinese cabbage (Brassica Pekinensis L.) contains cellulose, hemicellulose and lignin, among other substances that present in smaller amount. Dried stems were blended and filtered through 140 mesh and washed with ethanol to provide biosorbent. Modification was carried out by treatment with epichlorohydrin and HCl. Biosorbents were characterized using FTIR, SEM and BET analysis. Adsorption study was carried out according to the following parameters: pH range 5-9, contact time 10-80 minutes, mass of biosorbent 0.2-1.1 g and initial concentration of phenol is 10-50 mg/L. Upon adsorption, the concentration of phenol was measured by HPLC analysis at the following parameter: eluent methanol: water 7:3 v/v, flowrate 0.8 mL/minute at 273 nm. Untreated biosorbent showed adsorption capacity 0.097 mg/g whilst treatment with epichlorohydrine and HCl showed a decrease in adsorption capacity of 0.057 mg/g and 0.059 mg/g respectively. The optimum adsorption capacity was obtained at pH 8, 20 minutes contact time, 0.8 g mass of biosorbent and initial phenol concentration of 10 mg/L.

scholarly journals Study on the removal of cresol for the agricultural waste water treatment.

1987 ◽  
Vol 36 (1) ◽  
pp. 7-12
Author(s):  
Takeo NAKAMURA ◽  
Tamotsu MIYOSHI ◽  
Seiki TANADA ◽  
Tatsumi TOUMIYA
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Agricultural Waste ◽  
Waste Water Treatment

scholarly journals Coffee Waste as Novel Bio-Adsorbent: Detoxification of Nickel from Contaminated Soil and Coriandrum Sativum

2020 ◽  
Keyword(s):  
Adsorption Capacity ◽  
Contaminated Soil ◽  
Contact Time ◽  
Agricultural Waste ◽  
Ion Concentration ◽  
Coffee Bean ◽  
Mean Values ◽  
Soil P ◽  
Weight Percentage ◽  
Coffee Waste

According to the recent surveys, the air and soil pollution levels have risen from the toxic metals due to accumulation of these metals in soil and plants. These concerns have become one of the basic problems of agricultural products, which lead to food contamination. In recent years, the use of low-cost bio-adsorption has been considered which is mainly due to agricultural waste. It is worth mentioning that coffee consumption is over eleven billion tons per year around the world. Coffee bean waste (canephorat, Arabica) is solid and insoluble in water, which is why it is racked up and compiled in nature. Packed potting soil purchased from Tehran market. Meanwhile in 45 vases the Coffee waste (from 0% to 5%) dry weight percentage were mixed by soil, due to observing the effect of Coffee waste as adsorbent and in defined times: 1, 10, 20, 30, 40 days in the study. ICP-MS. Ion concentration was addressed in three replicates determined the Nickel (Ni) contents in aerial parts of vegetable in treated and untreated samples. The soil, leaves of vegetable was digested by wet method according the standard protocol (AOAC). Mean values were calculated using Analysis of Variance, (ANOVA) and adsorption capacity varied by considering the effects of assorted parameters like contact time, initial concentrations, and adsorbent dose. It was acknowledged by the results that coffee bean waste (CBW) has more potential to adsorb Ni during the first days of the study (p < 0.001) and adsorption capacity was diversified by considering the effects of various parameters like contact time, initial concentrations, pH, and absorbent dose. Coffee bean waste could acquire high level of Nickel in a short time and the uptake rate by edible vegetable plant is significantly afflicted by their concentrations in the contaminated soil (p< 0.05). A contact time of 30 days by %3 corianders was resulted to be optimum.

Preparation of lignin-based mesoporous biochar nano- and microparticles, and their adsorption properties for hexavalent chromium

BioResources ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 6363-6377
Author(s):  
Yu Hu ◽  
Meng Ling ◽  
Xianfa Li
Keyword(s):  
Adsorption Capacity ◽  
Functional Groups ◽  
Pyrolysis Temperature ◽  
Waste Water Treatment ◽  
Bet Surface Area ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Order Kinetic ◽  
Contaminated Waste ◽  
Mesoporous Biochar

The removal performance and mechanism of Cr(VI) from aqueous solution was studied for a novel micro-nano particle kraft lignin biochar (BC) pyrolyzed at 400 to 700 °C. The physicochemical properties of BC were determined by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and N2 adsorption-desorption isotherms. The results illustrated that the BC had irregular micro- and nanoparticles with abundant pore structure and high BET surface area (111.1 m2/g). The FT-IR results showed that the lower pyrolysis temperature resulted in more oxygen-containing functional groups. The Cr(VI) adsorption capacity decreased with the pyrolysis temperature increasing from 400 to 700 °C, and the maximum percentage removal of Cr(VI) for BC obtained at 400 °C was 100% at pH 2, which suggested that the removal efficiency was mainly dependent on functional groups. Kinetic analysis demonstrated that Cr(VI) adsorption on BC fit well to the pseudo-second-order kinetic model. The adsorption data was well fitted with the Langmuir isotherm models, and the maximum adsorption capacity was 37.2 mg/g at 298K. The BC could be reused twice with Cr(VI) removal of 63.91% and was suitable for Cr(VI) contaminated waste-water treatment.

Extraction of uranyl ions from aqueous solutions using silica-gel-bound macrocycles for alpha contaminated waste water treatment

2004 ◽  
Vol 502 (2) ◽  
pp. 179-187 ◽  
Author(s):  
F Barbette ◽  
F Rascalou ◽  
H Chollet ◽  
J.L Babouhot ◽  
F Denat ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Aqueous Solutions ◽  
Silica Gel ◽  
Waste Water Treatment ◽  
Uranyl Ions ◽  
Contaminated Waste

scholarly journals Adsorption of Pb2+ from waste water using modified and unmodified plantain pseudo stem waste as adsorbent

2021 ◽  
Vol 3 (1) ◽  
pp. 093-096
Author(s):  
Idongesit O Ekpenyong ◽  
Effiong J Okon ◽  
Kufre E Essien ◽  
Okon E Okon
Keyword(s):  
Waste Water ◽  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Contact Time ◽  
Powdered Sample ◽  
Fenton Reagent ◽  
Adsorption Studies ◽  
Adsorption Capacities ◽  
Increase With Increase ◽  
Adsorbate Concentration

This study was carried out to evaluate the potentials of plantain pseudo stem waste as adsorbent in the removal of Pb2+ from aqueous solution. Filament obtained from Plantain pseudo stem were dried, cut into chips and ground using electric grinder. The powdered sample obtained was soaked in ethanol for 24 hours and wash with water several times to remove the extractive component. It was then dried in the oven. Modification reaction was carried out on the powdered sample using Fenton reagent (Fe2+/H2O2). Both the modified and unmodified adsorbents were used for the adsorption of Pb2+ from aqueous solution. Factors considered were effect of contact time and effect of adsorbate (Pb2+) concentrations. The results revealed that in all the adsorption studies, the adsorption capacity of modified adsorbent was higher than that of the unmodified adsorbent. However, adsorption capacities increase with increase in contact time and decreases with increase in the adsorbate concentration.

scholarly journals Facial Synthesis of Adsorbent from Hemicelluloses for Cr(VI) Adsorption

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1443
Author(s):  
Yi Wei ◽  
Wei Chen ◽  
Chuanfu Liu ◽  
Huihui Wang
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Adsorption Capacity ◽  
Low Cost ◽  
Waste Water Treatment ◽  
Ammonia Solution ◽  
Langmuir Model ◽  
Raw Material ◽  
Maximum Adsorption Capacity ◽  
Chemical Fiber

It is challenging work to develop a low-cost, efficient, and environmentally friendly Cr(VI) adsorbent for waste water treatment. In this paper, we used hemicelluloses from chemical fiber factory waste as the raw material, and prepared two kinds of carbon materials by the green hydrothermal method as adsorbent for Cr(VI). The results showed that hemicelluloses hydrothermally treated with citric acid (HTC) presented spherical shapes, and hemicelluloses hydrothermally treated with ammonia solution (HTC-NH2) provided spongy structures. The adsorption capacity of the samples can be obtained by the Langmuir model, and the adsorption kinetics could be described by the pseudo-second-order model at pH 1.0. The maximum adsorption capacity of HTC-NH2 in the Langmuir model is 74.60 mg/g, much higher than that of HTC (61.25 mg/g). The green hydrothermal treatment of biomass with ammonia solution will provide a simple and feasible way to prepare adsorbent for Cr(VI) in waste water treatment.

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