排序方式: 共有50条查询结果,搜索用时 15 毫秒
1.
Compositions of wood-polypropylene composites (WPCs) are prepared through melt compounding followed by injection moulding. WPCs are formulated for eight compositions with a different weight ratio of wood, virgin or recycled polypropylene and coupling agent. WPCs compositions are compared in terms of Melt Flow Index, Tensile, FESEM images, Flexural and crystallinity index for same operating variable conditions. From the results, recycled polypropylene based WPCs are superior in comparison to virgin polypropylene based WPCs. With the addition of 5 % coupling agent in recycled polypropylene-based composites for 45:50 composition, tensile and flexural values of WPCs are higher in comparison to all composition and neat virgin or recycled polypropylene. This work stands for the utilization of waste wood with recycled plastic for replacement of wood and virgin plastic. 相似文献
2.
Banana peels were employed for the removal of metribuzin from aqueous solution. Sorption in the batch mode was optimized regarding pH, contact time, sorbent dose, initial pesticide concentrations, and temperature. The sorption data were fitted to pseudo-first-order, pseudo-second-order, intraparticle diffusion, Elovich, and liquid film diffusion model, the pseudo-second-order exhibiting best fit (R2 = 0.9803). Of the four most common sorption isotherm models (Langmuir, Freundlich, Tempkin, and Dubinin–Radushkevich), the data followed the Langmuir isotherm with highest correlation. The maximum adsorption capacity was found to be 167 mg g?1. Gibbs free energy, enthalpy, and entropy showed that the sorption was exothermic and spontaneous. 相似文献
3.
Bhat Shakeel Ahmad Sher Farooq Kumar Rohitashw Karahmet Emina Haq Syed Anam Ul Zafar Ayesha Lima Eder C. 《Environmental science and pollution research international》2022,29(57):85648-85657
Environmental Science and Pollution Research - Coronavirus refers to a group of widespread viruses. The name refers to the specific morphology of these viruses because their spikes look like a... 相似文献
4.
Phulpoto Anwar Hussain Qazi Muneer Ahmed Haq Ihsan Ul Phul Abdul Rahman Ahmed Safia Kanhar Nisar Ahmed 《Environmental science and pollution research international》2018,25(17):16578-16578
Environmental Science and Pollution Research - The original publication of this paper contains a mistake. 相似文献
5.
Saeed Muhammad Ahmad Aziz Boddula Rajender Inamuddin Haq Atta ul Azhar Aisha 《Environmental Chemistry Letters》2018,16(1):287-294
Environmental Chemistry Letters - Water pollution by the textile industry is a major issue. Therefore, there is a need for methods to remove organic dyes from industrial effluents. Various... 相似文献
6.
Tyre recycling has become a necessity because of the huge piles of tyres that represent a threat to the environment. The used
tyres represent a source of energy and valuable chemical products. Waste tyres were pyrolysed catalytically in a batch reactor
under atmospheric pressure. Calcium carbide was used as a catalyst to explore its effect on pyrolysis product distribution.
The effect of temperature, amount of catalyst and time on the yields of the pyrolysed products was investigated. Char yield
decreased with increase of pyrolysis temperature while total gas and liquid yields increased. The liquid fraction was obtained
with boiling point up to 320 °C. The physical and chemical properties of the pyrolysed products obtained were characterized.
The catalytic pyrolysis produced 45 wt.% aromatic, 35 wt.% aliphatic and 20 wt.% of polar hydrocarbons.
The distillation data showed that ∼80% of oil has boiling point below 270 °C which is the boiling point for 50% of distilled
product in commercial diesel oil. The oil fraction was found to have high gross calorific value; GCV (42.8 MJ kg−1). Its Specific gravity, viscosity, Kinematic viscosity, freezing point and diesel index were also within the limits of diesel
fuel.
The char residues were studied to investigate their characteristics for use as a possible adsorbent. Surface area of char
before and after acid demineralization was determined to determine the adsorptive features for waste water treatment. 相似文献
7.
Jalal Fazal E. Xu Yongfu Li Xiaoyue Jamhiri Babak Iqbal Mudassir 《Environmental science and pollution research international》2021,28(32):43287-43314
Environmental Science and Pollution Research - Knowledge of the behavior of highly compacted expansive clays, as an engineered barrier, in disposal of high-level nuclear waste (HLW) systems to... 相似文献
8.
Li Xiaorui Dai Hongliang Han Ting Guo Zechong Li Hui Wang Xingang Abbasi Haq Nawaz 《Environmental science and pollution research international》2022,29(36):54606-54618
Environmental Science and Pollution Research - Microbial fuel cells (MFCs) can obtain electrical energy from extensive organic matter and complete wastewater treatment at the same time. The... 相似文献
9.
Sana Sadaf Haq Nawaz Bhatti Muhammad Arif Misbah Amin Farva Nazar 《Chemistry and Ecology》2013,29(3):252-264
This paper reports the application of Box-Behnken experimental design to illustrate the adsorption of direct dyes (Indosol Black NF and Indosol Orange RSN) using polyethyleneimine (PEI)-treated peanut husk biomass. The effect of three independent variables (initial dyes concentration, biosorbent dose and pH) was investigated during the study. Maximum biosorption capacity (141 and 98.2 mg/g) of PEI-pretreated biomass was achieved with 200 mg/L initial dye concentration and 0.05 g/50 mL biomass dose for Indosol Black NF and Indosol Orange RSN, respectively. Acidic pH was found to be favourable for maximum dyes removal. Characterisation of biosorbent was carried out through Fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy, thermogravimetric analysis (TGA) and point of zero charge determination. FT-IR analyses confirmed the involvement of carboxylic and carbonyl groups. The desorption study was also conducted to check out the possibility of regeneration of dyes and adsorbent and it was found that 51.58 and 76.6% of Indosol Black NF and Indosol Orange RSN, respectively, can be desorbed from the loaded biosorbent by using 1 M NaOH solution. The results indicated that PEI-treated peanut husk biomass can be used as an efficient biosorbent for the removal of Indosol Black NF and Indosol Orange RSN dyes from aqueous solutions. 相似文献
10.
Magnetic particles prepared via co-precipitation and impregnated onto wheat husk (MN-WH) were used for the removal of methyl blue (MB) from aqueous solution. Experiments were conducted in a batch mode for optimization regarding pH, contact time, adsorbent dose, initial dye concentrations, and temperature. Maximum adsorption (98%) was achieved at pH 5. The adsorption data were fitted into pseudo-first, pseudo-second, intraparticle diffusion, and Elovich equation revealing that adsorption followed pseudo-second-order kinetics. The four most common isotherm models, i.e. the Langmuir, Freundlich, Tempkin, and Dubinin–Radushkevich (D–R), were used to evaluate the data, with the best fit to a Langmuir isotherm (R2 = 0.996), followed by a Freundlich isotherm (R2 = 0.995), indicating monolayer adsorption of MB on the surface of MN-WH. Thermodynamic parameters calculated from the Van't Hoff equation revealed that the adsorption is exothermic (ΔHº = ?19.7 kJ mol?1). 相似文献