In this study, a performance evaluation of an aluminium oxide modified onion skin waste (Al2O3/OSW) for the removal heavy metal ions (Pb2+ and Cd2+) from aqueous solution was investigated under batch mode adsorption. The surface morphology, elemental composition, functional groups, textural characteristics charge as-made Al2O3/OSW adsorbent were examined using SEM, EDX, FTIR, BET area pHpzc tec...

The study aim was to test the applicability of exoskeletons and molts from mealworm (Tenebrio molitor) cultures as sorbents for anionic dyes: Reactive Black 5 (RB5) Yellow (RY84). Factors investigated included: characteristics (FTIR, pHPZC), influence pH on sorption efficiency, kinetics (pseudo-first, pseudo-second-order, intraparticle diffusion models), determination maximum capacity (Langmuir...

Abstract Natural mulberry leaves and carboxylic acid-modified (Morus alba L.) were used for the first time to scrutinize effects of modification on retention efficiency an anionic dye (Remazol Brilliant Blue R (RBBR)) from aqueous solutions suggest economical promising adsorbent treatment dye-contaminated water. The characterization adsorbents was accomplished through common techniques includin...

Fe3O4–biochar từ bã mía được sử dụng làm chất hấp phụ sinh học để loại bỏ hợp màu Safranin O (SO) trong dung dịch. Đặc trưng bề mặt của nghiên cứu bằng phương pháp SEM/EDX và pHpzc. Các thí nghiệm theo lô thực hiện nhằm đánh giá ảnh hưởng pH dịch, khối lượng Fe3O4–biochar, thời gian nồng độ SO ban đầu đến quá trình phụ. Kết quả cho thấy ở pH=6, là 3 g 50 mL dịch SO, 120 phút mg/L các điều kiện ...

The main objective of the present study is to effectively utilize the de-oiled algal biomass (DAB) to minimize the waste streams from algal biofuel by using it as an adsorbent. Methylene blue (MB) was used as a sorbate for evaluating the potential of DAB as a biosorbent. The DAB was characterized by SEM, FTIR, pHPZC, particle size, pore volume and pore diameter to understand the biosorption mec...

A novel two-step chemical activation technique, consisting of carbonization and phosphoric acid activation in sequence, was investigated for activated carbon production from waste wood pallets in Hong Kong. A widely used commercial activated carbon, Calgon Filtrasorb® 400 (F400), was studied in parallel for comparison. The physical properties and surface chemistry of the activated carbon were d...

In this study, biochar made from the Sesbania sesban plant, under slow pyrolysis at 300°C was used to adsorb methylene blue (MB) in aqueous solution. The properties were clarified by diverse analytical methods such as FTIR, SEM, and BET. results indicated that surface of relatively smooth, had porous texture, stacked evenly. addition, a large specific area 561.8 m2/g pHpzc value 6.9. effect ads...

It is very rare to have the ions of only one metal ion in wastewater. Hence, removal copper and lead from aqueous solution single binary systems using natural banana peels was investigated a batch mode. Banana were characterised FTIR, which gave functional groups present. The spectra loaded with Pb(II) had higher percentage transmittance after adsorption. point zero charge pHpzc peel found be 4...

A new adsorbent consisting of fumed, mixed alumina, silica, and titania in various proportions (AST 50) was investigated. The studied material was prepared by chemical vapor deposition method. The diameter of AST 50 primary particles was equal to about 51 nm which denotes that it can be classified as a nanomaterial. In the presented paper, the adsorption properties of polyvinyl alcohol on the t...