PMID- 30573074 OWN - NLM STAT- MEDLINE DCOM- 20190111 LR - 20190111 IS - 1001-0742 (Print) IS - 1001-0742 (Linking) VI - 77 DP - 2019 Mar TI - Efficient capture of aqueous humic acid using a functionalized stereoscopic porous activated carbon based on poly(acrylic acid)/food-waste hydrogel. PG - 104-114 LID - S1001-0742(18)30402-9 [pii] LID - 10.1016/j.jes.2018.06.019 [doi] AB - Stereoscopic porous carbons have shown good potential in humic acid (HA) removal. In this work, a novel stereoscopic porous activated carbon (SPAC) was designed and synthesized via the self-assembly of a hydrogel based on food waste during in-situ polymerization, vacuum drying, carbonization, and activation. Then, the SPAC was functionalized with 3-aminopropyltriethoxysilane (APTES) and the adsorption behavior of the modified SPAC (SPAC-NH(2)) was studied systematically. The effects of pH, contact time, initial concentration of HA, and adsorbent dose were investigated, showing that optimal HA removal efficiency (>98.0%) could be achieved at an initial HA concentration of 100 mg/L. The experimental adsorption isotherm data was fitted to the Langmuir model with a maximum adsorption capacity of 156.0 mg HA/g SPAC-NH(2). Analysis of the mechanism indicated that the removal of HA was mainly realized through the amidization reaction between the COOH groups of HA and the NH(2) groups of APTES. All of the above results showed that SPAC-NH(2) powder is an efficient, eco-friendly, and reusable adsorbent which is suitable for the removal of HA from wastewater. CI - Copyright (c) 2018. Published by Elsevier B.V. FAU - Zhou, Tao AU - Zhou T AD - The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. FAU - Zhao, Xin AU - Zhao X AD - Shanghai Chengpei Enterprise Management Consulting Co., Ltd., Shanghai 200000, China. FAU - Wu, Shuya AU - Wu S AD - The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. FAU - Su, Lianghu AU - Su L AD - Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China. FAU - Zhao, Youcai AU - Zhao Y AD - The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, 1515 North Zhongshan Rd. (No. 2), Shanghai 200092, China. Electronic address: zhaoyoucai@tongji.edu.cn. LA - eng PT - Journal Article DEP - 20180630 PL - Netherlands TA - J Environ Sci (China) JT - Journal of environmental sciences (China) JID - 100967627 RN - 0 (Acrylic Resins) RN - 0 (Humic Substances) RN - 0 (Hydrogels) RN - 0 (Waste Products) RN - 059QF0KO0R (Water) RN - 16291-96-6 (Charcoal) RN - 4Q93RCW27E (carbopol 940) SB - IM MH - Acrylic Resins/*chemistry MH - Adsorption MH - Charcoal/*chemistry MH - *Food MH - *Humic Substances MH - Hydrogels/*chemistry MH - Hydrogen-Ion Concentration MH - Porosity MH - Time Factors MH - *Waste Products MH - Water/*chemistry OTO - NOTNLM OT - 3-aminopropyltriethoxysilane OT - Adsorption OT - Food waste OT - Humic acid OT - Stereoscopic porous activated carbon EDAT- 2018/12/24 06:00 MHDA- 2019/01/12 06:00 CRDT- 2018/12/22 06:00 PHST- 2018/02/08 00:00 [received] PHST- 2018/06/21 00:00 [revised] PHST- 2018/06/22 00:00 [accepted] PHST- 2018/12/22 06:00 [entrez] PHST- 2018/12/24 06:00 [pubmed] PHST- 2019/01/12 06:00 [medline] AID - S1001-0742(18)30402-9 [pii] AID - 10.1016/j.jes.2018.06.019 [doi] PST - ppublish SO - J Environ Sci (China). 2019 Mar;77:104-114. doi: 10.1016/j.jes.2018.06.019. Epub 2018 Jun 30.